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Add Metrics for Running PipelinesRuns at Pipeline and Namespace level
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We have added the PipelineRun metric at pipeline and namespace level.

Fix Lint Error

Fix Lint Error

Adding Tests for better coverage of different running-pipelinerun use cases.

Fix Lint
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@pramodbindal
pramodbindal committed Oct 17, 2024
1 parent 0649270 commit e596d5e
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Showing 8 changed files with 350 additions and 18 deletions.
1 change: 1 addition & 0 deletions config/config-observability.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -59,3 +59,4 @@ data:
metrics.pipelinerun.level: "pipeline"
metrics.pipelinerun.duration-type: "histogram"
metrics.count.enable-reason: "false"
metrics.running-pipelinerun.level: ""
31 changes: 18 additions & 13 deletions docs/metrics.md
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Expand Up @@ -41,26 +41,31 @@ A sample config-map has been provided as [config-observability](./../config/conf
metrics.taskrun.level: "task"
metrics.taskrun.duration-type: "histogram"
metrics.pipelinerun.level: "pipeline"
metrics.running-pipelinerun.level: ""
metrics.pipelinerun.duration-type: "histogram"
metrics.count.enable-reason: "false"
```
Following values are available in the configmap:
| configmap data | value | description |
| -- | ----------- | ----------- |
| metrics.taskrun.level | `taskrun` | Level of metrics is taskrun |
| metrics.taskrun.level | `task` | Level of metrics is task and taskrun label isn't present in the metrics |
| metrics.taskrun.level | `namespace` | Level of metrics is namespace, and task and taskrun label isn't present in the metrics
| metrics.pipelinerun.level | `pipelinerun` | Level of metrics is pipelinerun |
| metrics.pipelinerun.level | `pipeline` | Level of metrics is pipeline and pipelinerun label isn't present in the metrics |
| metrics.pipelinerun.level | `namespace` | Level of metrics is namespace, pipeline and pipelinerun label isn't present in the metrics |
| metrics.taskrun.duration-type | `histogram` | `tekton_pipelines_controller_pipelinerun_taskrun_duration_seconds` and `tekton_pipelines_controller_taskrun_duration_seconds` is of type histogram |
| configmap data | value | description |
| -- | ----------- |--------------------------------------------------------------------------------------------------------------------------------------------------------------|
| metrics.taskrun.level | `taskrun` | Level of metrics is taskrun |
| metrics.taskrun.level | `task` | Level of metrics is task and taskrun label isn't present in the metrics |
| metrics.taskrun.level | `namespace` | Level of metrics is namespace, and task and taskrun label isn't present in the metrics
| metrics.pipelinerun.level | `pipelinerun` | Level of metrics is pipelinerun |
| metrics.pipelinerun.level | `pipeline` | Level of metrics is pipeline and pipelinerun label isn't present in the metrics |
| metrics.pipelinerun.level | `namespace` | Level of metrics is namespace, pipeline and pipelinerun label isn't present in the metrics |
| metrics.running-pipelinerun.level | `pipelinerun` | Level of running-pipelinerun metrics is pipelinerun |
| metrics.running-pipelinerun.level | `pipeline` | Level of running-pipelinerun metrics is pipeline and pipelinerun label isn't present in the metrics |
| metrics.running-pipelinerun.level | `namespace` | Level of running-pipelinerun metrics is namespace, pipeline and pipelinerun label isn't present in the metrics |
| metrics.running-pipelinerun.level | `` | Level of running-pipelinerun metrics is cluster, namespace, pipeline and pipelinerun label isn't present in the metrics. |
| metrics.taskrun.duration-type | `histogram` | `tekton_pipelines_controller_pipelinerun_taskrun_duration_seconds` and `tekton_pipelines_controller_taskrun_duration_seconds` is of type histogram |
| metrics.taskrun.duration-type | `lastvalue` | `tekton_pipelines_controller_pipelinerun_taskrun_duration_seconds` and `tekton_pipelines_controller_taskrun_duration_seconds` is of type gauge or lastvalue |
| metrics.pipelinerun.duration-type | `histogram` | `tekton_pipelines_controller_pipelinerun_duration_seconds` is of type histogram |
| metrics.pipelinerun.duration-type | `lastvalue` | `tekton_pipelines_controller_pipelinerun_duration_seconds` is of type gauge or lastvalue |
| metrics.count.enable-reason | `false` | Sets if the `reason` label should be included on count metrics |
| metrics.taskrun.throttle.enable-namespace | `false` | Sets if the `namespace` label should be included on the `tekton_pipelines_controller_running_taskruns_throttled_by_quota` metric |
| metrics.pipelinerun.duration-type | `histogram` | `tekton_pipelines_controller_pipelinerun_duration_seconds` is of type histogram |
| metrics.pipelinerun.duration-type | `lastvalue` | `tekton_pipelines_controller_pipelinerun_duration_seconds` is of type gauge or lastvalue |
| metrics.count.enable-reason | `false` | Sets if the `reason` label should be included on count metrics |
| metrics.taskrun.throttle.enable-namespace | `false` | Sets if the `namespace` label should be included on the `tekton_pipelines_controller_running_taskruns_throttled_by_quota` metric |

Histogram value isn't available when pipelinerun or taskrun labels are selected. The Lastvalue or Gauge will be provided. Histogram would serve no purpose because it would generate a single bar. TaskRun and PipelineRun level metrics aren't recommended because they lead to an unbounded cardinality which degrades the observability database.

Expand Down
11 changes: 11 additions & 0 deletions pkg/apis/config/metrics.go
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,9 @@ const (
// metricsPipelinerunLevel determines to what level to aggregate metrics
// for pipelinerun
metricsPipelinerunLevelKey = "metrics.pipelinerun.level"
// metricsRunningPipelinerunLevelKey determines to what level to aggregate metrics
// for running pipelineruns
metricsRunningPipelinerunLevelKey = "metrics.running-pipelinerun.level"
// metricsDurationTaskrunType determines what type of
// metrics to use for aggregating duration for taskrun
metricsDurationTaskrunType = "metrics.taskrun.duration-type"
Expand All @@ -55,6 +58,9 @@ const (
// DefaultPipelinerunLevel determines to what level to aggregate metrics
// when it isn't specified in configmap
DefaultPipelinerunLevel = PipelinerunLevelAtPipeline
// DefaultRunningPipelinerunLevel determines to what level to aggregate metrics
// when it isn't specified in configmap
DefaultRunningPipelinerunLevel = ""
// PipelinerunLevelAtPipelinerun specify that aggregation will be done at
// pipelinerun level
PipelinerunLevelAtPipelinerun = "pipelinerun"
Expand Down Expand Up @@ -96,6 +102,7 @@ var DefaultMetrics, _ = newMetricsFromMap(map[string]string{})
type Metrics struct {
TaskrunLevel string
PipelinerunLevel string
RunningPipelinerunLevel string
DurationTaskrunType string
DurationPipelinerunType string
CountWithReason bool
Expand Down Expand Up @@ -130,6 +137,7 @@ func newMetricsFromMap(cfgMap map[string]string) (*Metrics, error) {
tc := Metrics{
TaskrunLevel: DefaultTaskrunLevel,
PipelinerunLevel: DefaultPipelinerunLevel,
RunningPipelinerunLevel: DefaultRunningPipelinerunLevel,
DurationTaskrunType: DefaultDurationTaskrunType,
DurationPipelinerunType: DefaultDurationPipelinerunType,
CountWithReason: false,
Expand All @@ -143,6 +151,9 @@ func newMetricsFromMap(cfgMap map[string]string) (*Metrics, error) {
if pipelinerunLevel, ok := cfgMap[metricsPipelinerunLevelKey]; ok {
tc.PipelinerunLevel = pipelinerunLevel
}
if runningPipelinerunLevel, ok := cfgMap[metricsRunningPipelinerunLevelKey]; ok {
tc.RunningPipelinerunLevel = runningPipelinerunLevel
}
if durationTaskrun, ok := cfgMap[metricsDurationTaskrunType]; ok {
tc.DurationTaskrunType = durationTaskrun
}
Expand Down
5 changes: 5 additions & 0 deletions pkg/apis/config/metrics_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@ func TestNewMetricsFromConfigMap(t *testing.T) {
expectedConfig: &config.Metrics{
TaskrunLevel: config.TaskrunLevelAtTaskrun,
PipelinerunLevel: config.PipelinerunLevelAtPipelinerun,
RunningPipelinerunLevel: config.DefaultRunningPipelinerunLevel,
DurationTaskrunType: config.DurationPipelinerunTypeHistogram,
DurationPipelinerunType: config.DurationPipelinerunTypeHistogram,
CountWithReason: false,
Expand All @@ -47,6 +48,7 @@ func TestNewMetricsFromConfigMap(t *testing.T) {
expectedConfig: &config.Metrics{
TaskrunLevel: config.TaskrunLevelAtNS,
PipelinerunLevel: config.PipelinerunLevelAtNS,
RunningPipelinerunLevel: config.PipelinerunLevelAtNS,
DurationTaskrunType: config.DurationTaskrunTypeHistogram,
DurationPipelinerunType: config.DurationPipelinerunTypeLastValue,
CountWithReason: false,
Expand All @@ -58,6 +60,7 @@ func TestNewMetricsFromConfigMap(t *testing.T) {
expectedConfig: &config.Metrics{
TaskrunLevel: config.TaskrunLevelAtNS,
PipelinerunLevel: config.PipelinerunLevelAtNS,
RunningPipelinerunLevel: config.DefaultRunningPipelinerunLevel,
DurationTaskrunType: config.DurationTaskrunTypeHistogram,
DurationPipelinerunType: config.DurationPipelinerunTypeLastValue,
CountWithReason: true,
Expand All @@ -69,6 +72,7 @@ func TestNewMetricsFromConfigMap(t *testing.T) {
expectedConfig: &config.Metrics{
TaskrunLevel: config.TaskrunLevelAtNS,
PipelinerunLevel: config.PipelinerunLevelAtNS,
RunningPipelinerunLevel: config.PipelinerunLevelAtPipeline,
DurationTaskrunType: config.DurationTaskrunTypeHistogram,
DurationPipelinerunType: config.DurationPipelinerunTypeLastValue,
CountWithReason: true,
Expand All @@ -88,6 +92,7 @@ func TestNewMetricsFromEmptyConfigMap(t *testing.T) {
expectedConfig := &config.Metrics{
TaskrunLevel: config.TaskrunLevelAtTask,
PipelinerunLevel: config.PipelinerunLevelAtPipeline,
RunningPipelinerunLevel: config.DefaultRunningPipelinerunLevel,
DurationTaskrunType: config.DurationPipelinerunTypeHistogram,
DurationPipelinerunType: config.DurationPipelinerunTypeHistogram,
CountWithReason: false,
Expand Down
1 change: 1 addition & 0 deletions pkg/apis/config/testdata/config-observability-namespacelevel.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -27,4 +27,5 @@ data:
metrics.taskrun.level: "namespace"
metrics.taskrun.duration-type: "histogram"
metrics.pipelinerun.level: "namespace"
metrics.running-pipelinerun.level: "namespace"
metrics.pipelinerun.duration-type: "lastvalue"
1 change: 1 addition & 0 deletions pkg/apis/config/testdata/config-observability-throttle.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@ data:
metrics.taskrun.level: "namespace"
metrics.taskrun.duration-type: "histogram"
metrics.pipelinerun.level: "namespace"
metrics.running-pipelinerun.level: "pipeline"
metrics.pipelinerun.duration-type: "lastvalue"
metrics.count.enable-reason: "true"
metrics.taskrun.throttle.enable-namespace: "true"
64 changes: 59 additions & 5 deletions pkg/pipelinerunmetrics/metrics.go
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,13 @@ import (
"knative.dev/pkg/metrics"
)

const (
runningPRLevelPipelinerun = "pipelinerun"
runningPRLevelPipeline = "pipeline"
runningPRLevelNamespace = "namespace"
runningPRLevelCluster = ""
)

var (
pipelinerunTag = tag.MustNewKey("pipelinerun")
pipelineTag = tag.MustNewKey("pipeline")
Expand Down Expand Up @@ -134,6 +141,7 @@ func NewRecorder(ctx context.Context) (*Recorder, error) {
}

cfg := config.FromContextOrDefaults(ctx)
r.cfg = cfg.Metrics
errRegistering = viewRegister(cfg.Metrics)
if errRegistering != nil {
r.initialized = false
Expand All @@ -149,7 +157,6 @@ func viewRegister(cfg *config.Metrics) error {
defer r.mutex.Unlock()

var prunTag []tag.Key

switch cfg.PipelinerunLevel {
case config.PipelinerunLevelAtPipelinerun:
prunTag = []tag.Key{pipelinerunTag, pipelineTag}
Expand All @@ -164,6 +171,18 @@ func viewRegister(cfg *config.Metrics) error {
return errors.New("invalid config for PipelinerunLevel: " + cfg.PipelinerunLevel)
}

var runningPRTag []tag.Key
switch cfg.RunningPipelinerunLevel {
case config.PipelinerunLevelAtPipelinerun:
runningPRTag = []tag.Key{pipelinerunTag, pipelineTag, namespaceTag}
case config.PipelinerunLevelAtPipeline:
runningPRTag = []tag.Key{pipelineTag, namespaceTag}
case config.PipelinerunLevelAtNS:
runningPRTag = []tag.Key{namespaceTag}
default:
runningPRTag = []tag.Key{}
}

distribution := view.Distribution(10, 30, 60, 300, 900, 1800, 3600, 5400, 10800, 21600, 43200, 86400)

if cfg.PipelinerunLevel == config.PipelinerunLevelAtPipelinerun {
Expand Down Expand Up @@ -213,6 +232,7 @@ func viewRegister(cfg *config.Metrics) error {
Description: runningPRs.Description(),
Measure: runningPRs,
Aggregation: view.LastValue(),
TagKeys: runningPRTag,
}

runningPRsWaitingOnPipelineResolutionCountView = &view.View{
Expand Down Expand Up @@ -326,7 +346,7 @@ func (r *Recorder) updateConfig(cfg *config.Metrics) {

// DurationAndCount logs the duration of PipelineRun execution and
// count for number of PipelineRuns succeed or failed
// returns an error if its failed to log the metrics
// returns an error if it fails to log the metrics
func (r *Recorder) DurationAndCount(pr *v1.PipelineRun, beforeCondition *apis.Condition) error {
if !r.initialized {
return fmt.Errorf("ignoring the metrics recording for %s , failed to initialize the metrics recorder", pr.Name)
Expand Down Expand Up @@ -379,11 +399,10 @@ func (r *Recorder) DurationAndCount(pr *v1.PipelineRun, beforeCondition *apis.Co
}

// RunningPipelineRuns logs the number of PipelineRuns running right now
// returns an error if its failed to log the metrics
// returns an error if it fails to log the metrics
func (r *Recorder) RunningPipelineRuns(lister listers.PipelineRunLister) error {
r.mutex.Lock()
defer r.mutex.Unlock()

if !r.initialized {
return errors.New("ignoring the metrics recording, failed to initialize the metrics recorder")
}
Expand All @@ -396,9 +415,38 @@ func (r *Recorder) RunningPipelineRuns(lister listers.PipelineRunLister) error {
var runningPipelineRuns int
var trsWaitResolvingTaskRef int
var prsWaitResolvingPipelineRef int
countMap := map[string]int{}

for _, pr := range prs {
pipelineName := getPipelineTagName(pr)
pipelineRunKey := ""
mutators := []tag.Mutator{
tag.Insert(namespaceTag, pr.Namespace),
tag.Insert(pipelineTag, pipelineName),
tag.Insert(pipelinerunTag, pr.Name),
}
if r.cfg != nil {
switch r.cfg.RunningPipelinerunLevel {
case runningPRLevelPipelinerun:
pipelineRunKey = pipelineRunKey + "#" + pr.Name
fallthrough
case runningPRLevelPipeline:
pipelineRunKey = pipelineRunKey + "#" + pipelineName
fallthrough
case runningPRLevelNamespace:
pipelineRunKey = pipelineRunKey + "#" + pr.Namespace
case runningPRLevelCluster:
default:
return fmt.Errorf("RunningPipelineRunLevel value \"%s\" is not valid ", r.cfg.RunningPipelinerunLevel)
}
}
ctx_, err_ := tag.New(context.Background(), mutators...)
if err_ != nil {
return err
}
if !pr.IsDone() {
countMap[pipelineRunKey]++
metrics.Record(ctx_, runningPRs.M(float64(countMap[pipelineRunKey])))
runningPipelineRuns++
succeedCondition := pr.Status.GetCondition(apis.ConditionSucceeded)
if succeedCondition != nil && succeedCondition.Status == corev1.ConditionUnknown {
Expand All @@ -409,6 +457,13 @@ func (r *Recorder) RunningPipelineRuns(lister listers.PipelineRunLister) error {
prsWaitResolvingPipelineRef++
}
}
} else {
// In case there are no running PipelineRuns for the pipelineRunKey, set the metric value to 0 to ensure
// the metric is set for the key.
if _, exists := countMap[pipelineRunKey]; !exists {
countMap[pipelineRunKey] = 0
metrics.Record(ctx_, runningPRs.M(0))
}
}
}

Expand All @@ -421,7 +476,6 @@ func (r *Recorder) RunningPipelineRuns(lister listers.PipelineRunLister) error {
metrics.Record(ctx, runningPRsWaitingOnTaskResolutionCount.M(float64(trsWaitResolvingTaskRef)))
metrics.Record(ctx, runningPRsWaitingOnTaskResolution.M(float64(trsWaitResolvingTaskRef)))
metrics.Record(ctx, runningPRsCount.M(float64(runningPipelineRuns)))
metrics.Record(ctx, runningPRs.M(float64(runningPipelineRuns)))

return nil
}
Expand Down
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