285 lines
9.3 KiB
Java
285 lines
9.3 KiB
Java
package org.gcube.datacatalogue.catalogue.utils;
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import java.io.IOException;
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import java.net.HttpURLConnection;
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import java.util.List;
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import org.apache.http.Header;
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import org.apache.http.HttpEntity;
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import org.apache.http.HttpResponse;
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import org.apache.http.client.ClientProtocolException;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.entity.StringEntity;
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import org.apache.http.impl.client.CloseableHttpClient;
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import org.apache.http.impl.client.HttpClientBuilder;
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import org.apache.http.util.EntityUtils;
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import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
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import org.gcube.common.scope.api.ScopeProvider;
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import org.json.simple.JSONObject;
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import org.json.simple.parser.JSONParser;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* Let the Product Catalogue Manager write a post in a VRE and alert there is a new product.
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* @author Costantino Perciante at ISTI-CNR (costantino.perciante@isti.cnr.it)
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*/
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public class WritePostCatalogueManagerThread extends Thread {
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private static final String APPLICATION_ID_CATALOGUE_MANAGER = "org.gcube.datacatalogue.ProductCatalogue";
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private static final String NOTIFICATION_MESSAGE = "Dear members,<br>The item '$PRODUCT_TITLE' has been just published by $USER_FULLNAME.<br>You can find it here: $PRODUCT_URL <br>";
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private static final String SOCIAL_SERVICE_APPLICATION_TOKEN = "/2/tokens/generate-application-token";
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private static final String SOCIAL_SERVICE_WRITE_APPLICATION_POST = "/2/posts/write-post-app";
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private static final String MEDIATYPE_JSON = "application/json";
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private static Logger logger = LoggerFactory.getLogger(WritePostCatalogueManagerThread.class);
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private String scope;
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private String productTitle;
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private String productUrl;
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private boolean enableNotification;
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private List<String> hashtags;
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private String userFullName;
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private String token;
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/**
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* @param token
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* @param scope
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* @param productTitle
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* @param productUrl
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* @param enableNotification
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* @param hashtags
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* @param userFullName
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*/
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public WritePostCatalogueManagerThread(
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String scope,
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String productTitle, String productUrl, boolean enableNotification,
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List<String> hashtags, String userFullName, String token) {
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super();
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this.scope = scope;
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this.productTitle = productTitle;
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this.productUrl = productUrl;
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this.enableNotification = enableNotification;
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this.hashtags = hashtags;
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this.userFullName = userFullName;
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this.token = token;
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}
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@Override
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public void run() {
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try{
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// set token and scope
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ScopeProvider.instance.set(scope);
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SecurityTokenProvider.instance.set(token);
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logger.info("Started request to write application post "
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+ "for new product created. Scope is " + scope + " and "
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+ "token is " + token.substring(0, 10) + "****************");
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// write
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writeProductPost(
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productTitle,
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productUrl,
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userFullName,
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hashtags,
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enableNotification
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);
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}catch(Exception e){
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logger.error("Failed to write the post because of the following error ", e);
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}finally{
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SecurityTokenProvider.instance.reset();
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ScopeProvider.instance.reset();
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}
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}
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/**
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* Send notification to vre members about the created product by writing a post.
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* @param productName the title of the product
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* @param productUrl the url of the product
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* @param hashtags a list of product's hashtags
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* @throws Exception
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*/
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private static void writeProductPost(String productName, String productUrl, String userFullname, List<String> hashtags, boolean enablePostNotification) throws Exception{
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// discover service endpoint for the social networking library
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String currentScope = ScopeProvider.instance.get();
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String tokenUser = SecurityTokenProvider.instance.get();
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logger.info("Current scope for writeProductPost is " + currentScope + " and token is " + tokenUser.substring(0, 10) + "***************");
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GcoreEndpointReaderSNL socialService = new GcoreEndpointReaderSNL();
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String basePath = socialService.getServiceBasePath();
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if(basePath == null){
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logger.error("Unable to write a post because there is no social networking service available");
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}else{
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// check base path form
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basePath = basePath.endsWith("/") ? basePath : basePath + "/";
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try(CloseableHttpClient client = HttpClientBuilder.create().build();){
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String pathTokenApp = basePath + SOCIAL_SERVICE_APPLICATION_TOKEN + "?gcube-token=" + tokenUser;
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String tokenApp = requireAppToken(client, pathTokenApp);
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if(tokenApp != null){
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String pathWritePost = basePath + SOCIAL_SERVICE_WRITE_APPLICATION_POST + "?gcube-token=" + tokenApp;
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writePost(client, pathWritePost, productName, productUrl, userFullname, hashtags, enablePostNotification);
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}
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}catch(Exception e){
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logger.error("Failed to create a post", e);
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}
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}
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}
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/**
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* Require the application token
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* @param tokenUser
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* @param basePath
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* @param client
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* @return
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*/
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private static String requireAppToken(CloseableHttpClient client, String path){
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String token = null;
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try{
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HttpResponse response = performRequest(client, path, "{\"app_id\":\"" + APPLICATION_ID_CATALOGUE_MANAGER + "\"}");
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int statusTokenGenerate = response.getStatusLine().getStatusCode();
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if(statusTokenGenerate == HttpURLConnection.HTTP_CREATED){
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// extract token
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JSONObject obj = getJSONObject(response);
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if(((Boolean) obj.get("success")))
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token = (String)obj.get("result");
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else
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return null;
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}else if(statusTokenGenerate == HttpURLConnection.HTTP_MOVED_TEMP
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|| statusTokenGenerate == HttpURLConnection.HTTP_MOVED_PERM
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|| statusTokenGenerate == HttpURLConnection.HTTP_SEE_OTHER){
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// re-execute
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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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logger.debug("New location is " + realLocation);
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token = requireAppToken(client, realLocation);
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}else
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return null;
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}catch(Exception e){
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logger.error("Failed to retrieve application token", e);
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}
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logger.info("Returning app token " + (token != null ? token.substring(0, 10) + "*************************" : null));
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return token;
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}
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/**
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* Write post request
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* @param client
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* @param applicationToken
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* @param productName
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* @param productUrl
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* @param userFullname
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* @param hashtags
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*/
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private static void writePost(CloseableHttpClient client, String path, String productName, String productUrl, String userFullname, List<String> hashtags,
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boolean enablePostNotification) {
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try{
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// replace
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String message = NOTIFICATION_MESSAGE.replace("$PRODUCT_TITLE", productName).replace("$PRODUCT_URL", productUrl).replace("$USER_FULLNAME", userFullname);
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if(hashtags != null && !hashtags.isEmpty())
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for (String hashtag : hashtags) {
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String modifiedHashtag = hashtag.replaceAll(" ", "_").replace("_+", "_");
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if(modifiedHashtag.endsWith("_"))
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modifiedHashtag = modifiedHashtag.substring(0, modifiedHashtag.length() - 1);
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message += " #" + modifiedHashtag; // ckan accepts tag with empty spaces, we don't
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}
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logger.info("The post that is going to be written is -> " + message);
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JSONObject objRequest = new JSONObject();
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objRequest.put("text", message);
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objRequest.put("enable_notification", enablePostNotification);
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HttpResponse response = performRequest(client, path, objRequest.toJSONString());
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int statusWritePost = response.getStatusLine().getStatusCode();
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if(statusWritePost == HttpURLConnection.HTTP_CREATED){
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// extract token
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JSONObject obj = getJSONObject(response);
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if(((Boolean) obj.get("success")))
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logger.info("Post written");
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else
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logger.info("Failed to write the post " + obj.get("message"));
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}else if(statusWritePost == HttpURLConnection.HTTP_MOVED_TEMP
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|| statusWritePost == HttpURLConnection.HTTP_MOVED_PERM
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|| statusWritePost == HttpURLConnection.HTTP_SEE_OTHER){
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// re-execute
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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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logger.debug("New location is " + realLocation);
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writePost(client, realLocation, productName, productUrl, userFullname, hashtags, enablePostNotification);
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}else
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throw new RuntimeException("Failed to write the post");
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}catch(Exception e){
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logger.error("Failed to retrieve application token", e);
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}
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}
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/**
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* Convert the json response to a map
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* @param response
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* @return
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*/
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private static JSONObject getJSONObject(HttpResponse response){
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JSONObject toReturn = null;
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HttpEntity entity = response.getEntity();
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if (entity != null) {
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try {
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JSONParser parser = new JSONParser();
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return (JSONObject)parser.parse(EntityUtils.toString(response.getEntity()));
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}catch(Exception e){
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logger.error("Failed to read json object", e);
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}
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}
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logger.trace("Returning " + toReturn);
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return toReturn;
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}
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/**
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* Perform an http request post request with json entity
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* @throws IOException
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* @throws ClientProtocolException
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*/
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private static HttpResponse performRequest(CloseableHttpClient client, String path, String entity) throws ClientProtocolException, IOException{
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HttpPost request = new HttpPost(path);
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StringEntity stringEntity = new StringEntity(entity);
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stringEntity.setContentType(MEDIATYPE_JSON);
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request.setEntity(stringEntity);
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return client.execute(request);
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}
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} |