[Alerting]: implement backend checking for forking to Lotex ruler (#32208)

* Rename DatasourceId path parameter

* Implement fork ruler backendType()

* Apply suggestions from code review

go.mod

@@ -40,7 +40,7 @@ require (
 	github.com/google/go-cmp v0.5.5
 	github.com/google/uuid v1.2.0
 	github.com/gosimple/slug v1.9.0
-	github.com/grafana/alerting-api v0.0.0-20210318231719-9499804fc548
+	github.com/grafana/alerting-api v0.0.0-20210323142651-d6515052e2f0
 	github.com/grafana/grafana-aws-sdk v0.2.0
 	github.com/grafana/grafana-plugin-model v0.0.0-20190930120109-1fc953a61fb4
 	github.com/grafana/grafana-plugin-sdk-go v0.88.0

go.sum

@@ -796,6 +796,10 @@ github.com/gosimple/slug v1.9.0 h1:r5vDcYrFz9BmfIAMC829un9hq7hKM4cHUrsv36LbEqs=
 github.com/gosimple/slug v1.9.0/go.mod h1:AMZ+sOVe65uByN3kgEyf9WEBKBCSS+dJjMX9x4vDJbg=
 github.com/grafana/alerting-api v0.0.0-20210318231719-9499804fc548 h1:KjyaZJhPJ15Ul/+OQr8mbO7kDpU5i7G3r5FGVZKClTQ=
 github.com/grafana/alerting-api v0.0.0-20210318231719-9499804fc548/go.mod h1:5IppnPguSHcCbVLGCVzVjBvuQZNbYgVJ4KyXXjhCyWY=
+github.com/grafana/alerting-api v0.0.0-20210323141138-8873de5bf07a h1:OGKDRdmQSXKFJelrJUf9O8Xh0C8u+OQG1NSurcBYpOI=
+github.com/grafana/alerting-api v0.0.0-20210323141138-8873de5bf07a/go.mod h1:5IppnPguSHcCbVLGCVzVjBvuQZNbYgVJ4KyXXjhCyWY=
+github.com/grafana/alerting-api v0.0.0-20210323142651-d6515052e2f0 h1:bMYGd71RigZvkLmcdedGdMDJXKJ20luqEQLbqjgAAjI=
+github.com/grafana/alerting-api v0.0.0-20210323142651-d6515052e2f0/go.mod h1:5IppnPguSHcCbVLGCVzVjBvuQZNbYgVJ4KyXXjhCyWY=
 github.com/grafana/grafana v1.9.2-0.20210308201921-4ce0a49eac03/go.mod h1:AHRRvd4utJGY25J5nW8aL7wZzn/LcJ0z2za9oOp14j4=
 github.com/grafana/grafana-aws-sdk v0.1.0/go.mod h1:+pPo5U+pX0zWimR7YBc7ASeSQfbRkcTyQYqMiAj7G5U=
 github.com/grafana/grafana-aws-sdk v0.2.0 h1:UTBBYwye+ad5YUIlwN7TGxLdz1wXN3Ezhl0pseDGRVA=
@@ -1411,6 +1415,7 @@ github.com/prometheus/prometheus v1.8.2-0.20210217141258-a6be548dbc17 h1:VN3p3Nb
 github.com/prometheus/prometheus v1.8.2-0.20210217141258-a6be548dbc17/go.mod h1:dv3B1syqmkrkmo665MPCU6L8PbTXIiUeg/OEQULLNxA=
 github.com/prometheus/statsd_exporter v0.15.0/go.mod h1:Dv8HnkoLQkeEjkIE4/2ndAA7WL1zHKK7WMqFQqu72rw=
 github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40TwIPHuXU=
+github.com/quasilyte/go-ruleguard/dsl/fluent v0.0.0-20201222093424-5d7e62a465d3 h1:eL7x4/zMnlquMxYe7V078BD7MGskZ0daGln+SJCVzuY=
 github.com/quasilyte/go-ruleguard/dsl/fluent v0.0.0-20201222093424-5d7e62a465d3/go.mod h1:P7JlQWFT7jDcFZMtUPQbtGzzzxva3rBn6oIF+LPwFcM=
 github.com/rafaeljusto/redigomock v0.0.0-20190202135759-257e089e14a1/go.mod h1:JaY6n2sDr+z2WTsXkOmNRUfDy6FN0L6Nk7x06ndm4tY=
 github.com/rainycape/unidecode v0.0.0-20150907023854-cb7f23ec59be h1:ta7tUOvsPHVHGom5hKW5VXNc2xZIkfCKP8iaqOyYtUQ=

pkg/services/ngalert/api/api.go

@@ -46,6 +46,7 @@ func (api *API) RegisterAPIEndpoints() {
 	api.RegisterAlertmanagerApiEndpoints(AlertmanagerApiMock{log: logger})
 	api.RegisterPrometheusApiEndpoints(PrometheusApiMock{log: logger})
 	api.RegisterRulerApiEndpoints(NewForkedRuler(
+		api.DatasourceCache,
 		&LotexRuler{DataProxy: api.DataProxy, log: logger},
 		RulerApiMock{log: logger},
 	))

pkg/services/ngalert/api/api_alertmanager_base.go

@@ -36,82 +36,82 @@ type AlertmanagerApiBase struct {
 
 func (api *API) RegisterAlertmanagerApiEndpoints(srv AlertmanagerApiService) {
 	api.RouteRegister.Group("", func(group routing.RouteRegister) {
-		group.Post(toMacaronPath("/alertmanager/{DatasourceId}/api/v2/silences"), binding.Bind(apimodels.SilenceBody{}), routing.Wrap(srv.RouteCreateSilence))
+		group.Post(toMacaronPath("/alertmanager/{Recipient}/api/v2/silences"), binding.Bind(apimodels.SilenceBody{}), routing.Wrap(srv.RouteCreateSilence))
-		group.Delete(toMacaronPath("/alertmanager/{DatasourceId}/config/api/v1/alerts"), routing.Wrap(srv.RouteDeleteAlertingConfig))
+		group.Delete(toMacaronPath("/alertmanager/{Recipient}/config/api/v1/alerts"), routing.Wrap(srv.RouteDeleteAlertingConfig))
-		group.Delete(toMacaronPath("/alertmanager/{DatasourceId}/api/v2/silence/{SilenceId}"), routing.Wrap(srv.RouteDeleteSilence))
+		group.Delete(toMacaronPath("/alertmanager/{Recipient}/api/v2/silence/{SilenceId}"), routing.Wrap(srv.RouteDeleteSilence))
-		group.Get(toMacaronPath("/alertmanager/{DatasourceId}/config/api/v1/alerts"), routing.Wrap(srv.RouteGetAlertingConfig))
+		group.Get(toMacaronPath("/alertmanager/{Recipient}/config/api/v1/alerts"), routing.Wrap(srv.RouteGetAlertingConfig))
-		group.Get(toMacaronPath("/alertmanager/{DatasourceId}/api/v2/alerts/groups"), routing.Wrap(srv.RouteGetAmAlertGroups))
+		group.Get(toMacaronPath("/alertmanager/{Recipient}/api/v2/alerts/groups"), routing.Wrap(srv.RouteGetAmAlertGroups))
-		group.Get(toMacaronPath("/alertmanager/{DatasourceId}/api/v2/alerts"), routing.Wrap(srv.RouteGetAmAlerts))
+		group.Get(toMacaronPath("/alertmanager/{Recipient}/api/v2/alerts"), routing.Wrap(srv.RouteGetAmAlerts))
-		group.Get(toMacaronPath("/alertmanager/{DatasourceId}/api/v2/silence/{SilenceId}"), routing.Wrap(srv.RouteGetSilence))
+		group.Get(toMacaronPath("/alertmanager/{Recipient}/api/v2/silence/{SilenceId}"), routing.Wrap(srv.RouteGetSilence))
-		group.Get(toMacaronPath("/alertmanager/{DatasourceId}/api/v2/silences"), routing.Wrap(srv.RouteGetSilences))
+		group.Get(toMacaronPath("/alertmanager/{Recipient}/api/v2/silences"), routing.Wrap(srv.RouteGetSilences))
-		group.Post(toMacaronPath("/alertmanager/{DatasourceId}/config/api/v1/alerts"), binding.Bind(apimodels.PostableUserConfig{}), routing.Wrap(srv.RoutePostAlertingConfig))
+		group.Post(toMacaronPath("/alertmanager/{Recipient}/config/api/v1/alerts"), binding.Bind(apimodels.PostableUserConfig{}), routing.Wrap(srv.RoutePostAlertingConfig))
-		group.Post(toMacaronPath("/alertmanager/{DatasourceId}/api/v2/alerts"), binding.Bind(apimodels.PostableAlerts{}), routing.Wrap(srv.RoutePostAmAlerts))
+		group.Post(toMacaronPath("/alertmanager/{Recipient}/api/v2/alerts"), binding.Bind(apimodels.PostableAlerts{}), routing.Wrap(srv.RoutePostAmAlerts))
 	})
 }
 
 func (base AlertmanagerApiBase) RouteCreateSilence(c *models.ReqContext, body apimodels.SilenceBody) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteCreateSilence: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteCreateSilence: ", "Recipient", recipient)
 	base.log.Info("RouteCreateSilence: ", "body", body)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base AlertmanagerApiBase) RouteDeleteAlertingConfig(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteDeleteAlertingConfig: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteDeleteAlertingConfig: ", "Recipient", recipient)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base AlertmanagerApiBase) RouteDeleteSilence(c *models.ReqContext) response.Response {
 	silenceId := c.Params(":SilenceId")
 	base.log.Info("RouteDeleteSilence: ", "SilenceId", silenceId)
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteDeleteSilence: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteDeleteSilence: ", "Recipient", recipient)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base AlertmanagerApiBase) RouteGetAlertingConfig(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteGetAlertingConfig: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteGetAlertingConfig: ", "Recipient", recipient)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base AlertmanagerApiBase) RouteGetAmAlertGroups(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteGetAmAlertGroups: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteGetAmAlertGroups: ", "Recipient", recipient)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base AlertmanagerApiBase) RouteGetAmAlerts(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteGetAmAlerts: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteGetAmAlerts: ", "Recipient", recipient)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base AlertmanagerApiBase) RouteGetSilence(c *models.ReqContext) response.Response {
 	silenceId := c.Params(":SilenceId")
 	base.log.Info("RouteGetSilence: ", "SilenceId", silenceId)
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteGetSilence: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteGetSilence: ", "Recipient", recipient)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base AlertmanagerApiBase) RouteGetSilences(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteGetSilences: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteGetSilences: ", "Recipient", recipient)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base AlertmanagerApiBase) RoutePostAlertingConfig(c *models.ReqContext, body apimodels.PostableUserConfig) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RoutePostAlertingConfig: ", "DatasourceId", datasourceId)
+	base.log.Info("RoutePostAlertingConfig: ", "Recipient", recipient)
 	base.log.Info("RoutePostAlertingConfig: ", "body", body)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base AlertmanagerApiBase) RoutePostAmAlerts(c *models.ReqContext, body apimodels.PostableAlerts) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RoutePostAmAlerts: ", "DatasourceId", datasourceId)
+	base.log.Info("RoutePostAmAlerts: ", "Recipient", recipient)
 	base.log.Info("RoutePostAmAlerts: ", "body", body)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }

pkg/services/ngalert/api/api_alertmanager_mock.go

@@ -524,29 +524,29 @@ type AlertmanagerApiMock struct {
 }
 
 func (mock AlertmanagerApiMock) RouteCreateSilence(c *models.ReqContext, body apimodels.SilenceBody) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteCreateSilence: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteCreateSilence: ", "Recipient", recipient)
 	mock.log.Info("RouteCreateSilence: ", "body", body)
 	return response.JSON(http.StatusAccepted, util.DynMap{"message": "silence created"})
 }
 
 func (mock AlertmanagerApiMock) RouteDeleteAlertingConfig(c *models.ReqContext) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteDeleteAlertingConfig: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteDeleteAlertingConfig: ", "Recipient", recipient)
 	return response.JSON(http.StatusOK, util.DynMap{"message": "config deleted"})
 }
 
 func (mock AlertmanagerApiMock) RouteDeleteSilence(c *models.ReqContext) response.Response {
 	silenceID := c.Params(":SilenceId")
 	mock.log.Info("RouteDeleteSilence: ", "SilenceId", silenceID)
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteDeleteSilence: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteDeleteSilence: ", "Recipient", recipient)
 	return response.JSON(http.StatusOK, util.DynMap{"message": "silence deleted"})
 }
 
 func (mock AlertmanagerApiMock) RouteGetAlertingConfig(c *models.ReqContext) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteGetAlertingConfig: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteGetAlertingConfig: ", "Recipient", recipient)
 	// now := time.Now()
 	result := apimodels.GettableUserConfig{
 		TemplateFiles: map[string]string{
@@ -554,7 +554,7 @@ func (mock AlertmanagerApiMock) RouteGetAlertingConfig(c *models.ReqContext) res
 			"tmpl2": "val2",
 		},
 		AlertmanagerConfig: apimodels.GettableApiAlertingConfig{
-			Config: config.Config{
+			Config: apimodels.Config{
 				Global:       &config.GlobalConfig{},
 				Route:        &config.Route{},
 				InhibitRules: []*config.InhibitRule{},
@@ -594,8 +594,8 @@ func (mock AlertmanagerApiMock) RouteGetAlertingConfig(c *models.ReqContext) res
 }
 
 func (mock AlertmanagerApiMock) RouteGetAmAlertGroups(c *models.ReqContext) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteGetAmAlertGroups: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteGetAmAlertGroups: ", "Recipient", recipient)
 	now := time.Now()
 	result := apimodels.AlertGroups{
 		&amv2.AlertGroup{
@@ -715,8 +715,8 @@ func (mock AlertmanagerApiMock) RouteGetAmAlertGroups(c *models.ReqContext) resp
 }
 
 func (mock AlertmanagerApiMock) RouteGetAmAlerts(c *models.ReqContext) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteGetAmAlerts: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteGetAmAlerts: ", "Recipient", recipient)
 	now := time.Now()
 	result := apimodels.GettableAlerts{
 		&amv2.GettableAlert{
@@ -786,8 +786,8 @@ func (mock AlertmanagerApiMock) RouteGetAmAlerts(c *models.ReqContext) response.
 func (mock AlertmanagerApiMock) RouteGetSilence(c *models.ReqContext) response.Response {
 	silenceID := c.Params(":SilenceId")
 	mock.log.Info("RouteGetSilence: ", "SilenceId", silenceID)
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteGetSilence: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteGetSilence: ", "Recipient", recipient)
 	now := time.Now()
 	result := apimodels.GettableSilence{
 		ID: stringPtr("id"),
@@ -818,8 +818,8 @@ func (mock AlertmanagerApiMock) RouteGetSilence(c *models.ReqContext) response.R
 }
 
 func (mock AlertmanagerApiMock) RouteGetSilences(c *models.ReqContext) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteGetSilences: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteGetSilences: ", "Recipient", recipient)
 	now := time.Now()
 	result := apimodels.GettableSilences{
 		&amv2.GettableSilence{
@@ -877,15 +877,15 @@ func (mock AlertmanagerApiMock) RouteGetSilences(c *models.ReqContext) response.
 }
 
 func (mock AlertmanagerApiMock) RoutePostAlertingConfig(c *models.ReqContext, body apimodels.PostableUserConfig) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RoutePostAlertingConfig: ", "DatasourceId", datasourceID)
+	mock.log.Info("RoutePostAlertingConfig: ", "Recipient", recipient)
 	mock.log.Info("RoutePostAlertingConfig: ", "body", body)
 	return response.JSON(http.StatusAccepted, util.DynMap{"message": "configuration created"})
 }
 
 func (mock AlertmanagerApiMock) RoutePostAmAlerts(c *models.ReqContext, body apimodels.PostableAlerts) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RoutePostAmAlerts: ", "DatasourceId", datasourceID)
+	mock.log.Info("RoutePostAmAlerts: ", "Recipient", recipient)
 	mock.log.Info("RoutePostAmAlerts: ", "body", body)
 	return response.JSON(http.StatusOK, util.DynMap{"message": "alerts created"})
 }

pkg/services/ngalert/api/api_prometheus_base.go

@@ -26,19 +26,19 @@ type PrometheusApiBase struct {
 
 func (api *API) RegisterPrometheusApiEndpoints(srv PrometheusApiService) {
 	api.RouteRegister.Group("", func(group routing.RouteRegister) {
-		group.Get(toMacaronPath("/prometheus/{DatasourceId}/api/v1/alerts"), routing.Wrap(srv.RouteGetAlertStatuses))
+		group.Get(toMacaronPath("/prometheus/{Recipient}/api/v1/alerts"), routing.Wrap(srv.RouteGetAlertStatuses))
-		group.Get(toMacaronPath("/prometheus/{DatasourceId}/api/v1/rules"), routing.Wrap(srv.RouteGetRuleStatuses))
+		group.Get(toMacaronPath("/prometheus/{Recipient}/api/v1/rules"), routing.Wrap(srv.RouteGetRuleStatuses))
 	})
 }
 
 func (base PrometheusApiBase) RouteGetAlertStatuses(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteGetAlertStatuses: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteGetAlertStatuses: ", "Recipient", recipient)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base PrometheusApiBase) RouteGetRuleStatuses(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteGetRuleStatuses: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteGetRuleStatuses: ", "Recipient", recipient)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }

pkg/services/ngalert/api/api_prometheus_mock.go

@@ -15,8 +15,8 @@ type PrometheusApiMock struct {
 }
 
 func (mock PrometheusApiMock) RouteGetAlertStatuses(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteGetAlertStatuses: ", "DatasourceId", datasourceId)
+	mock.log.Info("RouteGetAlertStatuses: ", "Recipient", recipient)
 	now := time.Now()
 	result := apimodels.AlertResponse{
 		Data: apimodels.AlertDiscovery{
@@ -54,8 +54,8 @@ func (mock PrometheusApiMock) RouteGetAlertStatuses(c *models.ReqContext) respon
 }
 
 func (mock PrometheusApiMock) RouteGetRuleStatuses(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteGetRuleStatuses: ", "DatasourceId", datasourceId)
+	mock.log.Info("RouteGetRuleStatuses: ", "Recipient", recipient)
 	now := time.Now()
 	result := apimodels.RuleResponse{
 		Data: apimodels.RuleDiscovery{

pkg/services/ngalert/api/api_ruler_base.go

@@ -32,26 +32,26 @@ type RulerApiBase struct {
 
 func (api *API) RegisterRulerApiEndpoints(srv RulerApiService) {
 	api.RouteRegister.Group("", func(group routing.RouteRegister) {
-		group.Delete(toMacaronPath("/ruler/{DatasourceId}/api/v1/rules/{Namespace}"), routing.Wrap(srv.RouteDeleteNamespaceRulesConfig))
+		group.Delete(toMacaronPath("/ruler/{Recipient}/api/v1/rules/{Namespace}"), routing.Wrap(srv.RouteDeleteNamespaceRulesConfig))
-		group.Delete(toMacaronPath("/ruler/{DatasourceId}/api/v1/rules/{Namespace}/{Groupname}"), routing.Wrap(srv.RouteDeleteRuleGroupConfig))
+		group.Delete(toMacaronPath("/ruler/{Recipient}/api/v1/rules/{Namespace}/{Groupname}"), routing.Wrap(srv.RouteDeleteRuleGroupConfig))
-		group.Get(toMacaronPath("/ruler/{DatasourceId}/api/v1/rules/{Namespace}"), routing.Wrap(srv.RouteGetNamespaceRulesConfig))
+		group.Get(toMacaronPath("/ruler/{Recipient}/api/v1/rules/{Namespace}"), routing.Wrap(srv.RouteGetNamespaceRulesConfig))
-		group.Get(toMacaronPath("/ruler/{DatasourceId}/api/v1/rules/{Namespace}/{Groupname}"), routing.Wrap(srv.RouteGetRulegGroupConfig))
+		group.Get(toMacaronPath("/ruler/{Recipient}/api/v1/rules/{Namespace}/{Groupname}"), routing.Wrap(srv.RouteGetRulegGroupConfig))
-		group.Get(toMacaronPath("/ruler/{DatasourceId}/api/v1/rules"), routing.Wrap(srv.RouteGetRulesConfig))
+		group.Get(toMacaronPath("/ruler/{Recipient}/api/v1/rules"), routing.Wrap(srv.RouteGetRulesConfig))
-		group.Post(toMacaronPath("/ruler/{DatasourceId}/api/v1/rules/{Namespace}"), binding.Bind(apimodels.RuleGroupConfig{}), routing.Wrap(srv.RoutePostNameRulesConfig))
+		group.Post(toMacaronPath("/ruler/{Recipient}/api/v1/rules/{Namespace}"), binding.Bind(apimodels.RuleGroupConfig{}), routing.Wrap(srv.RoutePostNameRulesConfig))
 	})
 }
 
 func (base RulerApiBase) RouteDeleteNamespaceRulesConfig(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteDeleteNamespaceRulesConfig: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteDeleteNamespaceRulesConfig: ", "Recipient", recipient)
 	namespace := c.Params(":Namespace")
 	base.log.Info("RouteDeleteNamespaceRulesConfig: ", "Namespace", namespace)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base RulerApiBase) RouteDeleteRuleGroupConfig(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteDeleteRuleGroupConfig: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteDeleteRuleGroupConfig: ", "Recipient", recipient)
 	namespace := c.Params(":Namespace")
 	base.log.Info("RouteDeleteRuleGroupConfig: ", "Namespace", namespace)
 	groupname := c.Params(":Groupname")
@@ -60,16 +60,16 @@ func (base RulerApiBase) RouteDeleteRuleGroupConfig(c *models.ReqContext) respon
 }
 
 func (base RulerApiBase) RouteGetNamespaceRulesConfig(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteGetNamespaceRulesConfig: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteGetNamespaceRulesConfig: ", "Recipient", recipient)
 	namespace := c.Params(":Namespace")
 	base.log.Info("RouteGetNamespaceRulesConfig: ", "Namespace", namespace)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base RulerApiBase) RouteGetRulegGroupConfig(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteGetRulegGroupConfig: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteGetRulegGroupConfig: ", "Recipient", recipient)
 	namespace := c.Params(":Namespace")
 	base.log.Info("RouteGetRulegGroupConfig: ", "Namespace", namespace)
 	groupname := c.Params(":Groupname")
@@ -78,14 +78,14 @@ func (base RulerApiBase) RouteGetRulegGroupConfig(c *models.ReqContext) response
 }
 
 func (base RulerApiBase) RouteGetRulesConfig(c *models.ReqContext) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RouteGetRulesConfig: ", "DatasourceId", datasourceId)
+	base.log.Info("RouteGetRulesConfig: ", "Recipient", recipient)
 	return response.Error(http.StatusNotImplemented, "", nil)
 }
 
 func (base RulerApiBase) RoutePostNameRulesConfig(c *models.ReqContext, body apimodels.RuleGroupConfig) response.Response {
-	datasourceId := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	base.log.Info("RoutePostNameRulesConfig: ", "DatasourceId", datasourceId)
+	base.log.Info("RoutePostNameRulesConfig: ", "Recipient", recipient)
 	namespace := c.Params(":Namespace")
 	base.log.Info("RoutePostNameRulesConfig: ", "Namespace", namespace)
 	base.log.Info("RoutePostNameRulesConfig: ", "body", body)

pkg/services/ngalert/api/api_ruler_mock.go

@@ -119,16 +119,16 @@ type RulerApiMock struct {
 }
 
 func (mock RulerApiMock) RouteDeleteNamespaceRulesConfig(c *models.ReqContext) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteDeleteNamespaceRulesConfig: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteDeleteNamespaceRulesConfig: ", "Recipient", recipient)
 	namespace := c.Params(":Namespace")
 	mock.log.Info("RouteDeleteNamespaceRulesConfig: ", "Namespace", namespace)
 	return response.JSON(http.StatusAccepted, util.DynMap{"message": "namespace rules deleted"})
 }
 
 func (mock RulerApiMock) RouteDeleteRuleGroupConfig(c *models.ReqContext) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteDeleteRuleGroupConfig: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteDeleteRuleGroupConfig: ", "Recipient", recipient)
 	namespace := c.Params(":Namespace")
 	mock.log.Info("RouteDeleteRuleGroupConfig: ", "Namespace", namespace)
 	groupname := c.Params(":Groupname")
@@ -137,8 +137,8 @@ func (mock RulerApiMock) RouteDeleteRuleGroupConfig(c *models.ReqContext) respon
 }
 
 func (mock RulerApiMock) RouteGetNamespaceRulesConfig(c *models.ReqContext) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteGetNamespaceRulesConfig: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteGetNamespaceRulesConfig: ", "Recipient", recipient)
 	namespace := c.Params(":Namespace")
 	mock.log.Info("RouteGetNamespaceRulesConfig: ", "Namespace", namespace)
 	result := apimodels.NamespaceConfigResponse{
@@ -181,8 +181,8 @@ func (mock RulerApiMock) RouteGetNamespaceRulesConfig(c *models.ReqContext) resp
 }
 
 func (mock RulerApiMock) RouteGetRulegGroupConfig(c *models.ReqContext) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteGetRulegGroupConfig: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteGetRulegGroupConfig: ", "Recipient", recipient)
 	namespace := c.Params(":Namespace")
 	mock.log.Info("RouteGetRulegGroupConfig: ", "Namespace", namespace)
 	groupname := c.Params(":Groupname")
@@ -212,8 +212,8 @@ func (mock RulerApiMock) RouteGetRulegGroupConfig(c *models.ReqContext) response
 }
 
 func (mock RulerApiMock) RouteGetRulesConfig(c *models.ReqContext) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RouteGetRulesConfig: ", "DatasourceId", datasourceID)
+	mock.log.Info("RouteGetRulesConfig: ", "Recipient", recipient)
 	result := apimodels.NamespaceConfigResponse{
 		"namespace1": []apimodels.RuleGroupConfig{
 			{
@@ -286,8 +286,8 @@ func (mock RulerApiMock) RouteGetRulesConfig(c *models.ReqContext) response.Resp
 }
 
 func (mock RulerApiMock) RoutePostNameRulesConfig(c *models.ReqContext, body apimodels.RuleGroupConfig) response.Response {
-	datasourceID := c.Params(":DatasourceId")
+	recipient := c.Params(":Recipient")
-	mock.log.Info("RoutePostNameRulesConfig: ", "DatasourceId", datasourceID)
+	mock.log.Info("RoutePostNameRulesConfig: ", "Recipient", recipient)
 	namespace := c.Params(":Namespace")
 	mock.log.Info("RoutePostNameRulesConfig: ", "Namespace", namespace)
 	mock.log.Info("RoutePostNameRulesConfig: ", "body", body)

pkg/services/ngalert/api/fork_ruler.go

@@ -2,31 +2,52 @@ package api
 
 import (
 	"fmt"
+	"strconv"
 
 	apimodels "github.com/grafana/alerting-api/pkg/api"
 	"github.com/grafana/grafana/pkg/api/response"
 	"github.com/grafana/grafana/pkg/models"
+	"github.com/grafana/grafana/pkg/services/datasources"
 )
 
 // ForkedRuler will validate and proxy requests to the correct backend type depending on the datasource.
 type ForkedRuler struct {
 	LotexRuler, GrafanaRuler RulerApiService
+	DatasourceCache          datasources.CacheService
 }
 
-func NewForkedRuler(lotex, grafana RulerApiService) *ForkedRuler {
+func NewForkedRuler(datasourceCache datasources.CacheService, lotex, grafana RulerApiService) *ForkedRuler {
 	return &ForkedRuler{
 		LotexRuler:      lotex,
 		GrafanaRuler:    grafana,
+		DatasourceCache: datasourceCache,
 	}
 }
 
-func (r *ForkedRuler) backendType(ctx *models.ReqContext) apimodels.Backend {
+func (r *ForkedRuler) backendType(ctx *models.ReqContext) (apimodels.Backend, error) {
-	// TODO: implement, hardcoded for now
+	recipient := ctx.Params("Recipient")
-	return apimodels.LoTexRulerBackend
+	if recipient == apimodels.GrafanaBackend.String() {
+		return apimodels.GrafanaBackend, nil
+	}
+	if datasourceID, err := strconv.ParseInt(recipient, 10, 64); err == nil {
+		if ds, err := r.DatasourceCache.GetDatasource(datasourceID, ctx.SignedInUser, ctx.SkipCache); err == nil {
+			switch ds.Type {
+			case "loki", "prometheus":
+				return apimodels.LoTexRulerBackend, nil
+			default:
+				return 0, fmt.Errorf("unexpected backend type (%v)", ds.Type)
+			}
+		}
+	}
+	return 0, fmt.Errorf("unexpected backend type (%v)", recipient)
 }
 
 func (r *ForkedRuler) RouteDeleteNamespaceRulesConfig(ctx *models.ReqContext) response.Response {
-	switch t := r.backendType(ctx); t {
+	t, err := r.backendType(ctx)
+	if err != nil {
+		return response.Error(400, err.Error(), nil)
+	}
+	switch t {
 	case apimodels.GrafanaBackend:
 		return r.GrafanaRuler.RouteDeleteNamespaceRulesConfig(ctx)
 	case apimodels.LoTexRulerBackend:
@@ -37,7 +58,11 @@ func (r *ForkedRuler) RouteDeleteNamespaceRulesConfig(ctx *models.ReqContext) re
 }
 
 func (r *ForkedRuler) RouteDeleteRuleGroupConfig(ctx *models.ReqContext) response.Response {
-	switch t := r.backendType(ctx); t {
+	t, err := r.backendType(ctx)
+	if err != nil {
+		return response.Error(400, err.Error(), nil)
+	}
+	switch t {
 	case apimodels.GrafanaBackend:
 		return r.GrafanaRuler.RouteDeleteRuleGroupConfig(ctx)
 	case apimodels.LoTexRulerBackend:
@@ -48,7 +73,11 @@ func (r *ForkedRuler) RouteDeleteRuleGroupConfig(ctx *models.ReqContext) respons
 }
 
 func (r *ForkedRuler) RouteGetNamespaceRulesConfig(ctx *models.ReqContext) response.Response {
-	switch t := r.backendType(ctx); t {
+	t, err := r.backendType(ctx)
+	if err != nil {
+		return response.Error(400, err.Error(), nil)
+	}
+	switch t {
 	case apimodels.GrafanaBackend:
 		return r.GrafanaRuler.RouteGetNamespaceRulesConfig(ctx)
 	case apimodels.LoTexRulerBackend:
@@ -59,7 +88,11 @@ func (r *ForkedRuler) RouteGetNamespaceRulesConfig(ctx *models.ReqContext) respo
 }
 
 func (r *ForkedRuler) RouteGetRulegGroupConfig(ctx *models.ReqContext) response.Response {
-	switch t := r.backendType(ctx); t {
+	t, err := r.backendType(ctx)
+	if err != nil {
+		return response.Error(400, err.Error(), nil)
+	}
+	switch t {
 	case apimodels.GrafanaBackend:
 		return r.GrafanaRuler.RouteGetRulegGroupConfig(ctx)
 	case apimodels.LoTexRulerBackend:
@@ -70,7 +103,11 @@ func (r *ForkedRuler) RouteGetRulegGroupConfig(ctx *models.ReqContext) response.
 }
 
 func (r *ForkedRuler) RouteGetRulesConfig(ctx *models.ReqContext) response.Response {
-	switch t := r.backendType(ctx); t {
+	t, err := r.backendType(ctx)
+	if err != nil {
+		return response.Error(400, err.Error(), nil)
+	}
+	switch t {
 	case apimodels.GrafanaBackend:
 		return r.GrafanaRuler.RouteGetRulesConfig(ctx)
 	case apimodels.LoTexRulerBackend:
@@ -81,7 +118,10 @@ func (r *ForkedRuler) RouteGetRulesConfig(ctx *models.ReqContext) response.Respo
 }
 
 func (r *ForkedRuler) RoutePostNameRulesConfig(ctx *models.ReqContext, conf apimodels.RuleGroupConfig) response.Response {
-	backendType := r.backendType(ctx)
+	backendType, err := r.backendType(ctx)
+	if err != nil {
+		return response.Error(400, err.Error(), nil)
+	}
 	payloadType := conf.Type()
 
 	if backendType != payloadType {

pkg/services/ngalert/api/lotex.go

@@ -57,7 +57,7 @@ func (r *LotexRuler) withReq(
 ) response.Response {
 	newCtx, resp := replacedResponseWriter(ctx)
 	newCtx.Req.Request = req
-	r.DataProxy.ProxyDatasourceRequestWithID(newCtx, ctx.ParamsInt64("DatasourceId"))
+	r.DataProxy.ProxyDatasourceRequestWithID(newCtx, ctx.ParamsInt64("Recipient"))
 
 	status := resp.Status()
 	if status >= 400 {

pkg/services/ngalert/api/util_test.go

@@ -16,8 +16,8 @@ func TestToMacaronPath(t *testing.T) {
 			expectedOutputPath: "",
 		},
 		{
-			inputPath:          "/ruler/{DatasourceId}/api/v1/rules/{Namespace}/{Groupname}",
+			inputPath:          "/ruler/{Recipient}/api/v1/rules/{Namespace}/{Groupname}",
-			expectedOutputPath: "/ruler/:DatasourceId/api/v1/rules/:Namespace/:Groupname",
+			expectedOutputPath: "/ruler/:Recipient/api/v1/rules/:Namespace/:Groupname",
 		},
 	}
 	for _, tc := range testCases {