org.glassfish.grizzly.spdy.frames.WindowUpdateFrame Maven / Gradle / Ivy
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package org.glassfish.grizzly.spdy.frames;
import org.glassfish.grizzly.Buffer;
import org.glassfish.grizzly.ThreadCache;
import org.glassfish.grizzly.memory.MemoryManager;
import static org.glassfish.grizzly.spdy.Constants.SPDY_VERSION;
public class WindowUpdateFrame extends SpdyFrame {
private static final ThreadCache.CachedTypeIndex CACHE_IDX =
ThreadCache.obtainIndex(WindowUpdateFrame.class, 8);
public static final int TYPE = 9;
private int streamId;
private int delta;
// ------------------------------------------------------------ Constructors
private WindowUpdateFrame() { }
// ---------------------------------------------------------- Public Methods
static WindowUpdateFrame create() {
WindowUpdateFrame frame = ThreadCache.takeFromCache(CACHE_IDX);
if (frame == null) {
frame = new WindowUpdateFrame();
}
return frame;
}
static WindowUpdateFrame create(final SpdyHeader header) {
WindowUpdateFrame frame = create();
frame.initialize(header);
return frame;
}
public static WindowUpdateFrameBuilder builder() {
return new WindowUpdateFrameBuilder();
}
public int getStreamId() {
return streamId;
}
public int getDelta() {
return delta;
}
@Override
public boolean isFlagSet(byte flag) {
return false;
}
@Override
public void setFlag(byte flag) {
// no-op
}
@Override
public void clearFlag(byte flag) {
// no-op
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append("WindowUpdateFrame");
sb.append("{streamId=").append(streamId);
sb.append(", delta=").append(delta);
sb.append('}');
return sb.toString();
}
// -------------------------------------------------- Methods from Cacheable
@Override
public void recycle() {
streamId = 0;
delta = 0;
super.recycle();
ThreadCache.putToCache(CACHE_IDX, this);
}
// -------------------------------------------------- Methods from SpdyFrame
@Override
public Buffer toBuffer(MemoryManager memoryManager) {
final Buffer buffer = memoryManager.allocate(16);
buffer.putInt(0, 0x80000000 | (SPDY_VERSION << 16) | TYPE); // C | SPDY_VERSION | WINDOW_UPDATE_FRAME
buffer.putInt(4, 8); // FLAGS | LENGTH
buffer.putInt(8, streamId & 0x7FFFFFFF); // X | STREAM_ID
buffer.putInt(12, delta & 0x7FFFFFFF); // X | delta
return buffer;
}
// ------------------------------------------------------- Protected Methods
@Override
protected void initialize(SpdyHeader header) {
super.initialize(header);
streamId = header.buffer.getInt() & 0x7FFFFFF;
delta = header.buffer.getInt() & 0x7FFFFFF;
}
// ---------------------------------------------------------- Nested Classes
public static class WindowUpdateFrameBuilder extends SpdyFrameBuilder {
private final WindowUpdateFrame windowUpdateFrame;
// -------------------------------------------------------- Constructors
protected WindowUpdateFrameBuilder() {
super(WindowUpdateFrame.create());
windowUpdateFrame = (WindowUpdateFrame) frame;
}
// ------------------------------------------------------ Public Methods
public WindowUpdateFrameBuilder streamId(final int streamId) {
windowUpdateFrame.streamId = streamId;
return this;
}
public WindowUpdateFrameBuilder delta(final int delta) {
windowUpdateFrame.delta = delta;
return this;
}
public WindowUpdateFrame build() {
return windowUpdateFrame;
}
// --------------------------------------- Methods from SpdyFrameBuilder
@Override
protected WindowUpdateFrameBuilder getThis() {
return this;
}
} // END WindowUpdateFrameBuilder
}