forked from grafana/loki
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request grafana#121 from grafana/main
Update from upstream repository
- Loading branch information
Showing
87 changed files
with
30,409 additions
and
493 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| package stages | ||
|
|
||
| import ( | ||
| "math" | ||
| "math/rand" | ||
| "time" | ||
|
|
||
| "github.com/go-kit/log" | ||
| "github.com/mitchellh/mapstructure" | ||
| "github.com/pkg/errors" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/uber/jaeger-client-go/utils" | ||
| ) | ||
|
|
||
| const ( | ||
| ErrSamplingStageInvalidRate = "sampling stage failed to parse rate,Sampling Rate must be between 0.0 and 1.0, received %f" | ||
| ) | ||
| const maxRandomNumber = ^(uint64(1) << 63) // i.e. 0x7fffffffffffffff | ||
|
|
||
| var ( | ||
| defaultSamplingpReason = "sampling_stage" | ||
| ) | ||
|
|
||
| // SamplingConfig contains the configuration for a samplingStage | ||
| type SamplingConfig struct { | ||
| DropReason *string `mapstructure:"drop_counter_reason"` | ||
| // | ||
| SamplingRate float64 `mapstructure:"rate"` | ||
| } | ||
|
|
||
| // validateSamplingConfig validates the SamplingConfig for the sampleStage | ||
| func validateSamplingConfig(cfg *SamplingConfig) error { | ||
| if cfg.DropReason == nil || *cfg.DropReason == "" { | ||
| cfg.DropReason = &defaultSamplingpReason | ||
| } | ||
| if cfg.SamplingRate < 0.0 || cfg.SamplingRate > 1.0 { | ||
| return errors.Errorf(ErrSamplingStageInvalidRate, cfg.SamplingRate) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| // newSamplingStage creates a SamplingStage from config | ||
| // code from jaeger project. | ||
| // github.com/uber/jaeger-client-go@v2.30.0+incompatible/tracer.go:126 | ||
| func newSamplingStage(logger log.Logger, config interface{}, registerer prometheus.Registerer) (Stage, error) { | ||
| cfg := &SamplingConfig{} | ||
| err := mapstructure.WeakDecode(config, cfg) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| err = validateSamplingConfig(cfg) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| samplingRate := math.Max(0.0, math.Min(cfg.SamplingRate, 1.0)) | ||
| samplingBoundary := uint64(float64(maxRandomNumber) * samplingRate) | ||
| seedGenerator := utils.NewRand(time.Now().UnixNano()) | ||
| source := rand.NewSource(seedGenerator.Int63()) | ||
| return &samplingStage{ | ||
| logger: log.With(logger, "component", "stage", "type", "sampling"), | ||
| cfg: cfg, | ||
| dropCount: getDropCountMetric(registerer), | ||
| samplingBoundary: samplingBoundary, | ||
| source: source, | ||
| }, nil | ||
| } | ||
|
|
||
| type samplingStage struct { | ||
| logger log.Logger | ||
| cfg *SamplingConfig | ||
| dropCount *prometheus.CounterVec | ||
| samplingBoundary uint64 | ||
| source rand.Source | ||
| } | ||
|
|
||
| func (m *samplingStage) Run(in chan Entry) chan Entry { | ||
| out := make(chan Entry) | ||
| go func() { | ||
| defer close(out) | ||
| for e := range in { | ||
| if m.isSampled() { | ||
| out <- e | ||
| continue | ||
| } | ||
| m.dropCount.WithLabelValues(*m.cfg.DropReason).Inc() | ||
| } | ||
| }() | ||
| return out | ||
| } | ||
|
|
||
| // code from jaeger project. | ||
| // github.com/uber/jaeger-client-go@v2.30.0+incompatible/sampler.go:144 | ||
| // func (s *ProbabilisticSampler) IsSampled(id TraceID, operation string) (bool, []Tag) | ||
| func (m *samplingStage) isSampled() bool { | ||
| return m.samplingBoundary >= m.randomID()&maxRandomNumber | ||
| } | ||
| func (m *samplingStage) randomID() uint64 { | ||
| val := m.randomNumber() | ||
| for val == 0 { | ||
| val = m.randomNumber() | ||
| } | ||
| return val | ||
| } | ||
| func (m *samplingStage) randomNumber() uint64 { | ||
| return uint64(m.source.Int63()) | ||
| } | ||
|
|
||
| // Name implements Stage | ||
| func (m *samplingStage) Name() string { | ||
| return StageTypeSampling | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| package stages | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/require" | ||
|
|
||
| util_log "github.com/grafana/loki/pkg/util/log" | ||
| ) | ||
|
|
||
| var testSampingYaml = ` | ||
| pipeline_stages: | ||
| - sampling: | ||
| rate: 0.5 | ||
| ` | ||
|
|
||
| func TestSamplingPipeline(t *testing.T) { | ||
| registry := prometheus.NewRegistry() | ||
| pl, err := NewPipeline(util_log.Logger, loadConfig(testSampingYaml), &plName, registry) | ||
| require.NoError(t, err) | ||
|
|
||
| entries := make([]Entry, 0) | ||
| for i := 0; i < 100; i++ { | ||
| entries = append(entries, newEntry(nil, nil, testMatchLogLineApp1, time.Now())) | ||
| } | ||
|
|
||
| out := processEntries(pl, entries..., | ||
| ) | ||
| // sampling rate = 0.5,entries len = 100, | ||
| // The theoretical sample size is 50. | ||
| // 50>30 and 50<70 | ||
| assert.GreaterOrEqual(t, len(out), 30) | ||
| assert.LessOrEqual(t, len(out), 70) | ||
|
|
||
| } | ||
|
|
||
| func Test_validateSamplingConfig(t *testing.T) { | ||
| tests := []struct { | ||
| name string | ||
| config *SamplingConfig | ||
| wantErr error | ||
| }{ | ||
| { | ||
| name: "Invalid rate", | ||
| config: &SamplingConfig{ | ||
| SamplingRate: 12, | ||
| }, | ||
| wantErr: fmt.Errorf(ErrSamplingStageInvalidRate, 12.0), | ||
| }, | ||
| } | ||
| for _, tt := range tests { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| if err := validateSamplingConfig(tt.config); ((err != nil) && (err.Error() != tt.wantErr.Error())) || (err == nil && tt.wantErr != nil) { | ||
| t.Errorf("validateDropConfig() error = %v, wantErr = %v", err, tt.wantErr) | ||
| } | ||
| }) | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
20 changes: 15 additions & 5 deletions
20
docs/sources/rules/_index.md → docs/sources/alert/_index.md
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.