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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| // Copyright 2024 Prometheus Team | ||
| // 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 enrichment | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "net/http" | ||
|
|
||
| "github.com/go-kit/log" | ||
| "github.com/go-kit/log/level" | ||
|
|
||
| commoncfg "github.com/prometheus/common/config" | ||
|
|
||
| "github.com/prometheus/alertmanager/config" | ||
| "github.com/prometheus/alertmanager/notify" | ||
| "github.com/prometheus/alertmanager/template" | ||
| "github.com/prometheus/alertmanager/types" | ||
| ) | ||
|
|
||
| type Enrichments struct { | ||
| enrichments []*Enrichment | ||
| } | ||
|
|
||
| func NewEnrichments(enrs []config.Enrichment) (*Enrichments, error) { | ||
| enrichments := make([]*Enrichment, 0, len(enrs)) | ||
|
|
||
| for _, enr := range enrs { | ||
| enrichment, err := NewEnrichment(enr) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| enrichments = append(enrichments, enrichment) | ||
| } | ||
|
|
||
| return &Enrichments{ | ||
| enrichments: enrichments, | ||
| }, nil | ||
| } | ||
|
|
||
| func (e *Enrichments) Apply(ctx context.Context, l log.Logger, alerts ...*types.Alert) { | ||
| var ( | ||
| success = 0 | ||
| failed = 0 | ||
| ) | ||
|
|
||
| // TODO: These could/should be done async. Need to decide if to allow dependent enrichments. | ||
| for i, enr := range e.enrichments { | ||
| if err := enr.Apply(ctx, l, alerts...); err != nil { | ||
| // Attempt to apply all enrichments, one doesn't need to affect the others. | ||
| level.Error(l).Log("msg", "Enrichment failed", "i", i, "err", err) | ||
| failed++ | ||
| } else { | ||
| success++ | ||
| } | ||
| } | ||
|
|
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| level.Debug(l).Log("msg", "Enrichments applied", "success", success, "failed", failed) | ||
| } | ||
|
|
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| type Enrichment struct { | ||
| conf config.Enrichment | ||
| client *http.Client | ||
| } | ||
|
|
||
| func NewEnrichment(conf config.Enrichment) (*Enrichment, error) { | ||
| client, err := commoncfg.NewClientFromConfig(*conf.HTTPConfig, "enrichment") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &Enrichment{ | ||
| conf: conf, | ||
| client: client, | ||
| }, nil | ||
| } | ||
|
|
||
| func (e *Enrichment) Apply(ctx context.Context, l log.Logger, alerts ...*types.Alert) error { | ||
| // TODO: Template isn't needed by this function but we need to pass something. | ||
| data := notify.GetTemplateData(ctx, &template.Template{}, alerts, l) | ||
|
|
||
| var buf bytes.Buffer | ||
| if err := json.NewEncoder(&buf).Encode(data); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| url := e.conf.URL.String() | ||
|
|
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| if e.conf.Timeout > 0 { | ||
| postCtx, cancel := context.WithTimeoutCause(ctx, e.conf.Timeout, fmt.Errorf("configured enrichment timeout reached (%s)", e.conf.Timeout)) | ||
| defer cancel() | ||
| ctx = postCtx | ||
| } | ||
|
|
||
| resp, err := notify.PostJSON(ctx, e.client, url, &buf) | ||
| if err != nil { | ||
| if ctx.Err() != nil { | ||
| err = fmt.Errorf("%w: %w", err, context.Cause(ctx)) | ||
| } | ||
| return notify.RedactURL(err) | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
||
| var result template.Data | ||
| err = json.NewDecoder(resp.Body).Decode(&result) | ||
|
|
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| // TODO: Do something with the result. | ||
| // TODO: Don't log the URL unredacted. | ||
| level.Info(l).Log("msg", "Enrichment result", | ||
| "url", url, | ||
| "groupLabels", result.GroupLabels, | ||
| "commonLabels", result.CommonLabels, | ||
| "commonAnnotations", result.CommonLabels) | ||
|
|
||
| return nil | ||
| } | ||
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