AzureMonitor: Move Application Insights and Insight Analytics to a deprecated package (#45834)

pkg/tsdb/azuremonitor/deprecated/httpclient.go

@@ -0,0 +1,20 @@
+package deprecated
+
+import (
+	"net/http"
+
+	"github.com/grafana/grafana-plugin-sdk-go/backend/httpclient"
+)
+
+func GetAppInsightsMiddleware(url, appInsightsApiKey string) httpclient.Middleware {
+	if appInsightsApiKey != "" && url == AzAppInsights.URL || url == AzChinaAppInsights.URL {
+		// Inject API-Key for AppInsights
+		return httpclient.MiddlewareFunc(func(opts httpclient.Options, next http.RoundTripper) http.RoundTripper {
+			return httpclient.RoundTripperFunc(func(req *http.Request) (*http.Response, error) {
+				req.Header.Set("X-API-Key", appInsightsApiKey)
+				return next.RoundTrip(req)
+			})
+		})
+	}
+	return nil
+}