@Test
public void shouldDecodeSeparatedValues() {
String msgBody = "Not found";
channel = new EmbeddedChannel(new BinaryMemcacheResponseDecoder());
channel.writeInbound(Unpooled.buffer().writeBytes(GET_RESPONSE_CHUNK_1));
channel.writeInbound(Unpooled.buffer().writeBytes(GET_RESPONSE_CHUNK_2));
// First message
BinaryMemcacheResponse response = (BinaryMemcacheResponse) channel.readInbound();
assertThat(response.getHeader().getStatus(), is(BinaryMemcacheResponseStatus.KEY_ENOENT));
assertThat(response.getHeader().getTotalBodyLength(), is(msgBody.length()));
response.release();
// First message first content chunk
MemcacheContent content = (MemcacheContent) channel.readInbound();
assertThat(content, instanceOf(LastMemcacheContent.class));
assertThat(content.content().toString(CharsetUtil.UTF_8), is(msgBody));
content.release();
// Second message
response = (BinaryMemcacheResponse) channel.readInbound();
assertThat(response.getHeader().getStatus(), is(BinaryMemcacheResponseStatus.KEY_ENOENT));
assertThat(response.getHeader().getTotalBodyLength(), is(msgBody.length()));
response.release();
// Second message first content chunk
content = (MemcacheContent) channel.readInbound();
assertThat(content, instanceOf(MemcacheContent.class));
assertThat(content.content().toString(CharsetUtil.UTF_8), is(msgBody.substring(0, 7)));
content.release();
// Second message second content chunk
content = (MemcacheContent) channel.readInbound();
assertThat(content, instanceOf(LastMemcacheContent.class));
assertThat(content.content().toString(CharsetUtil.UTF_8), is(msgBody.substring(7, 9)));
content.release();
// Third message
response = (BinaryMemcacheResponse) channel.readInbound();
assertThat(response.getHeader().getStatus(), is(BinaryMemcacheResponseStatus.KEY_ENOENT));
assertThat(response.getHeader().getTotalBodyLength(), is(msgBody.length()));
response.release();
// Third message first content chunk
content = (MemcacheContent) channel.readInbound();
assertThat(content, instanceOf(LastMemcacheContent.class));
assertThat(content.content().toString(CharsetUtil.UTF_8), is(msgBody));
content.release();
}
/**
* This test makes sure that even when the decoder is confronted with various chunk sizes in the
* middle of decoding, it can recover and decode all the time eventually.
*/
@Test
public void shouldHandleNonUniformNetworkBatches() {
ByteBuf incoming = Unpooled.copiedBuffer(SET_REQUEST_WITH_CONTENT);
while (incoming.isReadable()) {
channel.writeInbound(incoming.readBytes(5));
}
BinaryMemcacheRequest request = (BinaryMemcacheRequest) channel.readInbound();
assertThat(request, notNullValue());
assertThat(request.getHeader(), notNullValue());
assertThat(request.getKey(), notNullValue());
assertThat(request.getExtras(), nullValue());
request.release();
MemcacheContent content1 = (MemcacheContent) channel.readInbound();
MemcacheContent content2 = (MemcacheContent) channel.readInbound();
assertThat(content1, instanceOf(MemcacheContent.class));
assertThat(content2, instanceOf(LastMemcacheContent.class));
assertThat(content1.content().readableBytes(), is(3));
assertThat(content2.content().readableBytes(), is(5));
content1.release();
content2.release();
}
/** This test makes sure that large content is emitted in chunks. */
@Test
public void shouldDecodeRequestWithChunkedContent() {
int smallBatchSize = 2;
channel = new EmbeddedChannel(new BinaryMemcacheRequestDecoder(smallBatchSize));
ByteBuf incoming = Unpooled.buffer();
incoming.writeBytes(SET_REQUEST_WITH_CONTENT);
channel.writeInbound(incoming);
BinaryMemcacheRequest request = (BinaryMemcacheRequest) channel.readInbound();
assertThat(request, notNullValue());
assertThat(request.getHeader(), notNullValue());
assertThat(request.getKey(), notNullValue());
assertThat(request.getExtras(), nullValue());
BinaryMemcacheRequestHeader header = request.getHeader();
assertThat(header.getKeyLength(), is((short) 3));
assertThat(header.getExtrasLength(), is((byte) 0));
assertThat(header.getTotalBodyLength(), is(11));
request.release();
int expectedContentChunks = 4;
for (int i = 1; i <= expectedContentChunks; i++) {
MemcacheContent content = (MemcacheContent) channel.readInbound();
if (i < expectedContentChunks) {
assertThat(content, instanceOf(MemcacheContent.class));
} else {
assertThat(content, instanceOf(LastMemcacheContent.class));
}
assertThat(content.content().readableBytes(), is(2));
content.release();
}
assertThat(channel.readInbound(), nullValue());
}