2015-01-07 19:22:42 -05:00
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package stats
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import (
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"time"
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"github.com/docker/libcontainer"
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"github.com/docker/libcontainer/cgroups"
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)
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type ThrottlingData struct {
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// Number of periods with throttling active
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Periods uint64 `json:"periods,omitempty"`
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// Number of periods when the container hit its throttling limit.
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ThrottledPeriods uint64 `json:"throttled_periods,omitempty"`
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// Aggregate time the container was throttled for in nanoseconds.
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ThrottledTime uint64 `json:"throttled_time,omitempty"`
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}
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2015-01-07 21:02:08 -05:00
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// All CPU stats are aggregated since container inception.
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2015-01-07 19:22:42 -05:00
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type CpuUsage struct {
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// Total CPU time consumed.
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// Units: nanoseconds.
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TotalUsage uint64 `json:"total_usage,omitempty"`
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// Total CPU time consumed per core.
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// Units: nanoseconds.
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PercpuUsage []uint64 `json:"percpu_usage,omitempty"`
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// Time spent by tasks of the cgroup in kernel mode.
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// Units: nanoseconds.
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UsageInKernelmode uint64 `json:"usage_in_kernelmode"`
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// Time spent by tasks of the cgroup in user mode.
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// Units: nanoseconds.
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UsageInUsermode uint64 `json:"usage_in_usermode"`
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}
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type CpuStats struct {
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CpuUsage CpuUsage `json:"cpu_usage,omitempty"`
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SystemUsage uint64 `json:"system_cpu_usage"`
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ThrottlingData ThrottlingData `json:"throttling_data,omitempty"`
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}
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type MemoryStats struct {
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// current res_counter usage for memory
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Usage uint64 `json:"usage,omitempty"`
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// maximum usage ever recorded.
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MaxUsage uint64 `json:"max_usage,omitempty"`
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// TODO(vishh): Export these as stronger types.
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// all the stats exported via memory.stat.
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Stats map[string]uint64 `json:"stats,omitempty"`
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// number of times memory usage hits limits.
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Failcnt uint64 `json:"failcnt"`
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Limit uint64 `json:"limit"`
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}
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type BlkioStatEntry struct {
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Major uint64 `json:"major,omitempty"`
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Minor uint64 `json:"minor,omitempty"`
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Op string `json:"op,omitempty"`
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Value uint64 `json:"value,omitempty"`
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}
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type BlkioStats struct {
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// number of bytes tranferred to and from the block device
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IoServiceBytesRecursive []BlkioStatEntry `json:"io_service_bytes_recursive,omitempty"`
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IoServicedRecursive []BlkioStatEntry `json:"io_serviced_recursive,omitempty"`
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IoQueuedRecursive []BlkioStatEntry `json:"io_queue_recursive,omitempty"`
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IoServiceTimeRecursive []BlkioStatEntry `json:"io_service_time_recursive,omitempty"`
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IoWaitTimeRecursive []BlkioStatEntry `json:"io_wait_time_recursive,omitempty"`
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IoMergedRecursive []BlkioStatEntry `json:"io_merged_recursive,omitempty"`
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IoTimeRecursive []BlkioStatEntry `json:"io_time_recursive,omitempty"`
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SectorsRecursive []BlkioStatEntry `json:"sectors_recursive,omitempty"`
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}
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type Network struct {
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RxBytes uint64 `json:"rx_bytes"`
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RxPackets uint64 `json:"rx_packets"`
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RxErrors uint64 `json:"rx_errors"`
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RxDropped uint64 `json:"rx_dropped"`
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TxBytes uint64 `json:"tx_bytes"`
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TxPackets uint64 `json:"tx_packets"`
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TxErrors uint64 `json:"tx_errors"`
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TxDropped uint64 `json:"tx_dropped"`
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}
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type Stats struct {
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Read time.Time `json:"read"`
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Network Network `json:"network,omitempty"`
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CpuStats CpuStats `json:"cpu_stats,omitempty"`
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MemoryStats MemoryStats `json:"memory_stats,omitempty"`
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BlkioStats BlkioStats `json:"blkio_stats,omitempty"`
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}
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2015-01-07 21:02:08 -05:00
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// ToStats converts the libcontainer.ContainerStats to the api specific
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// structs. This is done to preserve API compatibility and versioning.
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2015-01-07 19:22:42 -05:00
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func ToStats(ls *libcontainer.ContainerStats) *Stats {
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s := &Stats{}
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if ls.NetworkStats != nil {
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s.Network = Network{
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RxBytes: ls.NetworkStats.RxBytes,
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RxPackets: ls.NetworkStats.RxPackets,
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RxErrors: ls.NetworkStats.RxErrors,
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RxDropped: ls.NetworkStats.RxDropped,
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TxBytes: ls.NetworkStats.TxBytes,
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TxPackets: ls.NetworkStats.TxPackets,
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TxErrors: ls.NetworkStats.TxErrors,
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TxDropped: ls.NetworkStats.TxDropped,
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}
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}
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cs := ls.CgroupStats
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if cs != nil {
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s.BlkioStats = BlkioStats{
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IoServiceBytesRecursive: copyBlkioEntry(cs.BlkioStats.IoServiceBytesRecursive),
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IoServicedRecursive: copyBlkioEntry(cs.BlkioStats.IoServicedRecursive),
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IoQueuedRecursive: copyBlkioEntry(cs.BlkioStats.IoQueuedRecursive),
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IoServiceTimeRecursive: copyBlkioEntry(cs.BlkioStats.IoServiceTimeRecursive),
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IoWaitTimeRecursive: copyBlkioEntry(cs.BlkioStats.IoWaitTimeRecursive),
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IoMergedRecursive: copyBlkioEntry(cs.BlkioStats.IoMergedRecursive),
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IoTimeRecursive: copyBlkioEntry(cs.BlkioStats.IoTimeRecursive),
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SectorsRecursive: copyBlkioEntry(cs.BlkioStats.SectorsRecursive),
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}
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cpu := cs.CpuStats
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s.CpuStats = CpuStats{
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CpuUsage: CpuUsage{
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TotalUsage: cpu.CpuUsage.TotalUsage,
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PercpuUsage: cpu.CpuUsage.PercpuUsage,
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UsageInKernelmode: cpu.CpuUsage.UsageInKernelmode,
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UsageInUsermode: cpu.CpuUsage.UsageInUsermode,
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},
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ThrottlingData: ThrottlingData{
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Periods: cpu.ThrottlingData.Periods,
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ThrottledPeriods: cpu.ThrottlingData.ThrottledPeriods,
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ThrottledTime: cpu.ThrottlingData.ThrottledTime,
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},
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}
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mem := cs.MemoryStats
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s.MemoryStats = MemoryStats{
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Usage: mem.Usage,
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MaxUsage: mem.MaxUsage,
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Stats: mem.Stats,
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Failcnt: mem.Failcnt,
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}
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}
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return s
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}
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func copyBlkioEntry(entries []cgroups.BlkioStatEntry) []BlkioStatEntry {
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out := make([]BlkioStatEntry, len(entries))
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for i, re := range entries {
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out[i] = BlkioStatEntry{
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Major: re.Major,
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Minor: re.Minor,
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Op: re.Op,
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Value: re.Value,
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}
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}
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return out
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}
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