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fix
Harshan Liyanage 8 years ago
commit 572aa24c5f
6 changed files with 378 additions and 0 deletions
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91
pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!--
~ Copyright (c) 2016 WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
~
~ Licensed 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.
-->
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<groupId>org.wso2.carbon.devicemgt-plugins</groupId>
<artifactId>siddhi-extensions</artifactId>
<version>3.0.3-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>org.wso2.extension.siddhi.execution.json</artifactId>
<packaging>bundle</packaging>
<name>WSO2 Siddhi Execution Extension - Json</name>
<url>http://wso2.org</url>
<dependencies>
<dependency>
<groupId>org.wso2.siddhi</groupId>
<artifactId>siddhi-core</artifactId>
</dependency>
<dependency>
<groupId>org.wso2.siddhi</groupId>
<artifactId>siddhi-query-api</artifactId>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
</dependency>
<dependency>
<groupId>org.json.wso2</groupId>
<artifactId>json</artifactId>
<version>${analytics.json.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${wso2.maven.compiler.source}</source>
<target>${wso2.maven.compiler.target}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<extensions>true</extensions>
<configuration>
<instructions>
<Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
<Bundle-Name>${project.artifactId}</Bundle-Name>
<Export-Package>
org.wso2.extension.siddhi.execution.json,
org.wso2.extension.siddhi.execution.json.*
</Export-Package>
<Import-Package>
org.json,
org.wso2.siddhi.core.*,
org.wso2.siddhi.query.api.*,
</Import-Package>
</instructions>
</configuration>
</plugin>
</plugins>
</build>
</project>

112
src/main/java/org/wso2/extension/siddhi/execution/json/getPropertyFunctionExtension.java
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/*
* 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.extension.siddhi.execution.json;
import org.json.JSONException;
import org.json.JSONObject;
import org.wso2.siddhi.core.config.ExecutionPlanContext;
import org.wso2.siddhi.core.exception.ExecutionPlanRuntimeException;
import org.wso2.siddhi.core.executor.ExpressionExecutor;
import org.wso2.siddhi.core.executor.function.FunctionExecutor;
import org.wso2.siddhi.query.api.definition.Attribute;
import org.wso2.siddhi.query.api.exception.ExecutionPlanValidationException;
/**
* getProperty(json , propertyName)
* Returns the vale of the property from the given json json
* Accept Type(s): (STRING, STRING)
* Return Type(s): (STRING|INT|DOUBLE|FLOAT|OBJECT)
*/
public class getPropertyFunctionExtension extends FunctionExecutor {
Attribute.Type returnType = Attribute.Type.STRING;
@Override
protected void init(ExpressionExecutor[] attributeExpressionExecutors,
ExecutionPlanContext executionPlanContext) {
if (attributeExpressionExecutors.length != 2) {
throw new ExecutionPlanValidationException(
"Invalid no of arguments passed to json:getProperty() function," + " required 2, but found "
+ attributeExpressionExecutors.length);
}
if (attributeExpressionExecutors[0].getReturnType() != Attribute.Type.STRING) {
throw new ExecutionPlanValidationException(
"Invalid parameter type found for the first argument of json:getProperty() function, " + "required "
+ Attribute.Type.STRING + ", but found " + attributeExpressionExecutors[0].getReturnType()
.toString());
}
if (attributeExpressionExecutors[1].getReturnType() != Attribute.Type.STRING) {
throw new ExecutionPlanValidationException(
"Invalid parameter type found for the second argument of json:getProperty() function, " + "required "
+ Attribute.Type.STRING + ", but found " + attributeExpressionExecutors[1].getReturnType()
.toString());
}
}
@Override
protected Object execute(Object[] data) {
if (data[0] == null) {
throw new ExecutionPlanRuntimeException("Invalid input given to json:getProperty() function. First argument cannot be null");
}
if (data[1] == null) {
throw new ExecutionPlanRuntimeException("Invalid input given to json:getProperty() function. Second argument cannot be null");
}
String jsonString = (String) data[0];
String property = (String) data[1];
JSONObject jsonObject = null;
try {
jsonObject = new JSONObject(jsonString);
return jsonObject.get(property).toString();
} catch (JSONException e) {
throw new ExecutionPlanRuntimeException("Cannot parse JSON String in json:getPeroperty() function. " + e);
}
}
@Override
protected Object execute(Object data) {
return null; //Since the getProperty function takes in 2 parameters, this method does not get called. Hence,not implemented.
}
@Override
public void start() {
//Nothing to start
}
@Override
public void stop() {
//Nothing to stop
}
@Override
public Attribute.Type getReturnType() {
return returnType;
}
@Override
public Object[] currentState() {
return null; //No need to maintain a state.
}
@Override
public void restoreState(Object[] state) {
//Since there's no need to maintain a state, nothing needs to be done here.
}
}

19
src/main/resources/json.siddhiext
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#
# 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.
#
getProperty=org.wso2.extension.siddhi.execution.json.getPropertyFunctionExtension

88
src/test/java/org/wso2/extension/siddhi/execution/json/getPropertyFunctionTestCase.java
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/*
* 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.extension.siddhi.execution.json;
import junit.framework.Assert;
import org.apache.log4j.Logger;
import org.junit.Before;
import org.junit.Test;
import org.wso2.siddhi.core.ExecutionPlanRuntime;
import org.wso2.siddhi.core.SiddhiManager;
import org.wso2.siddhi.core.event.Event;
import org.wso2.siddhi.core.query.output.callback.QueryCallback;
import org.wso2.siddhi.core.stream.input.InputHandler;
import org.wso2.siddhi.core.util.EventPrinter;
import org.wso2.extension.siddhi.execution.json.test.util.SiddhiTestHelper;
import java.util.concurrent.atomic.AtomicInteger;
public class getPropertyFunctionTestCase {
static final Logger log = Logger.getLogger(getPropertyFunctionTestCase.class);
private AtomicInteger count = new AtomicInteger(0);
private volatile boolean eventArrived;
@Before
public void init() {
count.set(0);
eventArrived = false;
}
@Test
public void testGetPropertyFunctionExtension() throws InterruptedException {
log.info("getPropertyFunctionExtension TestCase");
SiddhiManager siddhiManager = new SiddhiManager();
String inStreamDefinition = "define stream inputStream (payload string, id string, volume long);";
String query = ("@info(name = 'query1') from inputStream select id, json:getProperty(payload, 'latitude') "
+ "as latitude insert into outputStream;");
ExecutionPlanRuntime executionPlanRuntime = siddhiManager.createExecutionPlanRuntime(inStreamDefinition + query);
executionPlanRuntime.addCallback("query1", new QueryCallback() {
@Override
public void receive(long timeStamp, Event[] inEvents, Event[] removeEvents) {
EventPrinter.print(timeStamp, inEvents, removeEvents);
for (Event event : inEvents) {
count.incrementAndGet();
if (count.get() == 1) {
Assert.assertEquals("1.5", event.getData(1));
eventArrived = true;
}
if (count.get() == 2) {
Assert.assertEquals("67.5", event.getData(1));
eventArrived = true;
}
if (count.get() == 3) {
Assert.assertEquals("7.5", event.getData(1));
eventArrived = true;
}
}
}
});
InputHandler inputHandler = executionPlanRuntime.getInputHandler("inputStream");
executionPlanRuntime.start();
inputHandler.send(new Object[]{"{'latitude' : 1.5, 'longitude' : 78.5}","IBM",100l});
inputHandler.send(new Object[]{"{'latitude' : 67.5, 'longitude' : 34.9}","WSO2", 200l});
inputHandler.send(new Object[]{"{'latitude' : 7.5, 'longitude' : 44.9}", "XYZ", 200l});
SiddhiTestHelper.waitForEvents(100, 3, count, 60000);
Assert.assertEquals(3, count.get());
Assert.assertTrue(eventArrived);
executionPlanRuntime.shutdown();
}
}

32
src/test/java/org/wso2/extension/siddhi/execution/json/test/util/SiddhiTestHelper.java
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/*
* 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.extension.siddhi.execution.json.test.util;
import java.util.concurrent.atomic.AtomicInteger;
public class SiddhiTestHelper {
public static void waitForEvents(long sleepTime, int expectedCount, AtomicInteger actualCount, long timeout) throws InterruptedException {
long currentWaitTime = 0;
long startTime = System.currentTimeMillis();
while ((actualCount.get() < expectedCount) && (currentWaitTime <= timeout)) {
Thread.sleep(sleepTime);
currentWaitTime = System.currentTimeMillis() - startTime;
}
}
}

36
src/test/resources/log4j.properties
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#
# Copyright (c) 2015, 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.
#
# For the general syntax of property based configuration files see the
# documenation of org.apache.log4j.PropertyConfigurator.
# The root category uses the appender called A1. Since no priority is
# specified, the root category assumes the default priority for root
# which is DEBUG in log4j. The root category is the only category that
# has a default priority. All other categories need not be assigned a
# priority in which case they inherit their priority from the
# hierarchy.
#log4j.rootLogger=DEBUG, stdout
log4j.rootLogger=INFO, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%m%n
#log4j.appender.stdout.layout.ConversionPattern=[%t] %-5p %c %x - %m%n
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