How to use get_daemon_cmd method in autotest

Best Python code snippet using autotest_python

druid_node.py

Source:druid_node.py

...44        import params45        env.set_params(params)46        install_druid()47        self.configure(env, upgrade_type=upgrade_type)48        daemon_cmd = get_daemon_cmd(params, self.nodeType, "start")49        # Verify Database connection on Druid start50        if params.metadata_storage_type == 'mysql':51            if not params.jdbc_driver_jar or not os.path.isfile(52                    params.connector_download_dir + os.path.sep +53                    params.jdbc_driver_jar):54                path_to_jdbc = params.connector_download_dir + os.path.sep + "*"55                error_message = "Error! Sorry, but we can't find jdbc driver for mysql.So, db connection check can fail." + \56                                "Please run 'ambari-server setup --jdbc-db=mysql --jdbc-driver={path_to_jdbc} on server host.'"57                Logger.error(error_message)58            else:59                path_to_jdbc = params.connector_download_dir + os.path.sep + params.jdbc_driver_jar60            db_connection_check_command = format(61                "{params.java8_home}/bin/java -cp {params.check_db_connection_jar}:{path_to_jdbc} org.apache.ambari.server.DBConnectionVerification '{params.metadata_storage_url}' {params.metadata_storage_user} {params.metadata_storage_password!p} com.mysql.jdbc.Driver"62            )63        else:64            db_connection_check_command = None65        if db_connection_check_command:66            sudo.chmod(params.check_db_connection_jar, 0755)67            Execute(68                db_connection_check_command,69                tries=5,70                try_sleep=10,71                user=params.druid_user)72        pid_file = getPid(params, self.nodeType)73        process_id_exists_command = as_sudo([74            "test", "-f", pid_file75        ]) + " && " + as_sudo(["pgrep", "-F", pid_file])76        try:77            Execute(78                daemon_cmd,79                user=params.druid_user,80                not_if=process_id_exists_command,81            )82        except:83            show_logs(params.druid_log_dir, params.druid_user)84            raise85    def stop(self, env, upgrade_type=None):86        import params87        env.set_params(params)88        pid_file = getPid(params, self.nodeType)89        process_id_exists_command = as_sudo([90            "test", "-f", pid_file91        ]) + " && " + as_sudo(["pgrep", "-F", pid_file])92        daemon_cmd = get_daemon_cmd(params, self.nodeType, "stop")93        try:94            Execute(95                daemon_cmd,96                user=params.druid_user,97                only_if=process_id_exists_command,98            )99        except:100            show_logs(params.druid_log_dir, params.druid_user)101            raise102    def get_pid_files(self):103        import status_params104        return [getPid(status_params, self.nodeType)]105    def status(self, env):106        import status_params...

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