| 1 | package net.spy.memcached.protocol.ascii; |
| 2 | |
| 3 | import java.nio.ByteBuffer; |
| 4 | import java.util.Collection; |
| 5 | import java.util.Collections; |
| 6 | |
| 7 | import net.spy.memcached.KeyUtil; |
| 8 | import net.spy.memcached.ops.OperationCallback; |
| 9 | import net.spy.memcached.ops.OperationState; |
| 10 | import net.spy.memcached.ops.OperationStatus; |
| 11 | |
| 12 | /** |
| 13 | * Base class for ascii store operations (add, set, replace, append, prepend). |
| 14 | */ |
| 15 | abstract class BaseStoreOperationImpl extends OperationImpl { |
| 16 | |
| 17 | private static final int OVERHEAD = 32; |
| 18 | private static final OperationStatus STORED = |
| 19 | new OperationStatus(true, "STORED"); |
| 20 | protected final String type; |
| 21 | protected final String key; |
| 22 | protected final int flags; |
| 23 | protected final int exp; |
| 24 | protected final byte[] data; |
| 25 | |
| 26 | public BaseStoreOperationImpl(String t, String k, int f, int e, |
| 27 | byte[] d, OperationCallback cb) { |
| 28 | super(cb); |
| 29 | type=t; |
| 30 | key=k; |
| 31 | flags=f; |
| 32 | exp=e; |
| 33 | data=d; |
| 34 | } |
| 35 | |
| 36 | @Override |
| 37 | public void handleLine(String line) { |
| 38 | assert getState() == OperationState.READING |
| 39 | : "Read ``" + line + "'' when in " + getState() + " state"; |
| 40 | getCallback().receivedStatus(matchStatus(line, STORED)); |
| 41 | transitionState(OperationState.COMPLETE); |
| 42 | } |
| 43 | |
| 44 | @Override |
| 45 | public void initialize() { |
| 46 | ByteBuffer bb=ByteBuffer.allocate(data.length |
| 47 | + KeyUtil.getKeyBytes(key).length + OVERHEAD); |
| 48 | setArguments(bb, type, key, flags, exp, data.length); |
| 49 | assert bb.remaining() >= data.length + 2 |
| 50 | : "Not enough room in buffer, need another " |
| 51 | + (2 + data.length - bb.remaining()); |
| 52 | bb.put(data); |
| 53 | bb.put(CRLF); |
| 54 | bb.flip(); |
| 55 | setBuffer(bb); |
| 56 | } |
| 57 | |
| 58 | @Override |
| 59 | protected void wasCancelled() { |
| 60 | // XXX: Replace this comment with why I did this |
| 61 | getCallback().receivedStatus(CANCELLED); |
| 62 | } |
| 63 | |
| 64 | public Collection<String> getKeys() { |
| 65 | return Collections.singleton(key); |
| 66 | } |
| 67 | |
| 68 | public int getFlags() { |
| 69 | return flags; |
| 70 | } |
| 71 | |
| 72 | public int getExpiration() { |
| 73 | return exp; |
| 74 | } |
| 75 | |
| 76 | public byte[] getData() { |
| 77 | return data; |
| 78 | } |
| 79 | } |