org.wso2.developerstudio.appfactory.core.client.HttpsJenkinsClient.java Source code

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Here is the source code for org.wso2.developerstudio.appfactory.core.client.HttpsJenkinsClient.java

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/* Copyright (c) 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.
 */

package org.wso2.developerstudio.appfactory.core.client;

import java.io.IOException;

import org.apache.http.HttpException;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.HttpRequestInterceptor;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScheme;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.AuthState;
import org.apache.http.auth.Credentials;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.protocol.ClientContext;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.ExecutionContext;
import org.apache.http.protocol.HttpContext;
import org.wso2.developerstudio.appfactory.core.Activator;
import org.wso2.developerstudio.appfactory.core.authentication.Authenticator;
import org.wso2.developerstudio.eclipse.logging.core.IDeveloperStudioLog;
import org.wso2.developerstudio.eclipse.logging.core.Logger;

/**
* Simple class to launch a jenkins build on run@Cloud platform, should also work on every jenkins instance (not tested)
*/
public class HttpsJenkinsClient {
    private static IDeveloperStudioLog log = Logger.getLog(Activator.PLUGIN_ID);

    public static HttpResponse getBulildinfo(String applicationId, String version, String builderBaseUrl,
            int lastBuildNo) {

        DefaultHttpClient client = new DefaultHttpClient();
        client = (DefaultHttpClient) HttpsJaggeryClient.wrapClient(client, builderBaseUrl);
        client.getCredentialsProvider().setCredentials(new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT),
                new UsernamePasswordCredentials(Authenticator.getInstance().getCredentials().getUser(),
                        Authenticator.getInstance().getCredentials().getPassword()));

        // Generate BASIC scheme object and stick it to the execution context
        BasicScheme basicAuth = new BasicScheme();
        BasicHttpContext context = new BasicHttpContext();
        context.setAttribute("preemptive-auth", basicAuth);

        // Add as the first (because of the zero) request interceptor
        // It will first intercept the request and preemptively initialize the authentication scheme if there is not
        client.addRequestInterceptor(new PreemptiveAuth(), 0);
        String getUrl = builderBaseUrl + "/job/" + applicationId + "-" + version + "-default/" + lastBuildNo
                + "/consoleText";
        HttpGet get = new HttpGet(getUrl);

        try {
            // Execute your request with the given context
            HttpResponse response = client.execute(get, context);
            return response;
        } catch (Exception e) {
            log.error("Jenkins Client err", e);
        }
        return null;
    }

    /**
    * Preemptive authentication intercepter
    */
    static class PreemptiveAuth implements HttpRequestInterceptor {

        /*
          * (non-Javadoc)
          *
          * @see org.apache.http.HttpRequestInterceptor#process(org.apache.http.HttpRequest,
          * org.apache.http.protocol.HttpContext)
          */
        public void process(HttpRequest request, HttpContext context) throws HttpException, IOException {
            // Get the AuthState
            AuthState authState = (AuthState) context.getAttribute(ClientContext.TARGET_AUTH_STATE);

            // If no auth scheme available yet, try to initialize it preemptively
            if (authState.getAuthScheme() == null) {
                AuthScheme authScheme = (AuthScheme) context.getAttribute("preemptive-auth");
                CredentialsProvider credsProvider = (CredentialsProvider) context
                        .getAttribute(ClientContext.CREDS_PROVIDER);
                HttpHost targetHost = (HttpHost) context.getAttribute(ExecutionContext.HTTP_TARGET_HOST);
                if (authScheme != null) {
                    Credentials creds = credsProvider
                            .getCredentials(new AuthScope(targetHost.getHostName(), targetHost.getPort()));
                    if (creds == null) {
                        throw new HttpException("No credentials for preemptive authentication");
                    }
                    authState.setAuthScheme(authScheme);
                    authState.setCredentials(creds);
                }
            }

        }

    }

}