Merge pull request #903 from Megala21/appm_new

Adding Application Release Management related changes.

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/APIUtil.java

@@ -24,6 +24,8 @@ import org.wso2.carbon.context.PrivilegedCarbonContext;
 import org.wso2.carbon.device.application.mgt.api.beans.ErrorResponse;
 import org.wso2.carbon.device.application.mgt.common.exception.ApplicationManagementException;
 import org.wso2.carbon.device.application.mgt.common.services.ApplicationManager;
+import org.wso2.carbon.device.application.mgt.common.services.ApplicationReleaseManager;
+import org.wso2.carbon.device.application.mgt.common.services.ApplicationStorageManager;
 import org.wso2.carbon.device.application.mgt.common.services.LifecycleStateManager;
 import org.wso2.carbon.device.application.mgt.common.services.PlatformManager;
 
@@ -40,6 +42,8 @@ public class APIUtil {
     private static ApplicationManager applicationManager;
     private static PlatformManager platformManager;
     private static LifecycleStateManager lifecycleStateManager;
+    private static ApplicationReleaseManager applicationReleaseManager;
+    private static ApplicationStorageManager applicationStorageManager;
 
     public static ApplicationManager getApplicationManager() {
         if (applicationManager == null) {
@@ -96,6 +100,50 @@ public class APIUtil {
         return lifecycleStateManager;
     }
 
+    /**
+     * To get the Application Release Manager from the osgi context.
+     *
+     * @return ApplicationRelease Manager instance in the current osgi context.
+     */
+    public static ApplicationReleaseManager getApplicationReleaseManager() {
+        if (applicationReleaseManager == null) {
+            synchronized (APIUtil.class) {
+                if (applicationReleaseManager == null) {
+                    PrivilegedCarbonContext ctx = PrivilegedCarbonContext.getThreadLocalCarbonContext();
+                    applicationReleaseManager = (ApplicationReleaseManager) ctx
+                            .getOSGiService(ApplicationReleaseManager.class, null);
+                    if (applicationReleaseManager == null) {
+                        String msg = "Application Release Manager service has not initialized.";
+                        log.error(msg);
+                        throw new IllegalStateException(msg);
+                    }
+                }
+            }
+        }
+        return applicationReleaseManager;
+    }
+
+    /**
+     * To get the Application Storage Manager from the osgi context.
+     * @return ApplicationStoreManager instance in the current osgi context.
+     */
+    public static ApplicationStorageManager getApplicationStorageManager() {
+        if (applicationStorageManager == null) {
+            synchronized (APIUtil.class) {
+                if (applicationStorageManager == null) {
+                    PrivilegedCarbonContext ctx = PrivilegedCarbonContext.getThreadLocalCarbonContext();
+                    applicationStorageManager = (ApplicationStorageManager) ctx
+                            .getOSGiService(ApplicationStorageManager.class, null);
+                    if (applicationStorageManager == null) {
+                        String msg = "Application Storage Manager service has not initialized.";
+                        log.error(msg);
+                        throw new IllegalStateException(msg);
+                    }
+                }
+            }
+        }
+        return applicationStorageManager;
+    }
     public static Response getResponse(ApplicationManagementException ex, Response.Status status) {
         return getResponse(ex.getMessage(), status);
     }

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/FileStreamingOutput.java

@@ -0,0 +1,55 @@
+/*
+ *   Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+ *
+ *   WSO2 Inc. licenses this file to you under the Apache License,
+ *   Version 2.0 (the "License"); you may not use this file except
+ *   in compliance with the License.
+ *   You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *   Unless required by applicable law or agreed to in writing,
+ *   software distributed under the License is distributed on an
+ *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *   KIND, either express or implied.  See the License for the
+ *   specific language governing permissions and limitations
+ *   under the License.
+ *
+ */
+
+package org.wso2.carbon.device.application.mgt.api;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import javax.ws.rs.WebApplicationException;
+import javax.ws.rs.core.StreamingOutput;
+
+/**
+ * FileStreamingOutput to allow the user to send the files as Stream.
+ */
+public class FileStreamingOutput implements StreamingOutput {
+    private InputStream inputStream;
+
+    public FileStreamingOutput(InputStream inputStream) {
+        this.inputStream = inputStream;
+    }
+
+    @Override
+    public void write(OutputStream outputStream) throws IOException, WebApplicationException {
+        try {
+            byte[] buffer = new byte[inputStream.available()];
+            inputStream.read(buffer);
+            outputStream.write(buffer);
+            outputStream.flush();
+        } finally {
+            if (inputStream != null) {
+                inputStream.close();
+            }
+            if (outputStream != null) {
+                outputStream.close();
+            }
+        }
+
+    }
+}

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/JSONMessageHandler.java

@@ -23,6 +23,13 @@ import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import org.wso2.carbon.device.application.mgt.common.jaxrs.AnnotationExclusionStrategy;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Type;
 import javax.ws.rs.Consumes;
 import javax.ws.rs.Produces;
 import javax.ws.rs.WebApplicationException;
@@ -31,12 +38,12 @@ import javax.ws.rs.core.MultivaluedMap;
 import javax.ws.rs.ext.MessageBodyReader;
 import javax.ws.rs.ext.MessageBodyWriter;
 import javax.ws.rs.ext.Provider;
-import java.io.*;
-import java.lang.annotation.Annotation;
-import java.lang.reflect.Type;
 
 import static javax.ws.rs.core.MediaType.APPLICATION_JSON;
 
+/**
+ * This provider is used to change a JSON object to complex object and inversely in request and response.
+ */
 @Provider
 @Produces(APPLICATION_JSON)
 @Consumes(APPLICATION_JSON)

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/MultipartCustomProvider.java

@@ -0,0 +1,73 @@
+/*
+*  Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+*  WSO2 Inc. licenses this file to you under the Apache License,
+*  Version 2.0 (the "License"); you may not use this file except
+*  in compliance with the License.
+*  You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied.  See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*
+*/
+
+package org.wso2.carbon.device.application.mgt.api;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import org.apache.cxf.jaxrs.ext.multipart.Attachment;
+import org.wso2.carbon.device.application.mgt.common.jaxrs.AnnotationExclusionStrategy;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Type;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.WebApplicationException;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.MultivaluedMap;
+import javax.ws.rs.ext.MessageBodyReader;
+import javax.ws.rs.ext.Provider;
+
+/**
+ * Provider for the text/plain type of input. Particularly use-ful for the complex objects sent along with Multipart
+ * request.
+ */
+@Provider
+@Consumes(MediaType.TEXT_PLAIN)
+public class MultipartCustomProvider implements MessageBodyReader<Object> {
+    private Gson gson;
+
+    public MultipartCustomProvider() {
+        final GsonBuilder gsonBuilder = new GsonBuilder().setDateFormat("EEE, dd MMM yyyy HH:mm:ss zzz")
+                .setExclusionStrategies(new AnnotationExclusionStrategy());
+        gson = gsonBuilder.create();
+    }
+    @Override
+    public boolean isReadable(Class<?> aClass, Type type, Annotation[] annotations, MediaType mediaType) {
+        return !aClass.equals(Attachment.class);
+    }
+
+    @Override
+    public Object readFrom(Class<Object> objectClass, Type type, Annotation[] annotations, MediaType mediaType,
+            MultivaluedMap<String, String> headers, InputStream inputStream) throws IOException,
+            WebApplicationException {
+        ByteArrayOutputStream result = new ByteArrayOutputStream();
+        byte[] buffer = new byte[1024];
+        int length;
+        while ((length = inputStream.read(buffer)) != -1) {
+            result.write(buffer, 0, length);
+        }
+        String jsonString = result.toString();
+        JsonObject obj = new JsonParser().parse(jsonString).getAsJsonObject();
+        return gson.fromJson(obj, type);
+    }
+}

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/beans/ErrorListItem.java

@@ -24,6 +24,9 @@ import io.swagger.annotations.ApiModelProperty;
 
 import javax.validation.constraints.NotNull;
 
+/**
+ * Represents a single error item in the error response.
+ */
 @ApiModel(description = "Error List Item")
 public class ErrorListItem {
 

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/beans/ErrorResponse.java

@@ -25,6 +25,10 @@ import io.swagger.annotations.ApiModelProperty;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * This represents a response that need to be send back to the client, when the request cannot be completed
+ * successfully.
+ */
 @ApiModel(description = "Error Response")
 public class ErrorResponse {
 

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/services/ApplicationManagementAPI.java

@@ -28,11 +28,14 @@ import io.swagger.annotations.ExtensionProperty;
 import io.swagger.annotations.Info;
 import io.swagger.annotations.SwaggerDefinition;
 import io.swagger.annotations.Tag;
+import org.apache.cxf.jaxrs.ext.multipart.Attachment;
+import org.apache.cxf.jaxrs.ext.multipart.Multipart;
 import org.wso2.carbon.apimgt.annotations.api.Scope;
 import org.wso2.carbon.apimgt.annotations.api.Scopes;
 import org.wso2.carbon.device.application.mgt.api.beans.ErrorResponse;
 import org.wso2.carbon.device.application.mgt.common.Application;
 import org.wso2.carbon.device.application.mgt.common.ApplicationList;
+import org.wso2.carbon.device.application.mgt.common.ApplicationRelease;
 
 import java.util.List;
 import javax.validation.Valid;
@@ -106,7 +109,6 @@ import javax.ws.rs.core.Response;
 @Api(value = "Application Management", description = "This API carries all application management related operations " +
         "such as get all the applications, add application, etc.")
 @Produces(MediaType.APPLICATION_JSON)
-@Consumes(MediaType.APPLICATION_JSON)
 public interface ApplicationManagementAPI {
 
     String SCOPE = "scope";
@@ -270,6 +272,82 @@ public interface ApplicationManagementAPI {
                     required = true)
             @Valid Application application);
 
+    @POST
+    @Path("upload-artifacts/{uuid}")
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.MULTIPART_FORM_DATA)
+    @ApiOperation(
+            consumes = MediaType.MULTIPART_FORM_DATA,
+            produces = MediaType.APPLICATION_JSON,
+            httpMethod = "POST",
+            value = "Upload artifacts",
+            notes = "This will create a new application",
+            tags = "Application Management",
+            extensions = {
+                    @Extension(properties = {
+                            @ExtensionProperty(name = SCOPE, value = "perm:application:create")
+                    })
+            }
+    )
+    @ApiResponses(
+            value = {
+                    @ApiResponse(
+                            code = 201,
+                            message = "OK. \n Successfully uploaded artifacts."),
+                    @ApiResponse(
+                            code = 500,
+                            message = "Internal Server Error. \n Error occurred while getting the application list.",
+                            response = ErrorResponse.class)
+            })
+    Response uploadApplicationArtifacts(
+            @ApiParam(
+                    name = "uuid",
+                    value = "UUID of the application",
+                    required = true)
+            @PathParam("uuid") String applicationUUID,
+            @Multipart(value = "icon") Attachment iconFile,
+            @Multipart(value = "banner") Attachment bannerFile,
+            @Multipart(value = "screenshot") List<Attachment> screenshots);
+
+    @PUT
+    @Path("upload-artifacts/{uuid}")
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.MULTIPART_FORM_DATA)
+    @ApiOperation(
+            consumes = MediaType.MULTIPART_FORM_DATA,
+            produces = MediaType.APPLICATION_JSON,
+            httpMethod = "POST",
+            value = "Upload artifacts",
+            notes = "This will create a new application",
+            tags = "Application Management",
+            extensions = {
+                    @Extension(properties = {
+                            @ExtensionProperty(name = SCOPE, value = "perm:application:create")
+                    })
+            }
+    )
+    @ApiResponses(
+            value = {
+                    @ApiResponse(
+                            code = 201,
+                            message = "OK. \n Successfully uploaded artifacts."),
+                    @ApiResponse(
+                            code = 500,
+                            message = "Internal Server Error. \n Error occurred while getting the application list.",
+                            response = ErrorResponse.class)
+            })
+    Response updateApplicationArtifacts(
+            @ApiParam(
+                    name = "uuid",
+                    value = "UUID of the application",
+                    required = true)
+            @PathParam("uuid") String applicationUUID,
+            @Multipart(value = "icon", required = false) Attachment iconFile,
+            @Multipart(value = "banner", required = false) Attachment bannerFile,
+            @Multipart(value = "screenshot", required = false) List<Attachment> screenshots);
+
+
+
     @PUT
     @Consumes("application/json")
     @Path("/{uuid}/lifecycle")
@@ -376,4 +454,121 @@ public interface ApplicationManagementAPI {
                     value = "Unique identifier of the Application",
                     required = true)
             @PathParam("appuuid") String applicationUUID);
+
+    @POST
+    @Path("/release/{uuid}")
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.MULTIPART_FORM_DATA)
+    @ApiOperation(
+            consumes = MediaType.MULTIPART_FORM_DATA,
+            produces = MediaType.APPLICATION_JSON,
+            httpMethod = "POST",
+            value = "Create an application release",
+            notes = "This will create a new application release",
+            tags = "Application Management",
+            extensions = {
+                    @Extension(properties = {
+                            @ExtensionProperty(name = SCOPE, value = "perm:application:create")
+                    })
+            }
+    )
+    @ApiResponses(
+            value = {
+                    @ApiResponse(
+                            code = 201,
+                            message = "OK. \n Successfully created an application release.",
+                            response = ApplicationRelease.class),
+                    @ApiResponse(
+                            code = 500,
+                            message = "Internal Server Error. \n Error occurred while releasing the application.",
+                            response = ErrorResponse.class)
+            })
+
+    Response createApplicationRelease(
+            @ApiParam(
+                    name = "UUID",
+                    value = "Unique identifier of the Application",
+                    required = true)
+            @PathParam("uuid") String applicationUUID,
+            @Multipart(value = "applicationRelease", type = "application/json") ApplicationRelease applicationRelease,
+            @Multipart(value = "binaryFile") Attachment binaryFile);
+
+    @GET
+    @Path("/release-artifacts/{uuid}/{version}")
+    @Produces(MediaType.APPLICATION_OCTET_STREAM)
+    @Consumes(MediaType.MULTIPART_FORM_DATA)
+    @ApiOperation(
+            consumes = MediaType.APPLICATION_JSON,
+            produces = MediaType.APPLICATION_OCTET_STREAM,
+            httpMethod = "POST",
+            value = "Create an application release",
+            notes = "This will create a new application release",
+            tags = "Application Management",
+            extensions = {
+                    @Extension(properties = {
+                            @ExtensionProperty(name = SCOPE, value = "perm:application:get")
+                    })
+            }
+    )
+    @ApiResponses(
+            value = {
+                    @ApiResponse(
+                            code = 200,
+                            message = "OK. \n Successfully retrieved the Application release.",
+                            response = Attachment.class),
+                    @ApiResponse(
+                            code = 500,
+                            message = "Internal Server Error. \n Error occurred while releasing the application.",
+                            response = ErrorResponse.class)
+            })
+    Response getApplicationReleaseArtifacts(
+            @ApiParam(
+                    name = "UUID",
+                    value = "Unique identifier of the Application",
+                    required = true)
+            @PathParam("uuid") String applicationUUID,
+            @ApiParam(
+                    name = "Version",
+                    value = "Version of the Application release need to be retrieved",
+                    required = true)
+            @PathParam("version") String version);
+
+    @GET
+    @Path("/release/{uuid}")
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
+    @ApiOperation(
+            consumes = MediaType.APPLICATION_JSON,
+            produces = MediaType.APPLICATION_JSON,
+            httpMethod = "GET",
+            value = "Get all the releases or specific release of an application",
+            notes = "This will retrieve the all the releases or specific release of an application",
+            tags = "Application Management",
+            extensions = {
+                    @Extension(properties = {
+                            @ExtensionProperty(name = SCOPE, value = "perm:application:get")
+                    })
+            }
+    )
+    @ApiResponses(
+            value = {
+                    @ApiResponse(
+                            code = 200,
+                            message = "OK. \n Successfully retrieved the Application release."),
+                    @ApiResponse(
+                            code = 500,
+                            message = "Internal Server Error. \n Error occurred while releasing the application.",
+                            response = ErrorResponse.class)
+            })
+    Response getApplicationReleases(
+            @ApiParam(
+                    name = "UUID",
+                    value = "Unique identifier of the Application",
+                    required = true)
+            @PathParam("uuid") String applicationUUID,
+            @ApiParam(
+                    name = "version",
+                    value = "Version of the application",
+                    required = false)
+            @QueryParam("version") String version);
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/services/LifecycleManagementAPI.java

@@ -31,8 +31,8 @@ import org.wso2.carbon.apimgt.annotations.api.Scopes;
 import org.wso2.carbon.device.application.mgt.api.beans.ErrorResponse;
 import org.wso2.carbon.device.application.mgt.common.Application;
 import org.wso2.carbon.device.application.mgt.common.LifecycleState;
-import org.wso2.carbon.device.application.mgt.common.Platform;
 
+import java.util.List;
 import javax.ws.rs.Consumes;
 import javax.ws.rs.GET;
 import javax.ws.rs.Path;
@@ -40,8 +40,10 @@ import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
-import java.util.List;
 
+/**
+ * Lifecycle management related APIs.
+ */
 @SwaggerDefinition(
         info = @Info(
                 version = "1.0.0",
@@ -139,7 +141,8 @@ public interface LifecycleManagementAPI {
                     @ApiResponse(
                             code = 304,
                             message = "Not Modified. \n " +
-                                    "Empty body because the client already has the latest version of the requested resource."),
+                                    "Empty body because the client already has the latest version of the requested "
+                                    + "resource."),
                     @ApiResponse(
                             code = 500,
                             message = "Internal Server Error. \n Error occurred adding a lifecycle state.",

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/services/impl/ApplicationManagementAPIImpl.java

@@ -20,16 +20,27 @@ package org.wso2.carbon.device.application.mgt.api.services.impl;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.apache.cxf.jaxrs.ext.multipart.Attachment;
+import org.apache.cxf.jaxrs.ext.multipart.Multipart;
 import org.wso2.carbon.device.application.mgt.api.APIUtil;
+import org.wso2.carbon.device.application.mgt.api.FileStreamingOutput;
 import org.wso2.carbon.device.application.mgt.api.services.ApplicationManagementAPI;
 import org.wso2.carbon.device.application.mgt.common.Application;
 import org.wso2.carbon.device.application.mgt.common.ApplicationList;
+import org.wso2.carbon.device.application.mgt.common.ApplicationRelease;
 import org.wso2.carbon.device.application.mgt.common.Filter;
 import org.wso2.carbon.device.application.mgt.common.exception.ApplicationManagementException;
+import org.wso2.carbon.device.application.mgt.common.exception.ApplicationStorageManagementException;
 import org.wso2.carbon.device.application.mgt.common.services.ApplicationManager;
+import org.wso2.carbon.device.application.mgt.common.services.ApplicationReleaseManager;
+import org.wso2.carbon.device.application.mgt.common.services.ApplicationStorageManager;
 import org.wso2.carbon.device.application.mgt.core.util.Constants;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.List;
 import javax.validation.Valid;
 import javax.ws.rs.Consumes;
 import javax.ws.rs.DELETE;
@@ -40,13 +51,14 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
 import javax.ws.rs.QueryParam;
+import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
+
 /**
  * Implementation of Application Management related APIs.
  */
 @Produces({"application/json"})
-@Consumes({"application/json"})
 @Path("/applications")
 public class ApplicationManagementAPIImpl implements ApplicationManagementAPI {
 
@@ -160,6 +172,92 @@ public class ApplicationManagementAPIImpl implements ApplicationManagementAPI {
         }
     }
 
+    @Override
+    @POST
+    @Path("upload-image-artifacts/{uuid}")
+    public Response uploadApplicationArtifacts(@PathParam("uuid") String applicationUUID,
+            @Multipart("icon")Attachment iconFile, @Multipart("banner") Attachment bannerFile, @Multipart
+            ("screenshot") List<Attachment> attachmentList) {
+        ApplicationStorageManager applicationStorageManager = APIUtil.getApplicationStorageManager();
+        try {
+            InputStream iconFileStream;
+            InputStream bannerFileStream;
+            List<InputStream> attachments = new ArrayList<>();
+
+            if (iconFile != null) {
+                iconFileStream = iconFile.getDataHandler().getInputStream();
+            } else {
+                throw new ApplicationManagementException(
+                        "Icon file is not uploaded for the application " + applicationUUID);
+            }
+            if (bannerFile != null) {
+                bannerFileStream = bannerFile.getDataHandler().getInputStream();
+            } else {
+                throw new ApplicationManagementException(
+                        "Banner file is not uploaded for the application " + applicationUUID);
+            }
+            if (attachmentList != null && !attachmentList.isEmpty()) {
+                for (Attachment screenshot : attachmentList) {
+                    attachments.add(screenshot.getDataHandler().getInputStream());
+                }
+            } else {
+                throw new ApplicationManagementException(
+                        "Screen-shot are not uploaded for the application " + applicationUUID);
+            }
+            applicationStorageManager
+                    .uploadImageArtifacts(applicationUUID, iconFileStream, bannerFileStream, attachments);
+            return Response.status(Response.Status.OK)
+                    .entity("Successfully uploaded artifacts for the application " + applicationUUID).build();
+        } catch (ApplicationManagementException e) {
+            String msg = "Error occurred while creating the application";
+            log.error(msg, e);
+            return APIUtil.getResponse(e, Response.Status.BAD_REQUEST);
+        } catch (IOException e) {
+            log.error("Exception while trying to read icon, banner files for the application " + applicationUUID);
+            return APIUtil.getResponse(new ApplicationManagementException(
+                            "Exception while trying to read icon, " + "banner files for the application " +
+                                    applicationUUID, e), Response.Status.BAD_REQUEST);
+        }
+    }
+
+    @Override
+    @PUT
+    @Path("upload-image-artifacts/{uuid}")
+    public Response updateApplicationArtifacts(@PathParam("uuid") String applicationUUID,
+            @Multipart("icon")Attachment iconFile, @Multipart("banner") Attachment bannerFile, @Multipart
+            ("screenshot") List<Attachment> attachmentList) {
+        ApplicationStorageManager applicationStorageManager = APIUtil.getApplicationStorageManager();
+        try {
+            InputStream iconFileStream = null;
+            InputStream bannerFileStream = null;
+            List<InputStream> attachments = new ArrayList<>();
+
+            if (iconFile != null) {
+                iconFileStream = iconFile.getDataHandler().getInputStream();
+            }
+            if (bannerFile != null) {
+                bannerFileStream = bannerFile.getDataHandler().getInputStream();
+            }
+            if (attachmentList != null) {
+                for (Attachment screenshot : attachmentList) {
+                    attachments.add(screenshot.getDataHandler().getInputStream());
+                }
+            }
+            applicationStorageManager
+                    .uploadImageArtifacts(applicationUUID, iconFileStream, bannerFileStream, attachments);
+            return Response.status(Response.Status.OK)
+                    .entity("Successfully updated artifacts for the application " + applicationUUID).build();
+        } catch (ApplicationManagementException e) {
+            String msg = "Error occurred while updating the artifact for the application " + applicationUUID;
+            log.error(msg, e);
+            return APIUtil.getResponse(e, Response.Status.BAD_REQUEST);
+        } catch (IOException e) {
+            log.error("Exception while trying to read icon, banner files for the application " + applicationUUID);
+            return APIUtil.getResponse(new ApplicationManagementException(
+                    "Exception while trying to read icon, banner files for the application " +
+                            applicationUUID, e), Response.Status.BAD_REQUEST);
+        }
+    }
 
     @PUT
     @Consumes("application/json")
@@ -191,4 +289,79 @@ public class ApplicationManagementAPIImpl implements ApplicationManagementAPI {
         String responseMsg = "Successfully deleted the application: " + uuid;
         return Response.status(Response.Status.OK).entity(responseMsg).build();
     }
+
+    @Override
+    @POST
+    @Path("/release/{uuid}")
+    public Response createApplicationRelease(@PathParam("uuid") String applicationUUID,
+            @Multipart("applicationRelease") ApplicationRelease applicationRelease,
+            @Multipart("binaryFile") Attachment binaryFile) {
+        ApplicationReleaseManager applicationReleaseManager = APIUtil.getApplicationReleaseManager();
+        ApplicationStorageManager applicationStorageManager = APIUtil.getApplicationStorageManager();
+        try {
+            applicationRelease = applicationReleaseManager.createRelease(applicationUUID, applicationRelease);
+
+            if (binaryFile != null) {
+                applicationStorageManager.uploadReleaseArtifacts(applicationUUID, applicationRelease.getVersionName(),
+                        binaryFile.getDataHandler().getInputStream());
+            }
+            return Response.status(Response.Status.CREATED).entity(applicationRelease).build();
+        } catch (ApplicationManagementException e) {
+            log.error("Error while creating an application release for the application with UUID " + applicationUUID,
+                    e);
+            return APIUtil.getResponse(e, Response.Status.INTERNAL_SERVER_ERROR);
+        } catch (IOException e) {
+            String errorMessage =
+                    "Error while uploading binary file for the application release of the application with UUID "
+                            + applicationUUID;
+            log.error(errorMessage, e);
+            return APIUtil.getResponse(new ApplicationManagementException(errorMessage, e),
+                    Response.Status.INTERNAL_SERVER_ERROR);
+        }
+    }
+
+    @Override
+    @GET
+    @Produces(MediaType.APPLICATION_OCTET_STREAM)
+    @Path("/release-artifacts/{uuid}/{version}")
+    public Response getApplicationReleaseArtifacts(@PathParam("uuid") String applicationUUID,
+            @PathParam("version") String version) {
+        ApplicationStorageManager applicationStorageManager = APIUtil.getApplicationStorageManager();
+        try {
+            InputStream binaryFile = applicationStorageManager.getReleasedArtifacts(applicationUUID, version);
+            FileStreamingOutput fileStreamingOutput = new FileStreamingOutput(binaryFile);
+            Response.ResponseBuilder response = Response.status(Response.Status.OK).entity(fileStreamingOutput);
+            response.header("Content-Disposition", "attachment; filename=\"" + version + "\"");
+            return response.build();
+        } catch (ApplicationStorageManagementException e) {
+            log.error("Error while retrieving the binary file of the applcation release for the application UUID " +
+                    applicationUUID + " and version " + version, e);
+            if (e.getMessage().contains("Binary file does not exist")) {
+                return APIUtil.getResponse(e, Response.Status.NOT_FOUND);
+            } else {
+                return APIUtil.getResponse(e, Response.Status.INTERNAL_SERVER_ERROR);
+            }
+        }
+    }
+
+    @Override
+    @Path("/release/{uuid}")
+    @GET
+    public Response getApplicationReleases(@PathParam("uuid") String applicationUUID,
+            @QueryParam("version") String version) {
+        ApplicationReleaseManager applicationReleaseManager = APIUtil.getApplicationReleaseManager();
+        try {
+            if (version == null || version.isEmpty()) {
+                List<ApplicationRelease> applicationReleases = applicationReleaseManager.getReleases(applicationUUID);
+                return Response.status(Response.Status.OK).entity(applicationReleases).build();
+            } else {
+                ApplicationRelease applicationRelease = applicationReleaseManager.getRelease(applicationUUID, version);
+                return Response.status(Response.Status.OK).entity(applicationRelease).build();
+            }
+        } catch (ApplicationManagementException e) {
+            log.error("Error while getting all the application releases for the application with the UUID "
+                    + applicationUUID, e);
+            return APIUtil.getResponse(e, Response.Status.INTERNAL_SERVER_ERROR);
+        }
+    }
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/java/org/wso2/carbon/device/application/mgt/api/services/impl/LifecycleManagementAPIImpl.java

@@ -25,15 +25,18 @@ import org.wso2.carbon.device.application.mgt.common.LifecycleState;
 import org.wso2.carbon.device.application.mgt.common.exception.LifecycleManagementException;
 import org.wso2.carbon.device.application.mgt.common.services.LifecycleStateManager;
 
+import java.util.ArrayList;
+import java.util.List;
 import javax.ws.rs.DELETE;
 import javax.ws.rs.GET;
 import javax.ws.rs.POST;
 import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.core.Response;
-import java.util.ArrayList;
-import java.util.List;
 
+/**
+ * Lifecycle Management related jax-rs APIs.
+ */
 @Path("/lifecycles")
 public class LifecycleManagementAPIImpl implements LifecycleManagementAPI {
 

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/webapp/WEB-INF/cxf-servlet.xml

@@ -31,6 +31,7 @@ http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd">
         </jaxrs:serviceBeans>
         <jaxrs:providers>
             <ref bean="jsonProvider"/>
+            <ref bean="multipartProvider"/>
         </jaxrs:providers>
     </jaxrs:server>
 
@@ -38,6 +39,7 @@ http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd">
     <bean id="platformMgtServiceBean" class="org.wso2.carbon.device.application.mgt.api.services.impl.PlatformManagementAPIImpl" />
     <bean id="lifecycleMgtServiceBean" class="org.wso2.carbon.device.application.mgt.api.services.impl.LifecycleManagementAPIImpl" />
     <bean id="jsonProvider" class="org.wso2.carbon.device.application.mgt.api.JSONMessageHandler"/>
+    <bean id="multipartProvider" class="org.wso2.carbon.device.application.mgt.api.MultipartCustomProvider"/>
 
 </beans>
 

components/application-mgt/org.wso2.carbon.device.application.mgt.api/src/main/webapp/WEB-INF/web.xml

@@ -27,7 +27,7 @@
         <servlet-class>
             org.apache.cxf.transport.servlet.CXFServlet
         </servlet-class>
-    </servlet>
+     </servlet>
     <servlet-mapping>
         <servlet-name>CXFServlet</servlet-name>
         <url-pattern>/*</url-pattern>

components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/Application.java

@@ -26,7 +26,7 @@ import java.util.List;
 import java.util.Map;
 
 /**
- * Application represents the an Application in Application Store
+ * Application represents the an Application in Application Store.
  */
 public class Application {
 
@@ -250,4 +250,10 @@ public class Application {
     public void setUser(User user) {
         this.user = user;
     }
+
+    @Override
+    public String toString() {
+        return "UUID : " + uuid + "\tIdentifier : " + identifier + "\tName : " + name + "\tShort Description : "
+                + shortDescription + "\tLifecycle State : " + currentLifecycle.getLifecycleState();
+    }
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/ApplicationRelease.java

@@ -18,6 +18,8 @@
  */
 package org.wso2.carbon.device.application.mgt.common;
 
+import org.wso2.carbon.device.application.mgt.common.jaxrs.Exclude;
+
 import java.util.Date;
 import java.util.Map;
 
@@ -30,6 +32,7 @@ public class ApplicationRelease {
         PRODUCTION, ALPHA, BETA
     }
 
+    @Exclude
     private int id;
 
     private int versionId;
@@ -46,10 +49,6 @@ public class ApplicationRelease {
 
     private Application application;
 
-    private Date lifecycleStateModifiedAt;
-
-    private String lifecycleStateModifiedBy;
-
     private Map<String, String> properties;
 
     private boolean isDefault;
@@ -62,14 +61,6 @@ public class ApplicationRelease {
         this.id = id;
     }
 
-    public int getVersionId() {
-        return versionId;
-    }
-
-    public void setVersionId(int versionId) {
-        this.versionId = versionId;
-    }
-
     public String getVersionName() {
         return versionName;
     }
@@ -90,8 +81,8 @@ public class ApplicationRelease {
         return releaseChannel;
     }
 
-    public void setReleaseChannel(Channel releaseChannel) {
+    public void setReleaseChannel(String releaseChannel) {
-        this.releaseChannel = releaseChannel;
+        this.releaseChannel = Channel.valueOf(releaseChannel);
     }
 
     public String getReleaseDetails() {
@@ -118,22 +109,6 @@ public class ApplicationRelease {
         this.application = application;
     }
 
-    public Date getLifecycleStateModifiedAt() {
-        return lifecycleStateModifiedAt;
-    }
-
-    public void setLifecycleStateModifiedAt(Date lifecycleStateModifiedAt) {
-        this.lifecycleStateModifiedAt = lifecycleStateModifiedAt;
-    }
-
-    public String getLifecycleStateModifiedBy() {
-        return lifecycleStateModifiedBy;
-    }
-
-    public void setLifecycleStateModifiedBy(String lifecycleStateModifiedBy) {
-        this.lifecycleStateModifiedBy = lifecycleStateModifiedBy;
-    }
-
     public Map<String, String> getProperties() {
         return properties;
     }

components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/exception/ApplicationManagementException.java

@@ -22,8 +22,7 @@ package org.wso2.carbon.device.application.mgt.common.exception;
  * Represents the exception thrown during application management.
  */
 public class ApplicationManagementException extends Exception {
-
+    private String message;
-    String message;
 
     public ApplicationManagementException(String message, Throwable throwable) {
         super(message, throwable);

components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/exception/ApplicationStorageManagementException.java

@@ -16,11 +16,18 @@
  *   under the License.
  *
  */
-package org.wso2.carbon.device.application.mgt.common.services;
+
+package org.wso2.carbon.device.application.mgt.common.exception;
 
 /**
- * This interface manages all the operations related with Application Upload.
+ * Represents the exception thrown during storing and retrieving the artifacts.
  */
-public interface ApplicationUploadManager {
+public class ApplicationStorageManagementException extends ApplicationManagementException {
+    public ApplicationStorageManagementException(String message, Throwable ex) {
+        super(message, ex);
+    }
 
+    public ApplicationStorageManagementException(String message) {
+        super(message);
+    }
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/services/ApplicationManager.java

@@ -18,7 +18,10 @@
  */
 package org.wso2.carbon.device.application.mgt.common.services;
 
-import org.wso2.carbon.device.application.mgt.common.*;
+import org.wso2.carbon.device.application.mgt.common.Application;
+import org.wso2.carbon.device.application.mgt.common.ApplicationList;
+import org.wso2.carbon.device.application.mgt.common.Filter;
+import org.wso2.carbon.device.application.mgt.common.LifecycleStateTransition;
 import org.wso2.carbon.device.application.mgt.common.exception.ApplicationManagementException;
 
 import java.util.List;
@@ -62,11 +65,11 @@ public interface ApplicationManager {
     /**
      * To change the lifecycle of the Application.
      *
-     * @param applicationUUID     UUID of the Application
+     * @param applicationUuid     UUID of the Application
      * @param lifecycleIdentifier New life-cycle that need to be changed.
      * @throws ApplicationManagementException Application Management Exception.
      */
-    public void changeLifecycle(String applicationUUID, String lifecycleIdentifier) throws
+    public void changeLifecycle(String applicationUuid, String lifecycleIdentifier) throws
             ApplicationManagementException;
 
     /**
@@ -88,4 +91,5 @@ public interface ApplicationManager {
      */
     public Application getApplication(String uuid) throws ApplicationManagementException;
 
+
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/services/ApplicationReleaseManager.java

@@ -18,6 +18,11 @@
  */
 package org.wso2.carbon.device.application.mgt.common.services;
 
+import org.wso2.carbon.device.application.mgt.common.ApplicationRelease;
+import org.wso2.carbon.device.application.mgt.common.exception.ApplicationManagementException;
+
+import java.util.List;
+
 /**
  * ApplicationReleaseManager is responsible for handling all the operations related with
  * {@link org.wso2.carbon.device.application.mgt.common.ApplicationRelease} which involving addition, updation ,
@@ -26,4 +31,45 @@ package org.wso2.carbon.device.application.mgt.common.services;
  */
 public interface ApplicationReleaseManager {
 
+    /**
+     * To create an application release for an Application.
+     *
+     * @param appicationUuid UUID of the Application
+     * @param applicationRelease ApplicatonRelease that need to be be created.
+     * @return the unique id of the application release, if the application release succeeded else -1
+     */
+    public ApplicationRelease createRelease(String appicationUuid, ApplicationRelease applicationRelease) throws
+            ApplicationManagementException;
+
+    /**
+     * To get the application release of the Application/
+     * @param applicationUuid UUID of the Application.
+     * @param version Version of the ApplicationRelease that need to be retrieved.
+     * @return ApplicationRelease related with particular Application UUID and version.
+     * @throws ApplicationManagementException ApplicationManagementException
+     */
+    public ApplicationRelease getRelease(String applicationUuid, String version) throws ApplicationManagementException;
+
+    /**
+     * To get all the releases of a particular Application.
+     * @param applicationUuid UUID of the Application to get all the releases.
+     * @return the List of the Application releases related with the particular Application.
+     * @throws ApplicationManagementException Application Management Exception.
+     */
+    public List<ApplicationRelease> getReleases(String applicationUuid)  throws ApplicationManagementException;
+
+    /**
+     * To make a release as the default one for an application.
+     *
+     * @param id ID of the ApplicationRelease, that need to be made default.
+     */
+    public void makeDefaultRelease(int id) throws ApplicationManagementException;
+
+    /**
+     * To update with a new release for an Application.
+     *
+     * @param applicationRelease ApplicationRelease
+     * @throws ApplicationManagementException Application Management Exception.
+     */
+    public void updateRelease(ApplicationRelease applicationRelease) throws ApplicationManagementException;
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.common/src/main/java/org/wso2/carbon/device/application/mgt/common/services/ApplicationStorageManager.java

@@ -0,0 +1,61 @@
+/*
+ *   Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+ *
+ *   WSO2 Inc. licenses this file to you under the Apache License,
+ *   Version 2.0 (the "License"); you may not use this file except
+ *   in compliance with the License.
+ *   You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *   Unless required by applicable law or agreed to in writing,
+ *   software distributed under the License is distributed on an
+ *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *   KIND, either express or implied.  See the License for the
+ *   specific language governing permissions and limitations
+ *   under the License.
+ *
+ */
+
+package org.wso2.carbon.device.application.mgt.common.services;
+
+import org.wso2.carbon.device.application.mgt.common.exception.ApplicationStorageManagementException;
+
+import java.io.InputStream;
+import java.util.List;
+
+/**
+ * This manages all the storage related requirements of Application.
+ */
+public interface ApplicationStorageManager {
+    /**
+     * To upload image artifacts related with an Application.
+     *
+     * @param applicationUUID UUID of the application
+     * @param iconFile        Icon File input stream
+     * @param bannerFile      Banner File input stream
+     * @throws ApplicationStorageManagementException Application Storage Management Exception.
+     */
+    public void uploadImageArtifacts(String applicationUUID, InputStream iconFile, InputStream bannerFile,
+            List<InputStream> screenshots) throws ApplicationStorageManagementException;
+
+    /**
+     * To upload release artifacts for an Application.
+     * @param applicationUUID UUID of the application related with the release.
+     * @param versionName Name of version of the Applcation Release.
+     * @param binaryFile Binary File for the release.
+     * @throws ApplicationStorageManagementException Application Storage Management Exception.
+     */
+    public void uploadReleaseArtifacts(String applicationUUID, String versionName, InputStream binaryFile) throws
+            ApplicationStorageManagementException;
+
+    /**
+     * To get released artifacts for the particular version of the application.
+     * @param applicationUUID UUID of the Application
+     * @param versionName Version of the release to be retrieved
+     * @return the artifact related with the Application Release.
+     * @throws ApplicationStorageManagementException Application Storage Management Exception.
+     */
+    public InputStream getReleasedArtifacts(String applicationUUID, String versionName) throws
+            ApplicationStorageManagementException;
+}

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/config/Artifacts.java

@@ -0,0 +1,49 @@
+/*
+ *   Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+ *
+ *   WSO2 Inc. licenses this file to you under the Apache License,
+ *   Version 2.0 (the "License"); you may not use this file except
+ *   in compliance with the License.
+ *   You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *   Unless required by applicable law or agreed to in writing,
+ *   software distributed under the License is distributed on an
+ *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *   KIND, either express or implied.  See the License for the
+ *   specific language governing permissions and limitations
+ *   under the License.
+ *
+ */
+package org.wso2.carbon.device.application.mgt.core.config;
+
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlRootElement;
+
+/**
+ * This represents Artifacts element in application-mgt configuration file.
+ */
+@XmlRootElement(name = "Artifacts")
+public class Artifacts {
+    private String imageLocation;
+    private String binaryLocation;
+
+    @XmlElement(name = "ImageLocation", required = true)
+    public String getImageLocation() {
+        return imageLocation;
+    }
+
+    public void setImageLocation(String imageLocation) {
+        this.imageLocation = imageLocation;
+    }
+
+    @XmlElement(name = "BinaryLocation", required = true)
+    public String getBinaryLocation() {
+        return binaryLocation;
+    }
+
+    public void setBinaryLocation(String binaryLocation) {
+        this.binaryLocation = binaryLocation;
+    }
+}

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/config/Configuration.java

@@ -33,6 +33,8 @@ public class Configuration {
 
     private List<Extension> extensions;
 
+    private Artifacts artifacts;
+
     @XmlElement(name = "DatasourceName", required = true)
     public String getDatasourceName() {
         return datasourceName;
@@ -51,6 +53,15 @@ public class Configuration {
     public void setExtensions(List<Extension> extensions) {
         this.extensions = extensions;
     }
+
+    @XmlElement(name = "Artifacts")
+    public Artifacts getArtifacts() {
+        return artifacts;
+    }
+
+    public void setArtifacts(Artifacts artifacts) {
+        this.artifacts = artifacts;
+    }
 }
 
 

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/config/Extension.java

@@ -87,7 +87,8 @@ public class Extension {
         PlatformManager,
         VisibilityTypeManager,
         SubscriptionManager,
-        VisibilityManager
+        VisibilityManager,
+        ApplicationStorageManager
     }
 }
 

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/ApplicationReleaseDAO.java

@@ -18,9 +18,42 @@
  */
 package org.wso2.carbon.device.application.mgt.core.dao;
 
+import org.wso2.carbon.device.application.mgt.common.ApplicationRelease;
+import org.wso2.carbon.device.application.mgt.core.exception.ApplicationManagementDAOException;
+
+import java.util.List;
+
 /**
  * This is responsible for Application Release related DAO operations.
  */
 public interface ApplicationReleaseDAO {
 
+    /**
+     * To create an Application release.
+     *
+     * @param applicationRelease Application Release that need to be created.
+     * @return Unique ID of the relevant release.
+     * @throws ApplicationManagementDAOException Application Management DAO Exception.
+     */
+    ApplicationRelease createRelease(ApplicationRelease applicationRelease) throws
+            ApplicationManagementDAOException;
+
+    /**
+     * To get a release details with the particular version.
+     * @param applicationUuid UUID of the application to get the release.
+     * @param versionName Name of the version
+     * @return ApplicationRelease for the particular version of the given application
+     * @throws ApplicationManagementDAOException Application Management DAO Exception.
+     */
+    ApplicationRelease getRelease(String applicationUuid, String versionName) throws ApplicationManagementDAOException;
+
+    /**
+     * To get all the releases of a particular application.
+     *
+     * @param applicationUUID Application UUID
+     * @return list of the application releases
+     * @throws ApplicationManagementDAOException Application Management DAO Exception.
+     */
+    List<ApplicationRelease> getApplicationReleases(String applicationUUID) throws ApplicationManagementDAOException;
+
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/LifecycleStateDAO.java

@@ -24,6 +24,9 @@ import org.wso2.carbon.device.application.mgt.core.exception.DAOException;
 
 import java.util.List;
 
+/**
+ * This is responsible for all the DAO operations related to Lifecycle state.
+ */
 public interface LifecycleStateDAO {
 
     LifecycleState getLifeCycleStateByIdentifier(String identifier) throws ApplicationManagementDAOException;

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/common/DAOFactory.java

@@ -23,9 +23,11 @@ import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.device.application.mgt.common.exception.UnsupportedDatabaseEngineException;
 import org.wso2.carbon.device.application.mgt.core.config.ConfigurationManager;
 import org.wso2.carbon.device.application.mgt.core.dao.ApplicationDAO;
+import org.wso2.carbon.device.application.mgt.core.dao.ApplicationReleaseDAO;
 import org.wso2.carbon.device.application.mgt.core.dao.LifecycleStateDAO;
 import org.wso2.carbon.device.application.mgt.core.dao.PlatformDAO;
 import org.wso2.carbon.device.application.mgt.core.dao.impl.application.GenericApplicationDAOImpl;
+import org.wso2.carbon.device.application.mgt.core.dao.impl.application.release.GenericApplicationReleaseDAOImpl;
 import org.wso2.carbon.device.application.mgt.core.dao.impl.lifecyclestate.GenericLifecycleStateImpl;
 import org.wso2.carbon.device.application.mgt.core.dao.impl.platform.GenericPlatformDAOImpl;
 import org.wso2.carbon.device.application.mgt.core.dao.impl.platform.OracleMsSQLPlatformDAOImpl;
@@ -96,6 +98,23 @@ public class DAOFactory {
         throw new IllegalStateException("Database engine has not initialized properly.");
     }
 
+    /**
+     * To get the instance of ApplicationReleaseDAOImplementation of the particular database engine.
+     * @return specific ApplicationReleaseDAOImplementation
+     */
+    public static ApplicationReleaseDAO getApplicationReleaseDAO() {
+        if (databaseEngine != null) {
+            switch (databaseEngine) {
+            case Constants.DataBaseTypes.DB_TYPE_H2:
+            case Constants.DataBaseTypes.DB_TYPE_MYSQL:
+                return new GenericApplicationReleaseDAOImpl();
+            default:
+                throw new UnsupportedDatabaseEngineException("Unsupported database engine : " + databaseEngine);
+            }
+        }
+        throw new IllegalStateException("Database engine has not initialized properly.");
+    }
+
     /**
      * This method initializes the databases by creating the database.
      *

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/impl/AbstractDAOImpl.java

@@ -23,6 +23,9 @@ import org.wso2.carbon.device.application.mgt.core.util.ConnectionManagerUtil;
 
 import java.sql.Connection;
 
+/**
+ * This class deals with getting the DB connection.
+ */
 public abstract class AbstractDAOImpl {
 
     protected Connection getDBConnection() throws DBConnectionException {

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/impl/application/release/GenericApplicationReleaseDAOImpl.java

@@ -0,0 +1,208 @@
+/*
+ *   Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+ *
+ *   WSO2 Inc. licenses this file to you under the Apache License,
+ *   Version 2.0 (the "License"); you may not use this file except
+ *   in compliance with the License.
+ *   You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *   Unless required by applicable law or agreed to in writing,
+ *   software distributed under the License is distributed on an
+ *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *   KIND, either express or implied.  See the License for the
+ *   specific language governing permissions and limitations
+ *   under the License.
+ *
+ */
+
+package org.wso2.carbon.device.application.mgt.core.dao.impl.application.release;
+
+import org.wso2.carbon.device.application.mgt.common.ApplicationRelease;
+import org.wso2.carbon.device.application.mgt.common.exception.DBConnectionException;
+import org.wso2.carbon.device.application.mgt.core.dao.ApplicationReleaseDAO;
+import org.wso2.carbon.device.application.mgt.core.dao.common.Util;
+import org.wso2.carbon.device.application.mgt.core.dao.impl.AbstractDAOImpl;
+import org.wso2.carbon.device.application.mgt.core.exception.ApplicationManagementDAOException;
+import org.wso2.carbon.device.application.mgt.core.util.ConnectionManagerUtil;
+
+import java.sql.Connection;
+import java.sql.Date;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * GenericApplicationReleaseDAOImpl holds the implementation of ApplicationRelease related DAO operations.
+ */
+public class GenericApplicationReleaseDAOImpl extends AbstractDAOImpl implements ApplicationReleaseDAO  {
+
+    @Override
+    public ApplicationRelease createRelease(ApplicationRelease applicationRelease) throws
+            ApplicationManagementDAOException {
+        Connection connection;
+        PreparedStatement statement = null;
+        ResultSet resultSet = null;
+        String sql = "insert into APPM_APPLICATION_RELEASE(VERSION_NAME, RESOURCE, RELEASE_CHANNEL ,"
+                + "RELEASE_DETAILS, CREATED_AT, APPM_APPLICATION_ID, IS_DEFAULT) values (?, ?, ?, ?, ?, ?, ?)";
+        int index = 0;
+        boolean isBatchExecutionSupported = ConnectionManagerUtil.isBatchQuerySupported();
+
+        try {
+            connection = this.getDBConnection();
+            statement = connection.prepareStatement(sql);
+            statement.setString(++index, applicationRelease.getVersionName());
+            statement.setString(++index, applicationRelease.getResource());
+            statement.setString(++index, String.valueOf(applicationRelease.getReleaseChannel()));
+            statement.setString(++index, applicationRelease.getReleaseDetails());
+            statement.setDate(++index, new Date(applicationRelease.getCreatedAt().getTime()));
+            statement.setInt(++index, applicationRelease.getApplication().getId());
+            statement.setBoolean(++index, applicationRelease.isDefault());
+            statement.executeUpdate();
+            resultSet = statement.getGeneratedKeys();
+            if (resultSet.next()) {
+                applicationRelease.setId(resultSet.getInt(1));
+            }
+
+            if (applicationRelease.getProperties() != null && applicationRelease.getProperties().size() != 0) {
+                sql = "INSERT INTO APPM_RELEASE_PROPERTY (PROP_KEY, PROP_VALUE, APPLICATION_RELEASE_ID) VALUES (?,?,?)";
+                statement = connection.prepareStatement(sql);
+                for (Object entry : applicationRelease.getProperties().entrySet()) {
+                    Map.Entry<String, String> property = (Map.Entry) entry;
+                    statement.setString(1, property.getKey());
+                    statement.setString(2, property.getValue());
+                    statement.setInt(3, applicationRelease.getId());
+                    if (isBatchExecutionSupported) {
+                        statement.addBatch();
+                    } else {
+                        statement.execute();
+                    }
+                }
+                if (isBatchExecutionSupported) {
+                    statement.executeBatch();
+                }
+            }
+            return applicationRelease;
+        } catch (SQLException e) {
+            throw new ApplicationManagementDAOException(
+                    "SQL Exception while trying to release an application (UUID : " + applicationRelease
+                            .getApplication().getUuid() + "), by executing the query " + sql, e);
+        } catch (DBConnectionException e) {
+            throw new ApplicationManagementDAOException(
+                    "Database Connection Exception while trying to release the " + "applcation with UUID "
+                            + applicationRelease.getApplication().getUuid(), e);
+        } finally {
+            Util.cleanupResources(statement, resultSet);
+        }
+    }
+
+    @Override
+    public ApplicationRelease getRelease(String applicationUuid, String versionName)
+            throws ApplicationManagementDAOException {
+        Connection connection;
+        PreparedStatement statement = null;
+        ResultSet resultSet = null;
+        String sql = "SELECT * FROM APPM_APPLICATION_RELEASE WHERE VERSION_NAME = ?  AND APPM_APPLICATION_ID = "
+                + "(SELECT ID FROM APPM_APPLICATION WHERE UUID = ?)";
+        ApplicationRelease applicationRelease = null;
+        ResultSet rsProperties = null;
+
+        try {
+            connection = this.getDBConnection();
+            statement = connection.prepareStatement(sql);
+            statement.setString(1, versionName);
+            statement.setString(2, applicationUuid);
+            resultSet = statement.executeQuery();
+
+            if (resultSet.next()) {
+                applicationRelease = new ApplicationRelease();
+                applicationRelease.setVersionName(versionName);
+                applicationRelease.setDefault(resultSet.getBoolean("IS_DEFAULT"));
+                applicationRelease.setCreatedAt(resultSet.getDate("CREATED_AT"));
+                applicationRelease.setReleaseChannel(resultSet.getString("RELEASE_CHANNEL"));
+                applicationRelease.setReleaseDetails(resultSet.getString("RELEASE_DETAILS"));
+                applicationRelease.setResource(resultSet.getString("RESOURCE"));
+
+                sql = "SELECT * FROM APPM_RELEASE_PROPERTY WHERE APPLICATION_RELEASE_ID=?";
+                statement = connection.prepareStatement(sql);
+                statement.setInt(1, resultSet.getInt("ID"));
+                rsProperties = statement.executeQuery();
+
+                Map<String, String> properties = new HashMap<>();
+                while (rsProperties.next()) {
+                    properties.put(rsProperties.getString("PROP_KEY"),
+                            rsProperties.getString("PROP_VAL"));
+                }
+                applicationRelease.setProperties(properties);
+            }
+            return applicationRelease;
+        } catch (DBConnectionException e) {
+            throw new ApplicationManagementDAOException("Database connection exception while trying to gett the "
+                    + "release details of the application with UUID " + applicationUuid + " and version " +
+                    versionName, e);
+        } catch (SQLException e) {
+            throw new ApplicationManagementDAOException("Error while getting release details of the application " +
+                    applicationUuid +  " and version " + versionName + " , while executing the query " + sql, e);
+        } finally {
+            Util.cleanupResources(statement, resultSet);
+            Util.cleanupResources(null, rsProperties);
+        }
+    }
+
+    @Override
+    public List<ApplicationRelease> getApplicationReleases(String applicationUUID)
+            throws ApplicationManagementDAOException {
+        Connection connection;
+        PreparedStatement statement = null;
+        ResultSet resultSet = null;
+        String sql = "SELECT * FROM APPM_APPLICATION_RELEASE WHERE APPM_APPLICATION_ID = (SELECT ID FROM "
+                + "APPM_APPLICATION WHERE UUID = ?)";
+        List<ApplicationRelease> applicationReleases = new ArrayList<>();
+        ResultSet rsProperties = null;
+
+        try {
+            connection = this.getDBConnection();
+            statement = connection.prepareStatement(sql);
+            statement.setString(1, applicationUUID);
+            resultSet = statement.executeQuery();
+
+            while (resultSet.next()) {
+                ApplicationRelease applicationRelease = new ApplicationRelease();
+                applicationRelease.setVersionName(resultSet.getString("VERSION_NAME"));
+                applicationRelease.setDefault(resultSet.getBoolean("IS_DEFAULT"));
+                applicationRelease.setCreatedAt(resultSet.getDate("CREATED_AT"));
+                applicationRelease.setReleaseChannel(resultSet.getString("RELEASE_CHANNEL"));
+                applicationRelease.setReleaseDetails(resultSet.getString("RELEASE_DETAILS"));
+                applicationRelease.setResource(resultSet.getString("RESOURCE"));
+
+                sql = "SELECT * FROM APPM_RELEASE_PROPERTY WHERE APPLICATION_RELEASE_ID= ?";
+                statement = connection.prepareStatement(sql);
+                statement.setInt(1, resultSet.getInt("ID"));
+                rsProperties = statement.executeQuery();
+
+                Map<String, String> properties = new HashMap<>();
+                while (rsProperties.next()) {
+                    properties.put(rsProperties.getString("PROP_KEY"), rsProperties.getString("PROP_VAL"));
+                }
+                applicationRelease.setProperties(properties);
+                applicationReleases.add(applicationRelease);
+            }
+            return applicationReleases;
+        } catch (DBConnectionException e) {
+            throw new ApplicationManagementDAOException("Database connection exception while trying to get the "
+                    + "release details of the application with UUID " + applicationUUID, e);
+        } catch (SQLException e) {
+            throw new ApplicationManagementDAOException(
+                    "Error while getting all the release details of the " + "application " + applicationUUID
+                            + ", while executing the query " + sql, e);
+        } finally {
+            Util.cleanupResources(statement, resultSet);
+            Util.cleanupResources(null, rsProperties);
+        }
+    }
+}

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/dao/impl/lifecyclestate/GenericLifecycleStateImpl.java

@@ -33,6 +33,9 @@ import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 
+/**
+ * Concrete implementation for Lifecycle related DB operations.
+ */
 public class GenericLifecycleStateImpl extends AbstractDAOImpl implements LifecycleStateDAO {
 
     @Override
@@ -82,7 +85,7 @@ public class GenericLifecycleStateImpl extends AbstractDAOImpl implements Lifecy
             String sql = "SELECT IDENTIFIER, NAME, DESCRIPTION FROM APPM_LIFECYCLE_STATE";
             stmt = conn.prepareStatement(sql);
             rs = stmt.executeQuery();
-            while(rs.next()) {
+            while (rs.next()) {
                 LifecycleState lifecycleState = new LifecycleState();
                 lifecycleState.setIdentifier(rs.getString("IDENTIFIER"));
                 lifecycleState.setName(rs.getString("NAME"));

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/exception/ApplicationManagementDAOException.java

@@ -20,6 +20,9 @@ package org.wso2.carbon.device.application.mgt.core.exception;
 
 import org.wso2.carbon.device.application.mgt.common.exception.ApplicationManagementException;
 
+/**
+ * Exception thrown during the Application Management DAO operations.
+ */
 public class ApplicationManagementDAOException extends ApplicationManagementException {
 
     public ApplicationManagementDAOException(String message, Throwable throwable) {

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/exception/DAOException.java

@@ -17,6 +17,9 @@
  */
 package org.wso2.carbon.device.application.mgt.core.exception;
 
+/**
+ * This exception will be thrown when there is an issue with Lifecycle related DAO operations.
+ */
 public class DAOException extends Exception {
 
     public DAOException(String message) {

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/exception/NotFoundException.java

@@ -20,6 +20,9 @@ package org.wso2.carbon.device.application.mgt.core.exception;
 
 import org.wso2.carbon.device.application.mgt.common.exception.ApplicationManagementException;
 
+/**
+ * This exception will be thrown when the requested application or platform not found.
+ */
 public class NotFoundException extends ApplicationManagementException {
 
     public NotFoundException(String message, Throwable throwable) {

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/exception/ValidationException.java

@@ -20,6 +20,9 @@ package org.wso2.carbon.device.application.mgt.core.exception;
 
 import org.wso2.carbon.device.application.mgt.common.exception.ApplicationManagementException;
 
+/**
+ * This exception will be thrown when the initial validation fails to perform an operation.
+ */
 public class ValidationException extends ApplicationManagementException {
 
     public ValidationException(String message, Throwable throwable) {

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/ApplicationManagerImpl.java

@@ -46,10 +46,14 @@ import org.wso2.carbon.user.api.UserRealm;
 import org.wso2.carbon.user.api.UserStoreException;
 import org.wso2.carbon.utils.multitenancy.MultitenantUtils;
 
+import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 
+/**
+ * Default Concrete implementation of Application Management related implementations.
+ */
 public class ApplicationManagerImpl implements ApplicationManager {
 
     private static final Log log = LogFactory.getLog(ApplicationManagerImpl.class);
@@ -182,15 +186,15 @@ public class ApplicationManagerImpl implements ApplicationManager {
     }
 
     @Override
-    public void changeLifecycle(String applicationUUID, String lifecycleIdentifier) throws
+    public void changeLifecycle(String applicationUuid, String lifecycleIdentifier) throws
             ApplicationManagementException {
         boolean isAvailableNextState = false;
         String userName = PrivilegedCarbonContext.getThreadLocalCarbonContext().getUsername();
-        List<LifecycleStateTransition> nextLifeCycles = getLifeCycleStates(applicationUUID);
+        List<LifecycleStateTransition> nextLifeCycles = getLifeCycleStates(applicationUuid);
 
         for (LifecycleStateTransition lifecycleStateTransition : nextLifeCycles) {
             if (log.isDebugEnabled()) {
-                log.debug("Lifecycle state of the application " + applicationUUID + " can be changed to"
+                log.debug("Lifecycle state of the application " + applicationUuid + " can be changed to"
                                 + lifecycleStateTransition.getNextState());
             }
             if (lifecycleStateTransition.getNextState().equalsIgnoreCase(lifecycleIdentifier)) {
@@ -200,13 +204,13 @@ public class ApplicationManagerImpl implements ApplicationManager {
         }
         if (!isAvailableNextState) {
             throw new ApplicationManagementException("User " + userName + " does not have the permission to change "
-                    + "the lifecycle state of the application " + applicationUUID + " to lifecycle state "
+                    + "the lifecycle state of the application " + applicationUuid + " to lifecycle state "
                     + lifecycleIdentifier);
         }
         try {
             ConnectionManagerUtil.beginDBTransaction();
             ApplicationDAO applicationDAO = DAOFactory.getApplicationDAO();
-            applicationDAO.changeLifecycle(applicationUUID, lifecycleIdentifier, userName);
+            applicationDAO.changeLifecycle(applicationUuid, lifecycleIdentifier, userName);
             ConnectionManagerUtil.commitDBTransaction();
         } catch (ApplicationManagementDAOException e) {
             ConnectionManagerUtil.rollbackDBTransaction();
@@ -282,6 +286,12 @@ public class ApplicationManagerImpl implements ApplicationManager {
         }
     }
 
+    public void uploadArtifacts(String applicationUUID, InputStream iconFileStream, InputStream bannerFileStream,
+            List<InputStream> screenShotStreams)
+            throws ApplicationManagementException {
+
+    }
+
     /**
      * To check whether current user is application owner or admin.
      *
@@ -297,7 +307,8 @@ public class ApplicationManagerImpl implements ApplicationManager {
             }
         } catch (UserStoreException e) {
             throw new ApplicationManagementException("Userstore exception while checking whether user is an admin", e);
-        } try {
+        }
+        try {
             ConnectionManagerUtil.openDBConnection();
             Application application = DAOFactory.getApplicationDAO().getApplication(applicationUUID);
             return application.getUser().getUserName().equals(userName)

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/ApplicationReleaseManagerImpl.java

@@ -18,8 +18,139 @@
  */
 package org.wso2.carbon.device.application.mgt.core.impl;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.wso2.carbon.device.application.mgt.common.Application;
+import org.wso2.carbon.device.application.mgt.common.ApplicationRelease;
+import org.wso2.carbon.device.application.mgt.common.exception.ApplicationManagementException;
 import org.wso2.carbon.device.application.mgt.common.services.ApplicationReleaseManager;
+import org.wso2.carbon.device.application.mgt.core.dao.common.DAOFactory;
+import org.wso2.carbon.device.application.mgt.core.exception.ApplicationManagementDAOException;
+import org.wso2.carbon.device.application.mgt.core.internal.DataHolder;
+import org.wso2.carbon.device.application.mgt.core.util.ConnectionManagerUtil;
 
+import java.util.Date;
+import java.util.List;
+
+/**
+ * Concrete implementation for Application Release Management related tasks.
+ */
 public class ApplicationReleaseManagerImpl implements ApplicationReleaseManager {
+    private static Log log = LogFactory.getLog(ApplicationReleaseManagerImpl.class);
+
+    @Override
+    public ApplicationRelease createRelease(String appicationUuid, ApplicationRelease applicationRelease) throws
+            ApplicationManagementException {
+        Application application = validateReleaseCreateRequest(appicationUuid, applicationRelease);
+        if (log.isDebugEnabled()) {
+            log.debug("Application release request is received for the application " + application.toString());
+        }
+        applicationRelease.setCreatedAt(new Date());
+        try {
+            ConnectionManagerUtil.beginDBTransaction();
+            applicationRelease.setApplication(application);
+            applicationRelease = DAOFactory.getApplicationReleaseDAO().createRelease(applicationRelease);
+            ConnectionManagerUtil.commitDBTransaction();
+            return applicationRelease;
+        } catch (ApplicationManagementDAOException e) {
+            ConnectionManagerUtil.rollbackDBTransaction();
+            throw e;
+        } finally {
+            ConnectionManagerUtil.closeDBConnection();
+        }
+    }
+
+    @Override
+    public ApplicationRelease getRelease(String applicationUuid, String version) throws
+            ApplicationManagementException {
+        Application application = validationGetReleaseRequest(applicationUuid);
+        if (log.isDebugEnabled()) {
+            log.debug("Application release retrieval request is received for the application " +
+                    application.toString() + " and version " + version);
+        }
+        try {
+            ConnectionManagerUtil.openDBConnection();
+            return DAOFactory.getApplicationReleaseDAO().getRelease(applicationUuid, version);
+        } finally {
+            ConnectionManagerUtil.closeDBConnection();
+        }
+    }
+
+    @Override
+    public List<ApplicationRelease> getReleases(String applicationUuid) throws ApplicationManagementException {
+        Application application = validationGetReleaseRequest(applicationUuid);
+        if (log.isDebugEnabled()) {
+            log.debug("Request is received to retrieve all the releases related with the application " +
+                    application.toString());
+        }
+        try {
+            ConnectionManagerUtil.openDBConnection();
+            return DAOFactory.getApplicationReleaseDAO().getApplicationReleases(applicationUuid);
+        } finally {
+            ConnectionManagerUtil.closeDBConnection();
+        }
+    }
+
+    @Override
+    public void makeDefaultRelease(int id) throws ApplicationManagementException {
+
+    }
+
+    @Override
+    public void updateRelease(ApplicationRelease applicationRelease) throws ApplicationManagementException {
+
+    }
+
+    /**
+     * To validate the pre-request of the ApplicationRelease.
+     *
+     * @param applicationUuid UUID of the Application.
+     * @return Application related with the UUID
+     */
+    private Application validationGetReleaseRequest(String applicationUuid) throws ApplicationManagementException {
+        if (applicationUuid == null) {
+            throw new ApplicationManagementException("Application UUID is null. Application UUID is a required "
+                    + "parameter to get the releases related to a particular application.");
+        }
+        Application application = DataHolder.getInstance().getApplicationManager().getApplication(applicationUuid);
+        if (application == null) {
+            throw new ApplicationManagementException(
+                    "Application with UUID " + applicationUuid + " does not exist. Cannot "
+                            + "retrieve the releases for a non-existing application.");
+        }
+        return application;
+    }
 
+    /**
+     * To validate a create release request to make sure all the pre-conditions satisfied.
+     *
+     * @param applicationUuid    UUID of the Application.
+     * @param applicationRelease ApplicationRelease that need to be created.
+     * @return the Application related with the particular Application Release
+     * @throws ApplicationManagementException Application Management Exception.
+     */
+    private Application validateReleaseCreateRequest(String applicationUuid, ApplicationRelease applicationRelease)
+            throws ApplicationManagementException {
+        if (applicationUuid == null) {
+            throw new ApplicationManagementException("Application UUID is null. Application UUID is a required "
+                    + "parameter to do the application release");
+        }
+        Application application = DataHolder.getInstance().getApplicationManager().getApplication(applicationUuid);
+        if (application == null) {
+            throw new ApplicationManagementException(
+                    "Application with UUID " + applicationUuid + " does not exist. Cannot "
+                            + "release an application that is not existing");
+        }
+        if (applicationRelease == null || applicationRelease.getVersionName() == null) {
+            throw new ApplicationManagementException("ApplicationRelease version name is a mandatory parameter for "
+                    + "creating release. It cannot be found.");
+        }
+        if (getRelease(applicationUuid, applicationRelease.getVersionName()) != null) {
+            throw new ApplicationManagementException(
+                    "Application Release for the Application UUID " + applicationUuid + " " + "with the version "
+                            + applicationRelease.getVersionName() + " already exists. Cannot create an "
+                            + "application release with the same version.");
+        }
+        return application;
+    }
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/ApplicationStorageManagerImpl.java

@@ -0,0 +1,219 @@
+/*
+ *   Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
+ *
+ *   WSO2 Inc. licenses this file to you under the Apache License,
+ *   Version 2.0 (the "License"); you may not use this file except
+ *   in compliance with the License.
+ *   You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *   Unless required by applicable law or agreed to in writing,
+ *   software distributed under the License is distributed on an
+ *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *   KIND, either express or implied.  See the License for the
+ *   specific language governing permissions and limitations
+ *   under the License.
+ *
+ */
+
+package org.wso2.carbon.device.application.mgt.core.impl;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.wso2.carbon.device.application.mgt.common.Application;
+import org.wso2.carbon.device.application.mgt.common.exception.ApplicationManagementException;
+import org.wso2.carbon.device.application.mgt.common.exception.ApplicationStorageManagementException;
+import org.wso2.carbon.device.application.mgt.common.services.ApplicationStorageManager;
+import org.wso2.carbon.device.application.mgt.core.internal.DataHolder;
+import org.wso2.carbon.device.application.mgt.core.util.Constants;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+
+/**
+ * This class contains the default concrete implementation of ApplicationStorage Management.
+ */
+public class ApplicationStorageManagerImpl implements ApplicationStorageManager {
+    private static final Log log = LogFactory.getLog(ApplicationStorageManagerImpl.class);
+
+    @Override
+    public void uploadImageArtifacts(String applicationUUID, InputStream iconFileStream, InputStream bannerFileStream,
+            List<InputStream> screenShotStreams) throws ApplicationStorageManagementException {
+        Application application;
+        try {
+            application = DataHolder.getInstance().getApplicationManager().getApplication(applicationUUID);
+        } catch (ApplicationManagementException e) {
+            throw new ApplicationStorageManagementException(
+                    "Exception while retrieving the application details for " + "the application with UUID "
+                            + applicationUUID);
+        }
+        if (application == null) {
+            throw new ApplicationStorageManagementException("Application with UUID " + applicationUUID + " does not "
+                    + "exist. Cannot upload the artifacts to non-existing application.");
+        }
+        String artifactDirectoryPath = Constants.artifactPath + application.getId();
+        if (log.isDebugEnabled()) {
+            log.debug("Artifact Directory Path for saving the artifacts related with application " + applicationUUID
+                    + " is " + artifactDirectoryPath);
+        }
+        createArtifactDirectory(artifactDirectoryPath);
+        if (iconFileStream != null) {
+            String iconName = application.getIconName();
+            iconName = (iconName == null) ? "icon" : iconName;
+            try {
+                saveFile(iconFileStream, artifactDirectoryPath + File.separator + iconName);
+            } catch (IOException e) {
+                throw new ApplicationStorageManagementException(
+                        "IO Exception while saving the icon file in the server for " + "the application "
+                                + applicationUUID, e);
+            }
+        }
+        if (bannerFileStream != null) {
+            String bannerName = application.getBannerName();
+            bannerName = (bannerName == null) ? "banner" : bannerName;
+            try {
+                saveFile(bannerFileStream, artifactDirectoryPath + File.separator + bannerName);
+            } catch (IOException e) {
+                throw new ApplicationStorageManagementException(
+                        "IO Exception while saving the banner file in the server for" + " the application "
+                                + applicationUUID, e);
+            }
+        }
+        if (screenShotStreams != null) {
+            int count = 1;
+            String screenshotName;
+            List<String> screenShotNames = application.getScreenshots();
+            boolean isScreenShotNameExist = (screenShotNames == null || screenShotNames.isEmpty());
+            int screenShotNameLength = isScreenShotNameExist ? screenShotNames.size() : 0;
+            for (InputStream screenshotStream : screenShotStreams) {
+                try {
+                    if (isScreenShotNameExist && count <= screenShotNameLength) {
+                        screenshotName = screenShotNames.get(count);
+                    } else {
+                        screenshotName = "screenshot_" + count;
+                    }
+                    saveFile(screenshotStream, artifactDirectoryPath + File.separator + screenshotName);
+                    count++;
+                } catch (IOException e) {
+                    throw new ApplicationStorageManagementException(
+                            "IO Exception while saving the screens hots for the " + "application " + applicationUUID,
+                            e);
+                }
+            }
+        }
+    }
+
+    @Override
+    public void uploadReleaseArtifacts(String applicationUUID, String versionName, InputStream binaryFile)
+            throws ApplicationStorageManagementException {
+        Application application;
+        try {
+            application = DataHolder.getInstance().getApplicationManager().getApplication(applicationUUID);
+        } catch (ApplicationManagementException e) {
+            throw new ApplicationStorageManagementException("Exception while retrieving the application details for "
+                    + "the application with UUID " + applicationUUID);
+        }
+        if (application == null) {
+            throw new ApplicationStorageManagementException("Application with UUID " + applicationUUID + " does not "
+                    + "exist. Cannot upload release artifacts for not existing application.");
+        }
+        String artifactDirectoryPath = Constants.artifactPath + application.getId();
+        if (log.isDebugEnabled()) {
+            log.debug("Artifact Directory Path for saving the application release related artifacts related with "
+                    + "application " + applicationUUID + " is " + artifactDirectoryPath);
+        }
+
+        createArtifactDirectory(artifactDirectoryPath);
+        if (binaryFile != null) {
+            try {
+                saveFile(binaryFile, artifactDirectoryPath + File.separator + versionName);
+            } catch (IOException e) {
+                throw new ApplicationStorageManagementException(
+                        "IO Exception while saving the release artifacts in the server for the application "
+                                + applicationUUID, e);
+            }
+        }
+
+    }
+
+    @Override
+    public InputStream getReleasedArtifacts(String applicationUUID, String versionName)
+            throws ApplicationStorageManagementException {
+        Application application;
+        try {
+            application = DataHolder.getInstance().getApplicationManager().getApplication(applicationUUID);
+        } catch (ApplicationManagementException e) {
+            throw new ApplicationStorageManagementException("Exception while retrieving the application details for "
+                    + "the application with UUID " + applicationUUID);
+        }
+        if (application == null) {
+            throw new ApplicationStorageManagementException("Application with UUID " + applicationUUID + " does not "
+                    + "exist. Cannot retrieve release artifacts for not existing application.");
+        }
+        String artifactPath = Constants.artifactPath + application.getId() + File.separator + versionName;
+
+        if (log.isDebugEnabled()) {
+            log.debug("ApplicationRelease artifacts are searched in the location " + artifactPath);
+        }
+
+        File binaryFile = new File(artifactPath);
+
+        if (!binaryFile.exists()) {
+            throw new ApplicationStorageManagementException("Binary file does not exist for this release");
+        } else {
+            try {
+                return new FileInputStream(artifactPath);
+            } catch (FileNotFoundException e) {
+                throw new ApplicationStorageManagementException("Binary file does not exist for the version " +
+                        versionName + " for the application ", e);
+            }
+        }
+    }
+
+    /**
+     * To save a file in a given location.
+     *
+     * @param inputStream Stream of the file.
+     * @param path        Path the file need to be saved in.
+     */
+    private void saveFile(InputStream inputStream, String path) throws IOException {
+        OutputStream outStream = null;
+        try {
+            byte[] buffer = new byte[inputStream.available()];
+            inputStream.read(buffer);
+            outStream = new FileOutputStream(new File(path));
+            outStream.write(buffer);
+        } finally {
+            if (inputStream != null) {
+                inputStream.close();
+            }
+            if (outStream != null) {
+                outStream.close();
+            }
+        }
+    }
+
+    /**
+     * This method is responsible for creating artifact parent directories in the given path.
+     *
+     * @param artifactDirectoryPath Path for the artifact directory.
+     * @throws ApplicationStorageManagementException Application Storage Management Exception.
+     */
+    private void createArtifactDirectory(String artifactDirectoryPath) throws ApplicationStorageManagementException {
+        File artifactDirectory = new File(artifactDirectoryPath);
+
+        if (!artifactDirectory.exists()) {
+            if (!artifactDirectory.mkdirs()) {
+                throw new ApplicationStorageManagementException(
+                        "Cannot create directories in the path to save the application related artifacts");
+            }
+        }
+    }
+}

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/ApplicationUploadManagerImpl.java

@@ -1,29 +0,0 @@
-/*
- *   Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
- *
- *   WSO2 Inc. licenses this file to you under the Apache License,
- *   Version 2.0 (the "License"); you may not use this file except
- *   in compliance with the License.
- *   You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- *   Unless required by applicable law or agreed to in writing,
- *   software distributed under the License is distributed on an
- *   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- *   KIND, either express or implied.  See the License for the
- *   specific language governing permissions and limitations
- *   under the License.
- *
- */
-package org.wso2.carbon.device.application.mgt.core.impl;
-
-
-import org.wso2.carbon.device.application.mgt.common.services.ApplicationUploadManager;
-
-public class ApplicationUploadManagerImpl implements ApplicationUploadManager {
-
-    public ApplicationUploadManagerImpl(String uploadPath){
-
-    }
-}

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/LifecycleStateManagerImpl.java

@@ -30,6 +30,9 @@ import org.wso2.carbon.device.application.mgt.core.util.ConnectionManagerUtil;
 
 import java.util.List;
 
+/**
+ * Concrete implementation of Lifecycle state management.
+ */
 public class LifecycleStateManagerImpl implements LifecycleStateManager {
 
     private static final Log log = LogFactory.getLog(LifecycleStateManagerImpl.class);

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/impl/PlatformManagerImpl.java

@@ -89,16 +89,11 @@ public class PlatformManagerImpl implements PlatformManager {
                     + "PlatformManager level");
         }
         try {
-            ConnectionManagerUtil.beginDBTransaction();
+            ConnectionManagerUtil.openDBConnection();
             platforms = DAOFactory.getPlatformDAO().getPlatforms(tenantId);
-            ConnectionManagerUtil.commitDBTransaction();
+        } catch (DBConnectionException e) {
-        } catch (DBConnectionException | TransactionManagementException e) {
-            ConnectionManagerUtil.rollbackDBTransaction();
             throw new PlatformManagementDAOException(
                     "Database Connection Exception while getting the platforms for the tenant : " + tenantId, e);
-        } catch (PlatformManagementDAOException e) {
-            ConnectionManagerUtil.rollbackDBTransaction();
-            throw e;
         } finally {
             ConnectionManagerUtil.closeDBConnection();
         }
@@ -136,20 +131,15 @@ public class PlatformManagerImpl implements PlatformManager {
         Platform platform = getPlatformFromInMemory(tenantId, identifier);
         if (platform == null) {
             try {
-                ConnectionManagerUtil.beginDBTransaction();
+                ConnectionManagerUtil.openDBConnection();
                 platform = DAOFactory.getPlatformDAO().getPlatform(tenantId, identifier);
-                ConnectionManagerUtil.commitDBTransaction();
                 if (platform != null) {
                     return platform;
                 }
-            } catch (DBConnectionException | TransactionManagementException e) {
+            } catch (DBConnectionException e) {
-                ConnectionManagerUtil.rollbackDBTransaction();
                 throw new PlatformManagementDAOException(
                         "Database Connection Exception while trying to get the " + "platform with the id :" + identifier
                                 + " for the tenant : " + tenantId, e);
-            } catch (PlatformManagementDAOException e) {
-                ConnectionManagerUtil.rollbackDBTransaction();
-                throw e;
             } finally {
                 ConnectionManagerUtil.closeDBConnection();
             }
@@ -455,18 +445,16 @@ public class PlatformManagerImpl implements PlatformManager {
     private void validateBeforeRegister(int tenantId, Platform platform) throws PlatformManagementException {
         validatePlatformSharing(tenantId, platform);
         try {
-            ConnectionManagerUtil.beginDBTransaction();
+            ConnectionManagerUtil.openDBConnection();
             int existingPlatformId = DAOFactory.getPlatformDAO()
                     .getSuperTenantAndOwnPlatforms(platform.getIdentifier(), tenantId);
-            ConnectionManagerUtil.commitDBTransaction();
             if (existingPlatformId != -1) {
                 throw new PlatformManagementException(
                         "Another platform exists with the identifier " + platform.getIdentifier() + " in the tenant "
                                 + tenantId + " or super-tenant. Please choose a "
                                 + "different identifier for your platform");
             }
-        } catch (TransactionManagementException | DBConnectionException e) {
+        } catch (DBConnectionException e) {
-            ConnectionManagerUtil.rollbackDBTransaction();
             throw new PlatformManagementException(
                     "Error while checking pre-conditions before registering" + " platform identifier '" + platform
                             .getIdentifier() + "' for the tenant :" + tenantId);
@@ -488,10 +476,9 @@ public class PlatformManagerImpl implements PlatformManager {
             PlatformManagementException {
         validatePlatformSharing(tenantId, platform);
         try {
-            ConnectionManagerUtil.beginDBTransaction();
+            ConnectionManagerUtil.openDBConnection();
             Platform oldPlatform = DAOFactory.getPlatformDAO().getTenantOwnedPlatform(tenantId, oldPlatformIdentifier);
             if (oldPlatform == null) {
-                ConnectionManagerUtil.commitDBTransaction();
                 throw new PlatformManagementException(
                         "Cannot update platform. Platform with identifier : " + oldPlatformIdentifier
                                 + " does not exist for the tenant : " + tenantId);
@@ -499,7 +486,6 @@ public class PlatformManagerImpl implements PlatformManager {
             if (platform.getIdentifier() != null && !platform.getIdentifier().equals(oldPlatformIdentifier)) {
                 int existingPlatformID = DAOFactory.getPlatformDAO()
                         .getSuperTenantAndOwnPlatforms(platform.getIdentifier(), tenantId);
-                ConnectionManagerUtil.commitDBTransaction();
                 if (existingPlatformID == -1) {
                     throw new PlatformManagementException(
                             "Cannot update the identifier of the platform from '" + oldPlatformIdentifier + "' to '"
@@ -509,8 +495,7 @@ public class PlatformManagerImpl implements PlatformManager {
                 }
             }
             return oldPlatform;
-        } catch (TransactionManagementException | DBConnectionException e) {
+        } catch (DBConnectionException e) {
-            ConnectionManagerUtil.rollbackDBTransaction();
             throw new PlatformManagementException(
                     "Database error while validating the platform update with the " + "platform identifier: "
                             + oldPlatformIdentifier + " for the tenant :" + tenantId);
@@ -532,18 +517,16 @@ public class PlatformManagerImpl implements PlatformManager {
                             + " cannot be shared by the tenant domain - " + tenantId);
         }
         try {
-            ConnectionManagerUtil.beginDBTransaction();
+            ConnectionManagerUtil.openDBConnection();
             if (platform.isShared()) {
                 int sharedPlatform = DAOFactory.getPlatformDAO().getMultiTenantPlatforms(platform.getIdentifier());
-                ConnectionManagerUtil.commitDBTransaction();
                 if (sharedPlatform != -1) {
                     throw new PlatformManagementException(
                             "Platform '" + platform.getIdentifier() + "' cannot be shared as some other tenants have "
                                     + "platforms with the same identifier.");
                 }
             }
-        } catch (TransactionManagementException | DBConnectionException e) {
+        } catch (DBConnectionException e) {
-            ConnectionManagerUtil.rollbackDBTransaction();
             throw new PlatformManagementException(
                     "Error while checking platform sharing conditions for " + " platform identifier '" + platform
                             .getIdentifier() + "' for the tenant :" + tenantId);

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/internal/DataHolder.java

@@ -20,7 +20,7 @@ package org.wso2.carbon.device.application.mgt.core.internal;
 
 import org.wso2.carbon.device.application.mgt.common.services.ApplicationManager;
 import org.wso2.carbon.device.application.mgt.common.services.ApplicationReleaseManager;
-import org.wso2.carbon.device.application.mgt.common.services.ApplicationUploadManager;
+import org.wso2.carbon.device.application.mgt.common.services.ApplicationStorageManager;
 import org.wso2.carbon.device.application.mgt.common.services.CategoryManager;
 import org.wso2.carbon.device.application.mgt.common.services.CommentsManager;
 import org.wso2.carbon.device.application.mgt.common.services.LifecycleStateManager;
@@ -58,7 +58,7 @@ public class DataHolder {
 
     private VisibilityManager visibilityManager;
 
-    private ApplicationUploadManager applicationUploadManager;
+    private ApplicationStorageManager applicationStorageManager;
 
     private static final DataHolder applicationMgtDataHolder = new DataHolder();
 
@@ -150,14 +150,6 @@ public class DataHolder {
         this.visibilityManager = visibilityManager;
     }
 
-    public void setApplicationUploadManager(ApplicationUploadManager applicationUploadManager) {
-        this.applicationUploadManager = applicationUploadManager;
-    }
-
-    public ApplicationUploadManager getApplicationUploadManager() {
-        return applicationUploadManager;
-    }
-
     public RealmService getRealmService() {
         return realmService;
     }
@@ -166,4 +158,11 @@ public class DataHolder {
         this.realmService = realmService;
     }
 
+    public void setApplicationStorageManager(ApplicationStorageManager applicationStorageManager) {
+        this.applicationStorageManager = applicationStorageManager;
+    }
+
+    public ApplicationStorageManager getApplicationStorageManager() {
+        return applicationStorageManager;
+    }
 }

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/internal/ServiceComponent.java

@@ -25,7 +25,7 @@ import org.osgi.service.component.ComponentContext;
 import org.wso2.carbon.device.application.mgt.common.exception.InvalidConfigurationException;
 import org.wso2.carbon.device.application.mgt.common.services.ApplicationManager;
 import org.wso2.carbon.device.application.mgt.common.services.ApplicationReleaseManager;
-import org.wso2.carbon.device.application.mgt.common.services.ApplicationUploadManager;
+import org.wso2.carbon.device.application.mgt.common.services.ApplicationStorageManager;
 import org.wso2.carbon.device.application.mgt.common.services.CategoryManager;
 import org.wso2.carbon.device.application.mgt.common.services.CommentsManager;
 import org.wso2.carbon.device.application.mgt.common.services.LifecycleStateManager;
@@ -37,6 +37,7 @@ import org.wso2.carbon.device.application.mgt.core.config.ConfigurationManager;
 import org.wso2.carbon.device.application.mgt.core.dao.common.DAOFactory;
 import org.wso2.carbon.device.application.mgt.core.exception.ApplicationManagementDAOException;
 import org.wso2.carbon.device.application.mgt.core.util.ApplicationManagementUtil;
+import org.wso2.carbon.device.application.mgt.core.util.Constants;
 import org.wso2.carbon.device.mgt.core.service.DeviceManagementProviderService;
 import org.wso2.carbon.ndatasource.core.DataSourceService;
 import org.wso2.carbon.user.core.service.RealmService;
@@ -77,6 +78,8 @@ public class ServiceComponent {
             String datasourceName = ConfigurationManager.getInstance().getConfiguration().getDatasourceName();
             DAOFactory.init(datasourceName);
 
+            Constants.artifactPath = ConfigurationManager.getInstance().getConfiguration().getArtifacts()
+                    .getBinaryLocation();
             ApplicationManager applicationManager = ApplicationManagementUtil.getApplicationManagerInstance();
             DataHolder.getInstance().setApplicationManager(applicationManager);
             bundleContext.registerService(ApplicationManager.class.getName(), applicationManager, null);
@@ -114,9 +117,10 @@ public class ServiceComponent {
             DataHolder.getInstance().setVisibilityTypeManager(visibilityTypeManager);
             bundleContext.registerService(VisibilityTypeManager.class.getName(), visibilityTypeManager, null);
 
-            ApplicationUploadManager uploadManager = ApplicationManagementUtil.getApplicationUploadManagerInstance();
+            ApplicationStorageManager applicationStorageManager = ApplicationManagementUtil
-            DataHolder.getInstance().setApplicationUploadManager(uploadManager);
+                    .getApplicationStorageManagerInstance();
-            bundleContext.registerService(ApplicationUploadManager.class.getName(), uploadManager, null);
+            DataHolder.getInstance().setApplicationStorageManager(applicationStorageManager);
+            bundleContext.registerService(ApplicationStorageManager.class.getName(), applicationStorageManager, null);
 
             bundleContext.registerService(Axis2ConfigurationContextObserver.class.getName(),
                     new PlatformManagementAxis2ConfigurationObserverImpl(), null);

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/util/ApplicationManagementUtil.java

@@ -23,7 +23,7 @@ import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.device.application.mgt.common.exception.InvalidConfigurationException;
 import org.wso2.carbon.device.application.mgt.common.services.ApplicationManager;
 import org.wso2.carbon.device.application.mgt.common.services.ApplicationReleaseManager;
-import org.wso2.carbon.device.application.mgt.common.services.ApplicationUploadManager;
+import org.wso2.carbon.device.application.mgt.common.services.ApplicationStorageManager;
 import org.wso2.carbon.device.application.mgt.common.services.CategoryManager;
 import org.wso2.carbon.device.application.mgt.common.services.CommentsManager;
 import org.wso2.carbon.device.application.mgt.common.services.LifecycleStateManager;
@@ -99,10 +99,11 @@ public class ApplicationManagementUtil {
         return getInstance(extension, SubscriptionManager.class);
     }
 
-    public static ApplicationUploadManager getApplicationUploadManagerInstance() throws InvalidConfigurationException {
+    public static ApplicationStorageManager getApplicationStorageManagerInstance() throws
+            InvalidConfigurationException {
         ConfigurationManager configurationManager = ConfigurationManager.getInstance();
-        Extension extension = configurationManager.getExtension(Extension.Name.ApplicationUploadManager);
+        Extension extension = configurationManager.getExtension(Extension.Name.ApplicationStorageManager);
-        return getInstance(extension, ApplicationUploadManager.class);
+        return getInstance(extension, ApplicationStorageManager.class);
     }
 
     private static <T> T getInstance(Extension extension, Class<T> cls) throws InvalidConfigurationException {

components/application-mgt/org.wso2.carbon.device.application.mgt.core/src/main/java/org/wso2/carbon/device/application/mgt/core/util/Constants.java

@@ -53,4 +53,9 @@ public class Constants {
      */
     public static final String[] LIFE_CYCLES = {"CREATED", "IN REVIEW", "APPROVED", "REJECTED", "PUBLISHED",
             "UNPUBLISHED", "RETIRED"};
+
+    /**
+     * Path to save the Application related artifacts.
+     */
+    public static String artifactPath = "";
 }

features/application-mgt/org.wso2.carbon.device.application.mgt.server.feature/src/main/resources/conf/application-mgt.xml

@@ -55,6 +55,13 @@
         <Extension name="VisibilityTypeManager">
             <ClassName>org.wso2.carbon.device.application.mgt.core.impl.VisibilityTypeManagerImpl</ClassName>
         </Extension>
+        <Extension name="ApplicationStorageManager">
+            <ClassName>org.wso2.carbon.device.application.mgt.core.impl.ApplicationStorageManagerImpl</ClassName>
+        </Extension>
     </Extensions>
 
+    <Artifacts>
+        <ImageLocation>${carbon.home}/repository/resources/mobileapps/images/</ImageLocation>
+        <BinaryLocation>${carbon.home}/repository/resources/mobileapps/binary/</BinaryLocation>
+    </Artifacts>
 </ApplicationManagementConfiguration>

features/application-mgt/org.wso2.carbon.device.application.mgt.server.feature/src/main/resources/dbscripts/cdm/application-mgt/h2.sql

@@ -181,15 +181,14 @@ CREATE INDEX FK_APPLICATION_PROPERTY_APPLICATION ON APPM_APPLICATION_PROPERTY(AP
 -- -----------------------------------------------------
 CREATE TABLE IF NOT EXISTS APPM_APPLICATION_RELEASE (
   ID INT NOT NULL AUTO_INCREMENT,
-  VERSION_ID INT NOT NULL,
   VERSION_NAME VARCHAR(100) NOT NULL,
   RESOURCE TEXT NULL,
   RELEASE_CHANNEL VARCHAR(50) NULL,
   RELEASE_DETAILS TEXT NULL,
   CREATED_AT DATETIME NOT NULL,
   APPM_APPLICATION_ID INT NOT NULL,
-  PUBLISHED TINYINT NULL,
+  IS_DEFAULT TINYINT NULL,
-  PRIMARY KEY (ID, APPM_APPLICATION_ID),
+  PRIMARY KEY (APPM_APPLICATION_ID, VERSION_NAME),
   CONSTRAINT FK_APPLICATION_VERSION_APPLICATION
     FOREIGN KEY (APPM_APPLICATION_ID)
     REFERENCES APPM_APPLICATION (ID)

features/application-mgt/org.wso2.carbon.device.application.mgt.server.feature/src/main/resources/dbscripts/cdm/application-mgt/mysql.sql

@@ -189,7 +189,6 @@ CREATE TABLE IF NOT EXISTS `APPM_APPLICATION_PROPERTY` (
 -- -----------------------------------------------------
 CREATE TABLE IF NOT EXISTS `APPM_APPLICATION_RELEASE` (
   `ID` INT NOT NULL AUTO_INCREMENT,
-  `VERSION_ID` INT NOT NULL,
   `VERSION_NAME` VARCHAR(100) NOT NULL,
   `RESOURCE` TEXT NULL,
   `RELEASE_CHANNEL` VARCHAR(50) NULL,
@@ -197,7 +196,7 @@ CREATE TABLE IF NOT EXISTS `APPM_APPLICATION_RELEASE` (
   `CREATED_AT` DATETIME NOT NULL,
   `APPM_APPLICATION_ID` INT NOT NULL,
   `IS_DEFAULT` TINYINT(1) NULL,
-  PRIMARY KEY (`ID`, `APPM_APPLICATION_ID`),
+  PRIMARY KEY (`APPM_APPLICATION_ID`, `VERSION_NAME`),
   INDEX `FK_APPLICATION_VERSION_APPLICATION` (`APPM_APPLICATION_ID` ASC),
   CONSTRAINT `FK_APPLICATION_VERSION_APPLICATION`
   FOREIGN KEY (`APPM_APPLICATION_ID`)