def __init__(self, agentConfig, emitters, systemStats, hostname):
        self.emit_duration = None
        self.agentConfig = agentConfig
        self.hostname = hostname
        # system stats is generated by config.get_system_stats
        self.agentConfig['system_stats'] = systemStats
        # agent config is used during checks, system_stats can be accessed through the config
        self.os = get_os()
        self.plugins = None
        self.emitters = emitters
        self.check_timings = agentConfig.get('check_timings')
        self.push_times = {
            'host_metadata': {
                'start': time.time(),
                'interval': int(agentConfig.get('metadata_interval', 4 * 60 * 60))
            },
            'external_host_tags': {
                'start': time.time() - 3 * 60,  # Wait for the checks to init
                'interval': int(agentConfig.get('external_host_tags', 5 * 60))
            },
            'agent_checks': {
                'start': time.time(),
                'interval': int(agentConfig.get('agent_checks_interval', 10 * 60))
            },
            'dd_check_tags': {
                'start': time.time(),
                'interval': int(agentConfig.get('dd_check_tags_interval', 10 * 60))
            },
        }
        socket.setdefaulttimeout(15)
        self.run_count = 0
        self.continue_running = True
        self.hostname_metadata_cache = None
        self.initialized_checks_d = []
        self.init_failed_checks_d = {}

        # Unix System Checks
        self._unix_system_checks = {
            'io': u.IO(log),
            'load': u.Load(log),
            'memory': u.Memory(log),
            'processes': u.Processes(log),
            'cpu': u.Cpu(log),
            'system': u.System(log)
        }

        # Server Density Checks
        self._server_density_checks = {
            'identifier': yoshi.Identifier(log),
            'plugins': plugins.Plugins(log)
        }

        # Win32 System `Checks
        self._win32_system_checks = {
            'io': w32.IO(log),
            'proc': w32.Processes(log),
            'memory': w32.Memory(log),
            'network': w32.Network(log),
            'cpu': w32.Cpu(log)
        }

        # Old-style metric checks
        self._ganglia = Ganglia(log)

        # Agent performance metrics check
        self._agent_metrics = None

        self._metrics_checks = []

        # Custom metric checks
        for module_spec in [s.strip() for s in self.agentConfig.get('custom_checks', '').split(',')]:
            if len(module_spec) == 0:
                continue
            try:
                self._metrics_checks.append(modules.load(module_spec, 'Check')(log))
                log.info("Registered custom check %s" % module_spec)
                log.warning("Old format custom checks are deprecated. They should be moved to the checks.d interface as old custom checks will be removed in a next version")
            except Exception, e:
                log.exception('Unable to load custom check module %s' % module_spec)

        # Resource Checks
        self._resources_checks = [
            ResProcesses(log, self.agentConfig)
        ]
dataset/ETHPy150Open serverdensity/sd-agent/checks/collector.py/Collector.__init__/original