def run(self):
        from config import initialize_logging
        initialize_logging('windows_collector')
        log.debug("Windows Service - Starting collector")
        set_win32_requests_ca_bundle_path()
        emitters = self.get_emitters()
        systemStats = get_system_stats()
        self.collector = Collector(self.config, emitters, systemStats, self.hostname)

        in_developer_mode = self.config.get('developer_mode')

        # In developer mode, the number of runs to be included in a single collector profile
        collector_profile_interval = self.config.get('collector_profile_interval',
                                                     DEFAULT_COLLECTOR_PROFILE_INTERVAL)
        profiled = False
        collector_profiled_runs = 0

        # Load the checks.d checks
        checksd = load_check_directory(self.config, self.hostname)

        # Main agent loop will run until interrupted
        while self.running:
            if self._heartbeat:
                self._heartbeat.send(0)

            if in_developer_mode and not profiled:
                try:
                    profiler = AgentProfiler()
                    profiler.enable_profiling()
                    profiled = True
                except Exception as e:
                    log.warn("Cannot enable profiler: %s" % str(e))

            self.collector.run(checksd=checksd)

            if profiled:
                if collector_profiled_runs >= collector_profile_interval:
                    try:
                        profiler.disable_profiling()
                        profiled = False
                        collector_profiled_runs = 0
                    except Exception as e:
                        log.warn("Cannot disable profiler: %s" % str(e))
                else:
                    collector_profiled_runs += 1

            time.sleep(self.config['check_freq'])

def main():
    options, args = get_parsed_args()
    agentConfig = get_config(options=options)
    autorestart = agentConfig.get('autorestart', False)
    hostname = get_hostname(agentConfig)
    in_developer_mode = agentConfig.get('developer_mode')

    COMMANDS_AGENT = [
        'start',
        'stop',
        'restart',
        'status',
        'foreground',
    ]

    COMMANDS_NO_AGENT = [
        'info',
        'check',
        'configcheck',
        'jmx',
        'flare',
    ]

    COMMANDS = COMMANDS_AGENT + COMMANDS_NO_AGENT

    if len(args) < 1:
        sys.stderr.write("Usage: %s %s\n" % (sys.argv[0], "|".join(COMMANDS)))
        return 2

    command = args[0]
    if command not in COMMANDS:
        sys.stderr.write("Unknown command: %s\n" % command)
        return 3

    # TODO: actually kill the start/stop/restart/status command for 5.11
    if command in ['start', 'stop', 'restart', 'status'] and not in_developer_mode:
        logging.error('Please use supervisor to manage the agent')
        return 1

    if command in COMMANDS_AGENT:
        agent = Agent(PidFile(PID_NAME, PID_DIR).get_path(), autorestart, in_developer_mode=in_developer_mode)

    if 'start' == command:
        log.info('Start daemon')
        agent.start()

    elif 'stop' == command:
        log.info('Stop daemon')
        agent.stop()

    elif 'restart' == command:
        log.info('Restart daemon')
        agent.restart()

    elif 'status' == command:
        agent.status()

    elif 'info' == command:
        return Agent.info(verbose=options.verbose)

    elif 'foreground' == command:
        log.info('Agent version %s' % get_version())
        if autorestart:
            # Set-up the supervisor callbacks and fork it.
            logging.info('Running Agent with auto-restart ON')

            def child_func():
                agent.start(foreground=True)

            def parent_func():
                agent.start_event = False

            AgentSupervisor.start(parent_func, child_func)
        else:
            # Run in the standard foreground.
            agent.start(foreground=True)

    elif 'check' == command:
        if len(args) < 2:
            sys.stderr.write(
                "Usage: %s check <check_name> [check_rate]\n"
                "Add check_rate as last argument to compute rates\n"
                % sys.argv[0]
            )
            return 1

        check_name = args[1]
        try:
            import checks.collector
            # Try the old-style check first
            print getattr(checks.collector, check_name)(log).check(agentConfig)
        except Exception:
            # If not an old-style check, try checks.d
            checks = load_check_directory(agentConfig, hostname)
            for check in checks['initialized_checks']:
                if check.name == check_name:
                    if in_developer_mode:
                        check.run = AgentProfiler.wrap_profiling(check.run)

                    cs = Collector.run_single_check(check, verbose=True)
#.........这里部分代码省略.........

    def run(self, config=None):
        """Main loop of the collector"""

        # Gracefully exit on sigterm.
        signal.signal(signal.SIGTERM, self._handle_sigterm)

        # A SIGUSR1 signals an exit with an autorestart
        signal.signal(signal.SIGUSR1, self._handle_sigusr1)

        # Handle Keyboard Interrupt
        signal.signal(signal.SIGINT, self._handle_sigterm)

        # A SIGHUP signals a configuration reload
        signal.signal(signal.SIGHUP, self._handle_sighup)

        # Save the agent start-up stats.
        CollectorStatus().persist()

        # Intialize the collector.
        if not config:
            config = get_config(parse_args=True)

        self._agentConfig = self._set_agent_config_hostname(config)
        hostname = get_hostname(self._agentConfig)
        systemStats = get_system_stats(
            proc_path=self._agentConfig.get('procfs_path', '/proc').rstrip('/')
        )
        emitters = self._get_emitters()

        # Initialize service discovery
        if self._agentConfig.get('service_discovery'):
            self.sd_backend = get_sd_backend(self._agentConfig)

        if _is_affirmative(self._agentConfig.get('sd_jmx_enable')):
            pipe_path = get_jmx_pipe_path()
            if Platform.is_windows():
                pipe_name = pipe_path.format(pipename=SD_PIPE_NAME)
            else:
                pipe_name = os.path.join(pipe_path, SD_PIPE_NAME)

            if os.access(pipe_path, os.W_OK):
                if not os.path.exists(pipe_name):
                    os.mkfifo(pipe_name)
                self.sd_pipe = os.open(pipe_name, os.O_RDWR) # RW to avoid blocking (will only W)

                # Initialize Supervisor proxy
                self.supervisor_proxy = self._get_supervisor_socket(self._agentConfig)
            else:
                log.debug('Unable to create pipe in temporary directory. JMX service discovery disabled.')

        # Load the checks.d checks
        self._checksd = load_check_directory(self._agentConfig, hostname)

        # Load JMX configs if available
        if self._jmx_service_discovery_enabled:
            jmx_sd_configs = generate_jmx_configs(self._agentConfig, hostname)
            if jmx_sd_configs:
                self._submit_jmx_service_discovery(jmx_sd_configs)

        # Initialize the Collector
        self.collector = Collector(self._agentConfig, emitters, systemStats, hostname)

        # In developer mode, the number of runs to be included in a single collector profile
        try:
            self.collector_profile_interval = int(
                self._agentConfig.get('collector_profile_interval', DEFAULT_COLLECTOR_PROFILE_INTERVAL))
        except ValueError:
            log.warn('collector_profile_interval is invalid. '
                     'Using default value instead (%s).' % DEFAULT_COLLECTOR_PROFILE_INTERVAL)
            self.collector_profile_interval = DEFAULT_COLLECTOR_PROFILE_INTERVAL

        # Configure the watchdog.
        self.check_frequency = int(self._agentConfig['check_freq'])
        watchdog = self._get_watchdog(self.check_frequency)

        # Initialize the auto-restarter
        self.restart_interval = int(self._agentConfig.get('restart_interval', RESTART_INTERVAL))
        self.agent_start = time.time()

        self.allow_profiling = self._agentConfig.get('allow_profiling', True)

        profiled = False
        collector_profiled_runs = 0

        # Run the main loop.
        while self.run_forever:
            # Setup profiling if necessary
            if self.allow_profiling and self.in_developer_mode and not profiled:
                try:
                    profiler = AgentProfiler()
                    profiler.enable_profiling()
                    profiled = True
                except Exception as e:
                    log.warn("Cannot enable profiler: %s" % str(e))

            if self.reload_configs_flag:
                if isinstance(self.reload_configs_flag, set):
                    self.reload_configs(checks_to_reload=self.reload_configs_flag)
                else:
                    self.reload_configs()
#.........这里部分代码省略.........

def main():
    options, args = get_parsed_args()
    agentConfig = get_config(options=options)
    autorestart = agentConfig.get("autorestart", False)
    hostname = get_hostname(agentConfig)
    in_developer_mode = agentConfig.get("developer_mode")
    COMMANDS_AGENT = ["start", "stop", "restart", "status", "foreground"]

    COMMANDS_NO_AGENT = ["info", "check", "configcheck", "jmx", "flare"]

    COMMANDS = COMMANDS_AGENT + COMMANDS_NO_AGENT

    if len(args) < 1:
        sys.stderr.write("Usage: %s %s\n" % (sys.argv[0], "|".join(COMMANDS)))
        return 2

    command = args[0]
    if command not in COMMANDS:
        sys.stderr.write("Unknown command: %s\n" % command)
        return 3

    # Deprecation notice
    if command not in DD_AGENT_COMMANDS:
        # Will become an error message and exit after deprecation period
        from utils.deprecations import deprecate_old_command_line_tools

        deprecate_old_command_line_tools()

    if command in COMMANDS_AGENT:
        agent = Agent(PidFile(PID_NAME, PID_DIR).get_path(), autorestart, in_developer_mode=in_developer_mode)

    if command in START_COMMANDS:
        log.info("Agent version %s" % get_version())

    if "start" == command:
        log.info("Start daemon")
        agent.start()

    elif "stop" == command:
        log.info("Stop daemon")
        agent.stop()

    elif "restart" == command:
        log.info("Restart daemon")
        agent.restart()

    elif "status" == command:
        agent.status()

    elif "info" == command:
        return Agent.info(verbose=options.verbose)

    elif "foreground" == command:
        logging.info("Running in foreground")
        if autorestart:
            # Set-up the supervisor callbacks and fork it.
            logging.info("Running Agent with auto-restart ON")

            def child_func():
                agent.start(foreground=True)

            def parent_func():
                agent.start_event = False

            AgentSupervisor.start(parent_func, child_func)
        else:
            # Run in the standard foreground.
            agent.start(foreground=True)

    elif "check" == command:
        if len(args) < 2:
            sys.stderr.write(
                "Usage: %s check <check_name> [check_rate]\n"
                "Add check_rate as last argument to compute rates\n" % sys.argv[0]
            )
            return 1

        check_name = args[1]
        try:
            import checks.collector

            # Try the old-style check first
            print getattr(checks.collector, check_name)(log).check(agentConfig)
        except Exception:
            # If not an old-style check, try checks.d
            checks = load_check_directory(agentConfig, hostname)
            for check in checks["initialized_checks"]:
                if check.name == check_name:
                    if in_developer_mode:
                        check.run = AgentProfiler.wrap_profiling(check.run)

                    cs = Collector.run_single_check(check, verbose=True)
                    print CollectorStatus.render_check_status(cs)

                    if len(args) == 3 and args[2] == "check_rate":
                        print "Running 2nd iteration to capture rate metrics"
                        time.sleep(1)
                        cs = Collector.run_single_check(check, verbose=True)
                        print CollectorStatus.render_check_status(cs)

#.........这里部分代码省略.........

    def run(self, config=None):
        """Main loop of the collector"""

        # Gracefully exit on sigterm.
        signal.signal(signal.SIGTERM, self._handle_sigterm)

        # A SIGUSR1 signals an exit with an autorestart
        signal.signal(signal.SIGUSR1, self._handle_sigusr1)

        # Handle Keyboard Interrupt
        signal.signal(signal.SIGINT, self._handle_sigterm)

        # A SIGHUP signals a configuration reload
        signal.signal(signal.SIGHUP, self._handle_sighup)

        # Save the agent start-up stats.
        CollectorStatus().persist()

        # Intialize the collector.
        if not config:
            config = get_config(parse_args=True)

        self._agentConfig = self._set_agent_config_hostname(config)
        hostname = get_hostname(self._agentConfig)
        systemStats = get_system_stats()
        emitters = self._get_emitters()

        # Initialize service discovery
        if self._agentConfig.get("service_discovery"):
            self.sd_backend = get_sd_backend(self._agentConfig)

        # Load the checks.d checks
        self._checksd = load_check_directory(self._agentConfig, hostname)

        # Initialize the Collector
        self.collector = Collector(self._agentConfig, emitters, systemStats, hostname)

        # In developer mode, the number of runs to be included in a single collector profile
        self.collector_profile_interval = self._agentConfig.get(
            "collector_profile_interval", DEFAULT_COLLECTOR_PROFILE_INTERVAL
        )

        # Configure the watchdog.
        self.check_frequency = int(self._agentConfig["check_freq"])
        watchdog = self._get_watchdog(self.check_frequency)

        # Initialize the auto-restarter
        self.restart_interval = int(self._agentConfig.get("restart_interval", RESTART_INTERVAL))
        self.agent_start = time.time()

        profiled = False
        collector_profiled_runs = 0

        # Run the main loop.
        while self.run_forever:
            log.debug("Found {num_checks} checks".format(num_checks=len(self._checksd["initialized_checks"])))

            # Setup profiling if necessary
            if self.in_developer_mode and not profiled:
                try:
                    profiler = AgentProfiler()
                    profiler.enable_profiling()
                    profiled = True
                except Exception as e:
                    log.warn("Cannot enable profiler: %s" % str(e))

            # Do the work.
            self.collector.run(
                checksd=self._checksd, start_event=self.start_event, configs_reloaded=self.configs_reloaded
            )

            # This flag is used to know if the check configs have been reloaded at the current
            # run of the agent yet or not. It's used by the collector to know if it needs to
            # look for the AgentMetrics check and pop it out.
            # See: https://github.com/DataDog/dd-agent/blob/5.6.x/checks/collector.py#L265-L272
            self.configs_reloaded = False

            # Look for change in the config template store.
            # The self.sd_backend.reload_check_configs flag is set
            # to True if a config reload is needed.
            if (
                self._agentConfig.get("service_discovery")
                and self.sd_backend
                and not self.sd_backend.reload_check_configs
            ):
                try:
                    self.sd_backend.reload_check_configs = get_config_store(self._agentConfig).crawl_config_template()
                except Exception as e:
                    log.warn("Something went wrong while looking for config template changes: %s" % str(e))

            # Check if we should run service discovery
            # The `reload_check_configs` flag can be set through the docker_daemon check or
            # using ConfigStore.crawl_config_template
            if self._agentConfig.get("service_discovery") and self.sd_backend and self.sd_backend.reload_check_configs:
                self.reload_configs()
                self.configs_reloaded = True
                self.sd_backend.reload_check_configs = False

            if profiled:
                if collector_profiled_runs >= self.collector_profile_interval:
#.........这里部分代码省略.........

    def run(self, config=None):
        """Main loop of the collector"""

        # Gracefully exit on sigterm.
        signal.signal(signal.SIGTERM, self._handle_sigterm)

        # A SIGUSR1 signals an exit with an autorestart
        signal.signal(signal.SIGUSR1, self._handle_sigusr1)

        # Handle Keyboard Interrupt
        signal.signal(signal.SIGINT, self._handle_sigterm)

        # A SIGHUP signals a configuration reload
        signal.signal(signal.SIGHUP, self._handle_sighup)

        # Save the agent start-up stats.
        CollectorStatus().persist()

        # Intialize the collector.
        if not config:
            config = get_config(parse_args=True)

        self._agentConfig = self._set_agent_config_hostname(config)
        hostname = get_hostname(self._agentConfig)
        systemStats = get_system_stats()
        emitters = self._get_emitters()

        # Load the checks.d checks
        self._checksd = load_check_directory(self._agentConfig, hostname)

        # Initialize the Collector
        self.collector = Collector(self._agentConfig, emitters, systemStats, hostname)

        # In developer mode, the number of runs to be included in a single collector profile
        self.collector_profile_interval = self._agentConfig.get('collector_profile_interval',
                                                                DEFAULT_COLLECTOR_PROFILE_INTERVAL)

        # Configure the watchdog.
        self.check_frequency = int(self._agentConfig['check_freq'])
        watchdog = self._get_watchdog(self.check_frequency)

        # Initialize the auto-restarter
        self.restart_interval = int(self._agentConfig.get('restart_interval', RESTART_INTERVAL))
        self.agent_start = time.time()

        profiled = False
        collector_profiled_runs = 0

        # Run the main loop.
        while self.run_forever:
            log.debug("Found {num_checks} checks".format(num_checks=len(self._checksd['initialized_checks'])))

            # Setup profiling if necessary
            if self.in_developer_mode and not profiled:
                try:
                    profiler = AgentProfiler()
                    profiler.enable_profiling()
                    profiled = True
                except Exception as e:
                    log.warn("Cannot enable profiler: %s" % str(e))

            # Do the work.
            self.collector.run(checksd=self._checksd,
                               start_event=self.start_event,
                               configs_reloaded=self.configs_reloaded)
            if self.configs_reloaded:
                self.configs_reloaded = False
            if profiled:
                if collector_profiled_runs >= self.collector_profile_interval:
                    try:
                        profiler.disable_profiling()
                        profiled = False
                        collector_profiled_runs = 0
                    except Exception as e:
                        log.warn("Cannot disable profiler: %s" % str(e))

            # Check if we should restart.
            if self.autorestart and self._should_restart():
                self._do_restart()

            # Only plan for next loop if we will continue, otherwise exit quickly.
            if self.run_forever:
                if watchdog:
                    watchdog.reset()
                if profiled:
                    collector_profiled_runs += 1
                log.info("Sleeping for {0} seconds".format(self.check_frequency))
                time.sleep(self.check_frequency)

        # Now clean-up.
        try:
            CollectorStatus.remove_latest_status()
        except Exception:
            pass

        # Explicitly kill the process, because it might be running as a daemon.
        log.info("Exiting. Bye bye.")
        sys.exit(0)

#.........这里部分代码省略.........
        log.info('Restart daemon')
        agent.restart()

    elif 'status' == command:
        agent.status()

    elif 'info' == command:
        return Agent.info(verbose=options.verbose)

    elif 'foreground' == command:
        logging.info('Running in foreground')
        if autorestart:
            # Set-up the supervisor callbacks and fork it.
            logging.info('Running Agent with auto-restart ON')

            def child_func():
                agent.start(foreground=True)

            def parent_func():
                agent.start_event = False

            AgentSupervisor.start(parent_func, child_func)
        else:
            # Run in the standard foreground.
            agent.start(foreground=True)

    elif 'check' == command:
        if len(args) < 2:
            sys.stderr.write(
                "Usage: %s check <check_name> [check_rate]\n"
                "Add check_rate as last argument to compute rates\n"
                % sys.argv[0]
            )
            return 1

        check_name = args[1]
        try:
            import checks.collector
            # Try the old-style check first
            print getattr(checks.collector, check_name)(log).check(agentConfig)
        except Exception:
            # If not an old-style check, try checks.d
            checks = load_check_directory(agentConfig, hostname)
            for check in checks['initialized_checks']:
                if check.name == check_name:
                    if in_developer_mode:
                        check.run = AgentProfiler.wrap_profiling(check.run)

                    cs = Collector.run_single_check(check, verbose=True)
                    print CollectorStatus.render_check_status(cs)

                    if len(args) == 3 and args[2] == 'check_rate':
                        print "Running 2nd iteration to capture rate metrics"
                        time.sleep(1)
                        cs = Collector.run_single_check(check, verbose=True)
                        print CollectorStatus.render_check_status(cs)

                    check.stop()

    elif 'configcheck' == command or 'configtest' == command:
        configcheck()

    elif 'jmx' == command:
        if len(args) < 2 or args[1] not in JMX_LIST_COMMANDS.keys():
            print "#" * 80
            print "JMX tool to be used to help configuring your JMX checks."
            print "See http://docs.datadoghq.com/integrations/java/ for more information"
            print "#" * 80
            print "\n"
            print "You have to specify one of the following commands:"
            for command, desc in JMX_LIST_COMMANDS.iteritems():
                print "      - %s [OPTIONAL: LIST OF CHECKS]: %s" % (command, desc)
            print "Example: sudo /etc/init.d/datadog-agent jmx list_matching_attributes tomcat jmx solr"
            print "\n"

        else:
            jmx_command = args[1]
            checks_list = args[2:]
            confd_directory = get_confd_path(get_os())

            jmx_process = JMXFetch(confd_directory, agentConfig)
            jmx_process.configure()
            should_run = jmx_process.should_run()

            if should_run:
                jmx_process.run(jmx_command, checks_list, reporter="console")
            else:
                print "Couldn't find any valid JMX configuration in your conf.d directory: %s" % confd_directory
                print "Have you enabled any JMX check ?"
                print "If you think it's not normal please get in touch with Datadog Support"

    elif 'flare' == command:
        Flare.check_user_rights()
        case_id = int(args[1]) if len(args) > 1 else None
        f = Flare(True, case_id)
        f.collect()
        try:
            f.upload()
        except Exception, e:
            print 'The upload failed:\n{0}'.format(str(e))

#.........这里部分代码省略.........
    ]

    COMMANDS = COMMANDS_AGENT + COMMANDS_NO_AGENT

    if len(args) < 1:
        sys.stderr.write("Usage: %s %s\n" % (sys.argv[0], "|".join(COMMANDS)))
        return 2

    command = args[0]
    if command not in COMMANDS:
        sys.stderr.write("Unknown command: %s\n" % command)
        return 3

    # Deprecation notice
    if command not in DD_AGENT_COMMANDS:
        # Will become an error message and exit after deprecation period
        from utils.deprecations import deprecate_old_command_line_tools
        deprecate_old_command_line_tools()

    if command in COMMANDS_AGENT:
        agent = Agent(PidFile('sd-agent').get_path(), autorestart, in_developer_mode=in_developer_mode)

    if command in START_COMMANDS:
        log.info('Agent version %s' % get_version())

    if 'start' == command:
        log.info('Start daemon')
        agent.start()

    elif 'stop' == command:
        log.info('Stop daemon')
        agent.stop()

    elif 'restart' == command:
        log.info('Restart daemon')
        agent.restart()

    elif 'status' == command:
        agent.status()

    elif 'info' == command:
        return Agent.info(verbose=options.verbose)

    elif 'foreground' == command:
        logging.info('Running in foreground')
        if autorestart:
            # Set-up the supervisor callbacks and fork it.
            logging.info('Running Agent with auto-restart ON')

            def child_func():
                agent.start(foreground=True)

            def parent_func():
                agent.start_event = False

            AgentSupervisor.start(parent_func, child_func)
        else:
            # Run in the standard foreground.
            agent.start(foreground=True)

    elif 'check' == command:
        if len(args) < 2:
            sys.stderr.write(
                "Usage: %s check <check_name> [check_rate]\n"
                "Add check_rate as last argument to compute rates\n"
                % sys.argv[0]
            )
            return 1

        check_name = args[1]
        try:
            import checks.collector
            # Try the old-style check first
            print getattr(checks.collector, check_name)(log).check(agentConfig)
        except Exception:
            # If not an old-style check, try checks.d
            checks = load_check_directory(agentConfig, hostname)
            for check in checks['initialized_checks']:
                if check.name == check_name:
                    if in_developer_mode:
                        check.run = AgentProfiler.wrap_profiling(check.run)

                    cs = Collector.run_single_check(check, verbose=True)
                    print CollectorStatus.render_check_status(cs)

                    if len(args) == 3 and args[2] == 'check_rate':
                        print "Running 2nd iteration to capture rate metrics"
                        time.sleep(1)
                        cs = Collector.run_single_check(check, verbose=True)
                        print CollectorStatus.render_check_status(cs)

                    check.stop()

    elif 'configcheck' == command or 'configtest' == command:
        configcheck()

    elif 'jmx' == command:
        jmx_command(args[1:], agentConfig)

    return 0