HpackDecoderBenchmark Class — netty Architecture

Source Code

microbench/src/main/java/io/netty/handler/codec/http2/HpackDecoderBenchmark.java lines 48–101

public class HpackDecoderBenchmark extends AbstractMicrobenchmark {

    @Param
    public HpackHeadersSize size;

    @Param({ "true", "false" })
    public boolean sensitive;

    @Param({ "true", "false" })
    public boolean limitToAscii;

    private ByteBuf input;

    @Setup(Level.Trial)
    public void setup() throws Http2Exception {
        input = wrappedBuffer(getSerializedHeaders(http2Headers(size, limitToAscii), sensitive));
    }

    @TearDown(Level.Trial)
    public void teardown() {
        input.release();
    }

    @Benchmark
    @BenchmarkMode(Mode.Throughput)
    public void decode(final Blackhole bh) throws Http2Exception {
        HpackDecoder hpackDecoder = new HpackDecoder(Integer.MAX_VALUE);
        @SuppressWarnings("unchecked")
        Http2Headers headers =
                new DefaultHttp2Headers() {
            @Override
            public Http2Headers add(CharSequence name, CharSequence value) {
                bh.consume(sensitive);
                return this;
            }
        };
        hpackDecoder.decode(0, input.duplicate(), headers, true);
    }

    private byte[] getSerializedHeaders(Http2Headers headers, boolean sensitive) throws Http2Exception {
        HpackEncoder hpackEncoder = HpackUtilBenchmark.newTestEncoder();
        ByteBuf out = size.newOutBuffer();
        try {
            hpackEncoder.encodeHeaders(3 /* randomly chosen */, out, headers,
                                  sensitive ? Http2HeadersEncoder.ALWAYS_SENSITIVE
                                            : Http2HeadersEncoder.NEVER_SENSITIVE);
            byte[] bytes = new byte[out.readableBytes()];
            out.readBytes(bytes);
            return bytes;
        } finally {
            out.release();
        }
    }
}