Class: Fluent::Plugin::WindowsExporterInput

Inherits:
Input
  • Object
show all
Includes:
Constants
Defined in:
lib/fluent/plugin/in_windows_exporter.rb

Constant Summary

Constants included from Constants

Constants::PERF_100NSEC_TIMER, Constants::PERF_ELAPSED_TIME, Constants::PERF_PRECISION_100NS_TIMER, Constants::TICKS_TO_SECONDS_SCALE_FACTOR, Constants::WINDOWS_EPOCH

Instance Method Summary collapse

Instance Method Details

#collect_cpu ⇒ Object 



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# File 'lib/fluent/plugin/in_windows_exporter.rb', line 102

def collect_cpu
  hpd = @cache_manager.hkey_perf_data_cache
  counterset_name = "Processor Information"
  unless hpd.key?(counterset_name)
    $log.warn("Could not get HKeyPerfData CounterSet: #{counterset_name}")
    return []
  end

  records = []
  for core in hpd[counterset_name].instances do
    if core.name.downcase.include?("_total")
      next
    end
    records += [
      {
        "type" => "counter",
        "name" => "windows_cpu_cstate_seconds_total",
        "desc" => "Time spent in low-power idle state",
        "labels" => {"core" => core.name, "state" => "c1" },
        "value" => core.counters["% C1 Time"].value
      },
      {
        "type" => "counter",
        "name" => "windows_cpu_cstate_seconds_total",
        "desc" => "Time spent in low-power idle state",
        "labels" => {"core" => core.name, "state" => "c2" },
        "value" => core.counters["% C2 Time"].value
      },
      {
        "type" => "counter",
        "name" => "windows_cpu_cstate_seconds_total",
        "desc" => "Time spent in low-power idle state",
        "labels" => {"core" => core.name, "state" => "c3" },
        "value" => core.counters["% C3 Time"].value
      },
      {
        "type" => "counter",
        "name" => "windows_cpu_time_total",
        "desc" => "Time that processor spent in different modes (idle, user, system, ...)",
        "labels" => {"core" => core.name, "mode" => "idle"},
        "value" => core.counters["% Idle Time"].value
      },
      {
        "type" => "counter",
        "name" => "windows_cpu_time_total",
        "desc" => "Time that processor spent in different modes (idle, user, system, ...)",
        "labels" => {"core" => core.name, "mode" => "interrupt"},
        "value" => core.counters["% Interrupt Time"].value
      },
      {
        "type" => "counter",
        "name" => "windows_cpu_time_total",
        "desc" => "Time that processor spent in different modes (idle, user, system, ...)",
        "labels" => {"core" => core.name, "mode" => "dpc"},
        "value" => core.counters["% DPC Time"].value
      },
      {
        "type" => "counter",
        "name" => "windows_cpu_time_total",
        "desc" => "Time that processor spent in different modes (idle, user, system, ...)",
        "labels" => {"core" => core.name, "mode" => "privileged"},
        "value" => core.counters["% Privileged Time"].value
      },
      {
        "type" => "counter",
        "name" => "windows_cpu_time_total",
        "desc" => "Time that processor spent in different modes (idle, user, system, ...)",
        "labels" => {"core" => core.name, "mode" => "user"},
        "value" => core.counters["% User Time"].value
      },
      {
        "type" => "counter",
        "name" => "windows_cpu_interrupts_total",
        "desc" => "Total number of received and serviced hardware interrupts",
        "labels" => {"core" => core.name},
        "value" => core.counters["Interrupts/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_cpu_dpcs_total",
        "desc" => "Total number of received and serviced deferred procedure calls (DPCs)",
        "labels" => {"core" => core.name},
        "value" => core.counters["DPCs Queued/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_cpu_clock_interrupts_total",
        "desc" => "Total number of received and serviced clock tick interrupts",
        "labels" => {"core" => core.name},
        "value" => core.counters["Clock Interrupts/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_cpu_idle_break_events_total",
        "desc" => "Total number of time processor was woken from idle",
        "labels" => {"core" => core.name},
        "value" => core.counters["Idle Break Events/sec"].value
      },
      {
        "type" => "gauge",
        "name" => "windows_cpu_parking_status",
        "desc" => "Parking Status represents whether a processor is parked or not",
        "labels" => {"core" => core.name},
        "value" => core.counters["Parking Status"].value
      },
      {
        "type" => "gauge",
        "name" => "windows_cpu_core_frequency_mhz",
        "desc" => "Core frequency in megahertz",
        "labels" => {"core" => core.name},
        "value" => core.counters["Processor Frequency"].value
      },
      {
        "type" => "gauge",
        "name" => "windows_cpu_processor_performance",
        "desc" => "Processor Performance is the average performance of the processor while it is executing instructions, as a percentage of the nominal performance of the processor. On some processors, Processor Performance may exceed 100%",
        "labels" => {"core" => core.name},
        "value" => core.counters["% Processor Performance"].value
      }
    ]
  end
  return records
end

#collect_logical_disk ⇒ Object 



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# File 'lib/fluent/plugin/in_windows_exporter.rb', line 226

def collect_logical_disk
  hpd = @cache_manager.hkey_perf_data_cache
  counterset_name = "LogicalDisk"
  unless hpd.key?(counterset_name)
    $log.warn("Could not get HKeyPerfData CounterSet: #{counterset_name}")
    return []
  end

  records = []
  for volume in hpd[counterset_name].instances do
    if volume.name.downcase.include?("_total")
      next
    end

    records += [
      {
        "type" => "gauge",
        "name" => "windows_logical_disk_requests_queued",
        "desc" => "Number of requests outstanding on the disk at the time the performance data is collected",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["Current Disk Queue Length"].value
      },
      {
        "type" => "counter",
        "name" => "windows_logical_disk_read_bytes_total",
        "desc" => "Rate at which bytes are transferred from the disk during read operations",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["Disk Read Bytes/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_logical_disk_reads_total",
        "desc" => "Rate of read operations on the disk",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["Disk Reads/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_logical_disk_write_bytes_total",
        "desc" => "Rate at which bytes are transferred to the disk during write operations",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["Disk Write Bytes/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_logical_disk_writes_total",
        "desc" => "Rate of write operations on the disk",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["Disk Writes/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_logical_disk_read_seconds_total",
        "desc" => "Seconds the disk was busy servicing read requests",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["% Disk Read Time"].value
      },
      {
        "type" => "counter",
        "name" => "windows_logical_disk_write_seconds_total",
        "desc" => "Seconds the disk was busy servicing write requests",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["% Disk Write Time"].value
      },
      {
        "type" => "gauge",
        "name" => "windows_logical_disk_free_bytes",
        "desc" => "Unused space of the disk in bytes (not real time, updates every 10-15 min)",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["Free Megabytes"].value * 1024 * 1024
      },
      {
        "type" => "gauge",
        "name" => "windows_logical_disk_size_bytes",
        "desc" => "Total size of the disk in bytes (not real time, updates every 10-15 min)",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["% Free Space"].base_value * 1024 * 1024
      },
      {
        "type" => "counter",
        "name" => "windows_logical_disk_idle_seconds_total",
        "desc" => "Seconds the disk was idle (not servicing read/write requests)",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["% Idle Time"].value
      },
      {
        "type" => "counter",
        "name" => "windows_logical_disk_split_ios_total",
        "desc" => "Number of I/Os to the disk split into multiple I/Os",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["Split IO/Sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_logical_disk_read_latency_seconds_total",
        "desc" => "Shows the average time, in seconds, of a read operation from the disk",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["Avg. Disk sec/Read"].value * TICKS_TO_SECONDS_SCALE_FACTOR
      },
      {
        "type" => "counter",
        "name" => "windows_logical_disk_write_latency_seconds_total",
        "desc" => "Shows the average time, in seconds, of a write operation to the disk",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["Avg. Disk sec/Write"].value * TICKS_TO_SECONDS_SCALE_FACTOR
      },
      {
        "type" => "counter",
        "name" => "windows_logical_disk_read_write_latency_seconds_total",
        "desc" => "Shows the time, in seconds, of the average disk transfer",
        "labels" => {"volume" => volume.name},
        "value" => volume.counters["Avg. Disk sec/Transfer"].value * TICKS_TO_SECONDS_SCALE_FACTOR
      }
    ]
  end
  return records
end

#collect_memory ⇒ Object 



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# File 'lib/fluent/plugin/in_windows_exporter.rb', line 344

def collect_memory
  hpd = @cache_manager.hkey_perf_data_cache
  counterset_name = "Memory"
  unless hpd.key?(counterset_name)
    $log.warn("Could not get HKeyPerfData CounterSet: #{counterset_name}")
    return []
  end

  return [
    {
      "type" => "gauge",
      "name" => "windows_memory_available_bytes",
      "desc" => "The amount of physical memory immediately available for allocation to a process or for system use. It is equal to the sum of memory assigned to the standby (cached), free and zero page lists",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Available Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_cache_bytes",
      "desc" => "Number of bytes currently being used by the file system cache",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Cache Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_cache_bytes_peak",
      "desc" => "Maximum number of CacheBytes after the system was last restarted",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Cache Bytes Peak"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_cache_faults_total",
      "desc" => "Number of faults which occur when a page sought in the file system cache is not found there and must be retrieved from elsewhere in memory (soft fault) or from disk (hard fault)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Cache Faults/sec"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_commit_limit",
      "desc" => "Amount of virtual memory, in bytes, that can be committed without having to extend the paging file(s)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Commit Limit"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_committed_bytes",
      "desc" => "Amount of committed virtual memory, in bytes",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Committed Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_demand_zero_faults_total",
      "desc" => "The number of zeroed pages required to satisfy faults. Zeroed pages, pages emptied of previously stored data and filled with zeros, are a security feature of Windows that prevent processes from seeing data stored by earlier processes that used the memory space",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Demand Zero Faults/sec"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_free_and_zero_page_list_bytes",
      "desc" => "(FreeAndZeroPageListBytes)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Free & Zero Page List Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_free_system_page_table_entries",
      "desc" => "Number of page table entries not being used by the system",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Free System Page Table Entries"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_modified_page_list_bytes",
      "desc" => "(ModifiedPageListBytes)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Modified Page List Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_page_faults_total",
      "desc" => "Overall rate at which faulted pages are handled by the processor",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Page Faults/sec"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_swap_page_reads_total",
      "desc" => "Number of disk page reads (a single read operation reading several pages is still only counted once)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Page Reads/sec"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_swap_pages_read_total",
      "desc" => "Number of pages read across all page reads (ie counting all pages read even if they are read in a single operation)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Pages Input/sec"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_swap_pages_written_total",
      "desc" => "Number of pages written across all page writes (ie counting all pages written even if they are written in a single operation)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Pages Output/sec"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_swap_page_operations_total",
      "desc" => "Total number of swap page read and writes (PagesPersec)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Pages/sec"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_swap_page_writes_total",
      "desc" => "Number of disk page writes (a single write operation writing several pages is still only counted once)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Page Writes/sec"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_pool_nonpaged_allocs_total",
      "desc" => "The number of calls to allocate space in the nonpaged pool. The nonpaged pool is an area of system memory area for objects that cannot be written to disk, and must remain in physical memory as long as they are allocated",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Pool Nonpaged Allocs"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_pool_nonpaged_bytes_total",
      "desc" => "Number of bytes in the non-paged pool",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Pool Nonpaged Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_pool_paged_allocs_total",
      "desc" => "Number of calls to allocate space in the paged pool, regardless of the amount of space allocated in each call",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Pool Paged Allocs"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_pool_paged_bytes",
      "desc" => "Number of bytes in the paged pool",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Pool Paged Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_pool_paged_resident_bytes",
      "desc" => "(PoolPagedResidentBytes)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Pool Paged Resident Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_standby_cache_core_bytes",
      "desc" => "(StandbyCacheCoreBytes)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Standby Cache Core Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_standby_cache_normal_priority_bytes",
      "desc" => "(StandbyCacheNormalPriorityBytes)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Standby Cache Normal Priority Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_standby_cache_reserve_bytes",
      "desc" => "(StandbyCacheReserveBytes)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Standby Cache Reserve Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_system_cache_resident_bytes",
      "desc" => "(SystemCacheResidentBytes)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["System Cache Resident Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_system_code_resident_bytes",
      "desc" => "(SystemCodeResidentBytes)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["System Code Resident Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_system_code_total_bytes",
      "desc" => "(SystemCodeTotalBytes)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["System Code Total Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_system_driver_resident_bytes",
      "desc" => "(SystemDriverResidentBytes)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["System Driver Resident Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_system_driver_total_bytes",
      "desc" => "(SystemDriverTotalBytes)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["System Driver Total Bytes"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_transition_faults_total",
      "desc" => "(TransitionFaultsPersec)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Transition Faults/sec"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_transition_pages_repurposed_total",
      "desc" => "(TransitionPagesRePurposedPersec)",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Transition Pages RePurposed/sec"].value
    },
    {
      "type" => "gauge",
      "name" => "windows_memory_write_copies_total",
      "desc" => "The number of page faults caused by attempting to write that were satisfied by copying the page from elsewhere in physical memory",
      "labels" => {},
      "value" => hpd["Memory"].instances[0].counters["Write Copies/sec"].value
    }
  ]
end

#collect_net ⇒ Object 



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# File 'lib/fluent/plugin/in_windows_exporter.rb', line 580

def collect_net
  hpd = @cache_manager.hkey_perf_data_cache
  counterset_name = "Network Interface"
  unless hpd.key?(counterset_name)
    $log.warn("Could not get HKeyPerfData CounterSet: #{counterset_name}")
    return []
  end

  records = []
  for nic in hpd[counterset_name].instances do
    name = nic.name.gsub!(/[^a-zA-Z0-9]/, '_')
    if name == ""
      next
    end

    records += [
      {
        "type" => "counter",
        "name" => "windows_net_bytes_received_total",
        "desc" => "Total bytes received by interface",
        "labels" => {"nic": name},
        "value" => nic.counters["Bytes Received/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_net_bytes_sent_total",
        "desc" => "Total bytes transmitted by interface",
        "labels" => {"nic": name},
        "value" => nic.counters["Bytes Sent/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_net_bytes_total",
        "desc" => "Total bytes received and transmitted by interface",
        "labels" => {"nic": name},
        "value" => nic.counters["Bytes Total/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_net_packets_outbound_discarded_total",
        "desc" => "Total outbound packets that were chosen to be discarded even though no errors had been detected to prevent transmission",
        "labels" => {"nic": name},
        "value" => nic.counters["Packets Outbound Discarded"].value
      },
      {
        "type" => "counter",
        "name" => "windows_net_packets_outbound_errors_total",
        "desc" => "Total packets that could not be transmitted due to errors",
        "labels" => {"nic": name},
        "value" => nic.counters["Packets Outbound Errors"].value
      },
      {
        "type" => "counter",
        "name" => "windows_net_packets_total",
        "desc" => "Total packets received and transmitted by interface",
        "labels" => {"nic": name},
        "value" => nic.counters["Packets/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_net_packets_received_discarded_total",
        "desc" => "Total inbound packets that were chosen to be discarded even though no errors had been detected to prevent delivery",
        "labels" => {"nic": name},
        "value" => nic.counters["Packets Received Discarded"].value
      },
      {
        "type" => "counter",
        "name" => "windows_net_packets_received_errors_total",
        "desc" => "Total packets that could not be received due to errors",
        "labels" => {"nic": name},
        "value" => nic.counters["Packets Received Errors"].value
      },
      {
        "type" => "counter",
        "name" => "windows_net_packets_received_total",
        "desc" => "Total packets received by interface",
        "labels" => {"nic": name},
        "value" => nic.counters["Packets Received/sec"].value
      },
      {
        "type" => "counter",
        "name" => "windows_net_packets_received_unknown_total",
        "desc" => "Total packets received by interface that were discarded because of an unknown or unsupported protocol",
        "labels" => {"nic": name},
        "value" => nic.counters["Packets Received Unknown"].value
      },
      {
        "type" => "counter",
        "name" => "windows_net_packets_sent_total",
        "desc" => "Total packets transmitted by interface",
        "labels" => {"nic": name},
        "value" => nic.counters["Packets Sent/sec"].value
      },
      {
        "type" => "gauge",
        "name" => "windows_net_current_bandwidth_bytes",
        "desc" => "Estimate of the interface's current bandwidth in bytes per second",
        "labels" => {"nic": name},
        "value" => nic.counters["Current Bandwidth"].value / 8
      }
    ]
  end
  return records
end

#collect_os ⇒ Object 



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# File 'lib/fluent/plugin/in_windows_exporter.rb', line 685

def collect_os
  hpd = @cache_manager.hkey_perf_data_cache
  mem = @cache_manager.memory_status_cache
  work = @cache_manager.work_station_info_cache
  perf = @cache_manager.performance_info_cache
  reg = @cache_manager.registry_info_cache

  records = [
    {
      "type" => "gauge",
      "name" => "windows_os_info",
      "desc" => "Contains full product name & version in labels",
      "labels" => {
        :product => "Microsoft #{reg[:ProductName]}",
        :version => "#{work[:VersionMajor]}.#{work[:VersionMinor]}.#{reg[:CurrentBuildNumber]}"
      },
      "value" => 1.0
    },
    {
      "type" => "gauge",
      "name" => "windows_os_physical_memory_free_bytes",
      "desc" => "Bytes of physical memory currently unused and available",
      "labels" => {},
      "value" => mem[:AvailPhys]
    },
    {
      "type" => "gauge",
      "name" => "windows_os_time",
      "desc" => "Current time as reported by the operating system, in Unix time",
      "labels" => {},
      "value" => Fluent::EventTime.now.to_f
    },
    {
      "type" => "gauge",
      "name" => "windows_os_timezone",
      "desc" => "Current timezone as reported by the operating system",
      "labels" => {:timezone => Time.now.strftime("%z")},
      "value" => 1.0
    },
    {
      "type" => "gauge",
      "name" => "windows_os_virtual_memory_free_bytes",
      "desc" => "Bytes of virtual memory currently unused and available",
      "labels" => {},
      "value" => mem[:AvailPageFile]
    },
    {
      "type" => "gauge",
      "name" => "windows_os_processes_limit",
      "desc" => "Maximum number of process contexts the operating system can support. The default value set by the provider is 4294967295 (0xFFFFFFFF)",
      "labels" => {},
      # prometheus-community/windows-exporter/collector/os.go#L275
      "value" => 4294967295.0
    },
    {
      "type" => "gauge",
      "name" => "windows_os_process_memory_limit_bytes",
      "desc" => "Maximum number of bytes of memory that can be allocated to a process",
      "labels" => {},
      "value" => mem[:TotalVirtual]
    },
    {
      "type" => "gauge",
      "name" => "windows_os_processes",
      "desc" => "Number of process contexts currently loaded or running on the operating system",
      "labels" => {},
      "value" => perf[:ProcessCount]
    },
    {
      "type" => "gauge",
      "name" => "windows_os_users",
      "desc" => "Number of user sessions for which the operating system is storing state information currently. For a list of current active logon sessions.",
      "labels" => {},
      "value" => work[:LoggedOnUsers]
    },
    {
      "type" => "gauge",
      "name" => "windows_os_paging_limit_bytes",
      "desc" => "Total number of bytes that can be sotred in the operating system paging files. 0 (zero) indicates that there are no paging files",
      "labels" => {},
      "value" => reg[:PagingLimitBytes]
    },
    {
      "type" => "gauge",
      "name" => "windows_os_virtual_memory_bytes",
      "desc" => "Bytes of virtual memory",
      "labels" => {},
      "value" => mem[:TotalPageFile],
    },
    {
      "type" => "gauge",
      "name" => "windows_os_visible_memory_bytes",
      "desc" => "Total bytes of physical memory available to the operating system. This value does not necessarily indicate the true amount of physical memory, but what is reported to the operating system as available to it",
      "labels" => {},
      "value" => mem[:TotalPhys]
    }
  ]

  counterset_name = "Paging File"
  unless hpd.key?(counterset_name)
    $log.warn("Could not get HKeyPerfData CounterSet: #{counterset_name}")
    return records
  end

  pfusage = 0
  for ins in hpd[counterset_name].instances do
    unless ins.name.downcase.include?("_total")
      pfusage += ins.counters["% Usage"].value
    end
  end

  records += [
    {
      "type" => "gauge",
      "name" => "windows_os_paging_free_bytes",
      "desc" => "Number of bytes that can be mapped into the operating system paging files without causing any other pages to be swapped out",
      "labels" => {},
      "value" =>  reg[:PagingLimitBytes] - pfusage * perf[:PageSize]
    }
  ]

  return records
end

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/in_windows_exporter.rb', line 57

def configure(conf)
  super
  @cache_manager = CacheManager.new

  @collectors = []
  @collectors << method(:collect_cpu) if @cpu
  @collectors << method(:collect_logical_disk) if @logical_disk
  @collectors << method(:collect_memory) if @memory
  @collectors << method(:collect_net) if @net
  @collectors << method(:collect_os) if @os
end

#on_timer ⇒ Object 



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# File 'lib/fluent/plugin/in_windows_exporter.rb', line 79

def on_timer
  now = Fluent::EventTime.now
  update_cache()
  $log.debug("Updated Windows counters (%.2fs)" % (Fluent::EventTime.now.to_f - now.to_f))

  es = Fluent::MultiEventStream.new
  for method in @collectors do
    begin
      for record in method.call() do
        es.add(now, record)
      end
    rescue => e
      $log.error(e.message)
      $log.error_backtrace
    end
  end
  router.emit_stream(@tag, es)
end

#shutdown ⇒ Object 



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# File 'lib/fluent/plugin/in_windows_exporter.rb', line 75

def shutdown
  super
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/in_windows_exporter.rb', line 69

def start
  super
  timer_execute(:in_windows_exporter, @scrape_interval, &method(:on_timer))
  $log.info("Start in_windows_exporter (%i collectors, every %is)" % [@collectors.count, @scrape_interval])
end

#update_cache ⇒ Object 



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# File 'lib/fluent/plugin/in_windows_exporter.rb', line 98

def update_cache
  @cache_manager.update
end