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.mysql;
  
  import org.apache.bigtop.manager.common.constants.MessageConstants;
  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 lombok.extern.slf4j.Slf4j;
  
  import java.io.IOException;
  import java.text.MessageFormat;
  import java.util.Properties;
  
  @Slf4j
  @AutoService(Script.class)
  public class MySQLServerScript 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 MySQLSetup.configure(params);
      }
  
      @Override
      public ShellResult init(Params params) {
          String user = params.user();
          String binDir = params.serviceHome() + "/bin";
          String confPath = params.serviceHome() + "/my.cnf";
          runCommand(binDir + "/mysqld --defaults-file=" + confPath + " --initialize-insecure", user);
          return ShellResult.success();
      }
  
      @Override
      public ShellResult start(Params params) {
          configure(params);
          MySQLParams mysqlParams = (MySQLParams) params;
  
          String cmd = getStartCommand(params);
          try {
              ShellResult shellResult = LinuxOSUtils.sudoExecCmd(cmd, mysqlParams.user());
              if (shellResult.getExitCode() != 0) {
                  throw new StackException("Failed to start MySQL: {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 prepare(Params params) {
          MySQLParams mysqlParams = (MySQLParams) params;
          String user = params.user();
          String binDir = params.serviceHome() + "/bin";
          String confPath = params.serviceHome() + "/my.cnf";
          String password = mysqlParams.getRootPassword();
          runCommand(
                  MessageFormat.format(
                          "{0}/mysql --defaults-file={1} -u root -e \"ALTER USER 'root'@'localhost' IDENTIFIED BY ''{2}'';\"",
                          binDir, confPath, password),
                  user);
          runCommand(
                  MessageFormat.format(
                          "{0}/mysql --defaults-file={1} -u root -p''{2}'' -e \"CREATE USER ''root''@''%'' IDENTIFIED BY ''{2}'';\"",
                          binDir, confPath, password),
                  user);
          runCommand(
                  MessageFormat.format(
                          "{0}/mysql --defaults-file={1} -u root -p''{2}'' -e \"GRANT ALL PRIVILEGES ON *.* TO ''root''@''%'' WITH GRANT OPTION;\"",
                          binDir, confPath, password),
                  user);
          runCommand(
                  MessageFormat.format(
                          "{0}/mysql --defaults-file={1} -u root -p''{2}'' -e \"FLUSH PRIVILEGES;\"",
                          binDir, confPath, password),
                  user);
          return ShellResult.success();
      }
  
      @Override
      public ShellResult stop(Params params) {
          MySQLParams mysqlParams = (MySQLParams) params;
          String cmd = getStopCommand(params);
          try {
              return LinuxOSUtils.sudoExecCmd(cmd, mysqlParams.user());
          } catch (IOException e) {
              throw new StackException(e);
          }
      }
  
      @Override
      public ShellResult status(Params params) {
          MySQLParams mysqlParams = (MySQLParams) params;
          return LinuxOSUtils.checkProcess(mysqlParams.getMysqlPidDir() + "/mysqld.pid");
      }
  
      private String getStartCommand(Params params) {
          MySQLParams mysqlParams = (MySQLParams) params;
          return MessageFormat.format("nohup {0}/bin/mysqld_safe > /dev/null 2>&1 &", mysqlParams.serviceHome());
      }
  
      private String getStopCommand(Params params) {
          MySQLParams mysqlParams = (MySQLParams) params;
          return MessageFormat.format(
                  "{0}/bin/mysqladmin -u root -p''{1}'' shutdown",
                  mysqlParams.serviceHome(), mysqlParams.getRootPassword());
      }
  
      private void runCommand(String cmd, String user) {
          try {
              ShellResult shellResult = LinuxOSUtils.sudoExecCmd(cmd, user);
              if (shellResult.getExitCode() != MessageConstants.SUCCESS_CODE) {
                  throw new StackException(shellResult.getErrMsg());
              }
          } catch (IOException e) {
              throw new StackException(e);
          }
      }
  
      @Override
      public String getComponentName() {
          return "mysql_server";
      }
  }
  