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Revision 55163

Added by Alessia Bardi about 5 years ago

Re-implemented POST VRE following instructions at https://wiki.gcube-system.org/gcube/Social_Networking_Service#Write_application_post

View differences:

modules/dnet-openaireplus-workflows/trunk/src/main/java/eu/dnetlib/msro/openaireplus/workflows/nodes/vre/VREPostJobNode.java
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package eu.dnetlib.msro.openaireplus.workflows.nodes.vre;
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import java.io.IOException;


  		




  
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import java.net.HttpURLConnection;


  		




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import java.net.URI;


  		




  
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import java.net.URISyntaxException;


  		




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import com.googlecode.sarasvati.Arc;


  		




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import com.googlecode.sarasvati.NodeToken;


  		




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import eu.dnetlib.msro.workflows.nodes.SimpleJobNode;


  		




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import org.apache.commons.logging.Log;


  		




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import org.apache.commons.logging.LogFactory;


  		




  
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import org.apache.http.Header;


  		




  
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import org.apache.http.HttpResponse;


  		




  
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import org.apache.http.client.HttpClient;


  		




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import org.apache.http.client.methods.HttpPost;


  		




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import org.apache.http.client.utils.URIBuilder;


  		




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import org.apache.http.entity.ContentType;


  		




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import org.apache.http.entity.StringEntity;


  		




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import org.apache.http.impl.client.BasicResponseHandler;


  		




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import org.apache.http.impl.client.CloseableHttpClient;


  		




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import org.apache.http.impl.client.HttpClients;


  		




  
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import org.json.JSONObject;


  		




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/**


  		




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 * Created by alessia on 24/03/16.


  		




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	private String scheme;


  		




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	private String host;


  		




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	private String postPath;


  		




  
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	private int followRedirect = 10;


  		




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	//POST parameters


  		




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	private String appToken;


  		




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		try {


  		




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			URI postUri = new URIBuilder().setScheme(scheme).setHost(host).setPath(postPath).build();


  		




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			HttpPost postAction = new HttpPost(postUri);


  		




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			StringBuilder strBuilder = new StringBuilder();


  		




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			strBuilder.append("token=").append(appToken).append("&previewtitle=").append(previewTitle)


  		




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					.append("&previewdescription=").append(previewDescription).append("&text=").append(text)


  		




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					.append("&httpimageurl=").append(httpImageUrl).append("&enablenotification=").append(enableNotification);


  		




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			String postBody = strBuilder.toString();


  		




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			log.debug("POST body: " + postBody);


  		




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			StringEntity ent = new StringEntity(postBody, ContentType.APPLICATION_FORM_URLENCODED);


  		




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			postAction.setEntity(ent);


  		




  
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			JSONObject obj = createPostBody();


  		




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			BasicResponseHandler responseHandler = new BasicResponseHandler();


  		




  
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			postAction.addHeader("gcube-token", appToken);


  		




  
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			postAction.addHeader("Content-type", ContentType.APPLICATION_JSON.toString());


  		




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			httpclient.execute(postAction, responseHandler);


  		




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			return Arc.DEFAULT_ARC;


  		




  
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			StringEntity params = new StringEntity(obj.toString(), ContentType.APPLICATION_JSON);


  		




  
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			postAction.setEntity(params);


  		




  
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			return doPost(httpclient, postAction, followRedirect);


  		




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		} finally {


  		




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			httpclient.close();


  		




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		}


  		




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	}


  		




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	protected String doPost(HttpClient httpclient, HttpPost postAction, int followRedirect) throws IOException, URISyntaxException {


  		




  
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		HttpResponse response = httpclient.execute(postAction);


  		




  
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		log.debug(" " + response.getStatusLine().getStatusCode() + " and response message is " + response.getStatusLine().getReasonPhrase());


  		




  
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		int status = response.getStatusLine().getStatusCode();


  		




  
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		switch (status) {


  		




  
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		case HttpURLConnection.HTTP_OK:


  		




  
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		case HttpURLConnection.HTTP_CREATED:


  		




  
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			return Arc.DEFAULT_ARC;


  		




  
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		case HttpURLConnection.HTTP_MOVED_TEMP:


  		




  
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		case HttpURLConnection.HTTP_MOVED_PERM:


  		




  
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		case HttpURLConnection.HTTP_SEE_OTHER:


  		




  
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			if (followRedirect > 0) {


  		




  
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				Header[] locations = response.getHeaders("Location");


  		




  
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				Header lastLocation = locations[locations.length - 1];


  		




  
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				String realLocation = lastLocation.getValue();


  		




  
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				log.info("New location after redirect for posting is " + realLocation);


  		




  
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				// perform again the same request


  		




  
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				postAction.setURI(new URI(realLocation));


  		




  
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				return doPost(httpclient, postAction, followRedirect--);


  		




  
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			} else


  		




  
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				throw new RuntimeException("Too many redirects to post on the VRE");


  		




  
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		}


  		




  
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		throw new RuntimeException("HTTP error code " + status);


  		




  
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	}


  		




  
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	protected JSONObject createPostBody() {


  		




  
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		JSONObject obj = new JSONObject();


  		




  
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		obj.put("text", text);


  		




  
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		obj.put("preview_title", previewTitle);


  		




  
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		obj.put("preview_description", previewDescription);


  		




  
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		obj.put("image_url", httpImageUrl);


  		




  
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		obj.put("enable_notification", Boolean.toString(enableNotification));


  		




  
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		log.debug("POST body: " + obj.toString());


  		




  
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		return obj;


  		




  
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	}


  		




  
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	public String getScheme() {


  		




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		return scheme;


  		




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	}


  		












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