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// Copyright (c) 2014 Baidu, Inc.
//
// 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.
// A server to receive HttpRequest and send back HttpResponse.
#include <gflags/gflags.h>
#include <butil/logging.h>
#include <brpc/server.h>
#include <brpc/restful.h>
#include "http.pb.h"
DEFINE_int32(port, 8010, "TCP Port of this server");
DEFINE_int32(idle_timeout_s, -1, "Connection will be closed if there is no "
"read/write operations during the last `idle_timeout_s'");
DEFINE_int32(logoff_ms, 2000, "Maximum duration of server's LOGOFF state "
"(waiting for client to close connection before server stops)");
DEFINE_string(certificate, "cert.pem", "Certificate file path to enable SSL");
DEFINE_string(private_key, "key.pem", "Private key file path to enable SSL");
DEFINE_string(ciphers, "", "Cipher suite used for SSL connections");
namespace example {
// Service with static path.
class HttpServiceImpl : public HttpService {
public:
HttpServiceImpl() {};
virtual ~HttpServiceImpl() {};
void Echo(google::protobuf::RpcController* cntl_base,
const HttpRequest*,
HttpResponse*,
google::protobuf::Closure* done) {
// This object helps you to call done->Run() in RAII style. If you need
// to process the request asynchronously, pass done_guard.release().
brpc::ClosureGuard done_guard(done);
brpc::Controller* cntl =
static_cast<brpc::Controller*>(cntl_base);
// Fill response.
cntl->http_response().set_content_type("text/plain");
butil::IOBufBuilder os;
os << "queries:";
for (brpc::URI::QueryIterator it = cntl->http_request().uri().QueryBegin();
it != cntl->http_request().uri().QueryEnd(); ++it) {
os << ' ' << it->first << '=' << it->second;
}
os << "\nbody: " << cntl->request_attachment() << '\n';
os.move_to(cntl->response_attachment());
}
void EchoProtobuf(google::protobuf::RpcController*,
const HttpRequest* request,
HttpResponse* response,
google::protobuf::Closure* done) {
// This object helps you to call done->Run() in RAII style. If you need
// to process the request asynchronously, pass done_guard.release().
brpc::ClosureGuard done_guard(done);
response->set_message(request->message());
}
};
// Service with dynamic path.
class FileServiceImpl : public FileService {
public:
FileServiceImpl() {};
virtual ~FileServiceImpl() {};
static void* SendLargeFile(void* arg) {
butil::intrusive_ptr<brpc::ProgressiveAttachment> pa(
(brpc::ProgressiveAttachment*)arg);
if (pa == NULL) {
LOG(ERROR) << "ProgressiveAttachment is NULL";
return NULL;
}
for (int i = 0; i < 100; ++i) {
char buf[16];
int len = snprintf(buf, sizeof(buf), "part_%d ", i);
pa->Write(buf, len);
// sleep a while to send another part.
bthread_usleep(10000);
}
return NULL;
}
void default_method(google::protobuf::RpcController* cntl_base,
const HttpRequest*,
HttpResponse*,
google::protobuf::Closure* done) {
brpc::ClosureGuard done_guard(done);
brpc::Controller* cntl =
static_cast<brpc::Controller*>(cntl_base);
const std::string& filename = cntl->http_request().unresolved_path();
if (filename == "largefile") {
// Send the "largefile" with ProgressiveAttachment.
bthread_t th;
bthread_start_background(&th, NULL, SendLargeFile,
cntl->CreateProgressiveAttachment());
} else {
cntl->response_attachment().append("Getting file: ");
cntl->response_attachment().append(filename);
}
}
};
// Restful service. (The service implementation is exactly same with regular
// services, the difference is that you need to pass a `restful_mappings'
// when adding the service into server).
class QueueServiceImpl : public example::QueueService {
public:
QueueServiceImpl() {};
virtual ~QueueServiceImpl() {};
void start(google::protobuf::RpcController* cntl_base,
const HttpRequest*,
HttpResponse*,
google::protobuf::Closure* done) {
brpc::ClosureGuard done_guard(done);
brpc::Controller* cntl =
static_cast<brpc::Controller*>(cntl_base);
cntl->response_attachment().append("queue started");
}
void stop(google::protobuf::RpcController* cntl_base,
const HttpRequest*,
HttpResponse*,
google::protobuf::Closure* done) {
brpc::ClosureGuard done_guard(done);
brpc::Controller* cntl =
static_cast<brpc::Controller*>(cntl_base);
cntl->response_attachment().append("queue stopped");
}
void getstats(google::protobuf::RpcController* cntl_base,
const HttpRequest*,
HttpResponse*,
google::protobuf::Closure* done) {
brpc::ClosureGuard done_guard(done);
brpc::Controller* cntl =
static_cast<brpc::Controller*>(cntl_base);
const std::string& unresolved_path = cntl->http_request().unresolved_path();
if (unresolved_path.empty()) {
cntl->response_attachment().append("Require a name after /stats");
} else {
cntl->response_attachment().append("Get stats: ");
cntl->response_attachment().append(unresolved_path);
}
}
};
} // namespace example
int main(int argc, char* argv[]) {
// Parse gflags. We recommend you to use gflags as well.
GFLAGS_NS::ParseCommandLineFlags(&argc, &argv, true);
// Generally you only need one Server.
brpc::Server server;
example::HttpServiceImpl http_svc;
example::FileServiceImpl file_svc;
example::QueueServiceImpl queue_svc;
// Add services into server. Notice the second parameter, because the
// service is put on stack, we don't want server to delete it, otherwise
// use brpc::SERVER_OWNS_SERVICE.
if (server.AddService(&http_svc,
brpc::SERVER_DOESNT_OWN_SERVICE) != 0) {
LOG(ERROR) << "Fail to add http_svc";
return -1;
}
if (server.AddService(&file_svc,
brpc::SERVER_DOESNT_OWN_SERVICE) != 0) {
LOG(ERROR) << "Fail to add file_svc";
return -1;
}
if (server.AddService(&queue_svc,
brpc::SERVER_DOESNT_OWN_SERVICE,
"/v1/queue/start => start,"
"/v1/queue/stop => stop,"
"/v1/queue/stats/* => getstats") != 0) {
LOG(ERROR) << "Fail to add queue_svc";
return -1;
}
// Start the server.
brpc::ServerOptions options;
options.idle_timeout_sec = FLAGS_idle_timeout_s;
options.ssl_options.default_cert.certificate = FLAGS_certificate;
options.ssl_options.default_cert.private_key = FLAGS_private_key;
options.ssl_options.ciphers = FLAGS_ciphers;
if (server.Start(FLAGS_port, &options) != 0) {
LOG(ERROR) << "Fail to start HttpServer";
return -1;
}
// Wait until Ctrl-C is pressed, then Stop() and Join() the server.
server.RunUntilAskedToQuit();
return 0;
}