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notification_policies.go
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notification_policies.go
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package provisioning
import (
"context"
"fmt"
"github.com/grafana/grafana/pkg/infra/log"
"github.com/grafana/grafana/pkg/services/ngalert/api/tooling/definitions"
"github.com/grafana/grafana/pkg/services/ngalert/models"
"github.com/grafana/grafana/pkg/setting"
)
type NotificationPolicyService struct {
amStore AMConfigStore
provenanceStore ProvisioningStore
xact TransactionManager
log log.Logger
settings setting.UnifiedAlertingSettings
}
func NewNotificationPolicyService(am AMConfigStore, prov ProvisioningStore,
xact TransactionManager, settings setting.UnifiedAlertingSettings, log log.Logger) *NotificationPolicyService {
return &NotificationPolicyService{
amStore: am,
provenanceStore: prov,
xact: xact,
log: log,
settings: settings,
}
}
func (nps *NotificationPolicyService) GetAMConfigStore() AMConfigStore {
return nps.amStore
}
func (nps *NotificationPolicyService) GetPolicyTree(ctx context.Context, orgID int64) (definitions.Route, error) {
q := models.GetLatestAlertmanagerConfigurationQuery{
OrgID: orgID,
}
alertManagerConfig, err := nps.amStore.GetLatestAlertmanagerConfiguration(ctx, &q)
if err != nil {
return definitions.Route{}, err
}
cfg, err := deserializeAlertmanagerConfig([]byte(alertManagerConfig.AlertmanagerConfiguration))
if err != nil {
return definitions.Route{}, err
}
if cfg.AlertmanagerConfig.Config.Route == nil {
return definitions.Route{}, fmt.Errorf("no route present in current alertmanager config")
}
provenance, err := nps.provenanceStore.GetProvenance(ctx, cfg.AlertmanagerConfig.Route, orgID)
if err != nil {
return definitions.Route{}, err
}
result := *cfg.AlertmanagerConfig.Route
result.Provenance = definitions.Provenance(provenance)
return result, nil
}
func (nps *NotificationPolicyService) UpdatePolicyTree(ctx context.Context, orgID int64, tree definitions.Route, p models.Provenance) error {
err := tree.Validate()
if err != nil {
return fmt.Errorf("%w: %s", ErrValidation, err.Error())
}
revision, err := getLastConfiguration(ctx, orgID, nps.amStore)
if err != nil {
return err
}
receivers, err := nps.receiversToMap(revision.cfg.AlertmanagerConfig.Receivers)
if err != nil {
return err
}
err = tree.ValidateReceivers(receivers)
if err != nil {
return fmt.Errorf("%w: %s", ErrValidation, err.Error())
}
muteTimes := map[string]struct{}{}
for _, mt := range revision.cfg.AlertmanagerConfig.MuteTimeIntervals {
muteTimes[mt.Name] = struct{}{}
}
err = tree.ValidateMuteTimes(muteTimes)
if err != nil {
return fmt.Errorf("%w: %s", ErrValidation, err.Error())
}
revision.cfg.AlertmanagerConfig.Config.Route = &tree
serialized, err := serializeAlertmanagerConfig(*revision.cfg)
if err != nil {
return err
}
cmd := models.SaveAlertmanagerConfigurationCmd{
AlertmanagerConfiguration: string(serialized),
ConfigurationVersion: revision.version,
FetchedConfigurationHash: revision.concurrencyToken,
Default: false,
OrgID: orgID,
}
err = nps.xact.InTransaction(ctx, func(ctx context.Context) error {
err = PersistConfig(ctx, nps.amStore, &cmd)
if err != nil {
return err
}
err = nps.provenanceStore.SetProvenance(ctx, &tree, orgID, p)
if err != nil {
return err
}
return nil
})
if err != nil {
return err
}
return nil
}
func (nps *NotificationPolicyService) ResetPolicyTree(ctx context.Context, orgID int64) (definitions.Route, error) {
defaultCfg, err := deserializeAlertmanagerConfig([]byte(nps.settings.DefaultConfiguration))
if err != nil {
nps.log.Error("failed to parse default alertmanager config: %w", err)
return definitions.Route{}, fmt.Errorf("failed to parse default alertmanager config: %w", err)
}
route := defaultCfg.AlertmanagerConfig.Route
revision, err := getLastConfiguration(ctx, orgID, nps.amStore)
if err != nil {
return definitions.Route{}, err
}
revision.cfg.AlertmanagerConfig.Config.Route = route
err = nps.ensureDefaultReceiverExists(revision.cfg, defaultCfg)
if err != nil {
return definitions.Route{}, err
}
serialized, err := serializeAlertmanagerConfig(*revision.cfg)
if err != nil {
return definitions.Route{}, err
}
cmd := models.SaveAlertmanagerConfigurationCmd{
AlertmanagerConfiguration: string(serialized),
ConfigurationVersion: revision.version,
FetchedConfigurationHash: revision.concurrencyToken,
Default: false,
OrgID: orgID,
}
err = nps.xact.InTransaction(ctx, func(ctx context.Context) error {
err := PersistConfig(ctx, nps.amStore, &cmd)
if err != nil {
return err
}
err = nps.provenanceStore.DeleteProvenance(ctx, route, orgID)
if err != nil {
return err
}
return nil
})
if err != nil {
return definitions.Route{}, nil
}
return *route, nil
}
func (nps *NotificationPolicyService) receiversToMap(records []*definitions.PostableApiReceiver) (map[string]struct{}, error) {
receivers := map[string]struct{}{}
for _, receiver := range records {
receivers[receiver.Name] = struct{}{}
}
return receivers, nil
}
func (nps *NotificationPolicyService) ensureDefaultReceiverExists(cfg *definitions.PostableUserConfig, defaultCfg *definitions.PostableUserConfig) error {
defaultRcv := cfg.AlertmanagerConfig.Route.Receiver
for _, rcv := range cfg.AlertmanagerConfig.Receivers {
if rcv.Name == defaultRcv {
return nil
}
}
for _, rcv := range defaultCfg.AlertmanagerConfig.Receivers {
if rcv.Name == defaultRcv {
cfg.AlertmanagerConfig.Receivers = append(cfg.AlertmanagerConfig.Receivers, rcv)
return nil
}
}
nps.log.Error("Grafana Alerting has been configured with a default configuration that is internally inconsistent! The default configuration's notification policy must have a corresponding receiver.")
return fmt.Errorf("inconsistent default configuration")
}