Merge pull request #2773 from murgatroid99/node_null_call_host

Expose per-call host override option in Node

src/node/examples/perf_test.js

@@ -63,7 +63,7 @@ function runTest(iterations, callback) {
           var timeDiff = process.hrtime(startTime);
           intervals[i] = timeDiff[0] * 1000000 + timeDiff[1] / 1000;
           next(i+1);
-        }, {}, deadline);
+        }, {}, {deadline: deadline});
       }
     }
     next(0);

src/node/ext/call.cc

@@ -510,10 +510,21 @@ NAN_METHOD(Call::New) {
       NanUtf8String method(args[1]);
       double deadline = args[2]->NumberValue();
       grpc_channel *wrapped_channel = channel->GetWrappedChannel();
-      grpc_call *wrapped_call = grpc_channel_create_call(
+      grpc_call *wrapped_call;
+      if (args[3]->IsString()) {
+        NanUtf8String host_override(args[3]);
+        wrapped_call = grpc_channel_create_call(
             wrapped_channel, NULL, GRPC_PROPAGATE_DEFAULTS,
-          CompletionQueueAsyncWorker::GetQueue(), *method, channel->GetHost(),
-          MillisecondsToTimespec(deadline));
+            CompletionQueueAsyncWorker::GetQueue(), *method,
+            *host_override, MillisecondsToTimespec(deadline));
+      } else if (args[3]->IsUndefined() || args[3]->IsNull()) {
+        wrapped_call = grpc_channel_create_call(
+            wrapped_channel, NULL, GRPC_PROPAGATE_DEFAULTS,
+            CompletionQueueAsyncWorker::GetQueue(), *method,
+            NULL, MillisecondsToTimespec(deadline));
+      } else {
+        return NanThrowTypeError("Call's fourth argument must be a string");
+      }
       call = new Call(wrapped_call);
       args.This()->SetHiddenValue(NanNew("channel_"), channel_object);
     }

src/node/ext/channel.cc

@@ -59,14 +59,12 @@ using v8::Value;
 NanCallback *Channel::constructor;
 Persistent<FunctionTemplate> Channel::fun_tpl;
 
-Channel::Channel(grpc_channel *channel, NanUtf8String *host)
-    : wrapped_channel(channel), host(host) {}
+Channel::Channel(grpc_channel *channel) : wrapped_channel(channel) {}
 
 Channel::~Channel() {
   if (wrapped_channel != NULL) {
     grpc_channel_destroy(wrapped_channel);
   }
-  delete host;
 }
 
 void Channel::Init(Handle<Object> exports) {
@@ -91,8 +89,6 @@ bool Channel::HasInstance(Handle<Value> val) {
 
 grpc_channel *Channel::GetWrappedChannel() { return this->wrapped_channel; }
 
-char *Channel::GetHost() { return **this->host; }
-
 NAN_METHOD(Channel::New) {
   NanScope();
 
@@ -103,8 +99,7 @@ NAN_METHOD(Channel::New) {
     }
     grpc_channel *wrapped_channel;
     // Owned by the Channel object
-    NanUtf8String *host = new NanUtf8String(args[0]);
-    NanUtf8String *host_override = NULL;
+    NanUtf8String host(args[0]);
     grpc_credentials *creds;
     if (!Credentials::HasInstance(args[1])) {
       return NanThrowTypeError(
@@ -116,12 +111,9 @@ NAN_METHOD(Channel::New) {
     grpc_channel_args *channel_args_ptr;
     if (args[2]->IsUndefined()) {
       channel_args_ptr = NULL;
-      wrapped_channel = grpc_insecure_channel_create(**host, NULL);
+      wrapped_channel = grpc_insecure_channel_create(*host, NULL);
     } else if (args[2]->IsObject()) {
       Handle<Object> args_hash(args[2]->ToObject()->Clone());
-      if (args_hash->HasOwnProperty(NanNew(GRPC_SSL_TARGET_NAME_OVERRIDE_ARG))) {
-        host_override = new NanUtf8String(args_hash->Get(NanNew(GRPC_SSL_TARGET_NAME_OVERRIDE_ARG)));
-      }
       Handle<Array> keys(args_hash->GetOwnPropertyNames());
       grpc_channel_args channel_args;
       channel_args.num_args = keys->Length();
@@ -153,20 +145,15 @@ NAN_METHOD(Channel::New) {
       return NanThrowTypeError("Channel expects a string and an object");
     }
     if (creds == NULL) {
-      wrapped_channel = grpc_insecure_channel_create(**host, channel_args_ptr);
+      wrapped_channel = grpc_insecure_channel_create(*host, channel_args_ptr);
     } else {
       wrapped_channel =
-          grpc_secure_channel_create(creds, **host, channel_args_ptr);
+          grpc_secure_channel_create(creds, *host, channel_args_ptr);
     }
     if (channel_args_ptr != NULL) {
       free(channel_args_ptr->args);
     }
-    Channel *channel;
-    if (host_override == NULL) {
-      channel = new Channel(wrapped_channel, host);
-    } else {
-      channel = new Channel(wrapped_channel, host_override);
-    }
+    Channel *channel = new Channel(wrapped_channel);
     channel->Wrap(args.This());
     NanReturnValue(args.This());
   } else {

src/node/ext/channel.h

@@ -53,11 +53,8 @@ class Channel : public ::node::ObjectWrap {
   /* Returns the grpc_channel struct that this object wraps */
   grpc_channel *GetWrappedChannel();
 
-  /* Return the hostname that this channel connects to */
-  char *GetHost();
-
  private:
-  explicit Channel(grpc_channel *channel, NanUtf8String *host);
+  explicit Channel(grpc_channel *channel);
   ~Channel();
 
   // Prevent copying
@@ -71,7 +68,6 @@ class Channel : public ::node::ObjectWrap {
   static v8::Persistent<v8::FunctionTemplate> fun_tpl;
 
   grpc_channel *wrapped_channel;
-  NanUtf8String *host;
 };
 
 }  // namespace node

src/node/interop/interop_client.js

@@ -67,7 +67,7 @@ function zeroBuffer(size) {
  *     primarily for use with mocha
  */
 function emptyUnary(client, done) {
-  var call = client.emptyCall({}, function(err, resp) {
+  client.emptyCall({}, function(err, resp) {
     assert.ifError(err);
     if (done) {
       done();
@@ -89,7 +89,7 @@ function largeUnary(client, done) {
       body: zeroBuffer(271828)
     }
   };
-  var call = client.unaryCall(arg, function(err, resp) {
+  client.unaryCall(arg, function(err, resp) {
     assert.ifError(err);
     assert.strictEqual(resp.payload.type, 'COMPRESSABLE');
     assert.strictEqual(resp.payload.body.length, 314159);
@@ -259,7 +259,7 @@ function cancelAfterFirstResponse(client, done) {
 function timeoutOnSleepingServer(client, done) {
   var deadline = new Date();
   deadline.setMilliseconds(deadline.getMilliseconds() + 1);
-  var call = client.fullDuplexCall(null, deadline);
+  var call = client.fullDuplexCall(null, {deadline: deadline});
   call.write({
     payload: {body: zeroBuffer(27182)}
   });
@@ -293,7 +293,7 @@ function authTest(expected_user, scope, client, done) {
       fill_username: true,
       fill_oauth_scope: true
     };
-    var call = client.unaryCall(arg, function(err, resp) {
+    client.unaryCall(arg, function(err, resp) {
       assert.ifError(err);
       assert.strictEqual(resp.payload.type, 'COMPRESSABLE');
       assert.strictEqual(resp.payload.body.length, 314159);
@@ -328,7 +328,7 @@ function oauth2Test(expected_user, scope, per_rpc, client, done) {
       };
       var makeTestCall = function(error, client_metadata) {
         assert.ifError(error);
-        var call = client.unaryCall(arg, function(err, resp) {
+        client.unaryCall(arg, function(err, resp) {
           assert.ifError(err);
           assert.strictEqual(resp.username, expected_user);
           assert.strictEqual(resp.oauth_scope, AUTH_SCOPE_RESPONSE);
@@ -393,6 +393,7 @@ function runTest(address, host_override, test_case, tls, test_ca, done) {
     creds = grpc.Credentials.createSsl(ca_data);
     if (host_override) {
       options['grpc.ssl_target_name_override'] = host_override;
+      options['grpc.default_authority'] = host_override;
     }
   } else {
     creds = grpc.Credentials.createInsecure();

src/node/src/client.js

@@ -207,6 +207,25 @@ ClientReadableStream.prototype.getPeer = getPeer;
 ClientWritableStream.prototype.getPeer = getPeer;
 ClientDuplexStream.prototype.getPeer = getPeer;
 
+/**
+ * Get a call object built with the provided options. Keys for options are
+ * 'deadline', which takes a date or number, and 'host', which takes a string
+ * and overrides the hostname to connect to.
+ * @param {Object} options Options map.
+ */
+function getCall(channel, method, options) {
+  var deadline;
+  var host;
+  if (options) {
+    deadline = options.deadline;
+    host = options.host;
+  }
+  if (deadline === undefined) {
+    deadline = Infinity;
+  }
+  return new grpc.Call(channel, method, deadline, host);
+}
+
 /**
  * Get a function that can make unary requests to the specified method.
  * @param {string} method The name of the method to request
@@ -226,17 +245,13 @@ function makeUnaryRequestFunction(method, serialize, deserialize) {
    *     response is received
    * @param {array=} metadata Array of metadata key/value pairs to add to the
    *     call
-   * @param {(number|Date)=} deadline The deadline for processing this request.
-   *     Defaults to infinite future
+   * @param {Object=} options Options map
    * @return {EventEmitter} An event emitter for stream related events
    */
-  function makeUnaryRequest(argument, callback, metadata, deadline) {
+  function makeUnaryRequest(argument, callback, metadata, options) {
     /* jshint validthis: true */
-    if (deadline === undefined) {
-      deadline = Infinity;
-    }
     var emitter = new EventEmitter();
-    var call = new grpc.Call(this.channel, method, deadline);
+    var call = getCall(this.channel, method, options);
     if (metadata === null || metadata === undefined) {
       metadata = {};
     }
@@ -300,16 +315,12 @@ function makeClientStreamRequestFunction(method, serialize, deserialize) {
    *     response is received
    * @param {array=} metadata Array of metadata key/value pairs to add to the
    *     call
-   * @param {(number|Date)=} deadline The deadline for processing this request.
-   *     Defaults to infinite future
+   * @param {Object=} options Options map
    * @return {EventEmitter} An event emitter for stream related events
    */
-  function makeClientStreamRequest(callback, metadata, deadline) {
+  function makeClientStreamRequest(callback, metadata, options) {
     /* jshint validthis: true */
-    if (deadline === undefined) {
-      deadline = Infinity;
-    }
-    var call = new grpc.Call(this.channel, method, deadline);
+    var call = getCall(this.channel, method, options);
     if (metadata === null || metadata === undefined) {
       metadata = {};
     }
@@ -374,16 +385,12 @@ function makeServerStreamRequestFunction(method, serialize, deserialize) {
    *     serialize
    * @param {array=} metadata Array of metadata key/value pairs to add to the
    *     call
-   * @param {(number|Date)=} deadline The deadline for processing this request.
-   *     Defaults to infinite future
+   * @param {Object} options Options map
    * @return {EventEmitter} An event emitter for stream related events
    */
-  function makeServerStreamRequest(argument, metadata, deadline) {
+  function makeServerStreamRequest(argument, metadata, options) {
     /* jshint validthis: true */
-    if (deadline === undefined) {
-      deadline = Infinity;
-    }
-    var call = new grpc.Call(this.channel, method, deadline);
+    var call = getCall(this.channel, method, options);
     if (metadata === null || metadata === undefined) {
       metadata = {};
     }
@@ -446,16 +453,12 @@ function makeBidiStreamRequestFunction(method, serialize, deserialize) {
    * @this {SurfaceClient} Client object. Must have a channel member.
    * @param {array=} metadata Array of metadata key/value pairs to add to the
    *     call
-   * @param {(number|Date)=} deadline The deadline for processing this request.
-   *     Defaults to infinite future
+   * @param {Options} options Options map
    * @return {EventEmitter} An event emitter for stream related events
    */
-  function makeBidiStreamRequest(metadata, deadline) {
+  function makeBidiStreamRequest(metadata, options) {
     /* jshint validthis: true */
-    if (deadline === undefined) {
-      deadline = Infinity;
-    }
-    var call = new grpc.Call(this.channel, method, deadline);
+    var call = getCall(this.channel, method, options);
     if (metadata === null || metadata === undefined) {
       metadata = {};
     }

src/node/test/call_test.js

@@ -84,6 +84,11 @@ describe('call', function() {
            new grpc.Call(channel, 'method', 0);
          });
        });
+    it('should accept an optional fourth string parameter', function() {
+      assert.doesNotThrow(function() {
+        new grpc.Call(channel, 'method', new Date(), 'host_override');
+      });
+    });
     it('should fail with a closed channel', function() {
       var local_channel = new grpc.Channel('hostname', insecureCreds);
       local_channel.close();

src/node/test/end_to_end_test.js

@@ -74,8 +74,6 @@ describe('end-to-end', function() {
   });
   it('should start and end a request without error', function(complete) {
     var done = multiDone(complete, 2);
-    var deadline = new Date();
-    deadline.setSeconds(deadline.getSeconds() + 3);
     var status_text = 'xyz';
     var call = new grpc.Call(channel,
                              'dummy_method',
@@ -126,8 +124,6 @@ describe('end-to-end', function() {
   });
   it('should successfully send and receive metadata', function(complete) {
     var done = multiDone(complete, 2);
-    var deadline = new Date();
-    deadline.setSeconds(deadline.getSeconds() + 3);
     var status_text = 'xyz';
     var call = new grpc.Call(channel,
                              'dummy_method',
@@ -184,8 +180,6 @@ describe('end-to-end', function() {
     var req_text = 'client_request';
     var reply_text = 'server_response';
     var done = multiDone(complete, 2);
-    var deadline = new Date();
-    deadline.setSeconds(deadline.getSeconds() + 3);
     var status_text = 'success';
     var call = new grpc.Call(channel,
                              'dummy_method',
@@ -241,8 +235,6 @@ describe('end-to-end', function() {
   it('should send multiple messages', function(complete) {
     var done = multiDone(complete, 2);
     var requests = ['req1', 'req2'];
-    var deadline = new Date();
-    deadline.setSeconds(deadline.getSeconds() + 3);
     var status_text = 'xyz';
     var call = new grpc.Call(channel,
                              'dummy_method',