mirror of https://github.com/grafana/grafana
Alerting: Introduce the silencing interface (#32517)
* Alerting: Introduce the silencing interface The operations introduced are: - Listing silences - Retrieving an specific silence - Deleting a silence - Creating a silence Signed-off-by: Josue Abreu <josue@grafana.com> * Add a comment to listing silences * Update to upstream alertmanager * Remove copied code from the Alertmanagerpull/32174/head
gotjosh
4 years ago
committed by
GitHub
parent
230f95dc47
commit
433f6b91d0
@ -1 +1,122 @@ |
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package notifier |
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import ( |
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"fmt" |
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"time" |
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apimodels "github.com/grafana/alerting-api/pkg/api" |
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"github.com/pkg/errors" |
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v2 "github.com/prometheus/alertmanager/api/v2" |
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"github.com/prometheus/alertmanager/pkg/labels" |
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"github.com/prometheus/alertmanager/silence" |
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) |
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var ( |
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ErrGetSilencesInternal = errors.New("unable to retrieve silence(s) due to an internal error") |
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ErrDeleteSilenceInternal = errors.New("unable to delete silence due to an internal error") |
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ErrCreateSilenceBadPayload = errors.New("unable to create silence") |
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ErrListSilencesBadPayload = errors.New("unable to list silences") |
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ErrSilenceNotFound = silence.ErrNotFound |
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) |
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// ListSilences retrieves a list of stored silences. It supports a set of labels as filters.
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func (am *Alertmanager) ListSilences(filters []string) (apimodels.GettableSilences, error) { |
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matchers := []*labels.Matcher{} |
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for _, matcherString := range filters { |
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matcher, err := labels.ParseMatcher(matcherString) |
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if err != nil { |
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am.logger.Error("failed to parse matcher", "err", err, "matcher", matcherString) |
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return nil, errors.Wrap(ErrListSilencesBadPayload, err.Error()) |
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} |
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matchers = append(matchers, matcher) |
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} |
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psils, _, err := am.silences.Query() |
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if err != nil { |
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am.logger.Error(ErrGetSilencesInternal.Error(), "err", err) |
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return nil, errors.Wrap(ErrGetSilencesInternal, err.Error()) |
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} |
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sils := apimodels.GettableSilences{} |
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for _, ps := range psils { |
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if !v2.CheckSilenceMatchesFilterLabels(ps, matchers) { |
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continue |
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} |
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silence, err := v2.GettableSilenceFromProto(ps) |
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if err != nil { |
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am.logger.Error("unmarshaling from protobuf failed", "err", err) |
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return apimodels.GettableSilences{}, errors.Wrap(ErrGetSilencesInternal, fmt.Sprintf("failed to convert internal silence to API silence: %v", err.Error())) |
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} |
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sils = append(sils, &silence) |
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} |
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v2.SortSilences(sils) |
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return sils, nil |
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} |
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// GetSilence retrieves a silence by the provided silenceID. It returns ErrSilenceNotFound if the silence is not present.
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func (am *Alertmanager) GetSilence(silenceID string) (apimodels.GettableSilence, error) { |
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sils, _, err := am.silences.Query(silence.QIDs(silenceID)) |
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if err != nil { |
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return apimodels.GettableSilence{}, errors.Wrap(ErrGetSilencesInternal, err.Error()) |
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} |
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if len(sils) == 0 { |
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am.logger.Error("failed to find silence", "err", err, "id", sils) |
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return apimodels.GettableSilence{}, ErrSilenceNotFound |
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} |
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sil, err := v2.GettableSilenceFromProto(sils[0]) |
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if err != nil { |
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am.logger.Error("unmarshaling from protobuf failed", "err", err) |
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return apimodels.GettableSilence{}, errors.Wrap(ErrGetSilencesInternal, fmt.Sprintf("failed to convert internal silence to API silence: %v", err.Error())) |
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} |
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return sil, nil |
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} |
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// CreateSilence persists the provided silence and returns the silence ID if successful.
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func (am *Alertmanager) CreateSilence(ps *apimodels.PostableSilence) (string, error) { |
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sil, err := v2.PostableSilenceToProto(ps) |
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if err != nil { |
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am.logger.Error("marshaling to protobuf failed", "err", err) |
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return "", errors.Wrap(ErrCreateSilenceBadPayload, fmt.Sprintf("failed to convert API silence to internal silence: %v", err.Error())) |
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} |
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if sil.StartsAt.After(sil.EndsAt) || sil.StartsAt.Equal(sil.EndsAt) { |
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msg := "start time must be before end time" |
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am.logger.Error(msg, "err", "starts_at", sil.StartsAt, "ends_at", sil.EndsAt) |
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return "", errors.Wrap(ErrCreateSilenceBadPayload, msg) |
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} |
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if sil.EndsAt.Before(time.Now()) { |
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msg := "end time can't be in the past" |
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am.logger.Error(msg, "ends_at", sil.EndsAt) |
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return "", errors.Wrap(ErrCreateSilenceBadPayload, msg) |
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} |
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silenceID, err := am.silences.Set(sil) |
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if err != nil { |
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am.logger.Error("msg", "unable to save silence", "err", err) |
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if errors.Is(err, silence.ErrNotFound) { |
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return "", ErrSilenceNotFound |
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} |
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return "", errors.Wrap(ErrCreateSilenceBadPayload, fmt.Sprintf("unable to save silence: %v", err.Error())) |
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} |
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return silenceID, nil |
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} |
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// DeleteSilence looks for and expires the silence by the provided silenceID. It returns ErrSilenceNotFound if the silence is not present.
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func (am *Alertmanager) DeleteSilence(silenceID string) error { |
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if err := am.silences.Expire(silenceID); err != nil { |
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if errors.Is(err, silence.ErrNotFound) { |
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return ErrSilenceNotFound |
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} |
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return errors.Wrap(ErrDeleteSilenceInternal, err.Error()) |
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} |
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return nil |
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} |
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