| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.apache.hadoop.hdds.scm.cli; |
| |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.TimeoutException; |
| |
| import org.apache.hadoop.hdds.cli.HddsVersionProvider; |
| import org.apache.hadoop.hdds.scm.client.ScmClient; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import picocli.CommandLine.Command; |
| import picocli.CommandLine.Option; |
| import picocli.CommandLine.Mixin; |
| |
| /** |
| * This is the handler that process safe mode wait command. |
| */ |
| @Command( |
| name = "wait", |
| description = "Wait until the scm is out from the safe mode.", |
| mixinStandardHelpOptions = true, |
| versionProvider = HddsVersionProvider.class) |
| public class SafeModeWaitSubcommand implements Callable<Void> { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(SafeModeWaitSubcommand.class); |
| |
| @Option(description = |
| "Define timeout (in second) to wait until (exit code 1) " |
| + "or until safemode is ended (exit code 0).", defaultValue = "30", |
| names = { "-t", "--timeout"}) |
| private long timeoutSeconds; |
| |
| private long startTestTime; |
| |
| @Mixin |
| private ScmOption scmOption; |
| |
| @Override |
| public Void call() throws Exception { |
| startTestTime = System.currentTimeMillis(); |
| |
| while (getRemainingTimeInSec() > 0) { |
| try (ScmClient scmClient = scmOption.createScmClient()) { |
| long remainingTime; |
| do { |
| if (!scmClient.inSafeMode()) { |
| LOG.info("SCM is out of safe mode."); |
| return null; |
| } |
| |
| remainingTime = getRemainingTimeInSec(); |
| |
| if (remainingTime > 0) { |
| LOG.info( |
| "SCM is in safe mode. Will retry in 1 sec. Remaining time " |
| + "(sec): {}", |
| remainingTime); |
| Thread.sleep(1000); |
| } else { |
| LOG.info("SCM is in safe mode. No more retries."); |
| } |
| } while (remainingTime > 0); |
| } catch (Exception ex) { |
| LOG.info( |
| "SCM is not available (yet?). Error is {}. Will retry in 1 sec. " |
| + "Remaining time (sec): {}", |
| ex.getMessage(), getRemainingTimeInSec()); |
| Thread.sleep(1000); |
| } |
| } |
| throw new TimeoutException( |
| "Safe mode is not ended within the timeout period."); |
| } |
| |
| private long getRemainingTimeInSec() { |
| return timeoutSeconds - (System.currentTimeMillis() - startTestTime) / 1000; |
| } |
| } |