Performance http metrics

docs/PERFORMANCE_MONITORING.md

@@ -84,3 +84,41 @@ if (firebaseTrace) {
   firebaseTrace = undefined;
 }
 ```
+
+### `startHttpMetric`
+To be able to interact with a started HTTP metric, you can remember it in a property (in this case `firebaseHttpMetric`):
+
+```typescript
+import { performance as firebasePerformance } from "nativescript-plugin-firebase";
+import { FirebaseHttpMetric } from "nativescript-plugin-firebase/performance/performance";
+
+const firebaseHttpMetric: FirebaseHttpMetric = firebasePerformance.startHttpMetric("https://postman-echo.com/get", "GET");
+```
+
+Now you can call several functions on the remembered metric object, read on below. And don't forget to use `metric.stop` afterwards.
+
+### `metric.setRequestPayloadSize`
+
+```typescript
+if (firebaseHttpMetric) {
+  firebaseHttpMetric.setRequestPayloadSize(42);
+}
+```
+
+### `metric.setHttpResponseCode`
+
+```typescript
+if (firebaseHttpMetric) {
+  firebaseHttpMetric.setHttpResponseCode(200);
+}
+```
+
+### `metric.stop`
+To stop the metric, call `stop` on the remembered metric object:
+
+```typescript
+if (firebaseHttpMetric) {
+  firebaseHttpMetric.stop();
+  firebaseHttpMetric = undefined;
+}
+```

src/performance/performance.android.ts

@@ -4,6 +4,12 @@ export function startTrace(name: string): FirebaseTrace {
   return new FirebaseTrace(trace);
 }
 
+export function startHttpMetric(url: string, method: string) {
+  const httpMetric = com.google.firebase.perf.FirebasePerformance.getInstance().newHttpMetric(url, method);
+  httpMetric.start();
+  return new FirebaseHttpMetric(httpMetric);
+}
+
 export class FirebaseTrace {
   constructor(private nativeTrace: com.google.firebase.perf.metrics.Trace) {
   }
@@ -39,3 +45,19 @@ export class FirebaseTrace {
     this.nativeTrace.stop();
   }
 }
+
+export class FirebaseHttpMetric {
+  constructor(private nativeHttpMetric: com.google.firebase.perf.metrics.HttpMetric) {}
+
+  setRequestPayloadSize(size: number) {
+    this.nativeHttpMetric.setRequestPayloadSize(size);
+  }
+
+  setHttpResponseCode(responseCode: number) {
+    this.nativeHttpMetric.setHttpResponseCode(responseCode);
+  }
+
+  stop(): void {
+    this.nativeHttpMetric.stop();
+  }
+}

src/performance/performance.d.ts

@@ -8,3 +8,11 @@ export declare class FirebaseTrace {
 }
 
 export declare function startTrace(name: string): FirebaseTrace;
+
+export declare class FirebaseHttpMetric {
+  setRequestPayloadSize(size: number): void;
+  setHttpResponseCode(responseCode: number): void;
+  stop(): void;
+}
+
+export declare function startHttpMetric(url: string, method: string): FirebaseHttpMetric;

src/performance/performance.ios.ts

@@ -4,6 +4,12 @@ export function startTrace(name: string): FirebaseTrace {
   return new FirebaseTrace(FIRPerformance.startTraceWithName(name));
 }
 
+export function startHttpMetric(url: string, method: string) {
+  const httpMetric = FIRHTTPMetric.alloc().initWithURLHTTPMethod(NSURL.URLWithString(url), getHttpMethodFromString(method));
+  httpMetric.start();
+  return new FirebaseHttpMetric(httpMetric);
+}
+
 export class FirebaseTrace {
   constructor(private nativeTrace: FIRTrace) {
   }
@@ -32,3 +38,41 @@ export class FirebaseTrace {
     this.nativeTrace.stop();
   }
 }
+
+export class FirebaseHttpMetric {
+  constructor(private nativeHttpMetric: FIRHTTPMetric) {
+  }
+
+  setRequestPayloadSize(size: number) {
+      this.nativeHttpMetric.requestPayloadSize = size;
+  }
+
+  setHttpResponseCode(responseCode: number) {
+      this.nativeHttpMetric.responseCode = responseCode;
+  }
+
+  stop(): void {
+      this.nativeHttpMetric.stop();
+  }
+}
+
+function getHttpMethodFromString(method: string): FIRHTTPMethod {
+  switch (method) {
+      case 'GET':
+          return FIRHTTPMethod.GET;
+      case 'PUT':
+          return FIRHTTPMethod.PUT;
+      case 'POST':
+          return FIRHTTPMethod.POST;
+      case 'DELETE':
+          return FIRHTTPMethod.DELETE;
+      case 'HEAD':
+          return FIRHTTPMethod.HEAD;
+      case 'PATCH':
+          return FIRHTTPMethod.PATCH;
+      case 'OPTIONS':
+          return FIRHTTPMethod.OPTIONS;
+      default:
+          return null;
+  }
+}