| 1 | // Copyright (c) 2006 Dustin Sallings <dustin@spy.net> |
| 2 | |
| 3 | package net.spy.memcached.protocol.ascii; |
| 4 | |
| 5 | import java.nio.ByteBuffer; |
| 6 | |
| 7 | import net.spy.memcached.ops.OperationState; |
| 8 | import net.spy.memcached.ops.OperationStatus; |
| 9 | import net.spy.memcached.ops.StatsOperation; |
| 10 | |
| 11 | /** |
| 12 | * Operation to retrieve statistics from a memcached server. |
| 13 | */ |
| 14 | final class StatsOperationImpl extends OperationImpl |
| 15 | implements StatsOperation { |
| 16 | |
| 17 | private static final OperationStatus END=new OperationStatus(true, "END"); |
| 18 | |
| 19 | private static final byte[] MSG="stats\r\n".getBytes(); |
| 20 | |
| 21 | private final byte[] msg; |
| 22 | private final StatsOperation.Callback cb; |
| 23 | |
| 24 | public StatsOperationImpl(String arg, StatsOperation.Callback c) { |
| 25 | super(c); |
| 26 | cb=c; |
| 27 | if(arg == null) { |
| 28 | msg=MSG; |
| 29 | } else { |
| 30 | msg=("stats " + arg + "\r\n").getBytes(); |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | @Override |
| 35 | public void handleLine(String line) { |
| 36 | if(line.equals("END")) { |
| 37 | cb.receivedStatus(END); |
| 38 | transitionState(OperationState.COMPLETE); |
| 39 | } else { |
| 40 | String[] parts=line.split(" ", 3); |
| 41 | assert parts.length == 3; |
| 42 | cb.gotStat(parts[1], parts[2]); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | @Override |
| 47 | public void initialize() { |
| 48 | setBuffer(ByteBuffer.wrap(msg)); |
| 49 | } |
| 50 | |
| 51 | @Override |
| 52 | protected void wasCancelled() { |
| 53 | cb.receivedStatus(CANCELLED); |
| 54 | } |
| 55 | |
| 56 | } |