| //Copyright (C) 2014 The Android Open Source Project |
| // |
| //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.googlesource.gerrit.plugins.its.phabricator.conduit; |
| |
| import com.google.gson.Gson; |
| import com.google.gson.JsonElement; |
| |
| import com.googlesource.gerrit.plugins.its.phabricator.conduit.results.CallCapsule; |
| |
| import org.apache.http.HttpEntity; |
| import org.apache.http.client.methods.CloseableHttpResponse; |
| import org.apache.http.client.methods.HttpPost; |
| import org.apache.http.entity.StringEntity; |
| import org.apache.http.impl.client.CloseableHttpClient; |
| import org.apache.http.impl.client.HttpClients; |
| import org.apache.http.util.EntityUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import java.nio.charset.StandardCharsets; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| |
| /** |
| * Abstracts the connection to Conduit API |
| */ |
| class ConduitConnection { |
| private static final Logger log = LoggerFactory.getLogger(Conduit.class); |
| |
| private final String apiUrlBase; |
| private final Gson gson; |
| |
| private CloseableHttpClient client; |
| |
| ConduitConnection(final String baseUrl) { |
| apiUrlBase = baseUrl.replaceAll("/+$", "") + "/api/"; |
| gson = new Gson(); |
| client = null; |
| } |
| |
| /** |
| * Gives a cached HttpClient |
| * <p/> |
| * If no cached HttpClient exists, a new one is spawned. |
| * |
| * @return the cached CloseableHttpClient |
| */ |
| private CloseableHttpClient getClient() { |
| if (client == null) { |
| log.trace("Creating new client connection"); |
| client = HttpClients.createDefault(); |
| } |
| return client; |
| } |
| |
| /** |
| * Call the given Conduit method without parameters |
| * |
| * @param method The name of the method that should get called |
| * @return The call's result, if there has been no error |
| * @throws Exception |
| */ |
| JsonElement call(String method) throws ConduitException { |
| return call(method, new HashMap<String, Object>()); |
| } |
| |
| /** |
| * Calls a conduit method with some parameters |
| * |
| * @param method The name of the method that should get called |
| * @param params A map of parameters to pass to the call |
| * @return The call's result, if there has been no error |
| * @throws Exception |
| */ |
| JsonElement call(String method, Map<String, Object> params) throws ConduitException { |
| String methodUrl = apiUrlBase + method; |
| |
| HttpPost httppost = new HttpPost(methodUrl); |
| |
| |
| String json = gson.toJson(params); |
| |
| log.trace("Calling phabricator method " + method |
| + " with the parameters " + json ); |
| httppost.setEntity(new StringEntity("params=" + json, StandardCharsets.UTF_8)); |
| |
| CloseableHttpResponse response; |
| try { |
| response = getClient().execute(httppost); |
| } catch (IOException e) { |
| throw new ConduitException("Could not execute Phabricator API call", e); |
| } |
| try { |
| log.trace("Phabricator HTTP response status: " + response.getStatusLine()); |
| HttpEntity entity = response.getEntity(); |
| String entityString; |
| try { |
| entityString = EntityUtils.toString(entity); |
| } catch (IOException e) { |
| throw new ConduitException("Could not read the API response", e); |
| } |
| |
| log.trace("Phabricator response " + entityString); |
| CallCapsule callCapsule = gson.fromJson(entityString, CallCapsule.class); |
| log.trace("callCapsule.result: " + callCapsule.getResult()); |
| log.trace("callCapsule.error_code: " + callCapsule.getErrorCode()); |
| log.trace("callCapsule.error_info: " + callCapsule.getErrorInfo()); |
| if (callCapsule.getErrorCode() != null |
| || callCapsule.getErrorInfo() != null) { |
| throw new ConduitErrorException(method, callCapsule.getErrorCode(), |
| callCapsule.getErrorInfo()); |
| } |
| return callCapsule.getResult(); |
| } finally { |
| try { |
| response.close(); |
| } catch (IOException e) { |
| throw new ConduitException("Could not close API response", e); |
| } |
| } |
| } |
| } |