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authorMatej Marusak <mmarusak@redhat.com>2020-02-13 20:21:53 +0100
committerMatej Marusak <mmarusak@redhat.com>2020-02-17 20:05:14 +0100
commit98774e14762ac0a1010bd1785c362f7d24ff63fd (patch)
treee7358de89305a901c452004d8c16d185d59b2e39 /pkg/api/handlers
parente4e5efc12b7902a22561170ca59f3da90b7b80ce (diff)
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stats: Expose CPU usage in API
`stats.CPU` is a number representing CPU usage in percents. It is possible to calculate it from other exposed fields (once they are implemented correctly) but why to do it, when this is already calculated. This does not break API, it just adds another field. Signed-off-by: Matej Marusak <mmarusak@redhat.com>
Diffstat (limited to 'pkg/api/handlers')
-rw-r--r--pkg/api/handlers/generic/containers_stats.go16
-rw-r--r--pkg/api/handlers/generic/types.go55
-rw-r--r--pkg/api/handlers/types.go8
3 files changed, 63 insertions, 16 deletions
diff --git a/pkg/api/handlers/generic/containers_stats.go b/pkg/api/handlers/generic/containers_stats.go
index 19e2cc882..977979741 100644
--- a/pkg/api/handlers/generic/containers_stats.go
+++ b/pkg/api/handlers/generic/containers_stats.go
@@ -7,7 +7,6 @@ import (
"github.com/containers/libpod/libpod"
"github.com/containers/libpod/libpod/define"
- "github.com/containers/libpod/pkg/api/handlers"
"github.com/containers/libpod/pkg/api/handlers/utils"
"github.com/containers/libpod/pkg/cgroups"
docker "github.com/docker/docker/api/types"
@@ -58,17 +57,18 @@ func StatsContainer(w http.ResponseWriter, r *http.Request) {
}
var preRead time.Time
- var preCPUStats docker.CPUStats
+ var preCPUStats CPUStats
if query.Stream {
preRead = time.Now()
systemUsage, _ := cgroups.GetSystemCPUUsage()
- preCPUStats = docker.CPUStats{
+ preCPUStats = CPUStats{
CPUUsage: docker.CPUUsage{
TotalUsage: stats.CPUNano,
PercpuUsage: stats.PerCPU,
UsageInKernelmode: stats.CPUSystemNano,
UsageInUsermode: stats.CPUNano - stats.CPUSystemNano,
},
+ CPU: stats.CPU,
SystemUsage: systemUsage,
OnlineCPUs: 0,
ThrottlingData: docker.ThrottlingData{},
@@ -124,9 +124,8 @@ func StatsContainer(w http.ResponseWriter, r *http.Request) {
}
systemUsage, _ := cgroups.GetSystemCPUUsage()
-
- s := handlers.Stats{StatsJSON: docker.StatsJSON{
- Stats: docker.Stats{
+ s := StatsJSON{
+ Stats: Stats{
Read: time.Now(),
PreRead: preRead,
PidsStats: docker.PidsStats{
@@ -143,13 +142,14 @@ func StatsContainer(w http.ResponseWriter, r *http.Request) {
IoTimeRecursive: nil,
SectorsRecursive: nil,
},
- CPUStats: docker.CPUStats{
+ CPUStats: CPUStats{
CPUUsage: docker.CPUUsage{
TotalUsage: cgroupStat.CPU.Usage.Total,
PercpuUsage: cgroupStat.CPU.Usage.PerCPU,
UsageInKernelmode: cgroupStat.CPU.Usage.Kernel,
UsageInUsermode: cgroupStat.CPU.Usage.Total - cgroupStat.CPU.Usage.Kernel,
},
+ CPU: stats.CPU,
SystemUsage: systemUsage,
OnlineCPUs: uint32(len(cgroupStat.CPU.Usage.PerCPU)),
ThrottlingData: docker.ThrottlingData{
@@ -173,7 +173,7 @@ func StatsContainer(w http.ResponseWriter, r *http.Request) {
Name: stats.Name,
ID: stats.ContainerID,
Networks: net,
- }}
+ }
utils.WriteJSON(w, http.StatusOK, s)
if flusher, ok := w.(http.Flusher); ok {
diff --git a/pkg/api/handlers/generic/types.go b/pkg/api/handlers/generic/types.go
new file mode 100644
index 000000000..f068ac011
--- /dev/null
+++ b/pkg/api/handlers/generic/types.go
@@ -0,0 +1,55 @@
+package generic
+
+import (
+ "time"
+
+ docker "github.com/docker/docker/api/types"
+)
+
+// CPUStats aggregates and wraps all CPU related info of container
+type CPUStats struct {
+ // CPU Usage. Linux and Windows.
+ CPUUsage docker.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"`
+
+ // Usage of CPU in %. Linux only.
+ CPU float64 `json:"cpu"`
+
+ // Throttling Data. Linux only.
+ ThrottlingData docker.ThrottlingData `json:"throttling_data,omitempty"`
+}
+
+// Stats is Ultimate struct aggregating all types of stats of one container
+type Stats struct {
+ // Common stats
+ Read time.Time `json:"read"`
+ PreRead time.Time `json:"preread"`
+
+ // Linux specific stats, not populated on Windows.
+ PidsStats docker.PidsStats `json:"pids_stats,omitempty"`
+ BlkioStats docker.BlkioStats `json:"blkio_stats,omitempty"`
+
+ // Windows specific stats, not populated on Linux.
+ NumProcs uint32 `json:"num_procs"`
+ StorageStats docker.StorageStats `json:"storage_stats,omitempty"`
+
+ // Shared stats
+ CPUStats CPUStats `json:"cpu_stats,omitempty"`
+ PreCPUStats CPUStats `json:"precpu_stats,omitempty"` // "Pre"="Previous"
+ MemoryStats docker.MemoryStats `json:"memory_stats,omitempty"`
+}
+
+type StatsJSON struct {
+ Stats
+
+ Name string `json:"name,omitempty"`
+ ID string `json:"id,omitempty"`
+
+ // Networks request version >=1.21
+ Networks map[string]docker.NetworkStats `json:"networks,omitempty"`
+}
diff --git a/pkg/api/handlers/types.go b/pkg/api/handlers/types.go
index f5d9f9ad5..60baaa366 100644
--- a/pkg/api/handlers/types.go
+++ b/pkg/api/handlers/types.go
@@ -78,10 +78,6 @@ type Container struct {
docker.ContainerCreateConfig
}
-type ContainerStats struct {
- docker.ContainerStats
-}
-
type Version struct {
docker.Version
}
@@ -143,10 +139,6 @@ type IDResponse struct {
ID string `json:"id"`
}
-type Stats struct {
- docker.StatsJSON
-}
-
type ContainerTopOKBody struct {
dockerContainer.ContainerTopOKBody
}