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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| // Copyright 2020 Google LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package certapi | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "github.com/google/exposure-notifications-verification-server/pkg/observability" | ||
|
|
||
| "go.opencensus.io/stats" | ||
| "go.opencensus.io/stats/view" | ||
| "go.opencensus.io/tag" | ||
| ) | ||
|
|
||
| var ( | ||
| MetricPrefix = observability.MetricRoot + "/api/certificate" | ||
| ) | ||
|
|
||
| type Metrics struct { | ||
| Attempts *stats.Int64Measure | ||
| TokenExpired *stats.Int64Measure | ||
| TokenUsed *stats.Int64Measure | ||
| TokenInvalid *stats.Int64Measure | ||
| CertificateIssued *stats.Int64Measure | ||
| CertificateErrors *stats.Int64Measure | ||
| } | ||
|
|
||
| func registerMetrics() (*Metrics, error) { | ||
| mAttempts := stats.Int64(MetricPrefix+"/attempts", "certificate issue attempts", stats.UnitDimensionless) | ||
| if err := view.Register(&view.View{ | ||
| Name: MetricPrefix + "/attempt_count", | ||
| Measure: mAttempts, | ||
| Description: "The count of certificate issue attempts", | ||
| TagKeys: []tag.Key{observability.RealmTagKey}, | ||
| Aggregation: view.Count(), | ||
| }); err != nil { | ||
| return nil, fmt.Errorf("stat view registration failure: %w", err) | ||
| } | ||
| mTokenExpired := stats.Int64(MetricPrefix+"/token_expired", "expired tokens on certificate issue", stats.UnitDimensionless) | ||
| if err := view.Register(&view.View{ | ||
| Name: MetricPrefix + "/token_expired_count", | ||
| Measure: mTokenExpired, | ||
| Description: "The count of expired tokens on certificate issue", | ||
| TagKeys: []tag.Key{observability.RealmTagKey}, | ||
| Aggregation: view.Count(), | ||
| }); err != nil { | ||
| return nil, fmt.Errorf("stat view registration failure: %w", err) | ||
| } | ||
| mTokenUsed := stats.Int64(MetricPrefix+"/token_used", "already used tokens on certificate issue", stats.UnitDimensionless) | ||
| if err := view.Register(&view.View{ | ||
| Name: MetricPrefix + "/token_used_count", | ||
| Measure: mTokenUsed, | ||
| Description: "The count of already used tokens on certificate issue", | ||
| TagKeys: []tag.Key{observability.RealmTagKey}, | ||
| Aggregation: view.Count(), | ||
| }); err != nil { | ||
| return nil, fmt.Errorf("stat view registration failure: %w", err) | ||
| } | ||
| mTokenInvalid := stats.Int64(MetricPrefix+"/invalid_token", "invalid tokens on certificate issue", stats.UnitDimensionless) | ||
| if err := view.Register(&view.View{ | ||
| Name: MetricPrefix + "/invalid_token_count", | ||
| Measure: mTokenInvalid, | ||
| Description: "The count of invalid tokens on certificate issue", | ||
| TagKeys: []tag.Key{observability.RealmTagKey}, | ||
| Aggregation: view.Count(), | ||
| }); err != nil { | ||
| return nil, fmt.Errorf("stat view registration failure: %w", err) | ||
| } | ||
| mCertificateIssued := stats.Int64(MetricPrefix+"/issue", "certificates issued", stats.UnitDimensionless) | ||
| if err := view.Register(&view.View{ | ||
| Name: MetricPrefix + "/issue_count", | ||
| Measure: mCertificateIssued, | ||
| Description: "The count of certificates issued", | ||
| TagKeys: []tag.Key{observability.RealmTagKey}, | ||
| Aggregation: view.Count(), | ||
| }); err != nil { | ||
| return nil, fmt.Errorf("stat view registration failure: %w", err) | ||
| } | ||
| mCertificateErrors := stats.Int64(MetricPrefix+"/errors", "certificate issue errors", stats.UnitDimensionless) | ||
| if err := view.Register(&view.View{ | ||
| Name: MetricPrefix + "/error_count", | ||
| Measure: mCertificateErrors, | ||
| Description: "The count of certificate issue errors", | ||
| TagKeys: []tag.Key{observability.RealmTagKey}, | ||
| Aggregation: view.Count(), | ||
| }); err != nil { | ||
| return nil, fmt.Errorf("stat view registration failure: %w", err) | ||
| } | ||
|
|
||
| return &Metrics{ | ||
| Attempts: mAttempts, | ||
| TokenExpired: mTokenExpired, | ||
| TokenUsed: mTokenUsed, | ||
| TokenInvalid: mTokenInvalid, | ||
| CertificateIssued: mCertificateIssued, | ||
| CertificateErrors: mCertificateErrors, | ||
| }, nil | ||
| } |
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