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Fix docker memory and cpu reporting in Windows (#3043)

This commit is contained in:
Daniel Nelson 2017-07-27 15:12:29 -07:00 committed by GitHub
parent 539c340c4d
commit eb609f553f
8 changed files with 819 additions and 564 deletions
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1
docs/LICENSE_OF_DEPENDENCIES.md
View File

@ -19,6 +19,7 @@ works:
- github.com/dancannon/gorethink [APACHE](https://github.com/dancannon/gorethink/blob/master/LICENSE)
- github.com/davecgh/go-spew [ISC](https://github.com/davecgh/go-spew/blob/master/LICENSE)
- github.com/docker/docker [APACHE](https://github.com/docker/docker/blob/master/LICENSE)
- github.com/docker/cli [APACHE](https://github.com/docker/cli/blob/master/LICENSE)
- github.com/eapache/go-resiliency [MIT](https://github.com/eapache/go-resiliency/blob/master/LICENSE)
- github.com/eapache/go-xerial-snappy [MIT](https://github.com/eapache/go-xerial-snappy/blob/master/LICENSE)
- github.com/eapache/queue [MIT](https://github.com/eapache/queue/blob/master/LICENSE)

13
plugins/inputs/docker/README.md
View File

@ -21,7 +21,8 @@ for the stat structure can be found
## To use environment variables (ie, docker-machine), set endpoint = "ENV"
endpoint = "unix:///var/run/docker.sock"
## Only collect metrics for these containers. Values will be appended to container_name_include.
## Only collect metrics for these containers. Values will be appended to
## container_name_include.
## Deprecated (1.4.0), use container_name_include
container_names = []
@ -39,6 +40,9 @@ for the stat structure can be found
## Whether to report for each container total blkio and network stats or not
total = false
## Which environment variables should we use as a tag
tag_env = ["JAVA_HOME", "HEAP_SIZE"]
## docker labels to include and exclude as tags. Globs accepted.
## Note that an empty array for both will include all labels as tags
docker_label_include = []
@ -46,6 +50,13 @@ for the stat structure can be found
## Which environment variables should we use as a tag
tag_env = ["JAVA_HOME", "HEAP_SIZE"]
## Optional SSL Config
# ssl_ca = "/etc/telegraf/ca.pem"
# ssl_cert = "/etc/telegraf/cert.pem"
# ssl_key = "/etc/telegraf/key.pem"
## Use SSL but skip chain & host verification
# insecure_skip_verify = false
```
### Measurements & Fields:

53
plugins/inputs/docker/client.go Normal file
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@ -0,0 +1,53 @@
package docker
import (
"context"
"github.com/docker/docker/api/types"
docker "github.com/docker/docker/client"
)
var (
version string
defaultHeaders = map[string]string{"User-Agent": "engine-api-cli-1.0"}
)
type Client interface {
Info(ctx context.Context) (types.Info, error)
ContainerList(ctx context.Context, options types.ContainerListOptions) ([]types.Container, error)
ContainerStats(ctx context.Context, containerID string, stream bool) (types.ContainerStats, error)
ContainerInspect(ctx context.Context, containerID string) (types.ContainerJSON, error)
}
func NewEnvClient() (Client, error) {
client, err := docker.NewEnvClient()
if err != nil {
return nil, err
}
return &SocketClient{client}, nil
}
func NewClient(host string) (Client, error) {
client, err := docker.NewClient(host, version, nil, defaultHeaders)
if err != nil {
return nil, err
}
return &SocketClient{client}, nil
}
type SocketClient struct {
client *docker.Client
}
func (c *SocketClient) Info(ctx context.Context) (types.Info, error) {
return c.client.Info(ctx)
}
func (c *SocketClient) ContainerList(ctx context.Context, options types.ContainerListOptions) ([]types.Container, error) {
return c.client.ContainerList(ctx, options)
}
func (c *SocketClient) ContainerStats(ctx context.Context, containerID string, stream bool) (types.ContainerStats, error) {
return c.client.ContainerStats(ctx, containerID, stream)
}
func (c *SocketClient) ContainerInspect(ctx context.Context, containerID string) (types.ContainerJSON, error) {
return c.client.ContainerInspect(ctx, containerID)
}

209
plugins/inputs/docker/docker.go
View File

@ -12,7 +12,6 @@ import (
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/client"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/filter"
"github.com/influxdata/telegraf/internal"
@ -46,61 +45,14 @@ type Docker struct {
ContainerExclude []string `toml:"container_name_exclude"`
ContainerFilter DockerContainerFilter
client *client.Client
newEnvClient func() (Client, error)
newClient func(host string) (Client, error)
client Client
engine_host string
testing bool
filtersCreated bool
}
// infoWrapper wraps client.Client.List for testing.
func infoWrapper(c *client.Client, ctx context.Context) (types.Info, error) {
if c != nil {
return c.Info(ctx)
}
fc := FakeDockerClient{}
return fc.Info(ctx)
}
// listWrapper wraps client.Client.ContainerList for testing.
func listWrapper(
c *client.Client,
ctx context.Context,
options types.ContainerListOptions,
) ([]types.Container, error) {
if c != nil {
return c.ContainerList(ctx, options)
}
fc := FakeDockerClient{}
return fc.ContainerList(ctx, options)
}
// statsWrapper wraps client.Client.ContainerStats for testing.
func statsWrapper(
c *client.Client,
ctx context.Context,
containerID string,
stream bool,
) (types.ContainerStats, error) {
if c != nil {
return c.ContainerStats(ctx, containerID, stream)
}
fc := FakeDockerClient{}
return fc.ContainerStats(ctx, containerID, stream)
}
func inspectWrapper(
c *client.Client,
ctx context.Context,
containerID string,
) (types.ContainerJSON, error) {
if c != nil {
return c.ContainerInspect(ctx, containerID)
}
fc := FakeDockerClient{}
return fc.ContainerInspect(ctx, containerID)
}
// KB, MB, GB, TB, PB...human friendly
const (
KB = 1000
@ -145,32 +97,28 @@ var sampleConfig = `
docker_label_exclude = []
`
// Description returns input description
func (d *Docker) Description() string {
return "Read metrics about docker containers"
}
// SampleConfig prints sampleConfig
func (d *Docker) SampleConfig() string { return sampleConfig }
// Gather starts stats collection
func (d *Docker) Gather(acc telegraf.Accumulator) error {
if d.client == nil && !d.testing {
var c *client.Client
if d.client == nil {
var c Client
var err error
defaultHeaders := map[string]string{"User-Agent": "engine-api-cli-1.0"}
if d.Endpoint == "ENV" {
c, err = client.NewEnvClient()
c, err = d.newEnvClient()
if err != nil {
return err
}
} else if d.Endpoint == "" {
c, err = client.NewClient("unix:///var/run/docker.sock", "", nil, defaultHeaders)
c, err = d.newClient("unix:///var/run/docker.sock")
if err != nil {
return err
}
} else {
c, err = client.NewClient(d.Endpoint, "", nil, defaultHeaders)
c, err = d.newClient(d.Endpoint)
if err != nil {
return err
}
@ -201,7 +149,7 @@ func (d *Docker) Gather(acc telegraf.Accumulator) error {
opts := types.ContainerListOptions{}
ctx, cancel := context.WithTimeout(context.Background(), d.Timeout.Duration)
defer cancel()
containers, err := listWrapper(d.client, ctx, opts)
containers, err := d.client.ContainerList(ctx, opts)
if err != nil {
return err
}
@ -232,7 +180,7 @@ func (d *Docker) gatherInfo(acc telegraf.Accumulator) error {
// Get info from docker daemon
ctx, cancel := context.WithTimeout(context.Background(), d.Timeout.Duration)
defer cancel()
info, err := infoWrapper(d.client, ctx)
info, err := d.client.Info(ctx)
if err != nil {
return err
}
@ -338,7 +286,7 @@ func (d *Docker) gatherContainer(
ctx, cancel := context.WithTimeout(context.Background(), d.Timeout.Duration)
defer cancel()
r, err := statsWrapper(d.client, ctx, container.ID, false)
r, err := d.client.ContainerStats(ctx, container.ID, false)
if err != nil {
return fmt.Errorf("Error getting docker stats: %s", err.Error())
}
@ -350,6 +298,7 @@ func (d *Docker) gatherContainer(
}
return fmt.Errorf("Error decoding: %s", err.Error())
}
daemonOSType := r.OSType
// Add labels to tags
for k, label := range container.Labels {
@ -362,7 +311,7 @@ func (d *Docker) gatherContainer(
// Add whitelisted environment variables to tags
if len(d.TagEnvironment) > 0 {
info, err := inspectWrapper(d.client, ctx, container.ID)
info, err := d.client.ContainerInspect(ctx, container.ID)
if err != nil {
return fmt.Errorf("Error inspecting docker container: %s", err.Error())
}
@ -377,7 +326,7 @@ func (d *Docker) gatherContainer(
}
}
gatherContainerStats(v, acc, tags, container.ID, d.PerDevice, d.Total)
gatherContainerStats(v, acc, tags, container.ID, d.PerDevice, d.Total, daemonOSType)
return nil
}
@ -389,46 +338,68 @@ func gatherContainerStats(
id string,
perDevice bool,
total bool,
daemonOSType string,
) {
now := stat.Read
memfields := map[string]interface{}{
"max_usage": stat.MemoryStats.MaxUsage,
"usage": stat.MemoryStats.Usage,
"fail_count": stat.MemoryStats.Failcnt,
"limit": stat.MemoryStats.Limit,
"total_pgmafault": stat.MemoryStats.Stats["total_pgmajfault"],
"cache": stat.MemoryStats.Stats["cache"],
"mapped_file": stat.MemoryStats.Stats["mapped_file"],
"total_inactive_file": stat.MemoryStats.Stats["total_inactive_file"],
"pgpgout": stat.MemoryStats.Stats["pagpgout"],
"rss": stat.MemoryStats.Stats["rss"],
"total_mapped_file": stat.MemoryStats.Stats["total_mapped_file"],
"writeback": stat.MemoryStats.Stats["writeback"],
"unevictable": stat.MemoryStats.Stats["unevictable"],
"pgpgin": stat.MemoryStats.Stats["pgpgin"],
"total_unevictable": stat.MemoryStats.Stats["total_unevictable"],
"pgmajfault": stat.MemoryStats.Stats["pgmajfault"],
"total_rss": stat.MemoryStats.Stats["total_rss"],
"total_rss_huge": stat.MemoryStats.Stats["total_rss_huge"],
"total_writeback": stat.MemoryStats.Stats["total_write_back"],
"total_inactive_anon": stat.MemoryStats.Stats["total_inactive_anon"],
"rss_huge": stat.MemoryStats.Stats["rss_huge"],
"hierarchical_memory_limit": stat.MemoryStats.Stats["hierarchical_memory_limit"],
"total_pgfault": stat.MemoryStats.Stats["total_pgfault"],
"total_active_file": stat.MemoryStats.Stats["total_active_file"],
"active_anon": stat.MemoryStats.Stats["active_anon"],
"total_active_anon": stat.MemoryStats.Stats["total_active_anon"],
"total_pgpgout": stat.MemoryStats.Stats["total_pgpgout"],
"total_cache": stat.MemoryStats.Stats["total_cache"],
"inactive_anon": stat.MemoryStats.Stats["inactive_anon"],
"active_file": stat.MemoryStats.Stats["active_file"],
"pgfault": stat.MemoryStats.Stats["pgfault"],
"inactive_file": stat.MemoryStats.Stats["inactive_file"],
"total_pgpgin": stat.MemoryStats.Stats["total_pgpgin"],
"usage_percent": calculateMemPercent(stat),
"container_id": id,
}
memstats := []string{
"active_anon",
"active_file",
"cache",
"hierarchical_memory_limit",
"inactive_anon",
"inactive_file",
"mapped_file",
"pgfault",
"pgmajfault",
"pgpgin",
"pgpgout",
"rss",
"rss_huge",
"total_active_anon",
"total_active_file",
"total_cache",
"total_inactive_anon",
"total_inactive_file",
"total_mapped_file",
"total_pgfault",
"total_pgmajfault",
"total_pgpgin",
"total_pgpgout",
"total_rss",
"total_rss_huge",
"total_unevictable",
"total_writeback",
"unevictable",
"writeback",
}
for _, field := range memstats {
if value, ok := stat.MemoryStats.Stats[field]; ok {
memfields[field] = value
}
}
if stat.MemoryStats.Failcnt != 0 {
memfields["fail_count"] = stat.MemoryStats.Failcnt
}
if daemonOSType != "windows" {
memfields["limit"] = stat.MemoryStats.Limit
memfields["usage"] = stat.MemoryStats.Usage
memfields["max_usage"] = stat.MemoryStats.MaxUsage
mem := calculateMemUsageUnixNoCache(stat.MemoryStats)
memLimit := float64(stat.MemoryStats.Limit)
memfields["usage_percent"] = calculateMemPercentUnixNoCache(memLimit, mem)
} else {
memfields["commit_bytes"] = stat.MemoryStats.Commit
memfields["commit_peak_bytes"] = stat.MemoryStats.CommitPeak
memfields["private_working_set"] = stat.MemoryStats.PrivateWorkingSet
}
acc.AddFields("docker_container_mem", memfields, tags, now)
cpufields := map[string]interface{}{
@ -439,9 +410,19 @@ func gatherContainerStats(
"throttling_periods": stat.CPUStats.ThrottlingData.Periods,
"throttling_throttled_periods": stat.CPUStats.ThrottlingData.ThrottledPeriods,
"throttling_throttled_time": stat.CPUStats.ThrottlingData.ThrottledTime,
"usage_percent": calculateCPUPercent(stat),
"container_id": id,
}
if daemonOSType != "windows" {
previousCPU := stat.PreCPUStats.CPUUsage.TotalUsage
previousSystem := stat.PreCPUStats.SystemUsage
cpuPercent := calculateCPUPercentUnix(previousCPU, previousSystem, stat)
cpufields["usage_percent"] = cpuPercent
} else {
cpuPercent := calculateCPUPercentWindows(stat)
cpufields["usage_percent"] = cpuPercent
}
cputags := copyTags(tags)
cputags["cpu"] = "cpu-total"
acc.AddFields("docker_container_cpu", cpufields, cputags, now)
@ -521,30 +502,6 @@ func gatherContainerStats(
gatherBlockIOMetrics(stat, acc, tags, now, id, perDevice, total)
}
func calculateMemPercent(stat *types.StatsJSON) float64 {
var memPercent = 0.0
if stat.MemoryStats.Limit > 0 {
memPercent = float64(stat.MemoryStats.Usage) / float64(stat.MemoryStats.Limit) * 100.0
}
return memPercent
}
func calculateCPUPercent(stat *types.StatsJSON) float64 {
var cpuPercent = 0.0
// calculate the change for the cpu and system usage of the container in between readings
cpuDelta := float64(stat.CPUStats.CPUUsage.TotalUsage) - float64(stat.PreCPUStats.CPUUsage.TotalUsage)
systemDelta := float64(stat.CPUStats.SystemUsage) - float64(stat.PreCPUStats.SystemUsage)
if systemDelta > 0.0 && cpuDelta > 0.0 {
if stat.CPUStats.OnlineCPUs > 0 {
cpuPercent = (cpuDelta / systemDelta) * float64(stat.CPUStats.OnlineCPUs) * 100.0
} else {
cpuPercent = (cpuDelta / systemDelta) * float64(len(stat.CPUStats.CPUUsage.PercpuUsage)) * 100.0
}
}
return cpuPercent
}
func gatherBlockIOMetrics(
stat *types.StatsJSON,
acc telegraf.Accumulator,
@ -742,6 +699,8 @@ func init() {
return &Docker{
PerDevice: true,
Timeout: internal.Duration{Duration: time.Second * 5},
newEnvClient: NewEnvClient,
newClient: NewClient,
filtersCreated: false,
}
})

296
plugins/inputs/docker/docker_test.go
View File

@ -1,8 +1,8 @@
package docker
import (
"context"
"testing"
"time"
"github.com/influxdata/telegraf/testutil"
@ -10,6 +10,56 @@ import (
"github.com/stretchr/testify/require"
)
type MockClient struct {
InfoF func(ctx context.Context) (types.Info, error)
ContainerListF func(ctx context.Context, options types.ContainerListOptions) ([]types.Container, error)
ContainerStatsF func(ctx context.Context, containerID string, stream bool) (types.ContainerStats, error)
ContainerInspectF func(ctx context.Context, containerID string) (types.ContainerJSON, error)
}
func (c *MockClient) Info(ctx context.Context) (types.Info, error) {
return c.InfoF(ctx)
}
func (c *MockClient) ContainerList(
ctx context.Context,
options types.ContainerListOptions,
) ([]types.Container, error) {
return c.ContainerListF(ctx, options)
}
func (c *MockClient) ContainerStats(
ctx context.Context,
containerID string,
stream bool,
) (types.ContainerStats, error) {
return c.ContainerStatsF(ctx, containerID, stream)
}
func (c *MockClient) ContainerInspect(
ctx context.Context,
containerID string,
) (types.ContainerJSON, error) {
return c.ContainerInspectF(ctx, containerID)
}
func newClient(host string) (Client, error) {
return &MockClient{
InfoF: func(context.Context) (types.Info, error) {
return info, nil
},
ContainerListF: func(context.Context, types.ContainerListOptions) ([]types.Container, error) {
return containerList, nil
},
ContainerStatsF: func(context.Context, string, bool) (types.ContainerStats, error) {
return containerStats(), nil
},
ContainerInspectF: func(context.Context, string) (types.ContainerJSON, error) {
return containerInspect, nil
},
}, nil
}
func TestDockerGatherContainerStats(t *testing.T) {
var acc testutil.Accumulator
stats := testStats()
@ -19,7 +69,7 @@ func TestDockerGatherContainerStats(t *testing.T) {
"container_image": "redis/image",
}
gatherContainerStats(stats, &acc, tags, "123456789", true, true)
gatherContainerStats(stats, &acc, tags, "123456789", true, true, "linux")
// test docker_container_net measurement
netfields := map[string]interface{}{
@ -73,41 +123,41 @@ func TestDockerGatherContainerStats(t *testing.T) {
// test docker_container_mem measurement
memfields := map[string]interface{}{
"max_usage": uint64(1001),
"usage": uint64(1111),
"fail_count": uint64(1),
"limit": uint64(2000),
"total_pgmafault": uint64(0),
"cache": uint64(0),
"mapped_file": uint64(0),
"total_inactive_file": uint64(0),
"pgpgout": uint64(0),
"rss": uint64(0),
"total_mapped_file": uint64(0),
"writeback": uint64(0),
"unevictable": uint64(0),
"pgpgin": uint64(0),
"total_unevictable": uint64(0),
"pgmajfault": uint64(0),
"total_rss": uint64(44),
"total_rss_huge": uint64(444),
"total_writeback": uint64(55),
"total_inactive_anon": uint64(0),
"rss_huge": uint64(0),
"hierarchical_memory_limit": uint64(0),
"total_pgfault": uint64(0),
"total_active_file": uint64(0),
"active_anon": uint64(0),
"total_active_anon": uint64(0),
"total_pgpgout": uint64(0),
"total_cache": uint64(0),
"inactive_anon": uint64(0),
"active_file": uint64(1),
"pgfault": uint64(2),
"inactive_file": uint64(3),
"total_pgpgin": uint64(4),
"usage_percent": float64(55.55),
"cache": uint64(0),
"container_id": "123456789",
"fail_count": uint64(1),
"hierarchical_memory_limit": uint64(0),
"inactive_anon": uint64(0),
"inactive_file": uint64(3),
"limit": uint64(2000),
"mapped_file": uint64(0),
"max_usage": uint64(1001),
"pgfault": uint64(2),
"pgmajfault": uint64(0),
"pgpgin": uint64(0),
"pgpgout": uint64(0),
"rss_huge": uint64(0),
"rss": uint64(0),
"total_active_anon": uint64(0),
"total_active_file": uint64(0),
"total_cache": uint64(0),
"total_inactive_anon": uint64(0),
"total_inactive_file": uint64(0),
"total_mapped_file": uint64(0),
"total_pgfault": uint64(0),
"total_pgmajfault": uint64(0),
"total_pgpgin": uint64(4),
"total_pgpgout": uint64(0),
"total_rss_huge": uint64(444),
"total_rss": uint64(44),
"total_unevictable": uint64(0),
"total_writeback": uint64(55),
"unevictable": uint64(0),
"usage_percent": float64(55.55),
"usage": uint64(1111),
"writeback": uint64(0),
}
acc.AssertContainsTaggedFields(t, "docker_container_mem", memfields, tags)
@ -158,108 +208,32 @@ func TestDockerGatherContainerStats(t *testing.T) {
acc.AssertDoesNotContainsTaggedFields(t, "docker_container_cpu", cpu3fields, cputags)
}
func testStats() *types.StatsJSON {
stats := &types.StatsJSON{}
stats.Read = time.Now()
stats.Networks = make(map[string]types.NetworkStats)
stats.CPUStats.OnlineCPUs = 2
stats.CPUStats.CPUUsage.PercpuUsage = []uint64{1, 1002, 0, 0}
stats.CPUStats.CPUUsage.UsageInUsermode = 100
stats.CPUStats.CPUUsage.TotalUsage = 500
stats.CPUStats.CPUUsage.UsageInKernelmode = 200
stats.CPUStats.SystemUsage = 100
stats.CPUStats.ThrottlingData.Periods = 1
func TestDocker_WindowsMemoryContainerStats(t *testing.T) {
var acc testutil.Accumulator
stats.PreCPUStats.CPUUsage.TotalUsage = 400
stats.PreCPUStats.SystemUsage = 50
stats.MemoryStats.Stats = make(map[string]uint64)
stats.MemoryStats.Stats["total_pgmajfault"] = 0
stats.MemoryStats.Stats["cache"] = 0
stats.MemoryStats.Stats["mapped_file"] = 0
stats.MemoryStats.Stats["total_inactive_file"] = 0
stats.MemoryStats.Stats["pagpgout"] = 0
stats.MemoryStats.Stats["rss"] = 0
stats.MemoryStats.Stats["total_mapped_file"] = 0
stats.MemoryStats.Stats["writeback"] = 0
stats.MemoryStats.Stats["unevictable"] = 0
stats.MemoryStats.Stats["pgpgin"] = 0
stats.MemoryStats.Stats["total_unevictable"] = 0
stats.MemoryStats.Stats["pgmajfault"] = 0
stats.MemoryStats.Stats["total_rss"] = 44
stats.MemoryStats.Stats["total_rss_huge"] = 444
stats.MemoryStats.Stats["total_write_back"] = 55
stats.MemoryStats.Stats["total_inactive_anon"] = 0
stats.MemoryStats.Stats["rss_huge"] = 0
stats.MemoryStats.Stats["hierarchical_memory_limit"] = 0
stats.MemoryStats.Stats["total_pgfault"] = 0
stats.MemoryStats.Stats["total_active_file"] = 0
stats.MemoryStats.Stats["active_anon"] = 0
stats.MemoryStats.Stats["total_active_anon"] = 0
stats.MemoryStats.Stats["total_pgpgout"] = 0
stats.MemoryStats.Stats["total_cache"] = 0
stats.MemoryStats.Stats["inactive_anon"] = 0
stats.MemoryStats.Stats["active_file"] = 1
stats.MemoryStats.Stats["pgfault"] = 2
stats.MemoryStats.Stats["inactive_file"] = 3
stats.MemoryStats.Stats["total_pgpgin"] = 4
stats.MemoryStats.MaxUsage = 1001
stats.MemoryStats.Usage = 1111
stats.MemoryStats.Failcnt = 1
stats.MemoryStats.Limit = 2000
stats.Networks["eth0"] = types.NetworkStats{
RxDropped: 1,
RxBytes: 2,
RxErrors: 3,
TxPackets: 4,
TxDropped: 1,
RxPackets: 2,
TxErrors: 3,
TxBytes: 4,
}
stats.Networks["eth1"] = types.NetworkStats{
RxDropped: 5,
RxBytes: 6,
RxErrors: 7,
TxPackets: 8,
TxDropped: 5,
RxPackets: 6,
TxErrors: 7,
TxBytes: 8,
}
sbr := types.BlkioStatEntry{
Major: 6,
Minor: 0,
Op: "read",
Value: 100,
}
sr := types.BlkioStatEntry{
Major: 6,
Minor: 0,
Op: "write",
Value: 101,
}
sr2 := types.BlkioStatEntry{
Major: 6,
Minor: 1,
Op: "write",
Value: 201,
}
stats.BlkioStats.IoServiceBytesRecursive = append(
stats.BlkioStats.IoServiceBytesRecursive, sbr)
stats.BlkioStats.IoServicedRecursive = append(
stats.BlkioStats.IoServicedRecursive, sr)
stats.BlkioStats.IoServicedRecursive = append(
stats.BlkioStats.IoServicedRecursive, sr2)
return stats
d := Docker{
newClient: func(string) (Client, error) {
return &MockClient{
InfoF: func(ctx context.Context) (types.Info, error) {
return info, nil
},
ContainerListF: func(ctx context.Context, options types.ContainerListOptions) ([]types.Container, error) {
return containerList, nil
},
ContainerStatsF: func(ctx context.Context, containerID string, stream bool) (types.ContainerStats, error) {
return containerStatsWindows(), nil
},
ContainerInspectF: func(ctx context.Context, containerID string) (types.ContainerJSON, error) {
return containerInspect, nil
},
}, nil
},
}
err := d.Gather(&acc)
require.NoError(t, err)
}
func TestDockerGatherLabels(t *testing.T) {
var gatherLabelsTests = []struct {
include []string
exclude []string
@ -277,12 +251,11 @@ var gatherLabelsTests = []struct {
{[]string{"*"}, []string{"*"}, []string{}, []string{"label1", "label2"}},
}
func TestDockerGatherLabels(t *testing.T) {
for _, tt := range gatherLabelsTests {
t.Run("", func(t *testing.T) {
var acc testutil.Accumulator
d := Docker{
client: nil,
testing: true,
newClient: newClient,
}
for _, label := range tt.include {
@ -308,9 +281,11 @@ func TestDockerGatherLabels(t *testing.T) {
label, tt.include, tt.exclude)
}
}
})
}
}
func TestContainerNames(t *testing.T) {
var gatherContainerNames = []struct {
include []string
exclude []string
@ -328,13 +303,12 @@ var gatherContainerNames = []struct {
{[]string{}, []string{"*"}, []string{""}, []string{"etcd", "etcd2"}},
}
func TestContainerNames(t *testing.T) {
for _, tt := range gatherContainerNames {
t.Run("", func(t *testing.T) {
var acc testutil.Accumulator
d := Docker{
client: nil,
testing: true,
newClient: newClient,
ContainerInclude: tt.include,
ContainerExclude: tt.exclude,
}
@ -375,14 +349,14 @@ func TestContainerNames(t *testing.T) {
}
}
}
})
}
}
func TestDockerGatherInfo(t *testing.T) {
var acc testutil.Accumulator
d := Docker{
client: nil,
testing: true,
newClient: newClient,
TagEnvironment: []string{"ENVVAR1", "ENVVAR2", "ENVVAR3", "ENVVAR5",
"ENVVAR6", "ENVVAR7", "ENVVAR8", "ENVVAR9"},
}
@ -441,41 +415,11 @@ func TestDockerGatherInfo(t *testing.T) {
acc.AssertContainsTaggedFields(t,
"docker_container_mem",
map[string]interface{}{
"total_pgpgout": uint64(0),
"usage_percent": float64(0),
"rss": uint64(0),
"total_writeback": uint64(0),
"active_anon": uint64(0),
"total_pgmafault": uint64(0),
"total_rss": uint64(0),
"total_unevictable": uint64(0),
"active_file": uint64(0),
"total_mapped_file": uint64(0),
"pgpgin": uint64(0),
"total_active_file": uint64(0),
"total_active_anon": uint64(0),
"total_cache": uint64(0),
"inactive_anon": uint64(0),
"pgmajfault": uint64(0),
"total_inactive_anon": uint64(0),
"total_rss_huge": uint64(0),
"rss_huge": uint64(0),
"hierarchical_memory_limit": uint64(0),
"pgpgout": uint64(0),
"unevictable": uint64(0),
"total_inactive_file": uint64(0),
"writeback": uint64(0),
"total_pgfault": uint64(0),
"total_pgpgin": uint64(0),
"cache": uint64(0),
"mapped_file": uint64(0),
"inactive_file": uint64(0),
"max_usage": uint64(0),
"fail_count": uint64(0),
"pgfault": uint64(0),
"usage": uint64(0),
"limit": uint64(18935443456),
"container_id": "b7dfbb9478a6ae55e237d4d74f8bbb753f0817192b5081334dc78476296e2173",
"limit": uint64(18935443456),
"max_usage": uint64(0),
"usage": uint64(0),
"usage_percent": float64(0),
},
map[string]string{
"engine_host": "absol",
@ -490,6 +434,4 @@ func TestDockerGatherInfo(t *testing.T) {
"label2": "test_value_2",
},
)
//fmt.Print(info)
}

406
plugins/inputs/docker/docker_testdata.go Normal file
View File

@ -0,0 +1,406 @@
package docker
import (
"io/ioutil"
"strings"
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/api/types/registry"
)
var info = types.Info{
Containers: 108,
ContainersRunning: 98,
ContainersStopped: 6,
ContainersPaused: 3,
OomKillDisable: false,
SystemTime: "2016-02-24T00:55:09.15073105-05:00",
NEventsListener: 0,
ID: "5WQQ:TFWR:FDNG:OKQ3:37Y4:FJWG:QIKK:623T:R3ME:QTKB:A7F7:OLHD",
Debug: false,
LoggingDriver: "json-file",
KernelVersion: "4.3.0-1-amd64",
IndexServerAddress: "https://index.docker.io/v1/",
MemTotal: 3840757760,
Images: 199,
CPUCfsQuota: true,
Name: "absol",
SwapLimit: false,
IPv4Forwarding: true,
ExperimentalBuild: false,
CPUCfsPeriod: true,
RegistryConfig: &registry.ServiceConfig{
IndexConfigs: map[string]*registry.IndexInfo{
"docker.io": {
Name: "docker.io",
Mirrors: []string{},
Official: true,
Secure: true,
},
}, InsecureRegistryCIDRs: []*registry.NetIPNet{{IP: []byte{127, 0, 0, 0}, Mask: []byte{255, 0, 0, 0}}}, Mirrors: []string{}},
OperatingSystem: "Linux Mint LMDE (containerized)",
BridgeNfIptables: true,
HTTPSProxy: "",
Labels: []string{},
MemoryLimit: false,
DriverStatus: [][2]string{{"Pool Name", "docker-8:1-1182287-pool"}, {"Pool Blocksize", "65.54 kB"}, {"Backing Filesystem", "extfs"}, {"Data file", "/dev/loop0"}, {"Metadata file", "/dev/loop1"}, {"Data Space Used", "17.3 GB"}, {"Data Space Total", "107.4 GB"}, {"Data Space Available", "36.53 GB"}, {"Metadata Space Used", "20.97 MB"}, {"Metadata Space Total", "2.147 GB"}, {"Metadata Space Available", "2.127 GB"}, {"Udev Sync Supported", "true"}, {"Deferred Removal Enabled", "false"}, {"Data loop file", "/var/lib/docker/devicemapper/devicemapper/data"}, {"Metadata loop file", "/var/lib/docker/devicemapper/devicemapper/metadata"}, {"Library Version", "1.02.115 (2016-01-25)"}},
NFd: 19,
HTTPProxy: "",
Driver: "devicemapper",
NGoroutines: 39,
NCPU: 4,
DockerRootDir: "/var/lib/docker",
NoProxy: "",
BridgeNfIP6tables: true,
}
var containerList = []types.Container{
types.Container{
ID: "e2173b9478a6ae55e237d4d74f8bbb753f0817192b5081334dc78476296b7dfb",
Names: []string{"/etcd"},
Image: "quay.io/coreos/etcd:v2.2.2",
Command: "/etcd -name etcd0 -advertise-client-urls http://localhost:2379 -listen-client-urls http://0.0.0.0:2379",
Created: 1455941930,
Status: "Up 4 hours",
Ports: []types.Port{
types.Port{
PrivatePort: 7001,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 4001,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 2380,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 2379,
PublicPort: 2379,
Type: "tcp",
IP: "0.0.0.0",
},
},
Labels: map[string]string{
"label1": "test_value_1",
"label2": "test_value_2",
},
SizeRw: 0,
SizeRootFs: 0,
},
types.Container{
ID: "b7dfbb9478a6ae55e237d4d74f8bbb753f0817192b5081334dc78476296e2173",
Names: []string{"/etcd2"},
Image: "quay.io:4443/coreos/etcd:v2.2.2",
Command: "/etcd -name etcd2 -advertise-client-urls http://localhost:2379 -listen-client-urls http://0.0.0.0:2379",
Created: 1455941933,
Status: "Up 4 hours",
Ports: []types.Port{
types.Port{
PrivatePort: 7002,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 4002,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 2381,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 2382,
PublicPort: 2382,
Type: "tcp",
IP: "0.0.0.0",
},
},
Labels: map[string]string{
"label1": "test_value_1",
"label2": "test_value_2",
},
SizeRw: 0,
SizeRootFs: 0,
},
}
func containerStats() types.ContainerStats {
var stat types.ContainerStats
jsonStat := `
{
"blkio_stats": {
"io_service_bytes_recursive": [
{
"major": 252,
"minor": 1,
"op": "Read",
"value": 753664
},
{
"major": 252,
"minor": 1,
"op": "Write"
},
{
"major": 252,
"minor": 1,
"op": "Sync"
},
{
"major": 252,
"minor": 1,
"op": "Async",
"value": 753664
},
{
"major": 252,
"minor": 1,
"op": "Total",
"value": 753664
}
],
"io_serviced_recursive": [
{
"major": 252,
"minor": 1,
"op": "Read",
"value": 26
},
{
"major": 252,
"minor": 1,
"op": "Write"
},
{
"major": 252,
"minor": 1,
"op": "Sync"
},
{
"major": 252,
"minor": 1,
"op": "Async",
"value": 26
},
{
"major": 252,
"minor": 1,
"op": "Total",
"value": 26
}
]
},
"cpu_stats": {
"cpu_usage": {
"percpu_usage": [
17871,
4959158,
1646137,
1231652,
11829401,
244656,
369972,
0
],
"total_usage": 20298847,
"usage_in_usermode": 10000000
},
"system_cpu_usage": 24052607520000000,
"throttling_data": {}
},
"memory_stats": {
"limit": 18935443456,
"stats": {}
},
"precpu_stats": {
"cpu_usage": {
"percpu_usage": [
17871,
4959158,
1646137,
1231652,
11829401,
244656,
369972,
0
],
"total_usage": 20298847,
"usage_in_usermode": 10000000
},
"system_cpu_usage": 24052599550000000,
"throttling_data": {}
},
"read": "2016-02-24T11:42:27.472459608-05:00"
}`
stat.Body = ioutil.NopCloser(strings.NewReader(jsonStat))
return stat
}
func testStats() *types.StatsJSON {
stats := &types.StatsJSON{}
stats.Read = time.Now()
stats.Networks = make(map[string]types.NetworkStats)
stats.CPUStats.OnlineCPUs = 2
stats.CPUStats.CPUUsage.PercpuUsage = []uint64{1, 1002, 0, 0}
stats.CPUStats.CPUUsage.UsageInUsermode = 100
stats.CPUStats.CPUUsage.TotalUsage = 500
stats.CPUStats.CPUUsage.UsageInKernelmode = 200
stats.CPUStats.SystemUsage = 100
stats.CPUStats.ThrottlingData.Periods = 1
stats.PreCPUStats.CPUUsage.TotalUsage = 400
stats.PreCPUStats.SystemUsage = 50
stats.MemoryStats.Stats = make(map[string]uint64)
stats.MemoryStats.Stats["active_anon"] = 0
stats.MemoryStats.Stats["active_file"] = 1
stats.MemoryStats.Stats["cache"] = 0
stats.MemoryStats.Stats["hierarchical_memory_limit"] = 0
stats.MemoryStats.Stats["inactive_anon"] = 0
stats.MemoryStats.Stats["inactive_file"] = 3
stats.MemoryStats.Stats["mapped_file"] = 0
stats.MemoryStats.Stats["pgfault"] = 2
stats.MemoryStats.Stats["pgmajfault"] = 0
stats.MemoryStats.Stats["pgpgin"] = 0
stats.MemoryStats.Stats["pgpgout"] = 0
stats.MemoryStats.Stats["rss"] = 0
stats.MemoryStats.Stats["rss_huge"] = 0
stats.MemoryStats.Stats["total_active_anon"] = 0
stats.MemoryStats.Stats["total_active_file"] = 0
stats.MemoryStats.Stats["total_cache"] = 0
stats.MemoryStats.Stats["total_inactive_anon"] = 0
stats.MemoryStats.Stats["total_inactive_file"] = 0
stats.MemoryStats.Stats["total_mapped_file"] = 0
stats.MemoryStats.Stats["total_pgfault"] = 0
stats.MemoryStats.Stats["total_pgmajfault"] = 0
stats.MemoryStats.Stats["total_pgpgin"] = 4
stats.MemoryStats.Stats["total_pgpgout"] = 0
stats.MemoryStats.Stats["total_rss"] = 44
stats.MemoryStats.Stats["total_rss_huge"] = 444
stats.MemoryStats.Stats["total_unevictable"] = 0
stats.MemoryStats.Stats["total_writeback"] = 55
stats.MemoryStats.Stats["unevictable"] = 0
stats.MemoryStats.Stats["writeback"] = 0
stats.MemoryStats.MaxUsage = 1001
stats.MemoryStats.Usage = 1111
stats.MemoryStats.Failcnt = 1
stats.MemoryStats.Limit = 2000
stats.Networks["eth0"] = types.NetworkStats{
RxDropped: 1,
RxBytes: 2,
RxErrors: 3,
TxPackets: 4,
TxDropped: 1,
RxPackets: 2,
TxErrors: 3,
TxBytes: 4,
}
stats.Networks["eth1"] = types.NetworkStats{
RxDropped: 5,
RxBytes: 6,
RxErrors: 7,
TxPackets: 8,
TxDropped: 5,
RxPackets: 6,
TxErrors: 7,
TxBytes: 8,
}
sbr := types.BlkioStatEntry{
Major: 6,
Minor: 0,
Op: "read",
Value: 100,
}
sr := types.BlkioStatEntry{
Major: 6,
Minor: 0,
Op: "write",
Value: 101,
}
sr2 := types.BlkioStatEntry{
Major: 6,
Minor: 1,
Op: "write",
Value: 201,
}
stats.BlkioStats.IoServiceBytesRecursive = append(
stats.BlkioStats.IoServiceBytesRecursive, sbr)
stats.BlkioStats.IoServicedRecursive = append(
stats.BlkioStats.IoServicedRecursive, sr)
stats.BlkioStats.IoServicedRecursive = append(
stats.BlkioStats.IoServicedRecursive, sr2)
return stats
}
func containerStatsWindows() types.ContainerStats {
var stat types.ContainerStats
jsonStat := `
{
"read":"2017-01-11T08:32:46.2413794Z",
"preread":"0001-01-01T00:00:00Z",
"num_procs":64,
"cpu_stats":{
"cpu_usage":{
"total_usage":536718750,
"usage_in_kernelmode":390468750,
"usage_in_usermode":390468750
},
"throttling_data":{
"periods":0,
"throttled_periods":0,
"throttled_time":0
}
},
"precpu_stats":{
"cpu_usage":{
"total_usage":0,
"usage_in_kernelmode":0,
"usage_in_usermode":0
},
"throttling_data":{
"periods":0,
"throttled_periods":0,
"throttled_time":0
}
},
"memory_stats":{
"commitbytes":77160448,
"commitpeakbytes":105000960,
"privateworkingset":59961344
},
"name":"/gt_test_iis",
}`
stat.Body = ioutil.NopCloser(strings.NewReader(jsonStat))
return stat
}
var containerInspect = types.ContainerJSON{
Config: &container.Config{
Env: []string{
"ENVVAR1=loremipsum",
"ENVVAR1FOO=loremipsum",
"ENVVAR2=dolorsitamet",
"ENVVAR3==ubuntu:10.04",
"ENVVAR4",
"ENVVAR5=",
"ENVVAR6= ",
"ENVVAR7=ENVVAR8=ENVVAR9",
"PATH=/bin:/sbin",
},
},
}

172
plugins/inputs/docker/fake_client.go
View File

@ -1,172 +0,0 @@
package docker
import (
"context"
"io/ioutil"
"strings"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/api/types/registry"
)
type FakeDockerClient struct {
}
func (d FakeDockerClient) Info(ctx context.Context) (types.Info, error) {
env := types.Info{
Containers: 108,
ContainersRunning: 98,
ContainersStopped: 6,
ContainersPaused: 3,
OomKillDisable: false,
SystemTime: "2016-02-24T00:55:09.15073105-05:00",
NEventsListener: 0,
ID: "5WQQ:TFWR:FDNG:OKQ3:37Y4:FJWG:QIKK:623T:R3ME:QTKB:A7F7:OLHD",
Debug: false,
LoggingDriver: "json-file",
KernelVersion: "4.3.0-1-amd64",
IndexServerAddress: "https://index.docker.io/v1/",
MemTotal: 3840757760,
Images: 199,
CPUCfsQuota: true,
Name: "absol",
SwapLimit: false,
IPv4Forwarding: true,
ExperimentalBuild: false,
CPUCfsPeriod: true,
RegistryConfig: &registry.ServiceConfig{
IndexConfigs: map[string]*registry.IndexInfo{
"docker.io": {
Name: "docker.io",
Mirrors: []string{},
Official: true,
Secure: true,
},
}, InsecureRegistryCIDRs: []*registry.NetIPNet{{IP: []byte{127, 0, 0, 0}, Mask: []byte{255, 0, 0, 0}}}, Mirrors: []string{}},
OperatingSystem: "Linux Mint LMDE (containerized)",
BridgeNfIptables: true,
HTTPSProxy: "",
Labels: []string{},
MemoryLimit: false,
DriverStatus: [][2]string{{"Pool Name", "docker-8:1-1182287-pool"}, {"Pool Blocksize", "65.54 kB"}, {"Backing Filesystem", "extfs"}, {"Data file", "/dev/loop0"}, {"Metadata file", "/dev/loop1"}, {"Data Space Used", "17.3 GB"}, {"Data Space Total", "107.4 GB"}, {"Data Space Available", "36.53 GB"}, {"Metadata Space Used", "20.97 MB"}, {"Metadata Space Total", "2.147 GB"}, {"Metadata Space Available", "2.127 GB"}, {"Udev Sync Supported", "true"}, {"Deferred Removal Enabled", "false"}, {"Data loop file", "/var/lib/docker/devicemapper/devicemapper/data"}, {"Metadata loop file", "/var/lib/docker/devicemapper/devicemapper/metadata"}, {"Library Version", "1.02.115 (2016-01-25)"}},
NFd: 19,
HTTPProxy: "",
Driver: "devicemapper",
NGoroutines: 39,
NCPU: 4,
DockerRootDir: "/var/lib/docker",
NoProxy: "",
BridgeNfIP6tables: true,
}
return env, nil
}
func (d FakeDockerClient) ContainerList(octx context.Context, options types.ContainerListOptions) ([]types.Container, error) {
container1 := types.Container{
ID: "e2173b9478a6ae55e237d4d74f8bbb753f0817192b5081334dc78476296b7dfb",
Names: []string{"/etcd"},
Image: "quay.io/coreos/etcd:v2.2.2",
Command: "/etcd -name etcd0 -advertise-client-urls http://localhost:2379 -listen-client-urls http://0.0.0.0:2379",
Created: 1455941930,
Status: "Up 4 hours",
Ports: []types.Port{
types.Port{
PrivatePort: 7001,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 4001,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 2380,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 2379,
PublicPort: 2379,
Type: "tcp",
IP: "0.0.0.0",
},
},
Labels: map[string]string{
"label1": "test_value_1",
"label2": "test_value_2",
},
SizeRw: 0,
SizeRootFs: 0,
}
container2 := types.Container{
ID: "b7dfbb9478a6ae55e237d4d74f8bbb753f0817192b5081334dc78476296e2173",
Names: []string{"/etcd2"},
Image: "quay.io:4443/coreos/etcd:v2.2.2",
Command: "/etcd -name etcd2 -advertise-client-urls http://localhost:2379 -listen-client-urls http://0.0.0.0:2379",
Created: 1455941933,
Status: "Up 4 hours",
Ports: []types.Port{
types.Port{
PrivatePort: 7002,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 4002,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 2381,
PublicPort: 0,
Type: "tcp",
},
types.Port{
PrivatePort: 2382,
PublicPort: 2382,
Type: "tcp",
IP: "0.0.0.0",
},
},
Labels: map[string]string{
"label1": "test_value_1",
"label2": "test_value_2",
},
SizeRw: 0,
SizeRootFs: 0,
}
containers := []types.Container{container1, container2}
return containers, nil
//#{e6a96c84ca91a5258b7cb752579fb68826b68b49ff957487695cd4d13c343b44 titilambert/snmpsim /bin/sh -c 'snmpsimd --agent-udpv4-endpoint=0.0.0.0:31161 --process-user=root --process-group=user' 1455724831 Up 4 hours [{31161 31161 udp 0.0.0.0}] 0 0 [/snmp] map[]}]2016/02/24 01:05:01 Gathered metrics, (3s interval), from 1 inputs in 1.233836656s
}
func (d FakeDockerClient) ContainerStats(ctx context.Context, containerID string, stream bool) (types.ContainerStats, error) {
var stat types.ContainerStats
jsonStat := `{"read":"2016-02-24T11:42:27.472459608-05:00","memory_stats":{"stats":{},"limit":18935443456},"blkio_stats":{"io_service_bytes_recursive":[{"major":252,"minor":1,"op":"Read","value":753664},{"major":252,"minor":1,"op":"Write"},{"major":252,"minor":1,"op":"Sync"},{"major":252,"minor":1,"op":"Async","value":753664},{"major":252,"minor":1,"op":"Total","value":753664}],"io_serviced_recursive":[{"major":252,"minor":1,"op":"Read","value":26},{"major":252,"minor":1,"op":"Write"},{"major":252,"minor":1,"op":"Sync"},{"major":252,"minor":1,"op":"Async","value":26},{"major":252,"minor":1,"op":"Total","value":26}]},"cpu_stats":{"cpu_usage":{"percpu_usage":[17871,4959158,1646137,1231652,11829401,244656,369972,0],"usage_in_usermode":10000000,"total_usage":20298847},"system_cpu_usage":24052607520000000,"throttling_data":{}},"precpu_stats":{"cpu_usage":{"percpu_usage":[17871,4959158,1646137,1231652,11829401,244656,369972,0],"usage_in_usermode":10000000,"total_usage":20298847},"system_cpu_usage":24052599550000000,"throttling_data":{}}}`
stat.Body = ioutil.NopCloser(strings.NewReader(jsonStat))
return stat, nil
}
func (d FakeDockerClient) ContainerInspect(ctx context.Context, containerID string) (types.ContainerJSON, error) {
json := types.ContainerJSON{
Config: &container.Config{
Env: []string{
"ENVVAR1=loremipsum",
"ENVVAR1FOO=loremipsum",
"ENVVAR2=dolorsitamet",
"ENVVAR3==ubuntu:10.04",
"ENVVAR4",
"ENVVAR5=",
"ENVVAR6= ",
"ENVVAR7=ENVVAR8=ENVVAR9",
"PATH=/bin:/sbin",
},
},
}
return json, nil
}

55
plugins/inputs/docker/stats_helpers.go Normal file
View File

@ -0,0 +1,55 @@
// Helper functions copied from
// https://github.com/docker/cli/blob/master/cli/command/container/stats_helpers.go
package docker
import "github.com/docker/docker/api/types"
func calculateCPUPercentUnix(previousCPU, previousSystem uint64, v *types.StatsJSON) float64 {
var (
cpuPercent = 0.0
// calculate the change for the cpu usage of the container in between readings
cpuDelta = float64(v.CPUStats.CPUUsage.TotalUsage) - float64(previousCPU)
// calculate the change for the entire system between readings
systemDelta = float64(v.CPUStats.SystemUsage) - float64(previousSystem)
onlineCPUs = float64(v.CPUStats.OnlineCPUs)
)
if onlineCPUs == 0.0 {
onlineCPUs = float64(len(v.CPUStats.CPUUsage.PercpuUsage))
}
if systemDelta > 0.0 && cpuDelta > 0.0 {
cpuPercent = (cpuDelta / systemDelta) * onlineCPUs * 100.0
}
return cpuPercent
}
func calculateCPUPercentWindows(v *types.StatsJSON) float64 {
// Max number of 100ns intervals between the previous time read and now
possIntervals := uint64(v.Read.Sub(v.PreRead).Nanoseconds()) // Start with number of ns intervals
possIntervals /= 100 // Convert to number of 100ns intervals
possIntervals *= uint64(v.NumProcs) // Multiple by the number of processors
// Intervals used
intervalsUsed := v.CPUStats.CPUUsage.TotalUsage - v.PreCPUStats.CPUUsage.TotalUsage
// Percentage avoiding divide-by-zero
if possIntervals > 0 {
return float64(intervalsUsed) / float64(possIntervals) * 100.0
}
return 0.00
}
// calculateMemUsageUnixNoCache calculate memory usage of the container.
// Page cache is intentionally excluded to avoid misinterpretation of the output.
func calculateMemUsageUnixNoCache(mem types.MemoryStats) float64 {
return float64(mem.Usage - mem.Stats["cache"])
}
func calculateMemPercentUnixNoCache(limit float64, usedNoCache float64) float64 {
// MemoryStats.Limit will never be 0 unless the container is not running and we haven't
// got any data from cgroup
if limit != 0 {
return usedNoCache / limit * 100.0
}
return 0
}