/*
* © Copyright IBM Corp. 2013
*
* 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.
*/
package com.ibm.sbt.sample.app;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import com.ibm.commons.runtime.Application;
import com.ibm.commons.runtime.Context;
import com.ibm.commons.runtime.RuntimeFactory;
import com.ibm.commons.runtime.impl.app.RuntimeFactoryStandalone;
import com.ibm.commons.runtime.properties.FileResourcePropertiesFactory;
import com.ibm.commons.runtime.util.ParameterProcessor;
import com.ibm.commons.util.io.json.JsonException;
import com.ibm.commons.util.io.json.JsonJavaFactory;
import com.ibm.commons.util.io.json.JsonJavaObject;
import com.ibm.commons.util.io.json.JsonParser;
import com.ibm.sbt.security.authentication.AuthenticationException;
import com.ibm.sbt.services.client.SBTServiceException;
import com.ibm.sbt.services.client.connections.activitystreams.ActivityStreamService;
import com.ibm.sbt.services.endpoints.BasicEndpoint;
import com.ibm.sbt.services.endpoints.EndpointFactory;
/**
* This class demonstrates how to publish to any user's ActivityStream
* from a standalone class.
*
* It accomplishes this using the "to:" field in the template, which specifies users to forward the post to. Admin privileges allow forwarding to any user.
*
* @author Carlos Manias, Francis Moloney
* @since 13 May 2013
*/
public class AdminPublishActivityStream {
private static final String APPLICATION_JSON = "application/json";
private static final String DEFAULT_ENDPOINT = "connections";
private RuntimeFactory runtimeFactory;
private Context context;
private Application application;
private BasicEndpoint endpoint;
private ActivityStreamService _service;
/**
* Default constructor. Initialises the Context, the ActivityStreamService, and the default ActivityStreamService endpoint.
*
* Be sure to call the destroy() method in this class if you don't intend to keep the initialised Context around.
*/
public AdminPublishActivityStream(){
this(DEFAULT_ENDPOINT, true);
}
/**
*
* @param endpointName The name of the endpoint to use.
* @param initEnvironment - True if you want a Context initialised, false if there is one already. destroy() should be called when finished using this class if a context is initialised here.
*
*/
public AdminPublishActivityStream(String endpointName, boolean initEnvironment){
if(initEnvironment)
this.initEnvironment();
this._service = new ActivityStreamService();
this.setEndpoint((BasicEndpoint)EndpointFactory.getEndpoint(endpointName));
}
/**
*
* @return The endpoint used in this class.
*/
public BasicEndpoint getEndpoint(){
return this.endpoint;
}
/**
*
* @param endpoint The endpoint you want this class to use.
*/
public void setEndpoint(BasicEndpoint endpoint){
this.endpoint = endpoint;
this._service.setEndpoint(endpoint);
}
/**
* Initialise the Context, needed for Services and Endpoints.
*/
public void initEnvironment() {
runtimeFactory = new RuntimeFactoryStandalone();
application = runtimeFactory.initApplication(null);
context = Context.init(application, null, null);
}
/**
* Destroy the Context.
*/
public void destroy(){
if (context != null)
Context.destroy(context);
if (application != null)
Application.destroy(application);
}
/**
* Post the json template to the user's stream. User specified by the endpoint's login.
*
* @param template The JSON template
* @return {String}
* @throws SBTServiceException
*/
public String postToStream(JsonJavaObject template) throws SBTServiceException {
if(_service == null){
_service = new ActivityStreamService();
_service.setEndpoint(this.endpoint);
}
String returnedData = _service.postEntry(template);
return returnedData;
}
/**
*
* @param template
* @return {String}
* @throws JsonException
* @throws AuthenticationException
* @throws SBTServiceException
*/
public String postToStream(String template) throws JsonException, AuthenticationException, SBTServiceException{
JsonJavaObject data = (JsonJavaObject)JsonParser.fromJson(JsonJavaFactory.instanceEx, template);
return postToStream(data);
}
/**
* Demo.
* @param args
*/
public static void main(String[] args) {
if (args.length >= 2) {
AdminPublishActivityStream paas = new AdminPublishActivityStream();
JsonJavaObject template;
try {
paas.getEndpoint().login("admin", "passw0rd");
template = paas.mergeData(args[0], args[1]);
String streamEntry = paas.postToStream(template);
if(streamEntry != null)
System.out.println("Success, posted ActivityStream entry: " + streamEntry);
} catch (JsonException e) {
e.printStackTrace();
} catch (AuthenticationException e) {
e.printStackTrace();
} catch (SBTServiceException e) {
e.printStackTrace();
} finally{
paas.destroy();
}
}
else {
System.out.println("Usage: PublishAnyActivityStream templateFilePath dataFilePath");
}
}
/*
* Reads template file. Used when creating the template for the main method sample.
*/
private String readFile(String filePath) {
BufferedReader br = null;
StringBuilder sb = new StringBuilder();
try {
String sCurrentLine;
URL path = getClass().getResource(filePath);
if(path!=null) {
File f;
f = new File(path.toURI());
br = new BufferedReader(new FileReader(f));
while ((sCurrentLine = br.readLine()) != null) {
sb.append(sCurrentLine);
}
} else {
throw new FileNotFoundException();
}
} catch (IOException e) {
e.printStackTrace();
} catch (URISyntaxException e) {
e.printStackTrace();
} finally {
try {
if (br != null) br.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
return sb.toString();
}
/*
* Merges template with data
*/
private JsonJavaObject mergeData(String templatePath, String propertiesPath) throws JsonException{
String template = readFile(templatePath);
FileResourcePropertiesFactory frpf = new FileResourcePropertiesFactory();
Properties props = frpf.readFactoriesFromFile(propertiesPath);
template = ParameterProcessor.process(template, props);
JsonJavaObject templateObj = (JsonJavaObject)JsonParser.fromJson(JsonJavaFactory.instanceEx, template);
return templateObj;
}
}