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/*
*
* 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.
*
*/
/*
A command line tool to talk to any grpc server.
Example of talking to grpc interop server:
1. Prepare request binary file:
a. create a text file input.txt, containing the following:
response_size: 10
payload: {
body: "hello world"
}
b. under grpc/ run
protoc --proto_path=test/cpp/interop/ \
--encode=grpc.testing.SimpleRequest test/cpp/interop/messages.proto \
< input.txt > input.bin
2. Start a server
make interop_server && bins/opt/interop_server --port=50051
3. Run the tool
make grpc_cli && bins/opt/grpc_cli call localhost:50051 \
/grpc.testing.TestService/UnaryCall --enable_ssl=false \
--input_binary_file=input.bin --output_binary_file=output.bin
4. Decode response
protoc --proto_path=test/cpp/interop/ \
--decode=grpc.testing.SimpleResponse test/cpp/interop/messages.proto \
< output.bin > output.txt
5. Now the text form of response should be in output.txt
*/
#include <fstream>
#include <iostream>
#include <sstream>
#include <gflags/gflags.h>
#include "test/cpp/util/cli_call.h"
#include <grpc++/channel_arguments.h>
#include <grpc++/channel_interface.h>
#include <grpc++/create_channel.h>
#include <grpc++/credentials.h>
#include <grpc/grpc.h>
// In some distros, gflags is in the namespace google, and in some others,
// in gflags. This hack is enabling us to find both.
namespace google {}
namespace gflags {}
using namespace google;
using namespace gflags;
DEFINE_bool(enable_ssl, true, "Whether to use ssl/tls.");
DEFINE_bool(use_auth, false, "Whether to create default google credentials.");
DEFINE_string(input_binary_file, "",
"Path to input file containing serialized request.");
DEFINE_string(output_binary_file, "output.bin",
"Path to output file to write serialized response.");
int main(int argc, char** argv) {
grpc_init();
ParseCommandLineFlags(&argc, &argv, true);
if (argc < 4 || grpc::string(argv[1]) != "call") {
std::cout << "Usage: grpc_cli call server_host:port full_method_string\n"
<< "Example: grpc_cli call service.googleapis.com "
<< "/grpc.testing.TestService/UnaryCall "
<< "--input_binary_file=input.bin --output_binary_file=output.bin"
<< std::endl;
}
grpc::string server_address(argv[2]);
// TODO(yangg) basic check of method string
grpc::string method(argv[3]);
if (FLAGS_input_binary_file.empty()) {
std::cout << "Missing --input_binary_file for serialized request."
<< std::endl;
return 1;
}
std::cout << "connecting to " << server_address << std::endl;
std::ifstream input_file(FLAGS_input_binary_file,
std::ios::in | std::ios::binary);
std::stringstream input_stream;
input_stream << input_file.rdbuf();
std::unique_ptr<grpc::Credentials> creds;
if (!FLAGS_enable_ssl) {
creds = grpc::InsecureCredentials();
} else {
if (FLAGS_use_auth) {
creds = grpc::GoogleDefaultCredentials();
} else {
creds = grpc::SslCredentials(grpc::SslCredentialsOptions());
}
}
std::shared_ptr<grpc::ChannelInterface> channel =
grpc::CreateChannel(server_address, creds, grpc::ChannelArguments());
grpc::string response;
grpc::testing::CliCall::Call(channel, method, input_stream.str(), &response);
if (!response.empty()) {
std::ofstream output_file(FLAGS_output_binary_file,
std::ios::trunc | std::ios::binary);
output_file << response;
}
channel.reset();
grpc_shutdown();
return 0;
}
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