| // Copyright (C) 2019 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.healthcheck.api; |
| |
| import com.google.gerrit.extensions.restapi.*; |
| import com.google.gerrit.server.config.ConfigResource; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import com.googlesource.gerrit.plugins.healthcheck.HealthCheckConfig; |
| import com.googlesource.gerrit.plugins.healthcheck.check.GlobalHealthCheck; |
| import com.googlesource.gerrit.plugins.healthcheck.check.HealthCheck; |
| import com.googlesource.gerrit.plugins.healthcheck.check.HealthCheck.Result; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Map; |
| import javax.servlet.http.HttpServletResponse; |
| |
| @Singleton |
| public class HealthCheckStatusEndpoint implements RestReadView<ConfigResource> { |
| |
| private final GlobalHealthCheck healthChecks; |
| |
| private final String failedFileFlagPath; |
| |
| @Inject |
| public HealthCheckStatusEndpoint(GlobalHealthCheck healthChecks, HealthCheckConfig config) { |
| this.healthChecks = healthChecks; |
| this.failedFileFlagPath = config.getFailFileFlagPath(); |
| } |
| |
| @Override |
| public Response<Map<String, Object>> apply(ConfigResource resource) |
| throws AuthException, BadRequestException, ResourceConflictException, Exception { |
| if (failFlagFileExists()) { |
| return Response.withStatusCode( |
| HttpServletResponse.SC_INTERNAL_SERVER_ERROR, Map.of("reason", "Fail Flag File exists")); |
| } |
| HealthCheck.StatusSummary globalHealthCheckStatus = healthChecks.run(); |
| |
| Map<String, Object> result = globalHealthCheckStatus.subChecks; |
| result.put("ts", globalHealthCheckStatus.ts); |
| result.put("elapsed", globalHealthCheckStatus.elapsed); |
| return Response.withStatusCode(getHTTPResultCode(globalHealthCheckStatus), result); |
| } |
| |
| private int getHTTPResultCode(HealthCheck.StatusSummary checkStatus) { |
| return checkStatus.result == Result.FAILED |
| ? HttpServletResponse.SC_INTERNAL_SERVER_ERROR |
| : HttpServletResponse.SC_OK; |
| } |
| |
| private boolean failFlagFileExists() throws IOException { |
| File file = new File(failedFileFlagPath); |
| try (InputStream targetStream = new FileInputStream(file)) { |
| return true; |
| } catch (Exception e) { |
| return false; |
| } |
| } |
| } |