feat: boilerplate for implementing datadog provider implemented

Signed-off-by: Sudipto Baral <[email protected]>

metrics-operator/controllers/common/providers/common.go

@@ -3,3 +3,4 @@ package providers
 const DynatraceProviderName = "dynatrace"
 const DynatraceDQLProviderName = "dql"
 const PrometheusProviderName = "prometheus"
+const DataDogProviderName = "datadog"

metrics-operator/controllers/common/providers/datadog/datadog.go

@@ -0,0 +1,22 @@
+package datadog
+
+import (
+	"context"
+	"github.com/go-logr/logr"
+	metricsapi "github.com/keptn/lifecycle-toolkit/metrics-operator/api/v1alpha2"
+	//nolint:gci
+	"net/http" //nolint:gci
+	"sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+type KeptnDataDogProvider struct {
+	Log        logr.Logger
+	HttpClient http.Client
+	K8sClient  client.Client
+}
+
+// EvaluateQuery fetches the SLI values from datadog provider
+func (r *KeptnDataDogProvider) EvaluateQuery(ctx context.Context, metric metricsapi.KeptnMetric, provider metricsapi.KeptnMetricsProvider) (string, []byte, error) {
+	//TODO implement me
+	panic("implement me")
+}

metrics-operator/controllers/common/providers/provider.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/go-logr/logr"
 	metricsapi "github.com/keptn/lifecycle-toolkit/metrics-operator/api/v1alpha2"
+	"github.com/keptn/lifecycle-toolkit/metrics-operator/controllers/common/providers/datadog"
 	"github.com/keptn/lifecycle-toolkit/metrics-operator/controllers/common/providers/dynatrace"
 	"github.com/keptn/lifecycle-toolkit/metrics-operator/controllers/common/providers/prometheus"
 	"sigs.k8s.io/controller-runtime/pkg/client"
@@ -37,6 +38,11 @@ func NewProvider(provider string, log logr.Logger, k8sClient client.Client) (Kep
 			k8sClient,
 			dynatrace.WithLogger(log),
 		), nil
+	case DataDogProviderName:
+		return &datadog.KeptnDataDogProvider{
+			Log:        log,
+			HttpClient: http.Client{},
+		}, nil
 	default:
 		return nil, fmt.Errorf("provider %s not supported", provider)
 	}