Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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157 lines
4.9 KiB
157 lines
4.9 KiB
10 years ago
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// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <errno.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include "conformance.pb.h"
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using std::string;
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using conformance::ConformanceRequest;
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using conformance::ConformanceResponse;
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using conformance::TestAllTypes;
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int test_count = 0;
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bool verbose = false;
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bool CheckedRead(int fd, void *buf, size_t len) {
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size_t ofs = 0;
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while (len > 0) {
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ssize_t bytes_read = read(fd, (char*)buf + ofs, len);
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if (bytes_read == 0) return false;
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if (bytes_read < 0) {
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GOOGLE_LOG(FATAL) << "Error reading from test runner: " << strerror(errno);
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}
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len -= bytes_read;
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ofs += bytes_read;
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}
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return true;
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}
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void CheckedWrite(int fd, const void *buf, size_t len) {
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if (write(fd, buf, len) != len) {
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GOOGLE_LOG(FATAL) << "Error writing to test runner: " << strerror(errno);
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}
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}
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void DoTest(const ConformanceRequest& request, ConformanceResponse* response) {
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TestAllTypes test_message;
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switch (request.payload_case()) {
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case ConformanceRequest::kProtobufPayload:
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if (!test_message.ParseFromString(request.protobuf_payload())) {
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// Getting parse details would involve something like:
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// http://stackoverflow.com/questions/22121922/how-can-i-get-more-details-about-errors-generated-during-protobuf-parsing-c
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response->set_parse_error("Parse error (no more details available).");
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return;
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}
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break;
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case ConformanceRequest::kJsonPayload:
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response->set_runtime_error("JSON input is not yet supported.");
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break;
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case ConformanceRequest::PAYLOAD_NOT_SET:
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GOOGLE_LOG(FATAL) << "Request didn't have payload.";
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break;
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}
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switch (request.requested_output()) {
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case ConformanceRequest::UNSPECIFIED:
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GOOGLE_LOG(FATAL) << "Unspecified output format";
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break;
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case ConformanceRequest::PROTOBUF:
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test_message.SerializeToString(response->mutable_protobuf_payload());
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break;
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case ConformanceRequest::JSON:
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response->set_runtime_error("JSON output is not yet supported.");
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break;
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}
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}
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bool DoTestIo() {
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string serialized_input;
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string serialized_output;
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ConformanceRequest request;
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ConformanceResponse response;
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uint32_t bytes;
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if (!CheckedRead(STDIN_FILENO, &bytes, sizeof(uint32_t))) {
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// EOF.
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return false;
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}
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serialized_input.resize(bytes);
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if (!CheckedRead(STDIN_FILENO, (char*)serialized_input.c_str(), bytes)) {
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GOOGLE_LOG(ERROR) << "Unexpected EOF on stdin. " << strerror(errno);
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}
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if (!request.ParseFromString(serialized_input)) {
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GOOGLE_LOG(FATAL) << "Parse of ConformanceRequest proto failed.";
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return false;
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}
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DoTest(request, &response);
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response.SerializeToString(&serialized_output);
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bytes = serialized_output.size();
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CheckedWrite(STDOUT_FILENO, &bytes, sizeof(uint32_t));
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CheckedWrite(STDOUT_FILENO, serialized_output.c_str(), bytes);
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if (verbose) {
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fprintf(stderr, "conformance-cpp: request=%s, response=%s\n",
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request.ShortDebugString().c_str(),
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response.ShortDebugString().c_str());
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}
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test_count++;
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return true;
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}
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int main() {
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while (1) {
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if (!DoTestIo()) {
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fprintf(stderr, "conformance-cpp: received EOF from test runner "
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"after %d tests, exiting\n", test_count);
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return 0;
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}
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}
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}
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