mirror of
https://github.com/fankes/beszel.git
synced 2025-10-19 01:39:34 +08:00
119 lines
3.5 KiB
Go
119 lines
3.5 KiB
Go
package container
|
|
|
|
import "time"
|
|
|
|
// Docker container info from /containers/json
|
|
type ApiInfo struct {
|
|
Id string
|
|
IdShort string
|
|
Names []string
|
|
Status string
|
|
// Image string
|
|
// ImageID string
|
|
// Command string
|
|
// Created int64
|
|
// Ports []Port
|
|
// SizeRw int64 `json:",omitempty"`
|
|
// SizeRootFs int64 `json:",omitempty"`
|
|
// Labels map[string]string
|
|
// State string
|
|
// HostConfig struct {
|
|
// NetworkMode string `json:",omitempty"`
|
|
// Annotations map[string]string `json:",omitempty"`
|
|
// }
|
|
// NetworkSettings *SummaryNetworkSettings
|
|
// Mounts []MountPoint
|
|
}
|
|
|
|
// Docker container resources from /containers/{id}/stats
|
|
type ApiStats struct {
|
|
Read time.Time `json:"read"` // Time of stats generation
|
|
NumProcs uint32 `json:"num_procs,omitzero"` // Windows specific, not populated on Linux.
|
|
Networks map[string]NetworkStats
|
|
CPUStats CPUStats `json:"cpu_stats"`
|
|
MemoryStats MemoryStats `json:"memory_stats"`
|
|
}
|
|
|
|
func (s *ApiStats) CalculateCpuPercentLinux(prevCpuContainer uint64, prevCpuSystem uint64) float64 {
|
|
cpuDelta := s.CPUStats.CPUUsage.TotalUsage - prevCpuContainer
|
|
systemDelta := s.CPUStats.SystemUsage - prevCpuSystem
|
|
|
|
// Avoid division by zero and handle first run case
|
|
if systemDelta == 0 || prevCpuContainer == 0 {
|
|
return 0.0
|
|
}
|
|
|
|
return float64(cpuDelta) / float64(systemDelta) * 100.0
|
|
}
|
|
|
|
// from: https://github.com/docker/cli/blob/master/cli/command/container/stats_helpers.go#L185
|
|
func (s *ApiStats) CalculateCpuPercentWindows(prevCpuUsage uint64, prevRead time.Time) float64 {
|
|
// Max number of 100ns intervals between the previous time read and now
|
|
possIntervals := uint64(s.Read.Sub(prevRead).Nanoseconds())
|
|
possIntervals /= 100 // Convert to number of 100ns intervals
|
|
possIntervals *= uint64(s.NumProcs) // Multiple by the number of processors
|
|
|
|
// Intervals used
|
|
intervalsUsed := s.CPUStats.CPUUsage.TotalUsage - prevCpuUsage
|
|
|
|
// Percentage avoiding divide-by-zero
|
|
if possIntervals > 0 {
|
|
return float64(intervalsUsed) / float64(possIntervals) * 100.0
|
|
}
|
|
return 0.00
|
|
}
|
|
|
|
type CPUStats struct {
|
|
// CPU Usage. Linux and Windows.
|
|
CPUUsage CPUUsage `json:"cpu_usage"`
|
|
// System Usage. Linux only.
|
|
SystemUsage uint64 `json:"system_cpu_usage,omitempty"`
|
|
}
|
|
|
|
type CPUUsage struct {
|
|
// Total CPU time consumed.
|
|
// Units: nanoseconds (Linux)
|
|
// Units: 100's of nanoseconds (Windows)
|
|
TotalUsage uint64 `json:"total_usage"`
|
|
}
|
|
|
|
type MemoryStats struct {
|
|
// current res_counter usage for memory
|
|
Usage uint64 `json:"usage,omitempty"`
|
|
// all the stats exported via memory.stat.
|
|
Stats MemoryStatsStats `json:"stats"`
|
|
// private working set (Windows only)
|
|
PrivateWorkingSet uint64 `json:"privateworkingset,omitempty"`
|
|
}
|
|
|
|
type MemoryStatsStats struct {
|
|
Cache uint64 `json:"cache,omitempty"`
|
|
InactiveFile uint64 `json:"inactive_file,omitempty"`
|
|
}
|
|
|
|
type NetworkStats struct {
|
|
// Bytes received. Windows and Linux.
|
|
RxBytes uint64 `json:"rx_bytes"`
|
|
// Bytes sent. Windows and Linux.
|
|
TxBytes uint64 `json:"tx_bytes"`
|
|
}
|
|
|
|
type prevNetStats struct {
|
|
Sent uint64
|
|
Recv uint64
|
|
}
|
|
|
|
// Docker container stats
|
|
type Stats struct {
|
|
Name string `json:"n" cbor:"0,keyasint"`
|
|
Cpu float64 `json:"c" cbor:"1,keyasint"`
|
|
Mem float64 `json:"m" cbor:"2,keyasint"`
|
|
NetworkSent float64 `json:"ns" cbor:"3,keyasint"`
|
|
NetworkRecv float64 `json:"nr" cbor:"4,keyasint"`
|
|
// PrevCpu [2]uint64 `json:"-"`
|
|
CpuSystem uint64 `json:"-"`
|
|
CpuContainer uint64 `json:"-"`
|
|
PrevNet prevNetStats `json:"-"`
|
|
PrevReadTime time.Time `json:"-"`
|
|
}
|