| // Copyright (C) 2015 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.ericsson.gerrit.plugins.highavailability.forwarder.rest; |
| |
| import com.ericsson.gerrit.plugins.highavailability.forwarder.rest.HttpResponseHandler.HttpResult; |
| import com.ericsson.gerrit.plugins.highavailability.peers.PeerInfo; |
| import com.google.common.base.Supplier; |
| import com.google.common.net.MediaType; |
| import com.google.gerrit.server.events.SupplierSerializer; |
| import com.google.gson.Gson; |
| import com.google.gson.GsonBuilder; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import java.io.IOException; |
| import java.net.URI; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Optional; |
| import org.apache.http.client.methods.HttpDelete; |
| import org.apache.http.client.methods.HttpEntityEnclosingRequestBase; |
| import org.apache.http.client.methods.HttpPost; |
| import org.apache.http.entity.StringEntity; |
| import org.apache.http.impl.client.CloseableHttpClient; |
| |
| class HttpSession { |
| private final CloseableHttpClient httpClient; |
| private final Provider<Optional<PeerInfo>> peerInfo; |
| private final Gson gson = |
| new GsonBuilder().registerTypeAdapter(Supplier.class, new SupplierSerializer()).create(); |
| |
| @Inject |
| HttpSession(CloseableHttpClient httpClient, Provider<Optional<PeerInfo>> peerInfo) { |
| this.httpClient = httpClient; |
| this.peerInfo = peerInfo; |
| } |
| |
| HttpResult post(String endpoint) throws IOException { |
| return post(endpoint, null); |
| } |
| |
| HttpResult post(String endpoint, Object content) throws IOException { |
| HttpPost post = new HttpPost(getPeerInfo().getDirectUrl() + endpoint); |
| setContent(post, content); |
| return httpClient.execute(post, new HttpResponseHandler()); |
| } |
| |
| HttpResult delete(String endpoint) throws IOException { |
| return delete(endpoint, null); |
| } |
| |
| private PeerInfo getPeerInfo() throws PeerInfoNotAvailableException { |
| PeerInfo info = peerInfo.get().orElse(null); |
| if (info == null) { |
| throw new PeerInfoNotAvailableException(); |
| } |
| return info; |
| } |
| |
| HttpResult delete(String endpoint, Object content) throws IOException { |
| HttpDeleteWithBody delete = new HttpDeleteWithBody(getPeerInfo().getDirectUrl() + endpoint); |
| setContent(delete, content); |
| return httpClient.execute(delete, new HttpResponseHandler()); |
| } |
| |
| private void setContent(HttpEntityEnclosingRequestBase request, Object content) { |
| if (content != null) { |
| request.addHeader("Content-Type", MediaType.JSON_UTF_8.toString()); |
| request.setEntity(new StringEntity(jsonEncode(content), StandardCharsets.UTF_8)); |
| } |
| } |
| |
| private String jsonEncode(Object content) { |
| if (content instanceof String) { |
| return (String) content; |
| } |
| return gson.toJson(content); |
| } |
| |
| private class HttpDeleteWithBody extends HttpEntityEnclosingRequestBase { |
| @Override |
| public String getMethod() { |
| return HttpDelete.METHOD_NAME; |
| } |
| |
| private HttpDeleteWithBody(String uri) { |
| setURI(URI.create(uri)); |
| } |
| } |
| } |