resolved device type download issue in windows OS and added log support for service clients.

components/device-types/androidsense-plugin/org.wso2.carbon.device.mgt.iot.androidsense.agent/app/src/main/java/org/wso2/carbon/iot/android/sense/util/SenseClientAsyncExecutor.java

@@ -118,7 +118,8 @@ public class SenseClientAsyncExecutor extends AsyncTask<String, Void, Map<String
                     new BasicAuthRequestInterceptor(apiApplicationKey.getConsumerKey(), apiApplicationKey.getConsumerSecret()))
                     .contract(new JAXRSContract()).encoder(new JacksonEncoder()).decoder(new JacksonDecoder())
                     .target(TokenIssuerService.class, endpoint);
-            accessTokenInfo = tokenIssuerService.getToken(PASSWORD_GRANT_TYPE, username, password, "device_" + deviceId, SCOPE);
+            accessTokenInfo = tokenIssuerService.getToken(PASSWORD_GRANT_TYPE, username, password, "device_"
+                    + deviceId + " " + SCOPE);
 
             //DeviceRegister
             AndroidSenseManagerService androidSenseManagerService = Feign.builder().client(disableHostnameVerification)

components/device-types/androidsense-plugin/org.wso2.carbon.device.mgt.iot.androidsense.agent/app/src/main/java/org/wso2/carbon/iot/android/sense/util/dto/TokenIssuerService.java

@@ -29,7 +29,7 @@ public interface TokenIssuerService {
     @POST
     @Produces(MediaType.APPLICATION_JSON)
     AccessTokenInfo getToken(@QueryParam("grant_type") String grant, @QueryParam("username") String username,
-            @QueryParam("password") String password, @QueryParam("deviceId") String deviceId, @QueryParam("scope") String scope);
+            @QueryParam("password") String password, @QueryParam("scope") String scope);
 
     @POST
     @Produces(MediaType.APPLICATION_JSON)

components/device-types/arduino-plugin/org.wso2.carbon.device.mgt.iot.arduino.api/src/main/java/org/wso2/carbon/device/mgt/iot/arduino/service/impl/ArduinoServiceImpl.java

@@ -182,12 +182,11 @@ public class ArduinoServiceImpl implements ArduinoService {
             String username = APIUtil.getAuthenticatedUser() + "@" + PrivilegedCarbonContext
                     .getThreadLocalCarbonContext().getTenantDomain();
             ZipArchive zipFile = createDownloadFile(username, deviceName);
-            Response.ResponseBuilder response = Response.ok(FileUtils.readFileToByteArray(zipFile.getZipFile()));
+            Response.ResponseBuilder response = Response.ok(zipFile.getZipFileContent());
             response.status(Response.Status.OK);
             response.type("application/zip");
             response.header("Content-Disposition", "attachment; filename=\"" + zipFile.getFileName() + "\"");
             Response resp = response.build();
-            zipFile.getZipFile().delete();
             return resp;
         } catch (IllegalArgumentException ex) {
             return Response.status(400).entity(ex.getMessage()).build();//bad request
@@ -200,9 +199,6 @@ public class ArduinoServiceImpl implements ArduinoService {
         } catch (APIManagerException ex) {
             log.error(ex.getMessage(), ex);
             return Response.status(500).entity(ex.getMessage()).build();
-        } catch (IOException ex) {
-            log.error(ex.getMessage(), ex);
-            return Response.status(500).entity(ex.getMessage()).build();
         } catch (UserStoreException ex) {
             log.error(ex.getMessage(), ex);
             return Response.status(500).entity(ex.getMessage()).build();

components/device-types/arduino-plugin/org.wso2.carbon.device.mgt.iot.arduino.api/src/main/java/org/wso2/carbon/device/mgt/iot/arduino/service/impl/util/ZipArchive.java

@@ -25,16 +25,16 @@ import java.io.File;
  */
 public class ZipArchive {
 
-    private File zipFile = null;
+    private byte[] zipFileContent = null;
     private String fileName = null;
 
-    public ZipArchive(String fileName, File zipFile) {
+    public ZipArchive(String fileName, byte[] zipFile) {
         this.fileName = fileName;
-        this.zipFile = zipFile;
+        this.zipFileContent = zipFile;
     }
 
-    public File getZipFile() {
-        return zipFile;
+    public byte[] getZipFileContent() {
+        return zipFileContent;
     }
 
     public String getFileName() {

components/device-types/arduino-plugin/org.wso2.carbon.device.mgt.iot.arduino.api/src/main/java/org/wso2/carbon/device/mgt/iot/arduino/service/impl/util/ZipUtil.java

@@ -34,6 +34,7 @@ import org.wso2.carbon.utils.NetworkUtils;
 
 import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
+import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
@@ -57,7 +58,6 @@ import java.util.zip.ZipOutputStream;
  */
 public class ZipUtil {
 
-    private static final String HTTP_PORT_PROPERTY = "httpPort";
     private static final String CONFIG_TYPE = "general";
     private static final Log log = LogFactory.getLog(ZipUtil.class);
     private static final String LOCALHOST = "localhost";
@@ -69,8 +69,6 @@ public class ZipUtil {
                                     String refreshToken) throws DeviceManagementException {
 
         String sketchFolder = "repository" + File.separator + "resources" + File.separator + "sketches";
-        String archivesPath = CarbonUtils.getCarbonHome() + File.separator + sketchFolder + File.separator + "archives" +
-                        File.separator + deviceId;
         String templateSketchPath = sketchFolder + File.separator + deviceType;
         String iotServerIP;
 
@@ -113,7 +111,7 @@ public class ZipUtil {
             contextParams.put("DEVICE_REFRESH_TOKEN", refreshToken);
 
             ZipArchive zipFile;
-            zipFile = getSketchArchive(archivesPath, templateSketchPath, contextParams, deviceName);
+            zipFile = getSketchArchive(templateSketchPath, contextParams, deviceName);
             return zipFile;
         } catch (IOException e) {
             throw new DeviceManagementException("Zip File Creation Failed", e);
@@ -122,7 +120,7 @@ public class ZipUtil {
         }
     }
 
-    public static String getServerUrl() {
+    private static String getServerUrl() {
         try {
             return org.apache.axis2.util.Utils.getIpAddress();
         } catch (SocketException e) {
@@ -131,32 +129,26 @@ public class ZipUtil {
         }
     }
 
-    private static ZipArchive getSketchArchive(String archivesPath, String templateSketchPath, Map contextParams
+    private ZipArchive getSketchArchive(String templateSketchPath, Map contextParams
             , String zipFileName)
             throws DeviceManagementException, IOException {
         String sketchPath = CarbonUtils.getCarbonHome() + File.separator + templateSketchPath;
-        FileUtils.deleteDirectory(new File(archivesPath));//clear directory
-        FileUtils.deleteDirectory(new File(archivesPath + ".zip"));//clear zip
-        if (!new File(archivesPath).mkdirs()) { //new dir
-            String message = "Could not create directory at path: " + archivesPath;
-            log.error(message);
-            throw new DeviceManagementException(message);
-        }
         zipFileName = zipFileName + ".zip";
         try {
             Map<String, List<String>> properties = getProperties(sketchPath + File.separator + "sketch" + ".properties");
             List<String> templateFiles = properties.get("templates");
+            List<TemplateFile> processTemplateFiles = new ArrayList<>();
 
             for (String templateFile : templateFiles) {
-                parseTemplate(templateSketchPath + File.separator + templateFile, archivesPath + File.separator + templateFile,
-                              contextParams);
+                TemplateFile tFile = new TemplateFile();
+                tFile.setContent(parseTemplate(templateSketchPath + File.separator + templateFile, contextParams));
+                tFile.setFileName(templateFile);
+                processTemplateFiles.add(tFile);
             }
 
             templateFiles.add("sketch.properties");         // ommit copying the props file
-            copyFolder(new File(sketchPath), new File(archivesPath), templateFiles);
-            createZipArchive(archivesPath);
-            FileUtils.deleteDirectory(new File(archivesPath));
-            File zip = new File(archivesPath + ".zip");
+
+            byte[] zip =  createZipArchive(templateSketchPath, processTemplateFiles);
             return new ZipArchive(zipFileName, zip);
         } catch (IOException ex) {
             throw new DeviceManagementException(
@@ -196,148 +188,124 @@ public class ZipUtil {
         }
     }
 
-    private static void parseTemplate(String srcFile, String dstFile, Map contextParams) throws IOException {
+    private static String parseTemplate(String srcFile, Map contextParams) throws IOException {
         //read from file
         FileInputStream inputStream = null;
-        FileOutputStream outputStream = null;
         try {
             inputStream = new FileInputStream(srcFile);
-            outputStream = new FileOutputStream(dstFile);
             String content = IOUtils.toString(inputStream, StandardCharsets.UTF_8.toString());
             Iterator iterator = contextParams.entrySet().iterator();
             while (iterator.hasNext()) {
                 Map.Entry mapEntry = (Map.Entry) iterator.next();
                 content = content.replaceAll("\\$\\{" + mapEntry.getKey() + "\\}", mapEntry.getValue().toString());
             }
-            IOUtils.write(content, outputStream, StandardCharsets.UTF_8.toString());
+            return content;
         } finally {
             if (inputStream != null) {
                 inputStream.close();
             }
-            if (outputStream != null) {
-                outputStream.close();
-            }
-        }
-    }
-
-    private static void copyFolder(File src, File dest, List<String> excludeFileNames) throws IOException {
-
-        if (src.isDirectory()) {
-            //if directory not exists, create it
-            if (!dest.exists() && !dest.mkdirs()) {
-                String message = "Could not create directory at path: " + dest;
-                log.error(message);
-                throw new IOException(message);
-            }
-            //list all the directory contents
-            String files[] = src.list();
-
-            if (files == null) {
-                log.warn("There are no files insides the directory " + src.getAbsolutePath());
-                return;
-            }
-
-            for (String file : files) {
-                //construct the src and dest file structure
-                File srcFile = new File(src, file);
-                File destFile = new File(dest, file);
-                //recursive copy
-                copyFolder(srcFile, destFile, excludeFileNames);
-            }
-
-        } else {
-            for (String fileName : excludeFileNames) {
-                if (src.getName().equals(fileName)) {
-                    return;
-                }
-            }
-            //if file, then copy it
-            //Use bytes stream to support all file types
-            InputStream in = null;
-            OutputStream out = null;
-
-            try {
-                in = new FileInputStream(src);
-                out = new FileOutputStream(dest);
-
-                byte[] buffer = new byte[1024];
-
-                int length;
-                //copy the file content in bytes
-                while ((length = in.read(buffer)) > 0) {
-                    out.write(buffer, 0, length);
-                }
-            } finally {
-                if (in != null) {
-                    in.close();
-                }
-                if (out != null) {
-                    out.close();
-                }
-            }
         }
     }
 
-    private static boolean createZipArchive(String srcFolder) throws IOException {
-        BufferedInputStream origin = null;
+    private static byte[] createZipArchive(String srcFolder, List<TemplateFile> processTemplateFiles) throws IOException {
         ZipOutputStream out = null;
-
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
         try {
-            final int BUFFER = 2048;
-            FileOutputStream dest = new FileOutputStream(new File(srcFolder + ".zip"));
-            out = new ZipOutputStream(new BufferedOutputStream(dest));
-            byte data[] = new byte[BUFFER];
+            out = new ZipOutputStream(new BufferedOutputStream(baos));
             File subDir = new File(srcFolder);
             String subdirList[] = subDir.list();
             if (subdirList == null) {
                 log.warn("The sub directory " + subDir.getAbsolutePath() + " is empty");
-                return false;
+                return null;
             }
             for (String sd : subdirList) {
                 // get a list of files from current directory
-                File f = new File(srcFolder + "/" + sd);
+                File f = new File(srcFolder + File.separator + sd);
                 if (f.isDirectory()) {
                     String files[] = f.list();
 
                     if (files == null) {
                         log.warn("The current directory " + f.getAbsolutePath() + " is empty. Has no files");
-                        return false;
+                        return null;
                     }
 
                     for (int i = 0; i < files.length; i++) {
-                        FileInputStream fi = new FileInputStream(srcFolder + "/" + sd + "/" + files[i]);
-                        origin = new BufferedInputStream(fi, BUFFER);
-                        ZipEntry entry = new ZipEntry(sd + "/" + files[i]);
+                        boolean fileAdded = false;
+                        for (TemplateFile templateFile : processTemplateFiles) {
+                            if (files[i].equals(templateFile.getFileName())) {
+                                ZipEntry entry = new ZipEntry(templateFile.getFileName());
                                 out.putNextEntry(entry);
-                        int count;
-                        while ((count = origin.read(data, 0, BUFFER)) != -1) {
-                            out.write(data, 0, count);
-                            out.flush();
+                                out.write(templateFile.getContent().getBytes());
+                                out.closeEntry();
+                                fileAdded = true;
+                                break;
+                            } else if (f.getName().equals("sketch.properties")) {
+                                fileAdded = true;
+                                break;
+                            }
+                        }
+                        if (fileAdded) {
+                            continue;
                         }
+                        ZipEntry entry = new ZipEntry(sd + File.separator + files[i]);
+                        out.putNextEntry(entry);
+                        out.write(IOUtils.toByteArray(new FileInputStream(srcFolder + File.separator + sd
+                                                                                  + File.separator + files[i])));
+                        out.closeEntry();
 
                     }
                 } else //it is just a file
                 {
-                    FileInputStream fi = new FileInputStream(f);
-                    origin = new BufferedInputStream(fi, BUFFER);
-                    ZipEntry entry = new ZipEntry(sd);
+                    boolean fileAdded = false;
+                    for (TemplateFile templateFile : processTemplateFiles) {
+                        if (f.getName().equals(templateFile.getFileName())) {
+                            ZipEntry entry = new ZipEntry(templateFile.getFileName());
                             out.putNextEntry(entry);
-                    int count;
-                    while ((count = origin.read(data, 0, BUFFER)) != -1) {
-                        out.write(data, 0, count);
-                        out.flush();
+                            out.write(templateFile.getContent().getBytes());
+                            out.closeEntry();
+                            fileAdded = true;
+                            break;
+                        } else if (f.getName().equals("sketch.properties")) {
+                            fileAdded = true;
+                            break;
                         }
                     }
+                    if (fileAdded) {
+                        continue;
+                    }
+                    ZipEntry entry = new ZipEntry(sd);
+                    out.putNextEntry(entry);
+                    out.write(IOUtils.toByteArray(new FileInputStream(f)));
+                    out.closeEntry();
                 }
-            out.flush();
-        } finally {
-            if (origin != null) {
-                origin.close();
             }
+            out.finish();
+        } finally {
             if (out != null) {
                 out.close();
             }
         }
-        return true;
+        return baos.toByteArray();
+    }
+
+    public class TemplateFile {
+        private String content;
+        private String fileName;
+
+        public String getContent() {
+            return content;
+        }
+
+        public void setContent(String content) {
+            this.content = content;
+        }
+
+        public String getFileName() {
+            return fileName;
+        }
+
+        public void setFileName(String fileName) {
+            this.fileName = fileName;
+        }
     }
 }

components/device-types/raspberrypi-plugin/org.wso2.carbon.device.mgt.iot.raspberrypi.api/src/main/java/org/wso2/carbon/device/mgt/iot/raspberrypi/service/impl/RaspberryPiServiceImpl.java

@@ -144,12 +144,11 @@ public class RaspberryPiServiceImpl implements RaspberryPiService {
             String username = APIUtil.getAuthenticatedUser() + "@" + PrivilegedCarbonContext
                     .getThreadLocalCarbonContext().getTenantDomain();
             ZipArchive zipFile = createDownloadFile(username, deviceName, sketchType);
-            Response.ResponseBuilder response = Response.ok(FileUtils.readFileToByteArray(zipFile.getZipFile()));
+            Response.ResponseBuilder response = Response.ok(zipFile.getZipFileContent());
             response.status(Response.Status.OK);
             response.type("application/zip");
             response.header("Content-Disposition", "attachment; filename=\"" + zipFile.getFileName() + "\"");
             Response resp = response.build();
-            zipFile.getZipFile().delete();
             return resp;
         } catch (IllegalArgumentException ex) {
             return Response.status(400).entity(ex.getMessage()).build();//bad request
@@ -162,9 +161,6 @@ public class RaspberryPiServiceImpl implements RaspberryPiService {
         } catch (APIManagerException ex) {
             log.error(ex.getMessage(), ex);
             return Response.status(500).entity(ex.getMessage()).build();
-        } catch (IOException ex) {
-            log.error(ex.getMessage(), ex);
-            return Response.status(500).entity(ex.getMessage()).build();
         } catch (UserStoreException ex) {
             log.error(ex.getMessage(), ex);
             return Response.status(500).entity(ex.getMessage()).build();

components/device-types/raspberrypi-plugin/org.wso2.carbon.device.mgt.iot.raspberrypi.api/src/main/java/org/wso2/carbon/device/mgt/iot/raspberrypi/service/impl/util/ZipArchive.java

@@ -18,23 +18,21 @@
 
 package org.wso2.carbon.device.mgt.iot.raspberrypi.service.impl.util;
 
-import java.io.File;
-
 /**
  * This is an utility class to hold zip files.
  */
 public class ZipArchive {
 
-    private File zipFile = null;
+    private byte[] zipFileContent = null;
     private String fileName = null;
 
-    public ZipArchive(String fileName, File zipFile) {
+    public ZipArchive(String fileName, byte[] zipFile) {
         this.fileName = fileName;
-        this.zipFile = zipFile;
+        this.zipFileContent = zipFile;
     }
 
-    public File getZipFile() {
-        return zipFile;
+    public byte[] getZipFileContent() {
+        return zipFileContent;
     }
 
     public String getFileName() {

components/device-types/raspberrypi-plugin/org.wso2.carbon.device.mgt.iot.raspberrypi.api/src/main/java/org/wso2/carbon/device/mgt/iot/raspberrypi/service/impl/util/ZipUtil.java

@@ -18,27 +18,22 @@
 
 package org.wso2.carbon.device.mgt.iot.raspberrypi.service.impl.util;
 
-import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-import org.wso2.carbon.base.ServerConfiguration;
 import org.wso2.carbon.core.util.Utils;
 import org.wso2.carbon.device.mgt.common.DeviceManagementException;
 import org.wso2.carbon.device.mgt.common.configuration.mgt.ConfigurationEntry;
 import org.wso2.carbon.device.mgt.common.configuration.mgt.ConfigurationManagementException;
 import org.wso2.carbon.device.mgt.common.configuration.mgt.PlatformConfiguration;
 import org.wso2.carbon.utils.CarbonUtils;
-import org.wso2.carbon.utils.NetworkUtils;
 
-import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
+import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.OutputStream;
 import java.net.SocketException;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
@@ -69,8 +64,6 @@ public class ZipUtil {
                                     String refreshToken) throws DeviceManagementException {
 
         String sketchFolder = "repository" + File.separator + "resources" + File.separator + "sketches";
-        String archivesPath = CarbonUtils.getCarbonHome() + File.separator + sketchFolder + File.separator + "archives" +
-                        File.separator + deviceId;
         String templateSketchPath = sketchFolder + File.separator + deviceType;
         String iotServerIP;
 
@@ -117,7 +110,7 @@ public class ZipUtil {
             contextParams.put("DEVICE_REFRESH_TOKEN", refreshToken);
 
             ZipArchive zipFile;
-            zipFile = getSketchArchive(archivesPath, templateSketchPath, contextParams, deviceName);
+            zipFile = getSketchArchive(templateSketchPath, contextParams, deviceName);
             return zipFile;
         } catch (IOException e) {
             throw new DeviceManagementException("Zip File Creation Failed", e);
@@ -126,7 +119,7 @@ public class ZipUtil {
         }
     }
 
-    public static String getServerUrl() {
+    private static String getServerUrl() {
         try {
             return org.apache.axis2.util.Utils.getIpAddress();
         } catch (SocketException e) {
@@ -135,32 +128,26 @@ public class ZipUtil {
         }
     }
 
-    private static ZipArchive getSketchArchive(String archivesPath, String templateSketchPath, Map contextParams
+    private ZipArchive getSketchArchive(String templateSketchPath, Map contextParams
             , String zipFileName)
             throws DeviceManagementException, IOException {
         String sketchPath = CarbonUtils.getCarbonHome() + File.separator + templateSketchPath;
-        FileUtils.deleteDirectory(new File(archivesPath));//clear directory
-        FileUtils.deleteDirectory(new File(archivesPath + ".zip"));//clear zip
-        if (!new File(archivesPath).mkdirs()) { //new dir
-            String message = "Could not create directory at path: " + archivesPath;
-            log.error(message);
-            throw new DeviceManagementException(message);
-        }
         zipFileName = zipFileName + ".zip";
         try {
             Map<String, List<String>> properties = getProperties(sketchPath + File.separator + "sketch" + ".properties");
             List<String> templateFiles = properties.get("templates");
+            List<TemplateFile> processTemplateFiles = new ArrayList<>();
 
             for (String templateFile : templateFiles) {
-                parseTemplate(templateSketchPath + File.separator + templateFile, archivesPath + File.separator + templateFile,
-                              contextParams);
+                TemplateFile tFile = new TemplateFile();
+                tFile.setContent(parseTemplate(templateSketchPath + File.separator + templateFile, contextParams));
+                tFile.setFileName(templateFile);
+                processTemplateFiles.add(tFile);
             }
 
             templateFiles.add("sketch.properties");         // ommit copying the props file
-            copyFolder(new File(sketchPath), new File(archivesPath), templateFiles);
-            createZipArchive(archivesPath);
-            FileUtils.deleteDirectory(new File(archivesPath));
-            File zip = new File(archivesPath + ".zip");
+
+            byte[] zip =  createZipArchive(templateSketchPath, processTemplateFiles);
             return new ZipArchive(zipFileName, zip);
         } catch (IOException ex) {
             throw new DeviceManagementException(
@@ -200,148 +187,124 @@ public class ZipUtil {
         }
     }
 
-    private static void parseTemplate(String srcFile, String dstFile, Map contextParams) throws IOException {
+    private static String parseTemplate(String srcFile, Map contextParams) throws IOException {
         //read from file
         FileInputStream inputStream = null;
-        FileOutputStream outputStream = null;
         try {
             inputStream = new FileInputStream(srcFile);
-            outputStream = new FileOutputStream(dstFile);
             String content = IOUtils.toString(inputStream, StandardCharsets.UTF_8.toString());
             Iterator iterator = contextParams.entrySet().iterator();
             while (iterator.hasNext()) {
                 Map.Entry mapEntry = (Map.Entry) iterator.next();
                 content = content.replaceAll("\\$\\{" + mapEntry.getKey() + "\\}", mapEntry.getValue().toString());
             }
-            IOUtils.write(content, outputStream, StandardCharsets.UTF_8.toString());
+            return content;
         } finally {
             if (inputStream != null) {
                 inputStream.close();
             }
-            if (outputStream != null) {
-                outputStream.close();
-            }
-        }
-    }
-
-    private static void copyFolder(File src, File dest, List<String> excludeFileNames) throws IOException {
-
-        if (src.isDirectory()) {
-            //if directory not exists, create it
-            if (!dest.exists() && !dest.mkdirs()) {
-                String message = "Could not create directory at path: " + dest;
-                log.error(message);
-                throw new IOException(message);
-            }
-            //list all the directory contents
-            String files[] = src.list();
-
-            if (files == null) {
-                log.warn("There are no files insides the directory " + src.getAbsolutePath());
-                return;
-            }
-
-            for (String file : files) {
-                //construct the src and dest file structure
-                File srcFile = new File(src, file);
-                File destFile = new File(dest, file);
-                //recursive copy
-                copyFolder(srcFile, destFile, excludeFileNames);
-            }
-
-        } else {
-            for (String fileName : excludeFileNames) {
-                if (src.getName().equals(fileName)) {
-                    return;
-                }
-            }
-            //if file, then copy it
-            //Use bytes stream to support all file types
-            InputStream in = null;
-            OutputStream out = null;
-
-            try {
-                in = new FileInputStream(src);
-                out = new FileOutputStream(dest);
-
-                byte[] buffer = new byte[1024];
-
-                int length;
-                //copy the file content in bytes
-                while ((length = in.read(buffer)) > 0) {
-                    out.write(buffer, 0, length);
-                }
-            } finally {
-                if (in != null) {
-                    in.close();
-                }
-                if (out != null) {
-                    out.close();
-                }
-            }
         }
     }
 
-    private static boolean createZipArchive(String srcFolder) throws IOException {
-        BufferedInputStream origin = null;
+    private static byte[] createZipArchive(String srcFolder, List<TemplateFile> processTemplateFiles) throws IOException {
         ZipOutputStream out = null;
-
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
         try {
-            final int BUFFER = 2048;
-            FileOutputStream dest = new FileOutputStream(new File(srcFolder + ".zip"));
-            out = new ZipOutputStream(new BufferedOutputStream(dest));
-            byte data[] = new byte[BUFFER];
+            out = new ZipOutputStream(new BufferedOutputStream(baos));
             File subDir = new File(srcFolder);
             String subdirList[] = subDir.list();
             if (subdirList == null) {
                 log.warn("The sub directory " + subDir.getAbsolutePath() + " is empty");
-                return false;
+                return null;
             }
             for (String sd : subdirList) {
                 // get a list of files from current directory
-                File f = new File(srcFolder + "/" + sd);
+                File f = new File(srcFolder + File.separator + sd);
                 if (f.isDirectory()) {
                     String files[] = f.list();
 
                     if (files == null) {
                         log.warn("The current directory " + f.getAbsolutePath() + " is empty. Has no files");
-                        return false;
+                        return null;
                     }
 
                     for (int i = 0; i < files.length; i++) {
-                        FileInputStream fi = new FileInputStream(srcFolder + "/" + sd + "/" + files[i]);
-                        origin = new BufferedInputStream(fi, BUFFER);
-                        ZipEntry entry = new ZipEntry(sd + "/" + files[i]);
+                        boolean fileAdded = false;
+                        for (TemplateFile templateFile : processTemplateFiles) {
+                            if (files[i].equals(templateFile.getFileName())) {
+                                ZipEntry entry = new ZipEntry(templateFile.getFileName());
                                 out.putNextEntry(entry);
-                        int count;
-                        while ((count = origin.read(data, 0, BUFFER)) != -1) {
-                            out.write(data, 0, count);
-                            out.flush();
+                                out.write(templateFile.getContent().getBytes());
+                                out.closeEntry();
+                                fileAdded = true;
+                                break;
+                            } else if (f.getName().equals("sketch.properties")) {
+                                fileAdded = true;
+                                break;
                             }
+                        }
+                        if (fileAdded) {
+                            continue;
+                        }
+                        ZipEntry entry = new ZipEntry(sd + File.separator + files[i]);
+                        out.putNextEntry(entry);
+                        out.write(IOUtils.toByteArray(new FileInputStream(srcFolder + File.separator + sd
+                                                                                  + File.separator + files[i])));
+                        out.closeEntry();
 
                     }
                 } else //it is just a file
                 {
-                    FileInputStream fi = new FileInputStream(f);
-                    origin = new BufferedInputStream(fi, BUFFER);
-                    ZipEntry entry = new ZipEntry(sd);
+                    boolean fileAdded = false;
+                    for (TemplateFile templateFile : processTemplateFiles) {
+                        if (f.getName().equals(templateFile.getFileName())) {
+                            ZipEntry entry = new ZipEntry(templateFile.getFileName());
                             out.putNextEntry(entry);
-                    int count;
-                    while ((count = origin.read(data, 0, BUFFER)) != -1) {
-                        out.write(data, 0, count);
-                        out.flush();
+                            out.write(templateFile.getContent().getBytes());
+                            out.closeEntry();
+                            fileAdded = true;
+                            break;
+                        } else if (f.getName().equals("sketch.properties")) {
+                            fileAdded = true;
+                            break;
                         }
                     }
+                    if (fileAdded) {
+                        continue;
                     }
-            out.flush();
-        } finally {
-            if (origin != null) {
-                origin.close();
+                    ZipEntry entry = new ZipEntry(sd);
+                    out.putNextEntry(entry);
+                    out.write(IOUtils.toByteArray(new FileInputStream(f)));
+                    out.closeEntry();
                 }
+            }
+            out.finish();
+        } finally {
             if (out != null) {
                 out.close();
             }
         }
-        return true;
+        return baos.toByteArray();
+    }
+
+    public class TemplateFile {
+        private String content;
+        private String fileName;
+
+        public String getContent() {
+            return content;
+        }
+
+        public void setContent(String content) {
+            this.content = content;
+        }
+
+        public String getFileName() {
+            return fileName;
+        }
+
+        public void setFileName(String fileName) {
+            this.fileName = fileName;
+        }
     }
 }

components/device-types/virtual-fire-alarm-plugin/org.wso2.carbon.device.mgt.iot.virtualfirealarm.api/pom.xml

@@ -51,18 +51,6 @@
 			</exclusions>
 		</dependency>
 
-		<dependency>
-			<groupId>org.wso2.carbon.devicemgt</groupId>
-			<artifactId>org.wso2.carbon.device.mgt.analytics.data.publisher</artifactId>
-			<scope>provided</scope>
-			<exclusions>
-				<exclusion>
-					<groupId>org.apache.axis2.wso2</groupId>
-					<artifactId>axis2-client</artifactId>
-				</exclusion>
-			</exclusions>
-		</dependency>
-
 		<dependency>
 			<groupId>org.wso2.carbon.devicemgt</groupId>
 			<artifactId>org.wso2.carbon.certificate.mgt.core</artifactId>

components/device-types/virtual-fire-alarm-plugin/org.wso2.carbon.device.mgt.iot.virtualfirealarm.api/src/main/java/org/wso2/carbon/device/mgt/iot/virtualfirealarm/service/impl/VirtualFireAlarmServiceImpl.java

@@ -58,15 +58,11 @@ import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
 import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.Response;
-import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
-import java.security.PrivateKey;
 import java.util.ArrayList;
 import java.util.Date;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 import java.util.Properties;
 import java.util.UUID;
 
@@ -175,12 +171,11 @@ public class VirtualFireAlarmServiceImpl implements VirtualFireAlarmService {
             String user = APIUtil.getAuthenticatedUser() + "@" + PrivilegedCarbonContext.getThreadLocalCarbonContext()
                     .getTenantDomain();
             ZipArchive zipFile = createDownloadFile(user, deviceName, sketchType);
-            Response.ResponseBuilder response = Response.ok(FileUtils.readFileToByteArray(zipFile.getZipFile()));
+            Response.ResponseBuilder response = Response.ok(zipFile.getZipFileContent());
             response.status(Response.Status.OK);
             response.type("application/zip");
             response.header("Content-Disposition", "attachment; filename=\"" + zipFile.getFileName() + "\"");
             Response resp = response.build();
-            zipFile.getZipFile().delete();
             return resp;
         } catch (IllegalArgumentException ex) {
             return Response.status(400).entity(ex.getMessage()).build();//bad request
@@ -193,9 +188,6 @@ public class VirtualFireAlarmServiceImpl implements VirtualFireAlarmService {
         } catch (APIManagerException ex) {
             log.error(ex.getMessage(), ex);
             return Response.status(500).entity(ex.getMessage()).build();
-        } catch (IOException ex) {
-            log.error(ex.getMessage(), ex);
-            return Response.status(500).entity(ex.getMessage()).build();
         } catch (UserStoreException ex) {
             log.error(ex.getMessage(), ex);
             return Response.status(500).entity(ex.getMessage()).build();

components/device-types/virtual-fire-alarm-plugin/org.wso2.carbon.device.mgt.iot.virtualfirealarm.api/src/main/java/org/wso2/carbon/device/mgt/iot/virtualfirealarm/service/impl/util/ZipArchive.java

@@ -18,23 +18,23 @@
 
 package org.wso2.carbon.device.mgt.iot.virtualfirealarm.service.impl.util;
 
-import java.io.File;
+import java.util.zip.ZipOutputStream;
 
 /**
  * This is an utility class to hold zip files.
  */
 public class ZipArchive {
 
-    private File zipFile = null;
+    private byte[] zipFileContent = null;
     private String fileName = null;
 
-    public ZipArchive(String fileName, File zipFile) {
+    public ZipArchive(String fileName, byte[] zipFile) {
         this.fileName = fileName;
-        this.zipFile = zipFile;
+        this.zipFileContent = zipFile;
     }
 
-    public File getZipFile() {
-        return zipFile;
+    public byte[] getZipFileContent() {
+        return zipFileContent;
     }
 
     public String getFileName() {

components/device-types/virtual-fire-alarm-plugin/org.wso2.carbon.device.mgt.iot.virtualfirealarm.api/src/main/java/org/wso2/carbon/device/mgt/iot/virtualfirealarm/service/impl/util/ZipUtil.java

@@ -19,7 +19,6 @@
 package org.wso2.carbon.device.mgt.iot.virtualfirealarm.service.impl.util;
 
 import org.apache.commons.codec.binary.Base64;
-import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -33,14 +32,12 @@ import org.wso2.carbon.device.mgt.common.configuration.mgt.PlatformConfiguration
 import org.wso2.carbon.device.mgt.iot.virtualfirealarm.service.impl.xmpp.XmppConfig;
 import org.wso2.carbon.utils.CarbonUtils;
 
-import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
+import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.OutputStream;
 import java.net.SocketException;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
@@ -59,24 +56,18 @@ import java.util.zip.ZipOutputStream;
 public class ZipUtil {
 
     private static final Log log = LogFactory.getLog(ZipUtil.class);
-    private static final String HTTPS_PORT_PROPERTY = "httpsPort";
-    private static final String HTTP_PORT_PROPERTY = "httpPort";
 
     private static final String LOCALHOST = "localhost";
     private static final String HTTPS_PROTOCOL_URL = "https://${iot.gateway.host}:${iot.gateway.https.port}";
     private static final String HTTP_PROTOCOL_URL = "http://${iot.gateway.host}:${iot.gateway.http.port}";
     private static final String CONFIG_TYPE = "general";
     private static final String DEFAULT_MQTT_ENDPOINT = "tcp://${mqtt.broker.host}:${mqtt.broker.port}";
-    public static final String HOST_NAME = "HostName";
 
     public ZipArchive createZipFile(String owner, String deviceType, String deviceId, String deviceName,
                                     String apiApplicationKey, String token, String refreshToken)
             throws DeviceManagementException {
 
         String sketchFolder = "repository" + File.separator + "resources" + File.separator + "sketches";
-        String archivesPath =
-                CarbonUtils.getCarbonHome() + File.separator + sketchFolder + File.separator + "archives" +
-                        File.separator + deviceId;
         String templateSketchPath = sketchFolder + File.separator + deviceType;
         String iotServerIP;
 
@@ -141,7 +132,7 @@ public class ZipUtil {
                     ? "" : XmppConfig.getInstance().getJid());
 
             ZipArchive zipFile;
-            zipFile = getSketchArchive(archivesPath, templateSketchPath, contextParams, deviceName);
+            zipFile = getSketchArchive(templateSketchPath, contextParams, deviceName);
             return zipFile;
         } catch (IOException e) {
             throw new DeviceManagementException("Zip File Creation Failed", e);
@@ -159,7 +150,7 @@ public class ZipUtil {
         return Base64.encodeBase64String(stringToEncode.getBytes());
     }
 
-    public static String getServerUrl() {
+    private static String getServerUrl() {
         try {
             return org.apache.axis2.util.Utils.getIpAddress();
         } catch (SocketException e) {
@@ -168,33 +159,27 @@ public class ZipUtil {
         }
     }
 
-    public static ZipArchive getSketchArchive(String archivesPath, String templateSketchPath, Map contextParams
+    private ZipArchive getSketchArchive(String templateSketchPath, Map contextParams
             , String zipFileName)
             throws DeviceManagementException, IOException {
         String sketchPath = CarbonUtils.getCarbonHome() + File.separator + templateSketchPath;
-        FileUtils.deleteDirectory(new File(archivesPath));//clear directory
-        FileUtils.deleteDirectory(new File(archivesPath + ".zip"));//clear zip
-        if (!new File(archivesPath).mkdirs()) { //new dir
-            String message = "Could not create directory at path: " + archivesPath;
-            log.error(message);
-            throw new DeviceManagementException(message);
-        }
         zipFileName = zipFileName + ".zip";
         try {
             Map<String, List<String>> properties = getProperties(sketchPath + File.separator + "sketch" + ".properties");
             List<String> templateFiles = properties.get("templates");
+            List<TemplateFile> processTemplateFiles = new ArrayList<>();
 
             for (String templateFile : templateFiles) {
-                parseTemplate(templateSketchPath + File.separator + templateFile, archivesPath + File.separator + templateFile,
-                              contextParams);
+                TemplateFile tFile = new TemplateFile();
+                tFile.setContent(parseTemplate(templateSketchPath + File.separator + templateFile, contextParams));
+                tFile.setFileName(templateFile);
+                processTemplateFiles.add(tFile);
             }
 
             templateFiles.add("sketch.properties");         // ommit copying the props file
-            copyFolder(new File(sketchPath), new File(archivesPath), templateFiles);
-            createZipArchive(archivesPath);
-            FileUtils.deleteDirectory(new File(archivesPath));
-            File zip = new File(archivesPath + ".zip");
-            return new org.wso2.carbon.device.mgt.iot.virtualfirealarm.service.impl.util.ZipArchive(zipFileName, zip);
+
+            byte[] zip =  createZipArchive(templateSketchPath, processTemplateFiles);
+            return new ZipArchive(zipFileName, zip);
         } catch (IOException ex) {
             throw new DeviceManagementException(
                     "Error occurred when trying to read property " + "file sketch.properties", ex);
@@ -206,9 +191,7 @@ public class ZipUtil {
         InputStream input = null;
 
         try {
-
             input = new FileInputStream(propertyFilePath);
-
             // load a properties file
             prop.load(input);
             Map<String, List<String>> properties = new HashMap<String, List<String>>();
@@ -235,148 +218,124 @@ public class ZipUtil {
         }
     }
 
-    private static void parseTemplate(String srcFile, String dstFile, Map contextParams) throws IOException {
+    private static String parseTemplate(String srcFile, Map contextParams) throws IOException {
         //read from file
         FileInputStream inputStream = null;
-        FileOutputStream outputStream = null;
         try {
             inputStream = new FileInputStream(srcFile);
-            outputStream = new FileOutputStream(dstFile);
             String content = IOUtils.toString(inputStream, StandardCharsets.UTF_8.toString());
             Iterator iterator = contextParams.entrySet().iterator();
             while (iterator.hasNext()) {
                 Map.Entry mapEntry = (Map.Entry) iterator.next();
                 content = content.replaceAll("\\$\\{" + mapEntry.getKey() + "\\}", mapEntry.getValue().toString());
             }
-            IOUtils.write(content, outputStream, StandardCharsets.UTF_8.toString());
+            return content;
         } finally {
             if (inputStream != null) {
                 inputStream.close();
             }
-            if (outputStream != null) {
-                outputStream.close();
-            }
-        }
-    }
-
-    private static void copyFolder(File src, File dest, List<String> excludeFileNames) throws IOException {
-
-        if (src.isDirectory()) {
-            //if directory not exists, create it
-            if (!dest.exists() && !dest.mkdirs()) {
-                String message = "Could not create directory at path: " + dest;
-                log.error(message);
-                throw new IOException(message);
         }
-            //list all the directory contents
-            String files[] = src.list();
-
-            if (files == null) {
-                log.warn("There are no files insides the directory " + src.getAbsolutePath());
-                return;
     }
 
-            for (String file : files) {
-                //construct the src and dest file structure
-                File srcFile = new File(src, file);
-                File destFile = new File(dest, file);
-                //recursive copy
-                copyFolder(srcFile, destFile, excludeFileNames);
-            }
-
-        } else {
-            for (String fileName : excludeFileNames) {
-                if (src.getName().equals(fileName)) {
-                    return;
-                }
-            }
-            //if file, then copy it
-            //Use bytes stream to support all file types
-            InputStream in = null;
-            OutputStream out = null;
-
-            try {
-                in = new FileInputStream(src);
-                out = new FileOutputStream(dest);
-
-                byte[] buffer = new byte[1024];
-
-                int length;
-                //copy the file content in bytes
-                while ((length = in.read(buffer)) > 0) {
-                    out.write(buffer, 0, length);
-                }
-            } finally {
-                if (in != null) {
-                    in.close();
-                }
-                if (out != null) {
-                    out.close();
-                }
-            }
-        }
-    }
-
-    private static boolean createZipArchive(String srcFolder) throws IOException {
-        BufferedInputStream origin = null;
+    private static byte[] createZipArchive(String srcFolder, List<TemplateFile> processTemplateFiles) throws IOException {
         ZipOutputStream out = null;
-
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
         try {
-            final int BUFFER = 2048;
-            FileOutputStream dest = new FileOutputStream(new File(srcFolder + ".zip"));
-            out = new ZipOutputStream(new BufferedOutputStream(dest));
-            byte data[] = new byte[BUFFER];
+            out = new ZipOutputStream(new BufferedOutputStream(baos));
             File subDir = new File(srcFolder);
             String subdirList[] = subDir.list();
             if (subdirList == null) {
                 log.warn("The sub directory " + subDir.getAbsolutePath() + " is empty");
-                return false;
+                return null;
             }
             for (String sd : subdirList) {
                 // get a list of files from current directory
-                File f = new File(srcFolder + "/" + sd);
+                File f = new File(srcFolder + File.separator + sd);
                 if (f.isDirectory()) {
                     String files[] = f.list();
 
                     if (files == null) {
                         log.warn("The current directory " + f.getAbsolutePath() + " is empty. Has no files");
-                        return false;
+                        return null;
                     }
 
                     for (int i = 0; i < files.length; i++) {
-                        FileInputStream fi = new FileInputStream(srcFolder + "/" + sd + "/" + files[i]);
-                        origin = new BufferedInputStream(fi, BUFFER);
-                        ZipEntry entry = new ZipEntry(sd + "/" + files[i]);
+                        boolean fileAdded = false;
+                        for (TemplateFile templateFile : processTemplateFiles) {
+                            if (files[i].equals(templateFile.getFileName())) {
+                                ZipEntry entry = new ZipEntry(templateFile.getFileName());
                                 out.putNextEntry(entry);
-                        int count;
-                        while ((count = origin.read(data, 0, BUFFER)) != -1) {
-                            out.write(data, 0, count);
-                            out.flush();
+                                out.write(templateFile.getContent().getBytes());
+                                out.closeEntry();
+                                fileAdded = true;
+                                break;
+                            } else if (f.getName().equals("sketch.properties")) {
+                                fileAdded = true;
+                                break;
+                            }
+                        }
+                        if (fileAdded) {
+                            continue;
                         }
+                        ZipEntry entry = new ZipEntry(sd + File.separator + files[i]);
+                        out.putNextEntry(entry);
+                        out.write(IOUtils.toByteArray(new FileInputStream(srcFolder + File.separator + sd
+                                                                                  + File.separator + files[i])));
+                        out.closeEntry();
 
                     }
                 } else //it is just a file
                 {
-                    FileInputStream fi = new FileInputStream(f);
-                    origin = new BufferedInputStream(fi, BUFFER);
-                    ZipEntry entry = new ZipEntry(sd);
+                    boolean fileAdded = false;
+                    for (TemplateFile templateFile : processTemplateFiles) {
+                        if (f.getName().equals(templateFile.getFileName())) {
+                            ZipEntry entry = new ZipEntry(templateFile.getFileName());
                             out.putNextEntry(entry);
-                    int count;
-                    while ((count = origin.read(data, 0, BUFFER)) != -1) {
-                        out.write(data, 0, count);
-                        out.flush();
+                            out.write(templateFile.getContent().getBytes());
+                            out.closeEntry();
+                            fileAdded = true;
+                            break;
+                        } else if (f.getName().equals("sketch.properties")) {
+                            fileAdded = true;
+                            break;
                         }
                     }
+                    if (fileAdded) {
+                        continue;
+                    }
+                    ZipEntry entry = new ZipEntry(sd);
+                    out.putNextEntry(entry);
+                    out.write(IOUtils.toByteArray(new FileInputStream(f)));
+                    out.closeEntry();
                 }
-            out.flush();
-        } finally {
-            if (origin != null) {
-                origin.close();
             }
+            out.finish();
+        } finally {
             if (out != null) {
                 out.close();
             }
         }
-        return true;
+        return baos.toByteArray();
+    }
+
+    public class TemplateFile {
+        private String content;
+        private String fileName;
+
+        public String getContent() {
+            return content;
+        }
+
+        public void setContent(String content) {
+            this.content = content;
+        }
+
+        public String getFileName() {
+            return fileName;
+        }
+
+        public void setFileName(String fileName) {
+            this.fileName = fileName;
+        }
     }
 }

components/device-types/virtual-fire-alarm-plugin/org.wso2.carbon.device.mgt.iot.virtualfirealarm.api/src/main/java/org/wso2/carbon/device/mgt/iot/virtualfirealarm/service/impl/util/util/Utils.java

@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2016, 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.mgt.iot.virtualfirealarm.service.impl.util.util;
-
-import org.apache.commons.io.FileUtils;
-import org.apache.commons.io.IOUtils;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-import org.wso2.carbon.base.ServerConfiguration;
-import org.wso2.carbon.device.mgt.common.DeviceManagementException;
-import org.wso2.carbon.device.mgt.iot.virtualfirealarm.service.impl.util.ZipArchive;
-import org.wso2.carbon.utils.CarbonUtils;
-import org.wso2.carbon.utils.NetworkUtils;
-
-import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.SocketException;
-import java.nio.charset.StandardCharsets;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-import java.util.Properties;
-import java.util.zip.ZipEntry;
-import java.util.zip.ZipOutputStream;
-
-/**
- * Provides utility methods required by the device type plugins.
- */
-public class Utils {
-
-    public static final String HOST_NAME = "HostName";
-    private static final Log log = LogFactory.getLog(Utils.class);
-
-
-
-}

components/extensions/appm-connector/org.wso2.carbon.appmgt.mdm.restconnector/src/main/java/org/wso2/carbon/appmgt/mdm/restconnector/ApplicationOperationsImpl.java

@@ -19,6 +19,9 @@ package org.wso2.carbon.appmgt.mdm.restconnector;
 
 import feign.Client;
 import feign.Feign;
+import feign.Logger;
+import feign.Request;
+import feign.Response;
 import feign.gson.GsonDecoder;
 import feign.gson.GsonEncoder;
 import feign.jaxrs.JAXRSContract;
@@ -51,6 +54,7 @@ import javax.net.ssl.SSLSession;
 import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
+import java.io.IOException;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
@@ -71,13 +75,13 @@ public class ApplicationOperationsImpl implements ApplicationOperations {
     public ApplicationOperationsImpl() {
         String authorizationConfigManagerServerURL = AuthorizationConfigurationManager.getInstance().getServerURL();
         OAuthRequestInterceptor oAuthRequestInterceptor = new OAuthRequestInterceptor();
-        deviceManagementAdminService = Feign.builder().client(getSSLClient())
-                .requestInterceptor(oAuthRequestInterceptor)
+        deviceManagementAdminService = Feign.builder().client(getSSLClient()).logger(getLogger()).logLevel(
+                Logger.Level.FULL).requestInterceptor(oAuthRequestInterceptor)
                 .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                 .target(DeviceManagementAdminService.class,
                         authorizationConfigManagerServerURL + CDMF_SERVER_BASE_CONTEXT);
-        applicationManagementAdminService = Feign.builder().client(getSSLClient())
-                .requestInterceptor(oAuthRequestInterceptor)
+        applicationManagementAdminService = Feign.builder().client(getSSLClient()).logger(getLogger()).logLevel(
+                Logger.Level.FULL).requestInterceptor(oAuthRequestInterceptor)
                 .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                 .target(ApplicationManagementAdminService.class,
                         authorizationConfigManagerServerURL + CDMF_SERVER_BASE_CONTEXT);
@@ -311,6 +315,32 @@ public class ApplicationOperationsImpl implements ApplicationOperations {
         } catch (KeyManagementException | NoSuchAlgorithmException e) {
             return null;
         }
+    }
+
+    private static Logger getLogger() {
+        return new Logger() {
+            @Override
+            protected void log(String configKey, String format, Object... args) {
+                if (log.isDebugEnabled()) {
+                    log.debug(String.format(methodTag(configKey) + format, args));
+                }
+            }
+
+            @Override
+            protected void logRequest(String configKey, Level logLevel, Request request) {
+                if (log.isDebugEnabled()) {
+                    super.logRequest(configKey, logLevel, request);
+                }
+            }
 
+            @Override
+            protected Response logAndRebufferResponse(String configKey, Level logLevel, Response response,
+                                                      long elapsedTime) throws IOException {
+                if (log.isDebugEnabled()) {
+                    return super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
+                }
+                return response;
+            }
+        };
     }
 }

components/extensions/appm-connector/org.wso2.carbon.appmgt.mdm.restconnector/src/main/java/org/wso2/carbon/appmgt/mdm/restconnector/authorization/client/OAuthRequestInterceptor.java

@@ -19,12 +19,17 @@ package org.wso2.carbon.appmgt.mdm.restconnector.authorization.client;
 
 import feign.Client;
 import feign.Feign;
+import feign.Logger;
+import feign.Request;
 import feign.RequestInterceptor;
 import feign.RequestTemplate;
+import feign.Response;
 import feign.auth.BasicAuthRequestInterceptor;
 import feign.gson.GsonDecoder;
 import feign.gson.GsonEncoder;
 import feign.jaxrs.JAXRSContract;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.appmgt.mdm.restconnector.Constants;
 import org.wso2.carbon.appmgt.mdm.restconnector.authorization.client.dto.AccessTokenInfo;
 import org.wso2.carbon.appmgt.mdm.restconnector.authorization.client.dto.ApiApplicationKey;
@@ -40,6 +45,7 @@ import javax.net.ssl.SSLSession;
 import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
+import java.io.IOException;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 
@@ -56,6 +62,8 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private static final String REFRESH_GRANT_TYPE = "refresh_token";
     private ApiApplicationRegistrationService apiApplicationRegistrationService;
     private TokenIssuerService tokenIssuerService;
+    private static Log log = LogFactory.getLog(OAuthRequestInterceptor.class);
+
 
     /**
      * Creates an interceptor that authenticates all requests.
@@ -64,8 +72,8 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
         refreshTimeOffset = AuthorizationConfigurationManager.getInstance().getTokenRefreshTimeOffset();
         String username = AuthorizationConfigurationManager.getInstance().getUserName();
         String password = AuthorizationConfigurationManager.getInstance().getPassword();
-        apiApplicationRegistrationService = Feign.builder().client(getSSLClient()).requestInterceptor(
-                new BasicAuthRequestInterceptor(username, password))
+        apiApplicationRegistrationService = Feign.builder().client(getSSLClient()).logger(getLogger()).logLevel(
+                Logger.Level.FULL).requestInterceptor(new BasicAuthRequestInterceptor(username, password))
                 .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                 .target(ApiApplicationRegistrationService.class,
                         AuthorizationConfigurationManager.getInstance().getServerURL() +
@@ -92,8 +100,8 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
             String consumerSecret = apiApplicationKey.getConsumerSecret();
             String username = AuthorizationConfigurationManager.getInstance().getUserName();
             String password = AuthorizationConfigurationManager.getInstance().getPassword();
-            tokenIssuerService = Feign.builder().client(getSSLClient()).requestInterceptor(
-                    new BasicAuthRequestInterceptor(consumerKey, consumerSecret))
+            tokenIssuerService = Feign.builder().client(getSSLClient()).logger(getLogger()).logLevel(Logger.Level.FULL)
+                    .requestInterceptor(new BasicAuthRequestInterceptor(consumerKey, consumerSecret))
                     .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                     .target(TokenIssuerService.class, AuthorizationConfigurationManager.getInstance().getTokenApiURL());
             tokenInfo = tokenIssuerService.getToken(PASSWORD_GRANT_TYPE, username, password);
@@ -139,6 +147,33 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
         } catch (KeyManagementException | NoSuchAlgorithmException e) {
             return null;
         }
+    }
+
+    private static Logger getLogger() {
+        return new Logger() {
+            @Override
+            protected void log(String configKey, String format, Object... args) {
+                if (log.isDebugEnabled()) {
+                    log.debug(String.format(methodTag(configKey) + format, args));
+                }
+            }
 
+            @Override
+            protected void logRequest(String configKey, Level logLevel, Request request) {
+                if (log.isDebugEnabled()) {
+                    super.logRequest(configKey, logLevel, request);
+                }
             }
+
+            @Override
+            protected Response logAndRebufferResponse(String configKey, Level logLevel, Response response,
+                                                      long elapsedTime) throws IOException {
+                if (log.isDebugEnabled()) {
+                    return super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
+                }
+                return response;
+            }
+        };
+    }
+
 }

components/extensions/cdmf-transport-adapters/input/org.wso2.carbon.device.mgt.input.adapter.http/src/main/java/org/wso2/carbon/device/mgt/input/adapter/http/authorization/DeviceAuthorizer.java

@@ -20,6 +20,9 @@ package org.wso2.carbon.device.mgt.input.adapter.http.authorization;
 import feign.Client;
 import feign.Feign;
 import feign.FeignException;
+import feign.Logger;
+import feign.Request;
+import feign.Response;
 import feign.gson.GsonDecoder;
 import feign.gson.GsonEncoder;
 import feign.jaxrs.JAXRSContract;
@@ -40,10 +43,10 @@ import javax.net.ssl.SSLSession;
 import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
+import java.io.IOException;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 
@@ -55,17 +58,17 @@ public class DeviceAuthorizer {
     private static DeviceAccessAuthorizationAdminService deviceAccessAuthorizationAdminService;
     private static final String CDMF_SERVER_BASE_CONTEXT = "/api/device-mgt/v1.0";
     private static final String DEVICE_MGT_SERVER_URL = "deviceMgtServerUrl";
-    private static Log logger = LogFactory.getLog(DeviceAuthorizer.class);
+    private static Log log = LogFactory.getLog(DeviceAuthorizer.class);
 
     public DeviceAuthorizer(Map<String, String> globalProperties) {
         try {
-            deviceAccessAuthorizationAdminService = Feign.builder().client(getSSLClient())
-                    .requestInterceptor(new OAuthRequestInterceptor(globalProperties))
+            deviceAccessAuthorizationAdminService = Feign.builder().client(getSSLClient()).logger(getLogger())
+                    .logLevel(Logger.Level.FULL).requestInterceptor(new OAuthRequestInterceptor(globalProperties))
                     .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                     .target(DeviceAccessAuthorizationAdminService.class, getDeviceMgtServerUrl(globalProperties)
                             + CDMF_SERVER_BASE_CONTEXT);
         } catch (InputEventAdapterException e) {
-            logger.error("Invalid value for deviceMgtServerUrl in globalProperties.");
+            log.error("Invalid value for deviceMgtServerUrl in globalProperties.");
         }
     }
 
@@ -94,7 +97,7 @@ public class DeviceAuthorizer {
                     }
                 }
             } catch (FeignException e) {
-                logger.error(e.getMessage(), e);
+                log.error(e.getMessage(), e);
             }
         }
         return false;
@@ -103,7 +106,7 @@ public class DeviceAuthorizer {
     private String getDeviceMgtServerUrl(Map<String, String> properties) throws InputEventAdapterException {
         String deviceMgtServerUrl = PropertyUtils.replaceProperty(properties.get(DEVICE_MGT_SERVER_URL));
         if (deviceMgtServerUrl == null || deviceMgtServerUrl.isEmpty()) {
-            logger.error("deviceMgtServerUrl can't be empty ");
+            log.error("deviceMgtServerUrl can't be empty ");
         }
         return deviceMgtServerUrl;
     }
@@ -138,6 +141,33 @@ public class DeviceAuthorizer {
         } catch (KeyManagementException | NoSuchAlgorithmException e) {
             return null;
         }
+    }
+
+    private static Logger getLogger() {
+        return new Logger() {
+            @Override
+            protected void log(String configKey, String format, Object... args) {
+                if (log.isDebugEnabled()) {
+                    log.debug(String.format(methodTag(configKey) + format, args));
+                }
+            }
+
+            @Override
+            protected void logRequest(String configKey, Level logLevel, Request request) {
+                if (log.isDebugEnabled()) {
+                    super.logRequest(configKey, logLevel, request);
+                }
+            }
 
+            @Override
+            protected Response logAndRebufferResponse(String configKey, Level logLevel, Response response,
+                                                      long elapsedTime) throws IOException {
+                if (log.isDebugEnabled()) {
+                    return super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
+                }
+                return response;
             }
+        };
+    }
+
 }

components/extensions/cdmf-transport-adapters/input/org.wso2.carbon.device.mgt.input.adapter.http/src/main/java/org/wso2/carbon/device/mgt/input/adapter/http/authorization/client/OAuthRequestInterceptor.java

@@ -16,8 +16,11 @@ package org.wso2.carbon.device.mgt.input.adapter.http.authorization.client;
 
 import feign.Client;
 import feign.Feign;
+import feign.Logger;
+import feign.Request;
 import feign.RequestInterceptor;
 import feign.RequestTemplate;
+import feign.Response;
 import feign.auth.BasicAuthRequestInterceptor;
 import feign.gson.GsonDecoder;
 import feign.gson.GsonEncoder;
@@ -38,6 +41,7 @@ import javax.net.ssl.SSLSession;
 import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
+import java.io.IOException;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 import java.util.Map;
@@ -58,7 +62,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private ApiApplicationRegistrationService apiApplicationRegistrationService;
     private TokenIssuerService tokenIssuerService;
 
-    private static Log logger = LogFactory.getLog(OAuthRequestInterceptor.class);
+    private static Log log = LogFactory.getLog(OAuthRequestInterceptor.class);
 
     private static final String CONNECTION_USERNAME = "username";
     private static final String CONNECTION_PASSWORD = "password";
@@ -85,13 +89,13 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
             username = getUsername(globalProperties);
             password = getPassword(globalProperties);
             tokenEndpoint = getTokenEndpoint(globalProperties);
-            apiApplicationRegistrationService = Feign.builder().client(getSSLClient()).requestInterceptor(
-                    new BasicAuthRequestInterceptor(username, password))
+            apiApplicationRegistrationService = Feign.builder().client(getSSLClient()).logger(getLogger()).logLevel(
+                    Logger.Level.FULL).requestInterceptor(new BasicAuthRequestInterceptor(username, password))
                     .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                     .target(ApiApplicationRegistrationService.class,
                             deviceMgtServerUrl + API_APPLICATION_REGISTRATION_CONTEXT);
         } catch (InputEventAdapterException e) {
-            logger.error("Invalid url: deviceMgtServerUrl" + deviceMgtServerUrl + " or tokenEndpoint:" + tokenEndpoint,
+            log.error("Invalid url: deviceMgtServerUrl" + deviceMgtServerUrl + " or tokenEndpoint:" + tokenEndpoint,
                          e);
         }
     }
@@ -108,8 +112,8 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
             ApiApplicationKey apiApplicationKey = apiApplicationRegistrationService.register(apiRegistrationProfile);
             String consumerKey = apiApplicationKey.getConsumerKey();
             String consumerSecret = apiApplicationKey.getConsumerSecret();
-            tokenIssuerService = Feign.builder().client(getSSLClient()).requestInterceptor(
-                    new BasicAuthRequestInterceptor(consumerKey, consumerSecret))
+            tokenIssuerService = Feign.builder().client(getSSLClient()).logger(getLogger()).logLevel(Logger.Level.FULL)
+                    .requestInterceptor(new BasicAuthRequestInterceptor(consumerKey, consumerSecret))
                     .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                     .target(TokenIssuerService.class, tokenEndpoint);
             tokenInfo = tokenIssuerService.getToken(PASSWORD_GRANT_TYPE, username, password, REQUIRED_SCOPE);
@@ -128,7 +132,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private String getUsername(Map<String, String> globalProperties) {
         String username = globalProperties.get(CONNECTION_USERNAME);
         if (username == null || username.isEmpty()) {
-            logger.error("username can't be empty ");
+            log.error("username can't be empty ");
         }
         return username;
     }
@@ -136,7 +140,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private String getPassword(Map<String, String> globalProperties) {
         String password = globalProperties.get(CONNECTION_PASSWORD);;
         if (password == null || password.isEmpty()) {
-            logger.error("password can't be empty ");
+            log.error("password can't be empty ");
         }
         return password;
     }
@@ -144,7 +148,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private String getDeviceMgtServerUrl(Map<String, String> globalProperties) throws InputEventAdapterException {
         String deviceMgtServerUrl = globalProperties.get(DEVICE_MGT_SERVER_URL);
         if (deviceMgtServerUrl == null || deviceMgtServerUrl.isEmpty()) {
-            logger.error("deviceMgtServerUrl can't be empty ");
+            log.error("deviceMgtServerUrl can't be empty ");
         }
         return PropertyUtils.replaceProperty(deviceMgtServerUrl);
     }
@@ -152,7 +156,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private String getTokenEndpoint(Map<String, String> globalProperties) throws InputEventAdapterException {
         String tokenEndpoint = globalProperties.get(TOKEN_ENDPOINT_CONTEXT);
         if ( tokenEndpoint.isEmpty()) {
-            logger.error("tokenEndpoint can't be empty ");
+            log.error("tokenEndpoint can't be empty ");
         }
         return PropertyUtils.replaceProperty(tokenEndpoint);
     }
@@ -162,7 +166,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
         try {
             refreshTimeOffset = Long.parseLong(globalProperties.get(TOKEN_REFRESH_TIME_OFFSET));
         } catch (NumberFormatException e) {
-            logger.error("refreshTimeOffset should be a number", e);
+            log.error("refreshTimeOffset should be a number", e);
         }
         return refreshTimeOffset;
     }
@@ -197,7 +201,33 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
         } catch (KeyManagementException | NoSuchAlgorithmException e) {
             return null;
         }
+    }
 
+    private static Logger getLogger() {
+        return new Logger() {
+            @Override
+            protected void log(String configKey, String format, Object... args) {
+                if (log.isDebugEnabled()) {
+                    log.debug(String.format(methodTag(configKey) + format, args));
+                }
+            }
+
+            @Override
+            protected void logRequest(String configKey, Level logLevel, Request request) {
+                if (log.isDebugEnabled()) {
+                    super.logRequest(configKey, logLevel, request);
+                }
+            }
+
+            @Override
+            protected Response logAndRebufferResponse(String configKey, Level logLevel, Response response,
+                                                      long elapsedTime) throws IOException {
+                if (log.isDebugEnabled()) {
+                    return super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
+                }
+                return response;
+            }
+        };
     }
 
 }

components/extensions/cdmf-transport-adapters/output/org.wso2.carbon.device.mgt.output.adapter.websocket/src/main/java/org/wso2/carbon/device/mgt/output/adapter/websocket/authorization/DeviceAuthorizer.java

@@ -20,6 +20,9 @@ package org.wso2.carbon.device.mgt.output.adapter.websocket.authorization;
 import feign.Client;
 import feign.Feign;
 import feign.FeignException;
+import feign.Logger;
+import feign.Request;
+import feign.Response;
 import feign.gson.GsonDecoder;
 import feign.gson.GsonEncoder;
 import feign.jaxrs.JAXRSContract;
@@ -43,6 +46,7 @@ import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
 import javax.websocket.Session;
+import java.io.IOException;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
@@ -61,7 +65,7 @@ public class DeviceAuthorizer implements Authorizer {
     private static final String STAT_PERMISSION = "statsPermission";
     private static final String DEVICE_ID = "deviceId";
     private static final String DEVICE_TYPE = "deviceType";
-    private static Log logger = LogFactory.getLog(DeviceAuthorizer.class);
+    private static Log log = LogFactory.getLog(DeviceAuthorizer.class);
     private static List<String> statPermissions;
 
     public DeviceAuthorizer() {
@@ -76,13 +80,13 @@ public class DeviceAuthorizer implements Authorizer {
             }
         }
         try {
-            deviceAccessAuthorizationAdminService = Feign.builder().client(getSSLClient())
-                    .requestInterceptor(new OAuthRequestInterceptor(globalProperties))
+            deviceAccessAuthorizationAdminService = Feign.builder().client(getSSLClient()).logger(getLogger())
+                    .logLevel(Logger.Level.FULL).requestInterceptor(new OAuthRequestInterceptor(globalProperties))
                     .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                     .target(DeviceAccessAuthorizationAdminService.class, getDeviceMgtServerUrl(globalProperties)
                             + CDMF_SERVER_BASE_CONTEXT);
         } catch (OutputEventAdapterException e) {
-            logger.error("Invalid value for deviceMgtServerUrl in globalProperties.");
+            log.error("Invalid value for deviceMgtServerUrl in globalProperties.");
         }
     }
 
@@ -118,7 +122,7 @@ public class DeviceAuthorizer implements Authorizer {
                     }
                 }
             } catch (FeignException e) {
-                logger.error(e.getMessage(), e);
+                log.error(e.getMessage(), e);
             }
         }
         return false;
@@ -127,7 +131,7 @@ public class DeviceAuthorizer implements Authorizer {
     private String getDeviceMgtServerUrl(Map<String, String> properties) throws OutputEventAdapterException {
         String deviceMgtServerUrl = PropertyUtils.replaceProperty(properties.get(DEVICE_MGT_SERVER_URL));
         if (deviceMgtServerUrl == null || deviceMgtServerUrl.isEmpty()) {
-            logger.error("deviceMgtServerUrl can't be empty ");
+            log.error("deviceMgtServerUrl can't be empty ");
         }
         return deviceMgtServerUrl;
     }
@@ -170,6 +174,32 @@ public class DeviceAuthorizer implements Authorizer {
         } catch (KeyManagementException | NoSuchAlgorithmException e) {
             return null;
         }
+    }
 
+    private static Logger getLogger() {
+        return new Logger() {
+            @Override
+            protected void log(String configKey, String format, Object... args) {
+                if (log.isDebugEnabled()) {
+                    log.debug(String.format(methodTag(configKey) + format, args));
+                }
+            }
+
+            @Override
+            protected void logRequest(String configKey, Level logLevel, Request request) {
+                if (log.isDebugEnabled()) {
+                    super.logRequest(configKey, logLevel, request);
+                }
+            }
+
+            @Override
+            protected Response logAndRebufferResponse(String configKey, Level logLevel, Response response,
+                                                      long elapsedTime) throws IOException {
+                if (log.isDebugEnabled()) {
+                    return super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
+                }
+                return response;
+            }
+        };
     }
 }

components/extensions/cdmf-transport-adapters/output/org.wso2.carbon.device.mgt.output.adapter.websocket/src/main/java/org/wso2/carbon/device/mgt/output/adapter/websocket/authorization/client/OAuthRequestInterceptor.java

@@ -16,8 +16,11 @@ package org.wso2.carbon.device.mgt.output.adapter.websocket.authorization.client
 
 import feign.Client;
 import feign.Feign;
+import feign.Logger;
+import feign.Request;
 import feign.RequestInterceptor;
 import feign.RequestTemplate;
+import feign.Response;
 import feign.auth.BasicAuthRequestInterceptor;
 import feign.gson.GsonDecoder;
 import feign.gson.GsonEncoder;
@@ -38,6 +41,7 @@ import javax.net.ssl.SSLSession;
 import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
+import java.io.IOException;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 import java.util.Map;
@@ -58,7 +62,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private ApiApplicationRegistrationService apiApplicationRegistrationService;
     private TokenIssuerService tokenIssuerService;
 
-    private static Log logger = LogFactory.getLog(OAuthRequestInterceptor.class);
+    private static Log log = LogFactory.getLog(OAuthRequestInterceptor.class);
 
     private static final String CONNECTION_USERNAME = "username";
     private static final String CONNECTION_PASSWORD = "password";
@@ -86,13 +90,13 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
             username = getUsername(globalProperties);
             password = getPassword(globalProperties);
             tokenEndpoint = getTokenEndpoint(globalProperties);
-            apiApplicationRegistrationService = Feign.builder().client(getSSLClient()).requestInterceptor(
-                    new BasicAuthRequestInterceptor(username, password))
+            apiApplicationRegistrationService = Feign.builder().client(getSSLClient()).logger(getLogger())
+                    .logLevel(Logger.Level.FULL).requestInterceptor(new BasicAuthRequestInterceptor(username, password))
                     .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                     .target(ApiApplicationRegistrationService.class,
                             deviceMgtServerUrl + API_APPLICATION_REGISTRATION_CONTEXT);
         } catch (OutputEventAdapterException e) {
-            logger.error("Invalid url: deviceMgtServerUrl" + deviceMgtServerUrl + " or tokenEndpoint:" + tokenEndpoint,
+            log.error("Invalid url: deviceMgtServerUrl" + deviceMgtServerUrl + " or tokenEndpoint:" + tokenEndpoint,
                          e);
         }
     }
@@ -109,8 +113,8 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
             ApiApplicationKey apiApplicationKey = apiApplicationRegistrationService.register(apiRegistrationProfile);
             String consumerKey = apiApplicationKey.getConsumerKey();
             String consumerSecret = apiApplicationKey.getConsumerSecret();
-            tokenIssuerService = Feign.builder().client(getSSLClient()).requestInterceptor(
-                    new BasicAuthRequestInterceptor(consumerKey, consumerSecret))
+            tokenIssuerService = Feign.builder().client(getSSLClient()).logger(getLogger()).logLevel(Logger.Level.FULL)
+                    .requestInterceptor(new BasicAuthRequestInterceptor(consumerKey, consumerSecret))
                     .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                     .target(TokenIssuerService.class, tokenEndpoint);
             tokenInfo = tokenIssuerService.getToken(PASSWORD_GRANT_TYPE, username, password, REQUIRED_SCOPE);
@@ -129,7 +133,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private String getUsername(Map<String, String> globalProperties) {
         String username = globalProperties.get(CONNECTION_USERNAME);
         if (username == null || username.isEmpty()) {
-            logger.error("username can't be empty ");
+            log.error("username can't be empty ");
         }
         return username;
     }
@@ -137,7 +141,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private String getPassword(Map<String, String> globalProperties) {
         String password = globalProperties.get(CONNECTION_PASSWORD);;
         if (password == null || password.isEmpty()) {
-            logger.error("password can't be empty ");
+            log.error("password can't be empty ");
         }
         return password;
     }
@@ -145,7 +149,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private String getDeviceMgtServerUrl(Map<String, String> globalProperties) throws OutputEventAdapterException {
         String deviceMgtServerUrl = globalProperties.get(DEVICE_MGT_SERVER_URL);
         if (deviceMgtServerUrl == null || deviceMgtServerUrl.isEmpty()) {
-            logger.error("deviceMgtServerUrl can't be empty ");
+            log.error("deviceMgtServerUrl can't be empty ");
         }
         return PropertyUtils.replaceProperty(deviceMgtServerUrl);
     }
@@ -153,7 +157,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private String getTokenEndpoint(Map<String, String> globalProperties) throws OutputEventAdapterException {
         String tokenEndpoint = globalProperties.get(TOKEN_ENDPOINT_CONTEXT);
         if ( tokenEndpoint.isEmpty()) {
-            logger.error("tokenEndpoint can't be empty ");
+            log.error("tokenEndpoint can't be empty ");
         }
         return PropertyUtils.replaceProperty(tokenEndpoint);
     }
@@ -163,7 +167,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
         try {
             refreshTimeOffset = Long.parseLong(globalProperties.get(TOKEN_REFRESH_TIME_OFFSET));
         } catch (NumberFormatException e) {
-            logger.error("refreshTimeOffset should be a number", e);
+            log.error("refreshTimeOffset should be a number", e);
         }
         return refreshTimeOffset;
     }
@@ -198,7 +202,33 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
         } catch (KeyManagementException | NoSuchAlgorithmException e) {
             return null;
         }
+    }
 
+    private static Logger getLogger() {
+        return new Logger() {
+            @Override
+            protected void log(String configKey, String format, Object... args) {
+                if (log.isDebugEnabled()) {
+                    log.debug(String.format(methodTag(configKey) + format, args));
+                }
+            }
+
+            @Override
+            protected void logRequest(String configKey, Level logLevel, Request request) {
+                if (log.isDebugEnabled()) {
+                    super.logRequest(configKey, logLevel, request);
+                }
+            }
+
+            @Override
+            protected Response logAndRebufferResponse(String configKey, Level logLevel, Response response,
+                                                      long elapsedTime) throws IOException {
+                if (log.isDebugEnabled()) {
+                    return super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
+                }
+                return response;
+            }
+        };
     }
 
 }

components/extensions/mb-extensions/org.wso2.carbon.andes.extensions.device.mgt.mqtt.authorization/src/main/java/org/wso2/carbon/andes/extensions/device/mgt/mqtt/authorization/DeviceAccessBasedMQTTAuthorizer.java

@@ -21,6 +21,9 @@ package org.wso2.carbon.andes.extensions.device.mgt.mqtt.authorization;
 import feign.Client;
 import feign.Feign;
 import feign.FeignException;
+import feign.Logger;
+import feign.Request;
+import feign.Response;
 import feign.gson.GsonDecoder;
 import feign.gson.GsonEncoder;
 import feign.jaxrs.JAXRSContract;
@@ -44,7 +47,6 @@ import org.wso2.carbon.user.api.UserStoreException;
 
 import javax.cache.Cache;
 import javax.cache.CacheConfiguration;
-import javax.cache.CacheManager;
 import javax.cache.Caching;
 import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.SSLContext;
@@ -52,6 +54,7 @@ import javax.net.ssl.SSLSession;
 import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
+import java.io.IOException;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
@@ -67,7 +70,7 @@ import java.util.concurrent.TimeUnit;
 public class DeviceAccessBasedMQTTAuthorizer implements IAuthorizer {
 
     private static final String UI_EXECUTE = "ui.execute";
-    private static Log logger = LogFactory.getLog(DeviceAccessBasedMQTTAuthorizer.class);
+    private static Log log = LogFactory.getLog(DeviceAccessBasedMQTTAuthorizer.class);
     AuthorizationConfigurationManager MQTTAuthorizationConfiguration;
     private static final String CDMF_SERVER_BASE_CONTEXT = "/api/device-mgt/v1.0";
     private static final String CACHE_MANAGER_NAME = "mqttAuthorizationCacheManager";
@@ -77,8 +80,8 @@ public class DeviceAccessBasedMQTTAuthorizer implements IAuthorizer {
 
     public DeviceAccessBasedMQTTAuthorizer() {
         this.MQTTAuthorizationConfiguration = AuthorizationConfigurationManager.getInstance();
-        deviceAccessAuthorizationAdminService = Feign.builder().client(getSSLClient())
-                .requestInterceptor(new OAuthRequestInterceptor())
+        deviceAccessAuthorizationAdminService = Feign.builder().client(getSSLClient()).logger(getLogger())
+                .logLevel(Logger.Level.FULL).requestInterceptor(new OAuthRequestInterceptor())
                 .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                 .target(DeviceAccessAuthorizationAdminService.class,
                         MQTTAuthorizationConfiguration.getDeviceMgtServerUrl() + CDMF_SERVER_BASE_CONTEXT);
@@ -117,7 +120,7 @@ public class DeviceAccessBasedMQTTAuthorizer implements IAuthorizer {
                     }
                     return false;
                 } catch (FeignException e) {
-                    logger.error(e.getMessage(), e);
+                    log.error(e.getMessage(), e);
                     return false;
                 }
             }
@@ -160,7 +163,7 @@ public class DeviceAccessBasedMQTTAuthorizer implements IAuthorizer {
                     }
                 }
             } catch (FeignException e) {
-                logger.error(e.getMessage(), e);
+                log.error(e.getMessage(), e);
             }
         } finally {
             PrivilegedCarbonContext.endTenantFlow();
@@ -204,7 +207,7 @@ public class DeviceAccessBasedMQTTAuthorizer implements IAuthorizer {
                     userRealm.getAuthorizationManager().isUserAuthorized(username, permission, action);
         } catch (UserStoreException e) {
             String errorMsg = String.format("Unable to authorize the user : %s", username);
-            logger.error(errorMsg, e);
+            log.error(errorMsg, e);
             return false;
         } finally {
             PrivilegedCarbonContext.endTenantFlow();
@@ -263,7 +266,33 @@ public class DeviceAccessBasedMQTTAuthorizer implements IAuthorizer {
         } catch (KeyManagementException | NoSuchAlgorithmException e) {
             return null;
         }
+    }
 
+    private static Logger getLogger() {
+        return new Logger() {
+            @Override
+            protected void log(String configKey, String format, Object... args) {
+                if (log.isDebugEnabled()) {
+                    log.debug(String.format(methodTag(configKey) + format, args));
+                }
+            }
+
+            @Override
+            protected void logRequest(String configKey, Level logLevel, Request request) {
+                if (log.isDebugEnabled()) {
+                    super.logRequest(configKey, logLevel, request);
+                }
+            }
+
+            @Override
+            protected Response logAndRebufferResponse(String configKey, Level logLevel, Response response,
+                                                      long elapsedTime) throws IOException {
+                if (log.isDebugEnabled()) {
+                    return super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
+                }
+                return response;
+            }
+        };
     }
 
 }

components/extensions/mb-extensions/org.wso2.carbon.andes.extensions.device.mgt.mqtt.authorization/src/main/java/org/wso2/carbon/andes/extensions/device/mgt/mqtt/authorization/client/OAuthRequestInterceptor.java

@@ -16,14 +16,19 @@ package org.wso2.carbon.andes.extensions.device.mgt.mqtt.authorization.client;
 
 import feign.Client;
 import feign.Feign;
+import feign.Logger;
+import feign.Request;
 import feign.RequestInterceptor;
 import feign.RequestTemplate;
+import feign.Response;
 import feign.auth.BasicAuthRequestInterceptor;
 import feign.codec.EncodeException;
 import feign.codec.Encoder;
 import feign.gson.GsonDecoder;
 import feign.gson.GsonEncoder;
 import feign.jaxrs.JAXRSContract;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.andes.extensions.device.mgt.mqtt.authorization.client.dto.AccessTokenInfo;
 import org.wso2.carbon.andes.extensions.device.mgt.mqtt.authorization.client.dto.ApiApplicationKey;
 import org.wso2.carbon.andes.extensions.device.mgt.mqtt.authorization.client.dto.ApiApplicationRegistrationService;
@@ -37,6 +42,7 @@ import javax.net.ssl.SSLSession;
 import javax.net.ssl.SSLSocketFactory;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
+import java.io.IOException;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 
@@ -55,6 +61,7 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
     private static final String REQUIRED_SCOPE = "perm:authorization:verify";
     private ApiApplicationRegistrationService apiApplicationRegistrationService;
     private TokenIssuerService tokenIssuerService;
+    private static Log log = LogFactory.getLog(OAuthRequestInterceptor.class);
 
     /**
      * Creates an interceptor that authenticates all requests.
@@ -63,8 +70,8 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
         refreshTimeOffset = AuthorizationConfigurationManager.getInstance().getTokenRefreshTimeOffset() * 1000;
         String username = AuthorizationConfigurationManager.getInstance().getUsername();
         String password = AuthorizationConfigurationManager.getInstance().getPassword();
-        apiApplicationRegistrationService = Feign.builder().client(getSSLClient()).requestInterceptor(
-                new BasicAuthRequestInterceptor(username, password))
+        apiApplicationRegistrationService = Feign.builder().client(getSSLClient()).logger(getLogger()).logLevel(
+                Logger.Level.FULL).requestInterceptor(new BasicAuthRequestInterceptor(username, password))
                 .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                 .target(ApiApplicationRegistrationService.class,
                         AuthorizationConfigurationManager.getInstance().getDeviceMgtServerUrl() +
@@ -85,8 +92,8 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
             String consumerSecret = apiApplicationKey.getConsumerSecret();
             String username = AuthorizationConfigurationManager.getInstance().getUsername();
             String password = AuthorizationConfigurationManager.getInstance().getPassword();
-            tokenIssuerService = Feign.builder().client(getSSLClient()).requestInterceptor(
-                    new BasicAuthRequestInterceptor(consumerKey, consumerSecret))
+            tokenIssuerService = Feign.builder().client(getSSLClient()).logger(getLogger()).logLevel(Logger.Level.FULL)
+                    .requestInterceptor(new BasicAuthRequestInterceptor(consumerKey, consumerSecret))
                     .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
                     .target(TokenIssuerService.class,
                             AuthorizationConfigurationManager.getInstance().getTokenEndpoint());
@@ -133,7 +140,33 @@ public class OAuthRequestInterceptor implements RequestInterceptor {
         } catch (KeyManagementException | NoSuchAlgorithmException e) {
             return null;
         }
+    }
 
+    private static Logger getLogger() {
+        return new Logger() {
+            @Override
+            protected void log(String configKey, String format, Object... args) {
+                if (log.isDebugEnabled()) {
+                    log.debug(String.format(methodTag(configKey) + format, args));
+                }
+            }
+
+            @Override
+            protected void logRequest(String configKey, Level logLevel, Request request) {
+                if (log.isDebugEnabled()) {
+                    super.logRequest(configKey, logLevel, request);
+                }
+            }
+
+            @Override
+            protected Response logAndRebufferResponse(String configKey, Level logLevel, Response response,
+                                                      long elapsedTime) throws IOException {
+                if (log.isDebugEnabled()) {
+                    return super.logAndRebufferResponse(configKey, logLevel, response, elapsedTime);
+                }
+                return response;
+            }
+        };
     }
 
 }