Merge pull request #2301 from jcanizales/move-grpcmethodname

Move GRPCMethodName to the Proto-specific gRPC client

13 files changed, 72 insertions, 150 deletions

diff --git a/src/objective-c/GRPCClient/GRPCCall.h b/src/objective-c/GRPCClient/GRPCCall.h
index 33aae10747..cba53fa2f6 100644
--- a/src/objective-c/GRPCClient/GRPCCall.h
+++ b/src/objective-c/GRPCClient/GRPCCall.h
@@ -48,8 +48,6 @@
 #import <Foundation/Foundation.h>
 #import <RxLibrary/GRXWriter.h>
 
-@class GRPCMethodName;
-
 // Key used in |NSError|'s |userInfo| dictionary to store the response metadata sent by the server.
 extern id const kGRPCStatusMetadataKey;
 
@@ -90,7 +88,7 @@ extern id const kGRPCStatusMetadataKey;
 // the specific remote method called).
 // To finish a call right away, invoke cancel.
 - (instancetype)initWithHost:(NSString *)host
-                      method:(GRPCMethodName *)method
+                        path:(NSString *)path
               requestsWriter:(id<GRXWriter>)requestsWriter NS_DESIGNATED_INITIALIZER;
 
 // Finishes the request side of this call, notifies the server that the RPC
diff --git a/src/objective-c/GRPCClient/GRPCCall.m b/src/objective-c/GRPCClient/GRPCCall.m
index 77eebeff76..4ac4e4d37f 100644
--- a/src/objective-c/GRPCClient/GRPCCall.m
+++ b/src/objective-c/GRPCClient/GRPCCall.m
@@ -36,11 +36,9 @@
 #include <grpc/grpc.h>
 #include <grpc/support/time.h>
 
-#import "GRPCMethodName.h"
 #import "private/GRPCChannel.h"
 #import "private/GRPCCompletionQueue.h"
 #import "private/GRPCDelegateWrapper.h"
-#import "private/GRPCMethodName+HTTP2Encoding.h"
 #import "private/GRPCWrappedCall.h"
 #import "private/NSData+GRPC.h"
 #import "private/NSDictionary+GRPC.h"
@@ -90,14 +88,14 @@ NSString * const kGRPCStatusMetadataKey = @"io.grpc.StatusMetadataKey";
 @synthesize state = _state;
 
 - (instancetype)init {
-  return [self initWithHost:nil method:nil requestsWriter:nil];
+  return [self initWithHost:nil path:nil requestsWriter:nil];
 }
 
 // Designated initializer
 - (instancetype)initWithHost:(NSString *)host
-                      method:(GRPCMethodName *)method
+                        path:(NSString *)path
               requestsWriter:(id<GRXWriter>)requestWriter {
-  if (!host || !method) {
+  if (!host || !path) {
     [NSException raise:NSInvalidArgumentException format:@"Neither host nor method can be nil."];
   }
   if (requestWriter.state != GRXWriterStateNotStarted) {
@@ -114,7 +112,7 @@ NSString * const kGRPCStatusMetadataKey = @"io.grpc.StatusMetadataKey";
     _channel = [GRPCChannel channelToHost:host];
 
     _wrappedCall = [[GRPCWrappedCall alloc] initWithChannel:_channel
-                                                     method:method.HTTP2Path
+                                                       path:path
                                                        host:host];
 
     // Serial queue to invoke the non-reentrant methods of the grpc_call object.
diff --git a/src/objective-c/GRPCClient/private/GRPCMethodName+HTTP2Encoding.h b/src/objective-c/GRPCClient/private/GRPCMethodName+HTTP2Encoding.h
deleted file mode 100644
index 81c80f2a49..0000000000
--- a/src/objective-c/GRPCClient/private/GRPCMethodName+HTTP2Encoding.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- *
- * Copyright 2015, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#import <Foundation/Foundation.h>
-
-#import "GRPCClient/GRPCMethodName.h"
-
-@interface GRPCMethodName (HTTP2Encoding)
-- (NSString *)HTTP2Path;
-@end
diff --git a/src/objective-c/GRPCClient/private/GRPCMethodName+HTTP2Encoding.m b/src/objective-c/GRPCClient/private/GRPCMethodName+HTTP2Encoding.m
deleted file mode 100644
index 3ad757fb29..0000000000
--- a/src/objective-c/GRPCClient/private/GRPCMethodName+HTTP2Encoding.m
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- *
- * Copyright 2015, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-#import "GRPCMethodName+HTTP2Encoding.h"
-
-@implementation GRPCMethodName (HTTP2Encoding)
-- (NSString *)HTTP2Path {
-  if (self.package) {
-    return [NSString stringWithFormat:@"/%@.%@/%@", self.package, self.interface, self.method];
-  } else {
-    return [NSString stringWithFormat:@"/%@/%@", self.interface, self.method];
-  }
-}
-@end
diff --git a/src/objective-c/GRPCClient/private/GRPCWrappedCall.h b/src/objective-c/GRPCClient/private/GRPCWrappedCall.h
index c08aefc6a8..18f8bb5531 100644
--- a/src/objective-c/GRPCClient/private/GRPCWrappedCall.h
+++ b/src/objective-c/GRPCClient/private/GRPCWrappedCall.h
@@ -84,7 +84,7 @@
 @interface GRPCWrappedCall : NSObject
 
 - (instancetype)initWithChannel:(GRPCChannel *)channel
-                         method:(NSString *)method
+                           path:(NSString *)path
                            host:(NSString *)host NS_DESIGNATED_INITIALIZER;
 
 - (void)startBatchWithOperations:(NSArray *)ops errorHandler:(void(^)())errorHandler;
diff --git a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
index d94b25091e..45f10f5d63 100644
--- a/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
+++ b/src/objective-c/GRPCClient/private/GRPCWrappedCall.m
@@ -225,13 +225,13 @@
 }
 
 - (instancetype)init {
-  return [self initWithChannel:nil method:nil host:nil];
+  return [self initWithChannel:nil path:nil host:nil];
 }
 
 - (instancetype)initWithChannel:(GRPCChannel *)channel
-                         method:(NSString *)method
+                           path:(NSString *)path
                            host:(NSString *)host {
-  if (!channel || !method || !host) {
+  if (!channel || !path || !host) {
     [NSException raise:NSInvalidArgumentException
                 format:@"channel, method, and host cannot be nil."];
   }
@@ -247,7 +247,7 @@
       return nil;
     }
     _call = grpc_channel_create_call(channel.unmanagedChannel, _queue.unmanagedQueue,
-                                     method.UTF8String, host.UTF8String, gpr_inf_future);
+                                     path.UTF8String, host.UTF8String, gpr_inf_future);
     if (_call == NULL) {
       return nil;
     }
diff --git a/src/objective-c/GRPCClient/GRPCMethodName.h b/src/objective-c/ProtoRPC/ProtoMethod.h
index fe153dd478..8f554a0483 100644
--- a/src/objective-c/GRPCClient/GRPCMethodName.h
+++ b/src/objective-c/ProtoRPC/ProtoMethod.h
@@ -33,17 +33,16 @@
 
 #import <Foundation/Foundation.h>
 
-// See the README file for an introduction to this library.
-
-// A fully-qualified gRPC method name. Full qualification is needed because a gRPC endpoint can
-// implement multiple interfaces.
-// TODO(jcanizales): Move to ProtoRPC package.
-// TODO(jcanizales): Rename interface -> service.
-@interface GRPCMethodName : NSObject
+// A fully-qualified proto service method name. Full qualification is needed because a gRPC endpoint
+// can implement multiple services.
+@interface ProtoMethod : NSObject
 @property(nonatomic, readonly) NSString *package;
-@property(nonatomic, readonly) NSString *interface;
+@property(nonatomic, readonly) NSString *service;
 @property(nonatomic, readonly) NSString *method;
+
+@property(nonatomic, readonly) NSString *HTTPPath;
+
 - (instancetype)initWithPackage:(NSString *)package
-                      interface:(NSString *)interface
+                        service:(NSString *)service
                          method:(NSString *)method;
 @end
diff --git a/src/objective-c/GRPCClient/GRPCMethodName.m b/src/objective-c/ProtoRPC/ProtoMethod.m
index 96724073a5..1113b4fbaa 100644
--- a/src/objective-c/GRPCClient/GRPCMethodName.m
+++ b/src/objective-c/ProtoRPC/ProtoMethod.m
@@ -31,17 +31,25 @@
  *
  */
 
-#import "GRPCMethodName.h"
+#import "ProtoMethod.h"
 
-@implementation GRPCMethodName
+@implementation ProtoMethod
 - (instancetype)initWithPackage:(NSString *)package
-                      interface:(NSString *)interface
+                        service:(NSString *)service
                          method:(NSString *)method {
   if ((self = [super init])) {
     _package = [package copy];
-    _interface = [interface copy];
+    _service = [service copy];
     _method = [method copy];
   }
   return self;
 }
+
+- (NSString *)HTTPPath {
+  if (_package) {
+    return [NSString stringWithFormat:@"/%@.%@/%@", _package, _service, _method];
+  } else {
+    return [NSString stringWithFormat:@"/%@/%@", _service, _method];
+  }
+}
 @end
diff --git a/src/objective-c/ProtoRPC/ProtoRPC.h b/src/objective-c/ProtoRPC/ProtoRPC.h
index a383310619..fcc0a507fe 100644
--- a/src/objective-c/ProtoRPC/ProtoRPC.h
+++ b/src/objective-c/ProtoRPC/ProtoRPC.h
@@ -34,10 +34,12 @@
 #import <Foundation/Foundation.h>
 #import <GRPCClient/GRPCCall.h>
 
+#import "ProtoMethod.h"
+
 @interface ProtoRPC : GRPCCall
 
 - (instancetype)initWithHost:(NSString *)host
-                      method:(GRPCMethodName *)method
+                      method:(ProtoMethod *)method
               requestsWriter:(id<GRXWriter>)requestsWriter
                responseClass:(Class)responseClass
           responsesWriteable:(id<GRXWriteable>)responsesWriteable NS_DESIGNATED_INITIALIZER;
diff --git a/src/objective-c/ProtoRPC/ProtoRPC.m b/src/objective-c/ProtoRPC/ProtoRPC.m
index 4da646d7b4..fe3ccf0541 100644
--- a/src/objective-c/ProtoRPC/ProtoRPC.m
+++ b/src/objective-c/ProtoRPC/ProtoRPC.m
@@ -42,19 +42,20 @@
   id<GRXWriteable> _responseWriteable;
 }
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wobjc-designated-initializers"
 - (instancetype)initWithHost:(NSString *)host
-                      method:(GRPCMethodName *)method
+                        path:(NSString *)path
               requestsWriter:(id<GRXWriter>)requestsWriter {
-  return [self initWithHost:host
-                     method:method
-             requestsWriter:requestsWriter
-              responseClass:nil
-        responsesWriteable:nil];
+  [NSException raise:NSInvalidArgumentException
+              format:@"Please use ProtoRPC's designated initializer instead."];
+  return nil;
 }
+#pragma clang diagnostic pop
 
 // Designated initializer
 - (instancetype)initWithHost:(NSString *)host
-                      method:(GRPCMethodName *)method
+                      method:(ProtoMethod *)method
               requestsWriter:(id<GRXWriter>)requestsWriter
                responseClass:(Class)responseClass
           responsesWriteable:(id<GRXWriteable>)responsesWriteable {
@@ -70,7 +71,7 @@
         // sending GPBMessages.
         return [proto data];
       }];
-  if ((self = [super initWithHost:host method:method requestsWriter:bytesWriter])) {
+  if ((self = [super initWithHost:host path:method.HTTPPath requestsWriter:bytesWriter])) {
     // A writeable that parses the proto messages received.
     _responseWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
       [responsesWriteable writeValue:[responseClass parseFromData:value error:NULL]];
diff --git a/src/objective-c/ProtoRPC/ProtoService.m b/src/objective-c/ProtoRPC/ProtoService.m
index 47bdb5dc6e..d7c5b6a850 100644
--- a/src/objective-c/ProtoRPC/ProtoService.m
+++ b/src/objective-c/ProtoRPC/ProtoService.m
@@ -33,10 +33,10 @@
 
 #import "ProtoService.h"
 
-#import <GRPCClient/GRPCMethodName.h>
 #import <RxLibrary/GRXWriteable.h>
 #import <RxLibrary/GRXWriter.h>
 
+#import "ProtoMethod.h"
 #import "ProtoRPC.h"
 
 @implementation ProtoService {
@@ -69,9 +69,9 @@
            requestsWriter:(id<GRXWriter>)requestsWriter
             responseClass:(Class)responseClass
        responsesWriteable:(id<GRXWriteable>)responsesWriteable {
-  GRPCMethodName *methodName = [[GRPCMethodName alloc] initWithPackage:_packageName
-                                                             interface:_serviceName
-                                                                method:method];
+  ProtoMethod *methodName = [[ProtoMethod alloc] initWithPackage:_packageName
+                                                         service:_serviceName
+                                                          method:method];
   return [[ProtoRPC alloc] initWithHost:_host
                                  method:methodName
                          requestsWriter:requestsWriter
diff --git a/src/objective-c/tests/GRPCClientTests.m b/src/objective-c/tests/GRPCClientTests.m
index e421127ea1..f9c2d5d8d6 100644
--- a/src/objective-c/tests/GRPCClientTests.m
+++ b/src/objective-c/tests/GRPCClientTests.m
@@ -35,7 +35,7 @@
 #import <XCTest/XCTest.h>
 
 #import <GRPCClient/GRPCCall.h>
-#import <GRPCClient/GRPCMethodName.h>
+#import <ProtoRPC/ProtoMethod.h>
 #import <RemoteTest/Messages.pbobjc.h>
 #import <RxLibrary/GRXWriteable.h>
 #import <RxLibrary/GRXWriter+Immediate.h>
@@ -47,9 +47,9 @@ static NSString * const kHostAddress = @"grpc-test.sandbox.google.com";
 static NSString * const kPackage = @"grpc.testing";
 static NSString * const kService = @"TestService";
 
-static GRPCMethodName *kInexistentMethod;
-static GRPCMethodName *kEmptyCallMethod;
-static GRPCMethodName *kUnaryCallMethod;
+static ProtoMethod *kInexistentMethod;
+static ProtoMethod *kEmptyCallMethod;
+static ProtoMethod *kUnaryCallMethod;
 
 @interface GRPCClientTests : XCTestCase
 @end
@@ -58,22 +58,22 @@ static GRPCMethodName *kUnaryCallMethod;
 
 - (void)setUp {
   // This method isn't implemented by the remote server.
-  kInexistentMethod = [[GRPCMethodName alloc] initWithPackage:kPackage
-                                                    interface:kService
-                                                       method:@"Inexistent"];
-  kEmptyCallMethod = [[GRPCMethodName alloc] initWithPackage:kPackage
-                                                   interface:kService
-                                                      method:@"EmptyCall"];
-  kUnaryCallMethod = [[GRPCMethodName alloc] initWithPackage:kPackage
-                                                   interface:kService
-                                                      method:@"UnaryCall"];
+  kInexistentMethod = [[ProtoMethod alloc] initWithPackage:kPackage
+                                                   service:kService
+                                                    method:@"Inexistent"];
+  kEmptyCallMethod = [[ProtoMethod alloc] initWithPackage:kPackage
+                                                  service:kService
+                                                   method:@"EmptyCall"];
+  kUnaryCallMethod = [[ProtoMethod alloc] initWithPackage:kPackage
+                                                  service:kService
+                                                   method:@"UnaryCall"];
 }
 
 - (void)testConnectionToRemoteServer {
   __weak XCTestExpectation *expectation = [self expectationWithDescription:@"Server reachable."];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
-                                           method:kInexistentMethod
+                                             path:kInexistentMethod.HTTPPath
                                    requestsWriter:[GRXWriter writerWithValue:[NSData data]]];
 
   id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
@@ -95,7 +95,7 @@ static GRPCMethodName *kUnaryCallMethod;
   __weak XCTestExpectation *completion = [self expectationWithDescription:@"Empty RPC completed."];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
-                                           method:kEmptyCallMethod
+                                             path:kEmptyCallMethod.HTTPPath
                                    requestsWriter:[GRXWriter writerWithValue:[NSData data]]];
 
   id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
@@ -123,7 +123,7 @@ static GRPCMethodName *kUnaryCallMethod;
   id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[request data]];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
-                                           method:kUnaryCallMethod
+                                             path:kUnaryCallMethod.HTTPPath
                                    requestsWriter:requestsWriter];
 
   id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
@@ -153,7 +153,7 @@ static GRPCMethodName *kUnaryCallMethod;
   id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[request data]];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:kHostAddress
-                                           method:kUnaryCallMethod
+                                             path:kUnaryCallMethod.HTTPPath
                                    requestsWriter:requestsWriter];
 
   call.requestMetadata[@"Authorization"] = @"Bearer bogusToken";
diff --git a/src/objective-c/tests/LocalClearTextTests.m b/src/objective-c/tests/LocalClearTextTests.m
index 05cc10410a..10c9f13ea3 100644
--- a/src/objective-c/tests/LocalClearTextTests.m
+++ b/src/objective-c/tests/LocalClearTextTests.m
@@ -35,7 +35,7 @@
 #import <XCTest/XCTest.h>
 
 #import <GRPCClient/GRPCCall.h>
-#import <GRPCClient/GRPCMethodName.h>
+#import <ProtoRPC/ProtoMethod.h>
 #import <RouteGuide/RouteGuide.pbobjc.h>
 #import <RouteGuide/RouteGuide.pbrpc.h>
 #import <RxLibrary/GRXWriteable.h>
@@ -87,14 +87,14 @@ static NSString * const kService = @"RouteGuide";
   __weak XCTestExpectation *response = [self expectationWithDescription:@"Empty response received."];
   __weak XCTestExpectation *completion = [self expectationWithDescription:@"Empty RPC completed."];
 
-  GRPCMethodName *method = [[GRPCMethodName alloc] initWithPackage:kPackage
-                                                         interface:kService
-                                                            method:@"RecordRoute"];
+  ProtoMethod *method = [[ProtoMethod alloc] initWithPackage:kPackage
+                                                     service:kService
+                                                      method:@"RecordRoute"];
 
   id<GRXWriter> requestsWriter = [GRXWriter emptyWriter];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:kRouteGuideHost
-                                           method:method
+                                             path:method.HTTPPath
                                    requestsWriter:requestsWriter];
 
   id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {
@@ -115,9 +115,9 @@ static NSString * const kService = @"RouteGuide";
   __weak XCTestExpectation *response = [self expectationWithDescription:@"Response received."];
   __weak XCTestExpectation *completion = [self expectationWithDescription:@"RPC completed."];
 
-  GRPCMethodName *method = [[GRPCMethodName alloc] initWithPackage:kPackage
-                                                         interface:kService
-                                                            method:@"GetFeature"];
+  ProtoMethod *method = [[ProtoMethod alloc] initWithPackage:kPackage
+                                                     service:kService
+                                                      method:@"GetFeature"];
 
   RGDPoint *point = [RGDPoint message];
   point.latitude = 28E7;
@@ -125,7 +125,7 @@ static NSString * const kService = @"RouteGuide";
   id<GRXWriter> requestsWriter = [GRXWriter writerWithValue:[point data]];
 
   GRPCCall *call = [[GRPCCall alloc] initWithHost:kRouteGuideHost
-                                           method:method
+                                             path:method.HTTPPath
                                    requestsWriter:requestsWriter];
 
   id<GRXWriteable> responsesWriteable = [[GRXWriteable alloc] initWithValueHandler:^(NSData *value) {