Fix a TypeError of url.parse (#640)

* Fix a TypeError of url.parse

* Update changelog

* Add a test for http2

CHANGELOG.md

@@ -3,6 +3,7 @@
 All notable changes to this project will be documented in this file.
 
 ## Unreleased
+- Fix a TypeError of url.parse (#640)
 
 ## 0.0.17 - 2019-09-03
 - fix: allow override global trace params limits (#643)

packages/opencensus-instrumentation-http2/src/http2.ts

@@ -78,7 +78,7 @@ export class Http2Plugin extends HttpPlugin {
     return (original: ConnectFunction): Func<http2.ClientHttp2Session> => {
       return function patchedConnect(
         this: Http2Plugin,
-        authority: string
+        authority: string | url.URL
       ): http2.ClientHttp2Session {
         const client = original.apply(this, arguments);
         shimmer.wrap(client, 'request', original =>
@@ -94,7 +94,7 @@ export class Http2Plugin extends HttpPlugin {
     const plugin = this;
     return (
       original: RequestFunction,
-      authority: string
+      authority: string | url.URL
     ): Func<http2.ClientHttp2Stream> => {
       return function patchedRequest(
         this: http2.Http2Session,
@@ -146,7 +146,7 @@ export class Http2Plugin extends HttpPlugin {
   private getMakeHttp2RequestTraceFunction(
     request: http2.ClientHttp2Stream,
     headers: http2.OutgoingHttpHeaders,
-    authority: string,
+    authority: string | url.URL,
     plugin: Http2Plugin
   ): Func<http2.ClientHttp2Stream> {
     return (span: Span): http2.ClientHttp2Stream => {
@@ -176,7 +176,10 @@ export class Http2Plugin extends HttpPlugin {
         const userAgent =
           headers['user-agent'] || headers['User-Agent'] || null;
 
-        const host = url.parse(authority).host;
+        const host = (authority instanceof url.URL
+          ? authority
+          : url.parse(authority)
+        ).host;
         if (host) {
           span.addAttribute(Http2Plugin.ATTRIBUTE_HTTP_HOST, host);
         }

packages/opencensus-instrumentation-http2/test/test-http2.ts

@@ -27,6 +27,7 @@ import * as semver from 'semver';
 
 import { Http2Plugin, plugin } from '../src/';
 import { IncomingHttpHeaders, ServerHttp2Stream } from 'http2';
+import { URL } from 'url';
 
 const VERSION = process.versions.node;
 
@@ -123,9 +124,8 @@ describe('Http2Plugin', () => {
   const serverPort = 8080;
   const serverPort2 = 8081;
   const host = `localhost:${serverPort}`;
-  const host2 = `localhost:${serverPort2}`;
   const authority = `http://${host}`;
-  const authority2 = `http://${host2}`;
+  const authorityUrlObject = new URL('/', `http://${host}/`);
 
   const log = logger.logger();
   const tracer = new CoreTracer();
@@ -161,7 +161,7 @@ describe('Http2Plugin', () => {
     server2.listen(serverPort2);
 
     client = http2.connect(authority);
-    client2 = http2.connect(authority2);
+    client2 = http2.connect(authorityUrlObject);
   });
 
   beforeEach(() => {
@@ -200,6 +200,24 @@ describe('Http2Plugin', () => {
       });
     });
 
+    it('should succeed when the client is connected using the url.URL object (#640)', async () => {
+      const statusCode = 200;
+      const testPath = `/${statusCode}`;
+      const requestOptions = {
+        ':method': 'GET',
+        ':path': testPath,
+      };
+
+      assert.strictEqual(spanVerifier.endedSpans.length, 0);
+
+      await http2Request.get(client2, requestOptions).then(result => {
+        assert.strictEqual(result, statusCode.toString());
+        assert.strictEqual(spanVerifier.endedSpans.length, 2);
+        const span = spanVerifier.endedSpans[1];
+        assertSpanAttributes(span, statusCode, 'GET', host, testPath);
+      });
+    });
+
     const httpErrorCodes = [400, 401, 403, 404, 429, 501, 503, 504, 500];
 
     httpErrorCodes.map(errorCode => {