The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#) https://grpc.io/
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/*
*
* Copyright 2017 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#import <XCTest/XCTest.h>
#include <sstream>
#include <grpc/grpc.h>
#include <grpc/support/time.h>
#include <grpcpp/channel.h>
#include <grpcpp/client_context.h>
#include <grpcpp/create_channel.h>
#include <grpcpp/generic/async_generic_service.h>
#include <grpcpp/generic/generic_stub.h>
#include <grpcpp/server.h>
#include <grpcpp/server_builder.h>
#include <grpcpp/server_context.h>
#include <grpcpp/support/slice.h>
#include "src/core/lib/gprpp/thd.h"
#include "test/core/test_util/port.h"
#include "test/core/test_util/test_config.h"
using std::chrono::system_clock;
using namespace grpc;
void* tag(int i) { return (void*)(intptr_t)i; }
static grpc_slice merge_slices(grpc_slice* slices, size_t nslices) {
size_t i;
size_t len = 0;
uint8_t* cursor;
grpc_slice out;
for (i = 0; i < nslices; i++) {
len += GRPC_SLICE_LENGTH(slices[i]);
}
out = grpc_slice_malloc(len);
cursor = GRPC_SLICE_START_PTR(out);
for (i = 0; i < nslices; i++) {
memcpy(cursor, GRPC_SLICE_START_PTR(slices[i]), GRPC_SLICE_LENGTH(slices[i]));
cursor += GRPC_SLICE_LENGTH(slices[i]);
}
return out;
}
int byte_buffer_eq_string(ByteBuffer* bb, const char* str) {
int res;
std::vector<Slice> slices;
bb->Dump(&slices);
grpc_slice* c_slices = new grpc_slice[slices.size()];
for (int i = 0; i < slices.size(); i++) {
c_slices[i] = slices[i].c_slice();
}
grpc_slice a = merge_slices(c_slices, slices.size());
grpc_slice b = grpc_slice_from_copied_string(str);
res = (GRPC_SLICE_LENGTH(a) == GRPC_SLICE_LENGTH(b)) &&
(0 == memcmp(GRPC_SLICE_START_PTR(a), GRPC_SLICE_START_PTR(b), GRPC_SLICE_LENGTH(a)));
grpc_slice_unref(a);
grpc_slice_unref(b);
for (int i = 0; i < slices.size(); i++) {
grpc_slice_unref(c_slices[i]);
}
delete[] c_slices;
return res;
}
@interface GenericTest : XCTestCase
@end
@implementation GenericTest {
std::string server_host_;
CompletionQueue cli_cq_;
std::unique_ptr<ServerCompletionQueue> srv_cq_;
std::unique_ptr<GenericStub> generic_stub_;
std::unique_ptr<Server> server_;
AsyncGenericService generic_service_;
std::ostringstream server_address_;
}
- (void)verify_ok:(grpc::CompletionQueue*)cq i:(int)i expect_ok:(bool)expect_ok {
bool ok;
void* got_tag;
XCTAssertTrue(cq->Next(&got_tag, &ok));
XCTAssertEqual(expect_ok, ok);
XCTAssertEqual(tag(i), got_tag);
}
- (void)server_ok:(int)i {
[self verify_ok:srv_cq_.get() i:i expect_ok:true];
}
- (void)client_ok:(int)i {
[self verify_ok:&cli_cq_ i:i expect_ok:true];
}
- (void)server_fail:(int)i {
[self verify_ok:srv_cq_.get() i:i expect_ok:false];
}
- (void)client_fail:(int)i {
[self verify_ok:&cli_cq_ i:i expect_ok:false];
}
- (void)setUp {
[super setUp];
server_host_ = "localhost";
int port = grpc_pick_unused_port_or_die();
server_address_ << server_host_ << ":" << port;
// Setup server
ServerBuilder builder;
builder.AddListeningPort(server_address_.str(), InsecureServerCredentials());
builder.RegisterAsyncGenericService(&generic_service_);
// Include a second call to RegisterAsyncGenericService to make sure that
// we get an error in the log, since it is not allowed to have 2 async
// generic services
builder.RegisterAsyncGenericService(&generic_service_);
srv_cq_ = builder.AddCompletionQueue();
server_ = builder.BuildAndStart();
}
- (void)tearDown {
// Put teardown code here. This method is called after the invocation of each test method in the
// class.
server_->Shutdown();
void* ignored_tag;
bool ignored_ok;
cli_cq_.Shutdown();
srv_cq_->Shutdown();
while (cli_cq_.Next(&ignored_tag, &ignored_ok))
;
while (srv_cq_->Next(&ignored_tag, &ignored_ok))
;
[super tearDown];
}
- (void)ResetStub {
std::shared_ptr<Channel> channel =
CreateChannel(server_address_.str(), InsecureChannelCredentials());
generic_stub_.reset(new GenericStub(channel));
}
- (void)SendRpc:(int)num_rpcs {
[self SendRpc:num_rpcs check_deadline:false deadline:gpr_inf_future(GPR_CLOCK_MONOTONIC)];
}
- (void)SendRpc:(int)num_rpcs check_deadline:(bool)check_deadline deadline:(gpr_timespec)deadline {
const std::string kMethodName("/grpc.cpp.test.util.EchoTestService/Echo");
for (int i = 0; i < num_rpcs; i++) {
Status recv_status;
ClientContext cli_ctx;
GenericServerContext srv_ctx;
GenericServerAsyncReaderWriter stream(&srv_ctx);
// The string needs to be long enough to test heap-based slice.
/*send_request.set_message("Hello world. Hello world. Hello world.");*/
if (check_deadline) {
cli_ctx.set_deadline(deadline);
}
std::unique_ptr<GenericClientAsyncReaderWriter> call =
generic_stub_->Call(&cli_ctx, kMethodName, &cli_cq_, tag(1));
[self client_ok:1];
Slice send_slice = Slice("hello world", 11);
std::unique_ptr<ByteBuffer> send_buffer =
std::unique_ptr<ByteBuffer>(new ByteBuffer(&send_slice, 1));
call->Write(*send_buffer, tag(2));
// Send ByteBuffer can be destroyed after calling Write.
send_buffer.reset();
[self client_ok:2];
call->WritesDone(tag(3));
[self client_ok:3];
generic_service_.RequestCall(&srv_ctx, &stream, srv_cq_.get(), srv_cq_.get(), tag(4));
[self verify_ok:srv_cq_.get() i:4 expect_ok:true];
XCTAssertEqual(server_host_, srv_ctx.host().substr(0, server_host_.length()));
XCTAssertEqual(kMethodName, srv_ctx.method());
if (check_deadline) {
XCTAssertTrue(gpr_time_similar(deadline, srv_ctx.raw_deadline(),
gpr_time_from_millis(1000, GPR_TIMESPAN)));
}
ByteBuffer recv_buffer;
stream.Read(&recv_buffer, tag(5));
[self server_ok:5];
XCTAssertTrue(byte_buffer_eq_string(&recv_buffer, "hello world"));
send_buffer = std::unique_ptr<ByteBuffer>(new ByteBuffer(recv_buffer));
stream.Write(*send_buffer, tag(6));
send_buffer.reset();
[self server_ok:6];
stream.Finish(Status::OK, tag(7));
[self server_ok:7];
recv_buffer.Clear();
call->Read(&recv_buffer, tag(8));
[self client_ok:8];
XCTAssertTrue(byte_buffer_eq_string(&recv_buffer, "hello world"));
call->Finish(&recv_status, tag(9));
[self client_ok:9];
XCTAssertTrue(recv_status.ok());
}
}
- (void)testSimpleRpc {
[self ResetStub];
[self SendRpc:1];
}
- (void)testSequentialRpcs {
[self ResetStub];
[self SendRpc:10];
}
+ (void)setUp {
grpc_test_init(NULL, NULL);
}
@end