352 lines
12 KiB
Java
352 lines
12 KiB
Java
// 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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import com.google.protobuf.ByteString;
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import com.google.protobuf.CodedInputStream;
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import com.google.protobuf.ExtensionRegistryLite;
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import com.google.protobuf.InvalidProtocolBufferException;
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import com.google.protobuf.MessageLite;
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import com.google.protobuf.Parser;
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import com.google.protobuf.conformance.Conformance;
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import com.google.protobuf_test_messages.proto2.TestMessagesProto2;
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import com.google.protobuf_test_messages.proto2.TestMessagesProto2.TestAllTypesProto2;
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import com.google.protobuf_test_messages.proto3.TestMessagesProto3;
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import com.google.protobuf_test_messages.proto3.TestMessagesProto3.TestAllTypesProto3;
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import java.nio.ByteBuffer;
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import java.util.ArrayList;
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class ConformanceJavaLite {
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private int testCount = 0;
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private boolean readFromStdin(byte[] buf, int len) throws Exception {
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int ofs = 0;
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while (len > 0) {
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int read = System.in.read(buf, ofs, len);
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if (read == -1) {
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return false; // EOF
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}
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ofs += read;
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len -= read;
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}
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return true;
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}
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private void writeToStdout(byte[] buf) throws Exception {
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System.out.write(buf);
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}
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// Returns -1 on EOF (the actual values will always be positive).
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private int readLittleEndianIntFromStdin() throws Exception {
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byte[] buf = new byte[4];
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if (!readFromStdin(buf, 4)) {
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return -1;
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}
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return (buf[0] & 0xff)
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| ((buf[1] & 0xff) << 8)
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| ((buf[2] & 0xff) << 16)
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| ((buf[3] & 0xff) << 24);
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}
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private void writeLittleEndianIntToStdout(int val) throws Exception {
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byte[] buf = new byte[4];
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buf[0] = (byte) val;
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buf[1] = (byte) (val >> 8);
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buf[2] = (byte) (val >> 16);
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buf[3] = (byte) (val >> 24);
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writeToStdout(buf);
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}
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private enum BinaryDecoderType {
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BTYE_STRING_DECODER,
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BYTE_ARRAY_DECODER,
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ARRAY_BYTE_BUFFER_DECODER,
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READONLY_ARRAY_BYTE_BUFFER_DECODER,
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DIRECT_BYTE_BUFFER_DECODER,
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READONLY_DIRECT_BYTE_BUFFER_DECODER,
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INPUT_STREAM_DECODER;
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}
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private static class BinaryDecoder<T extends MessageLite> {
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public T decode(
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ByteString bytes,
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BinaryDecoderType type,
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Parser<T> parser,
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ExtensionRegistryLite extensions)
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throws InvalidProtocolBufferException {
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switch (type) {
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case BTYE_STRING_DECODER:
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case BYTE_ARRAY_DECODER:
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return parser.parseFrom(bytes, extensions);
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case ARRAY_BYTE_BUFFER_DECODER:
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{
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ByteBuffer buffer = ByteBuffer.allocate(bytes.size());
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bytes.copyTo(buffer);
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buffer.flip();
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return parser.parseFrom(CodedInputStream.newInstance(buffer), extensions);
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}
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case READONLY_ARRAY_BYTE_BUFFER_DECODER:
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{
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return parser.parseFrom(
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CodedInputStream.newInstance(bytes.asReadOnlyByteBuffer()), extensions);
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}
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case DIRECT_BYTE_BUFFER_DECODER:
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{
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ByteBuffer buffer = ByteBuffer.allocateDirect(bytes.size());
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bytes.copyTo(buffer);
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buffer.flip();
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return parser.parseFrom(CodedInputStream.newInstance(buffer), extensions);
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}
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case READONLY_DIRECT_BYTE_BUFFER_DECODER:
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{
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ByteBuffer buffer = ByteBuffer.allocateDirect(bytes.size());
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bytes.copyTo(buffer);
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buffer.flip();
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return parser.parseFrom(
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CodedInputStream.newInstance(buffer.asReadOnlyBuffer()), extensions);
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}
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case INPUT_STREAM_DECODER:
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{
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return parser.parseFrom(bytes.newInput(), extensions);
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}
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}
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return null;
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}
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}
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private <T extends MessageLite> T parseBinary(
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ByteString bytes, Parser<T> parser, ExtensionRegistryLite extensions)
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throws InvalidProtocolBufferException {
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ArrayList<T> messages = new ArrayList<>();
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ArrayList<InvalidProtocolBufferException> exceptions = new ArrayList<>();
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for (int i = 0; i < BinaryDecoderType.values().length; i++) {
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messages.add(null);
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exceptions.add(null);
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}
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if (messages.isEmpty()) {
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throw new RuntimeException("binary decoder types missing");
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}
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BinaryDecoder<T> decoder = new BinaryDecoder<>();
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boolean hasMessage = false;
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boolean hasException = false;
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for (int i = 0; i < BinaryDecoderType.values().length; ++i) {
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try {
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messages.set(i, decoder.decode(bytes, BinaryDecoderType.values()[i], parser, extensions));
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hasMessage = true;
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} catch (InvalidProtocolBufferException e) {
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exceptions.set(i, e);
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hasException = true;
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}
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}
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if (hasMessage && hasException) {
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StringBuilder sb =
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new StringBuilder("Binary decoders disagreed on whether the payload was valid.\n");
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for (int i = 0; i < BinaryDecoderType.values().length; ++i) {
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sb.append(BinaryDecoderType.values()[i].name());
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if (messages.get(i) != null) {
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sb.append(" accepted the payload.\n");
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} else {
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sb.append(" rejected the payload.\n");
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}
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}
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throw new RuntimeException(sb.toString());
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}
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if (hasException) {
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// We do not check if exceptions are equal. Different implementations may return different
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// exception messages. Throw an arbitrary one out instead.
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InvalidProtocolBufferException exception = null;
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for (InvalidProtocolBufferException e : exceptions) {
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if (exception != null) {
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exception.addSuppressed(e);
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} else {
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exception = e;
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}
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}
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throw exception;
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}
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// Fast path comparing all the messages with the first message, assuming equality being
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// symmetric and transitive.
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boolean allEqual = true;
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for (int i = 1; i < messages.size(); ++i) {
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if (!messages.get(0).equals(messages.get(i))) {
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allEqual = false;
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break;
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}
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}
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// Slow path: compare and find out all unequal pairs.
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if (!allEqual) {
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < messages.size() - 1; ++i) {
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for (int j = i + 1; j < messages.size(); ++j) {
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if (!messages.get(i).equals(messages.get(j))) {
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sb.append(BinaryDecoderType.values()[i].name())
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.append(" and ")
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.append(BinaryDecoderType.values()[j].name())
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.append(" parsed the payload differently.\n");
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}
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}
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}
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throw new RuntimeException(sb.toString());
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}
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return messages.get(0);
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}
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private Conformance.ConformanceResponse doTest(Conformance.ConformanceRequest request) {
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com.google.protobuf.MessageLite testMessage;
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boolean isProto3 =
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request.getMessageType().equals("protobuf_test_messages.proto3.TestAllTypesProto3");
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boolean isProto2 =
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request.getMessageType().equals("protobuf_test_messages.proto2.TestAllTypesProto2");
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switch (request.getPayloadCase()) {
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case PROTOBUF_PAYLOAD:
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{
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if (isProto3) {
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try {
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ExtensionRegistryLite extensions = ExtensionRegistryLite.newInstance();
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TestMessagesProto3.registerAllExtensions(extensions);
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testMessage =
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parseBinary(
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request.getProtobufPayload(), TestAllTypesProto3.parser(), extensions);
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} catch (InvalidProtocolBufferException e) {
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return Conformance.ConformanceResponse.newBuilder()
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.setParseError(e.getMessage())
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.build();
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}
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} else if (isProto2) {
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try {
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ExtensionRegistryLite extensions = ExtensionRegistryLite.newInstance();
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TestMessagesProto2.registerAllExtensions(extensions);
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testMessage =
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parseBinary(
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request.getProtobufPayload(), TestAllTypesProto2.parser(), extensions);
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} catch (InvalidProtocolBufferException e) {
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return Conformance.ConformanceResponse.newBuilder()
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.setParseError(e.getMessage())
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.build();
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}
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} else {
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throw new RuntimeException("Protobuf request doesn't have specific payload type.");
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}
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break;
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}
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case JSON_PAYLOAD:
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{
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return Conformance.ConformanceResponse.newBuilder()
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.setSkipped("Lite runtime does not support JSON format.")
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.build();
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}
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case TEXT_PAYLOAD:
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{
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return Conformance.ConformanceResponse.newBuilder()
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.setSkipped("Lite runtime does not support Text format.")
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.build();
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}
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case PAYLOAD_NOT_SET:
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{
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throw new RuntimeException("Request didn't have payload.");
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}
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default:
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{
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throw new RuntimeException("Unexpected payload case.");
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}
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}
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switch (request.getRequestedOutputFormat()) {
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case UNSPECIFIED:
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throw new RuntimeException("Unspecified output format.");
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case PROTOBUF:
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return Conformance.ConformanceResponse.newBuilder()
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.setProtobufPayload(testMessage.toByteString())
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.build();
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case JSON:
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return Conformance.ConformanceResponse.newBuilder()
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.setSkipped("Lite runtime does not support JSON format.")
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.build();
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case TEXT_FORMAT:
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return Conformance.ConformanceResponse.newBuilder()
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.setSkipped("Lite runtime does not support Text format.")
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.build();
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default:
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{
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throw new RuntimeException("Unexpected request output.");
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}
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}
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}
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private boolean doTestIo() throws Exception {
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int bytes = readLittleEndianIntFromStdin();
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if (bytes == -1) {
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return false; // EOF
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}
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byte[] serializedInput = new byte[bytes];
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if (!readFromStdin(serializedInput, bytes)) {
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throw new RuntimeException("Unexpected EOF from test program.");
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}
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Conformance.ConformanceRequest request =
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Conformance.ConformanceRequest.parseFrom(serializedInput);
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Conformance.ConformanceResponse response = doTest(request);
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byte[] serializedOutput = response.toByteArray();
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writeLittleEndianIntToStdout(serializedOutput.length);
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writeToStdout(serializedOutput);
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return true;
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}
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public void run() throws Exception {
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while (doTestIo()) {
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this.testCount++;
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}
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System.err.println(
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"ConformanceJavaLite: received EOF from test runner after " + this.testCount + " tests");
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}
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public static void main(String[] args) throws Exception {
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new ConformanceJavaLite().run();
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}
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}
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