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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 a grpc server.
Example of talking to grpc interop server:
grpc_cli call localhost:50051 UnaryCall src/proto/grpc/testing/test.proto \
"response_size:10" --enable_ssl=false
Options:
1. --proto_path, if your proto file is not under current working directory,
use this flag to provide a search root. It should work similar to the
counterpart in protoc.
2. --metadata specifies metadata to be sent to the server, such as:
--metadata="MyHeaderKey1:Value1:MyHeaderKey2:Value2"
3. --enable_ssl, whether to use tls.
4. --use_auth, if set to true, attach a GoogleDefaultCredentials to the call
3. --input_binary_file, a file containing the serialized request. The file
can be generated by calling something like:
protoc --proto_path=src/proto/grpc/testing/ \
--encode=grpc.testing.SimpleRequest \
src/proto/grpc/testing/messages.proto \
< input.txt > input.bin
If this is used and no proto file is provided in the argument list, the
method string has to be exact in the form of /package.service/method.
4. --output_binary_file, a file to write binary format response into, it can
be later decoded using protoc:
protoc --proto_path=src/proto/grpc/testing/ \
--decode=grpc.testing.SimpleResponse \
src/proto/grpc/testing/messages.proto \
< output.bin > output.txt
*/
#include <fstream>
#include <iostream>
#include <sstream>
#include <gflags/gflags.h>
#include <grpc++/channel.h>
#include <grpc++/create_channel.h>
#include <grpc++/security/credentials.h>
#include <grpc++/support/string_ref.h>
#include <grpc/grpc.h>
#include "test/cpp/util/cli_call.h"
#include "test/cpp/util/proto_file_parser.h"
#include "test/cpp/util/string_ref_helper.h"
#include "test/cpp/util/test_config.h"
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, "",
"Path to output file to write serialized response.");
DEFINE_string(metadata, "",
"Metadata to send to server, in the form of key1:val1:key2:val2");
DEFINE_string(proto_path, ".", "Path to look for the proto file.");
void ParseMetadataFlag(
std::multimap<grpc::string, grpc::string>* client_metadata) {
if (FLAGS_metadata.empty()) {
return;
}
std::vector<grpc::string> fields;
const char* delim = ":";
size_t cur, next = -1;
do {
cur = next + 1;
next = FLAGS_metadata.find_first_of(delim, cur);
fields.push_back(FLAGS_metadata.substr(cur, next - cur));
} while (next != grpc::string::npos);
if (fields.size() % 2) {
std::cout << "Failed to parse metadata flag" << std::endl;
exit(1);
}
for (size_t i = 0; i < fields.size(); i += 2) {
client_metadata->insert(
std::pair<grpc::string, grpc::string>(fields[i], fields[i + 1]));
}
}
template <typename T>
void PrintMetadata(const T& m, const grpc::string& message) {
if (m.empty()) {
return;
}
std::cout << message << std::endl;
grpc::string pair;
for (typename T::const_iterator iter = m.begin(); iter != m.end(); ++iter) {
pair.clear();
pair.append(iter->first.data(), iter->first.size());
pair.append(" : ");
pair.append(iter->second.data(), iter->second.size());
std::cout << pair << std::endl;
}
}
int main(int argc, char** argv) {
grpc::testing::InitTest(&argc, &argv, true);
if (argc < 4 || argc == 5 || grpc::string(argv[1]) != "call") {
std::cout << "Usage: grpc_cli call server_host:port method_name "
<< "[proto file] [text format request] [<options>]" << std::endl;
}
grpc::string file_name;
grpc::string request_text;
grpc::string server_address(argv[2]);
grpc::string method_name(argv[3]);
std::unique_ptr<grpc::testing::ProtoFileParser> parser;
grpc::string serialized_request_proto;
if (argc == 6) {
file_name = argv[4];
// TODO(yangg) read from stdin as well?
request_text = argv[5];
}
if (request_text.empty() && FLAGS_input_binary_file.empty()) {
std::cout << "Missing input. Use text format input or "
<< "--input_binary_file for serialized request" << std::endl;
return 1;
} else if (!request_text.empty()) {
parser.reset(new grpc::testing::ProtoFileParser(FLAGS_proto_path, file_name,
method_name));
method_name = parser->GetFullMethodName();
if (parser->HasError()) {
return 1;
}
}
if (parser) {
serialized_request_proto =
parser->GetSerializedProto(request_text, true /* is_request */);
if (parser->HasError()) {
return 1;
}
} else if (!FLAGS_input_binary_file.empty()) {
std::ifstream input_file(FLAGS_input_binary_file,
std::ios::in | std::ios::binary);
std::stringstream input_stream;
input_stream << input_file.rdbuf();
serialized_request_proto = input_stream.str();
}
std::cout << "connecting to " << server_address << std::endl;
std::shared_ptr<grpc::ChannelCredentials> creds;
if (!FLAGS_enable_ssl) {
creds = grpc::InsecureChannelCredentials();
} else {
if (FLAGS_use_auth) {
creds = grpc::GoogleDefaultCredentials();
} else {
creds = grpc::SslCredentials(grpc::SslCredentialsOptions());
}
}
std::shared_ptr<grpc::Channel> channel =
grpc::CreateChannel(server_address, creds);
grpc::string serialized_response_proto;
std::multimap<grpc::string, grpc::string> client_metadata;
std::multimap<grpc::string_ref, grpc::string_ref> server_initial_metadata,
server_trailing_metadata;
ParseMetadataFlag(&client_metadata);
PrintMetadata(client_metadata, "Sending client initial metadata:");
grpc::Status s = grpc::testing::CliCall::Call(
channel, method_name, serialized_request_proto,
&serialized_response_proto, client_metadata, &server_initial_metadata,
&server_trailing_metadata);
PrintMetadata(server_initial_metadata,
"Received initial metadata from server:");
PrintMetadata(server_trailing_metadata,
"Received trailing metadata from server:");
if (s.ok()) {
std::cout << "Rpc succeeded with OK status" << std::endl;
if (parser) {
grpc::string response_text = parser->GetTextFormat(
serialized_response_proto, false /* is_request */);
if (parser->HasError()) {
return 1;
}
std::cout << "Response: \n " << response_text << std::endl;
}
if (!FLAGS_output_binary_file.empty()) {
std::ofstream output_file(FLAGS_output_binary_file,
std::ios::trunc | std::ios::binary);
output_file << serialized_response_proto;
}
} else {
std::cout << "Rpc failed with status code " << s.error_code()
<< " error message " << s.error_message() << std::endl;
}
return 0;
}
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