Merge pull request #2211 from murgatroid99/merge_1.6.x

Merge the 1.6.x branch into master

packages/grpc-js/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@grpc/grpc-js",
-  "version": "1.6.9",
+  "version": "1.6.11",
   "description": "gRPC Library for Node - pure JS implementation",
   "homepage": "https://grpc.io/",
   "repository": "https://github.com/grpc/grpc-node/tree/master/packages/grpc-js",

packages/grpc-js/src/call-stream.ts

@@ -329,6 +329,11 @@ export class Http2CallStream implements Call {
       process.nextTick(() => {
         this.listener?.onReceiveStatus(filteredStatus);
       });
+      /* Leave the http2 stream in flowing state to drain incoming messages, to
+       * ensure that the stream closure completes. The call stream already does
+       * not push more messages after the status is output, so the messages go
+       * nowhere either way. */
+      this.http2Stream?.resume();
       if (this.subchannel) {
         this.subchannel.callUnref();
         this.subchannel.removeDisconnectListener(this.disconnectListener);
@@ -483,7 +488,11 @@ export class Http2CallStream implements Call {
     }
     let details = '';
     if (typeof metadataMap['grpc-message'] === 'string') {
-      details = decodeURI(metadataMap['grpc-message']);
+      try {
+        details = decodeURI(metadataMap['grpc-message']);
+      } catch (e) {
+        details = metadataMap['grpc-messages'] as string;
+      }
       metadata.remove('grpc-message');
       this.trace(
         'received status details string "' + details + '" from server'
@@ -573,8 +582,15 @@ export class Http2CallStream implements Call {
           }
         }
       });
-      stream.on('trailers', this.handleTrailers.bind(this));
+      stream.on('trailers', (headers: http2.IncomingHttpHeaders) => {
+        this.handleTrailers(headers);
+      });
       stream.on('data', (data: Buffer) => {
+        /* If the status has already been output, allow the http2 stream to
+         * drain without processing the data. */
+        if (this.statusOutput) {
+          return;
+        }
         this.trace('receive HTTP/2 data frame of length ' + data.length);
         const messages = this.decoder.write(data);
 
@@ -686,9 +702,6 @@ export class Http2CallStream implements Call {
         }
         this.streamEndWatchers.forEach(watcher => watcher(false));
       });
-      if (!this.pendingRead) {
-        stream.pause();
-      }
       if (this.pendingWrite) {
         if (!this.pendingWriteCallback) {
           throw new Error('Invalid state in write handling code');

packages/grpc-js/src/load-balancer-outlier-detection.ts

@@ -467,7 +467,7 @@ export class OutlierDetectionLoadBalancer implements LoadBalancer {
     // Step 3
     for (const [address, mapEntry] of this.addressMap.entries()) {
       // Step 3.i
-      if (this.getCurrentEjectionPercent() > this.latestConfig.getMaxEjectionPercent()) {
+      if (this.getCurrentEjectionPercent() >= this.latestConfig.getMaxEjectionPercent()) {
         break;
       }
       // Step 3.ii
@@ -500,14 +500,22 @@ export class OutlierDetectionLoadBalancer implements LoadBalancer {
     }
     trace('Running failure percentage check. threshold=' + failurePercentageConfig.threshold + ' request volume threshold=' + failurePercentageConfig.request_volume);
     // Step 1
-    if (this.addressMap.size < failurePercentageConfig.minimum_hosts) {
+    let addressesWithTargetVolume = 0;
+    for (const mapEntry of this.addressMap.values()) {
+      const successes = mapEntry.counter.getLastSuccesses();
+      const failures = mapEntry.counter.getLastFailures();
+      if (successes + failures >= failurePercentageConfig.request_volume) {
+        addressesWithTargetVolume += 1;
+      }
+    }
+    if (addressesWithTargetVolume < failurePercentageConfig.minimum_hosts) {
       return;
     }
     
     // Step 2
     for (const [address, mapEntry] of this.addressMap.entries()) {
       // Step 2.i
-      if (this.getCurrentEjectionPercent() > this.latestConfig.getMaxEjectionPercent()) {
+      if (this.getCurrentEjectionPercent() >= this.latestConfig.getMaxEjectionPercent()) {
         break;
       }
       // Step 2.ii

packages/grpc-js/src/subchannel.ts

@@ -361,12 +361,21 @@ export class Subchannel {
       this.handleDisconnect();
     }, this.keepaliveTimeoutMs);
     this.keepaliveTimeoutId.unref?.();
-    this.session!.ping(
+    try {
-      (err: Error | null, duration: number, payload: Buffer) => {
+      this.session!.ping(
-        this.keepaliveTrace('Received ping response');
+        (err: Error | null, duration: number, payload: Buffer) => {
-        clearTimeout(this.keepaliveTimeoutId);
+          this.keepaliveTrace('Received ping response');
-      }
+          clearTimeout(this.keepaliveTimeoutId);
-    );
+        }
+      );
+    } catch (e) {
+      /* If we fail to send a ping, the connection is no longer functional, so
+       * we should discard it. */
+      this.transitionToState(
+        [ConnectivityState.READY],
+        ConnectivityState.TRANSIENT_FAILURE
+      );
+    }
   }
 
   private startKeepalivePings() {

packages/grpc-js/tsconfig.json

@@ -6,7 +6,8 @@
     "target": "es2017",
     "module": "commonjs",
     "resolveJsonModule": true,
-    "incremental": true
+    "incremental": true,
+    "types": ["mocha"]
   },
   "include": [
     "src/**/*.ts",