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/*
*
* Copyright 2016, 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.
*
*/
#include "test/cpp/util/proto_file_parser.h"
#include <algorithm>
#include <iostream>
#include <sstream>
#include <google/protobuf/text_format.h>
#include <grpc++/support/config.h>
namespace grpc {
namespace testing {
namespace {
// Match the user input method string to the full_name from method descriptor.
bool MethodNameMatch(const grpc::string& full_name, const grpc::string& input) {
grpc::string clean_input = input;
std::replace(clean_input.begin(), clean_input.end(), '/', '.');
if (clean_input.size() > full_name.size()) {
return false;
}
return full_name.compare(full_name.size() - clean_input.size(),
clean_input.size(), clean_input) == 0;
}
} // namespace
class ErrorPrinter
: public google::protobuf::compiler::MultiFileErrorCollector {
public:
explicit ErrorPrinter(ProtoFileParser* parser) : parser_(parser) {}
void AddError(const grpc::string& filename, int line, int column,
const grpc::string& message) GRPC_OVERRIDE {
std::ostringstream oss;
oss << "error " << filename << " " << line << " " << column << " "
<< message << "\n";
parser_->LogError(oss.str());
}
void AddWarning(const grpc::string& filename, int line, int column,
const grpc::string& message) GRPC_OVERRIDE {
std::cout << "warning " << filename << " " << line << " " << column << " "
<< message << std::endl;
}
private:
ProtoFileParser* parser_; // not owned
};
ProtoFileParser::ProtoFileParser(const grpc::string& proto_path,
const grpc::string& file_name,
const grpc::string& method)
: has_error_(false) {
source_tree_.MapPath("", proto_path);
error_printer_.reset(new ErrorPrinter(this));
importer_.reset(new google::protobuf::compiler::Importer(
&source_tree_, error_printer_.get()));
const auto* file_desc = importer_->Import(file_name);
if (!file_desc) {
LogError("");
return;
}
dynamic_factory_.reset(
new google::protobuf::DynamicMessageFactory(importer_->pool()));
std::vector<const google::protobuf::ServiceDescriptor*> service_desc_list;
for (int i = 0; i < file_desc->service_count(); i++) {
service_desc_list.push_back(file_desc->service(i));
}
InitProtoFileParser(method, service_desc_list);
}
ProtoFileParser::ProtoFileParser(std::shared_ptr<grpc::Channel> channel,
const grpc::string& method)
: has_error_(false),
desc_db_(new grpc::ProtoReflectionDescriptorDatabase(channel)),
desc_pool_(new google::protobuf::DescriptorPool(desc_db_.get())) {
std::vector<std::string> service_list;
if (!desc_db_->GetServices(&service_list)) {
LogError(
"Failed to get services from the server, "
"it may not have the reflection service.\n"
"Please try to use the --protofiles option to provide a proto file.");
}
if (has_error_) {
return;
}
dynamic_factory_.reset(
new google::protobuf::DynamicMessageFactory(desc_pool_.get()));
std::vector<const google::protobuf::ServiceDescriptor*> service_desc_list;
for (auto it = service_list.begin(); it != service_list.end(); it++) {
service_desc_list.push_back(desc_pool_->FindServiceByName(*it));
}
InitProtoFileParser(method, service_desc_list);
}
ProtoFileParser::~ProtoFileParser() {}
void ProtoFileParser::InitProtoFileParser(
const grpc::string& method,
const std::vector<const google::protobuf::ServiceDescriptor*>
service_desc_list) {
const google::protobuf::MethodDescriptor* method_descriptor = nullptr;
for (auto it = service_desc_list.begin(); it != service_desc_list.end();
it++) {
const auto* service_desc = *it;
for (int j = 0; j < service_desc->method_count(); j++) {
const auto* method_desc = service_desc->method(j);
if (MethodNameMatch(method_desc->full_name(), method)) {
if (method_descriptor) {
std::ostringstream error_stream("Ambiguous method names: ");
error_stream << method_descriptor->full_name() << " ";
error_stream << method_desc->full_name();
LogError(error_stream.str());
}
method_descriptor = method_desc;
}
}
}
if (!method_descriptor) {
LogError("Method name not found");
}
if (has_error_) {
return;
}
full_method_name_ = method_descriptor->full_name();
size_t last_dot = full_method_name_.find_last_of('.');
if (last_dot != grpc::string::npos) {
full_method_name_[last_dot] = '/';
}
full_method_name_.insert(full_method_name_.begin(), '/');
request_prototype_.reset(
dynamic_factory_->GetPrototype(method_descriptor->input_type())->New());
response_prototype_.reset(
dynamic_factory_->GetPrototype(method_descriptor->output_type())->New());
}
grpc::string ProtoFileParser::GetSerializedProto(
const grpc::string& text_format_proto, bool is_request) {
grpc::string serialized;
grpc::protobuf::Message* msg =
is_request ? request_prototype_.get() : response_prototype_.get();
bool ok =
google::protobuf::TextFormat::ParseFromString(text_format_proto, msg);
if (!ok) {
LogError("Failed to parse text format to proto.");
return "";
}
ok = msg->SerializeToString(&serialized);
if (!ok) {
LogError("Failed to serialize proto.");
return "";
}
return serialized;
}
grpc::string ProtoFileParser::GetTextFormat(
const grpc::string& serialized_proto, bool is_request) {
grpc::protobuf::Message* msg =
is_request ? request_prototype_.get() : response_prototype_.get();
if (!msg->ParseFromString(serialized_proto)) {
LogError("Failed to deserialize proto.");
return "";
}
grpc::string text_format;
if (!google::protobuf::TextFormat::PrintToString(*msg, &text_format)) {
LogError("Failed to print proto message to text format");
return "";
}
return text_format;
}
void ProtoFileParser::LogError(const grpc::string& error_msg) {
if (!error_msg.empty()) {
std::cout << error_msg << std::endl;
}
has_error_ = true;
}
} // namespace testing
} // namespace grpc
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