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package container
import "time"
// ThrottlingData stores CPU throttling stats of one running container.
// Not used on Windows.
type ThrottlingData struct {
// Number of periods with throttling active
Periods uint64 `json:"periods"`
// Number of periods when the container hits its throttling limit.
ThrottledPeriods uint64 `json:"throttled_periods"`
// Aggregate time the container was throttled for in nanoseconds.
ThrottledTime uint64 `json:"throttled_time"`
}
// CPUUsage stores All CPU stats aggregated since container inception.
type CPUUsage struct {
// Total CPU time consumed.
// Units: nanoseconds (Linux)
// Units: 100's of nanoseconds (Windows)
TotalUsage uint64 `json:"total_usage"`
// Total CPU time consumed per core (Linux). Not used on Windows.
// Units: nanoseconds.
PercpuUsage []uint64 `json:"percpu_usage,omitempty"`
// Time spent by tasks of the cgroup in kernel mode (Linux).
// Time spent by all container processes in kernel mode (Windows).
// Units: nanoseconds (Linux).
// Units: 100's of nanoseconds (Windows). Not populated for Hyper-V Containers.
UsageInKernelmode uint64 `json:"usage_in_kernelmode"`
// Time spent by tasks of the cgroup in user mode (Linux).
// Time spent by all container processes in user mode (Windows).
// Units: nanoseconds (Linux).
// Units: 100's of nanoseconds (Windows). Not populated for Hyper-V Containers
UsageInUsermode uint64 `json:"usage_in_usermode"`
}
// CPUStats aggregates and wraps all CPU related info of container
type CPUStats struct {
// CPU Usage. Linux and Windows.
CPUUsage CPUUsage `json:"cpu_usage"`
// System Usage. Linux only.
SystemUsage uint64 `json:"system_cpu_usage,omitempty"`
// Online CPUs. Linux only.
OnlineCPUs uint32 `json:"online_cpus,omitempty"`
// Throttling Data. Linux only.
ThrottlingData ThrottlingData `json:"throttling_data,omitempty"`
}
// MemoryStats aggregates all memory stats since container inception on Linux.
// Windows returns stats for commit and private working set only.
type MemoryStats struct {
// Linux Memory Stats
// current res_counter usage for memory
Usage uint64 `json:"usage,omitempty"`
// maximum usage ever recorded.
MaxUsage uint64 `json:"max_usage,omitempty"`
// TODO(vishh): Export these as stronger types.
// all the stats exported via memory.stat.
Stats map[string]uint64 `json:"stats,omitempty"`
// number of times memory usage hits limits.
Failcnt uint64 `json:"failcnt,omitempty"`
Limit uint64 `json:"limit,omitempty"`
// Windows Memory Stats
// See https://technet.microsoft.com/en-us/magazine/ff382715.aspx
// committed bytes
Commit uint64 `json:"commitbytes,omitempty"`
// peak committed bytes
CommitPeak uint64 `json:"commitpeakbytes,omitempty"`
// private working set
PrivateWorkingSet uint64 `json:"privateworkingset,omitempty"`
}
// BlkioStatEntry is one small entity to store a piece of Blkio stats
// Not used on Windows.
type BlkioStatEntry struct {
Major uint64 `json:"major"`
Minor uint64 `json:"minor"`
Op string `json:"op"`
Value uint64 `json:"value"`
}
// BlkioStats stores All IO service stats for data read and write.
// This is a Linux specific structure as the differences between expressing
// block I/O on Windows and Linux are sufficiently significant to make
// little sense attempting to morph into a combined structure.
type BlkioStats struct {
// number of bytes transferred to and from the block device
IoServiceBytesRecursive []BlkioStatEntry `json:"io_service_bytes_recursive"`
IoServicedRecursive []BlkioStatEntry `json:"io_serviced_recursive"`
IoQueuedRecursive []BlkioStatEntry `json:"io_queue_recursive"`
IoServiceTimeRecursive []BlkioStatEntry `json:"io_service_time_recursive"`
IoWaitTimeRecursive []BlkioStatEntry `json:"io_wait_time_recursive"`
IoMergedRecursive []BlkioStatEntry `json:"io_merged_recursive"`
IoTimeRecursive []BlkioStatEntry `json:"io_time_recursive"`
SectorsRecursive []BlkioStatEntry `json:"sectors_recursive"`
}
// StorageStats is the disk I/O stats for read/write on Windows.
type StorageStats struct {
ReadCountNormalized uint64 `json:"read_count_normalized,omitempty"`
ReadSizeBytes uint64 `json:"read_size_bytes,omitempty"`
WriteCountNormalized uint64 `json:"write_count_normalized,omitempty"`
WriteSizeBytes uint64 `json:"write_size_bytes,omitempty"`
}
// NetworkStats aggregates the network stats of one container
type NetworkStats struct {
// Bytes received. Windows and Linux.
RxBytes uint64 `json:"rx_bytes"`
// Packets received. Windows and Linux.
RxPackets uint64 `json:"rx_packets"`
// Received errors. Not used on Windows. Note that we don't `omitempty` this
// field as it is expected in the >=v1.21 API stats structure.
RxErrors uint64 `json:"rx_errors"`
// Incoming packets dropped. Windows and Linux.
RxDropped uint64 `json:"rx_dropped"`
// Bytes sent. Windows and Linux.
TxBytes uint64 `json:"tx_bytes"`
// Packets sent. Windows and Linux.
TxPackets uint64 `json:"tx_packets"`
// Sent errors. Not used on Windows. Note that we don't `omitempty` this
// field as it is expected in the >=v1.21 API stats structure.
TxErrors uint64 `json:"tx_errors"`
// Outgoing packets dropped. Windows and Linux.
TxDropped uint64 `json:"tx_dropped"`
// Endpoint ID. Not used on Linux.
EndpointID string `json:"endpoint_id,omitempty"`
// Instance ID. Not used on Linux.
InstanceID string `json:"instance_id,omitempty"`
}
// PidsStats contains the stats of a container's pids
type PidsStats struct {
// Current is the number of pids in the cgroup
Current uint64 `json:"current,omitempty"`
// Limit is the hard limit on the number of pids in the cgroup.
// A "Limit" of 0 means that there is no limit.
Limit uint64 `json:"limit,omitempty"`
}
// StatsResponse aggregates all types of stats of one container.
type StatsResponse struct {
// ID is the ID of the container for which the stats were collected.
ID string `json:"id,omitempty"`
// Name is the name of the container for which the stats were collected.
Name string `json:"name,omitempty"`
// OSType is the OS of the container ("linux" or "windows") to allow
// platform-specific handling of stats.
OSType string `json:"os_type,omitempty"`
// Read is the date and time at which this sample was collected.
Read time.Time `json:"read"`
// CPUStats contains CPU related info of the container.
CPUStats CPUStats `json:"cpu_stats,omitempty"`
// MemoryStats aggregates all memory stats since container inception on Linux.
// Windows returns stats for commit and private working set only.
MemoryStats MemoryStats `json:"memory_stats,omitempty"`
// Networks contains Nntwork statistics for the container per interface.
//
// This field is omitted if the container has no networking enabled.
Networks map[string]NetworkStats `json:"networks,omitempty"`
// -------------------------------------------------------------------------
// Linux-specific stats, not populated on Windows.
// -------------------------------------------------------------------------
// PidsStats contains Linux-specific stats of a container's process-IDs (PIDs).
//
// This field is Linux-specific and omitted for Windows containers.
PidsStats PidsStats `json:"pids_stats,omitempty"`
// BlkioStats stores all IO service stats for data read and write.
//
// This type is Linux-specific and holds many fields that are specific
// to cgroups v1.
//
// On a cgroup v2 host, all fields other than "io_service_bytes_recursive"
// are omitted or "null".
//
// This type is only populated on Linux and omitted for Windows containers.
BlkioStats BlkioStats `json:"blkio_stats,omitempty"`
// -------------------------------------------------------------------------
// Windows-specific stats, not populated on Linux.
// -------------------------------------------------------------------------
// NumProcs is the number of processors on the system.
//
// This field is Windows-specific and always zero for Linux containers.
NumProcs uint32 `json:"num_procs"`
// StorageStats is the disk I/O stats for read/write on Windows.
//
// This type is Windows-specific and omitted for Linux containers.
StorageStats StorageStats `json:"storage_stats,omitempty"`
// -------------------------------------------------------------------------
// PreRead and PreCPUStats contain the previous sample of stats for
// the container, and can be used to perform delta-calculation.
// -------------------------------------------------------------------------
// PreRead is the date and time at which this first sample was collected.
// This field is not propagated if the "one-shot" option is set. If the
// "one-shot" option is set, this field may be omitted, empty, or set
// to a default date (`0001-01-01T00:00:00Z`).
PreRead time.Time `json:"preread"`
// PreCPUStats contains the CPUStats of the previous sample.
PreCPUStats CPUStats `json:"precpu_stats,omitempty"`
}