content: /*
   * 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
   *
   *    https://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.apache.bigtop.manager.stack.infra.v1_0_0.prometheus;
  
  import org.apache.bigtop.manager.common.shell.ShellResult;
  import org.apache.bigtop.manager.stack.core.exception.StackException;
  import org.apache.bigtop.manager.stack.core.spi.param.Params;
  import org.apache.bigtop.manager.stack.core.spi.script.AbstractServerScript;
  import org.apache.bigtop.manager.stack.core.spi.script.Script;
  import org.apache.bigtop.manager.stack.core.utils.linux.LinuxOSUtils;
  
  import com.google.auto.service.AutoService;
  
  import java.text.MessageFormat;
  import java.util.Properties;
  
  @AutoService(Script.class)
  public class PrometheusServerScript extends AbstractServerScript {
  
      @Override
      public ShellResult add(Params params) {
          Properties properties = new Properties();
          properties.setProperty(PROPERTY_KEY_SKIP_LEVELS, "1");
  
          return super.add(params, properties);
      }
  
      @Override
      public ShellResult configure(Params params) {
          super.configure(params);
  
          return PrometheusSetup.config(params);
      }
  
      @Override
      public ShellResult start(Params params) {
          configure(params);
          PrometheusParams prometheusParams = (PrometheusParams) params;
          String cmd = MessageFormat.format(
                  "nohup {0}/prometheus --config.file={1}/prometheus.yml --web.listen-address={2} --storage.tsdb.path={0}/data > {0}/nohup.out 2>&1 &",
                  prometheusParams.serviceHome(), prometheusParams.serviceHome(), prometheusParams.listenAddress());
          try {
              ShellResult shellResult = LinuxOSUtils.sudoExecCmd(cmd, prometheusParams.user());
              if (shellResult.getExitCode() != 0) {
                  throw new StackException("Failed to start Prometheus: {0}", shellResult.getErrMsg());
              }
              long startTime = System.currentTimeMillis();
              long maxWaitTime = 5000;
              long pollInterval = 500;
  
              while (System.currentTimeMillis() - startTime < maxWaitTime) {
                  ShellResult statusResult = status(params);
                  if (statusResult.getExitCode() == 0) {
                      return statusResult;
                  }
                  Thread.sleep(pollInterval);
              }
              return status(params);
          } catch (Exception e) {
              throw new StackException(e);
          }
      }
  
      @Override
      public ShellResult stop(Params params) {
          PrometheusParams prometheusParams = (PrometheusParams) params;
          String cmd = MessageFormat.format("pkill -f {0}/prometheus", prometheusParams.serviceHome());
          try {
              return LinuxOSUtils.sudoExecCmd(cmd, prometheusParams.user());
          } catch (Exception e) {
              throw new StackException(e);
          }
      }
  
      @Override
      public ShellResult status(Params params) {
          PrometheusParams prometheusParams = (PrometheusParams) params;
          String cmd = MessageFormat.format("pgrep -f {0}/prometheus", prometheusParams.serviceHome());
          try {
              ShellResult result = LinuxOSUtils.execCmd(cmd);
              if (result.getExitCode() == 0) {
                  return ShellResult.success();
              } else {
                  return new ShellResult(-1, "", "Prometheus is not running");
              }
          } catch (Exception e) {
              throw new StackException(e);
          }
      }
  
      @Override
      public String getComponentName() {
          return "prometheus_server";
      }
  }
  