@Override
public long shutdown(AdaptorShutdownPolicy p) throws AdaptorException {
if (p != RESTARTING) {
if (outBuf.delete()) {
log.warn("Cannot delete output buffer file:" + outBuf.getAbsolutePath());
}
;
}
return inner.shutdown(p);
}
@Override
public void start(String adaptorID, String type, long offset, ChunkReceiver dest)
throws AdaptorException {
try {
String dummyAdaptorID = adaptorID;
this.dest = dest;
outBuf = new File(BUF_DIR, adaptorID);
long newOffset = offset;
if (outBuf.length() > 0) {
DataInputStream dis = new DataInputStream(new FileInputStream(outBuf));
while (dis.available() > 0) {
Chunk c = ChunkImpl.read(dis);
fSize += c.getData().length;
long seq = c.getSeqID();
if (seq > offset) {
dest.add(c);
newOffset = seq;
}
}
// send chunks that are outstanding
dis.close();
}
outToDisk = new DataOutputStream(new FileOutputStream(outBuf, true));
inner.start(dummyAdaptorID, innerType, newOffset, this);
} catch (IOException e) {
throw new AdaptorException(e);
} catch (InterruptedException e) {
throw new AdaptorException(e);
}
}
@Override
public void committed(long l) {
try {
long bytesOutstanding = highestSentOffset - l;
if (fSize - bytesOutstanding > COMPACT_AT) {
fSize = 0;
outToDisk.close();
File outBufTmp = new File(outBuf.getAbsoluteFile(), outBuf.getName() + ".tmp");
if (!outBuf.renameTo(outBufTmp)) {
log.warn(
"Cannot rename temp file "
+ outBuf.getAbsolutePath()
+ " to "
+ outBufTmp.getAbsolutePath());
}
;
outToDisk = new DataOutputStream(new FileOutputStream(outBuf, false));
DataInputStream dis = new DataInputStream(new FileInputStream(outBufTmp));
while (dis.available() > 0) {
Chunk c = ChunkImpl.read(dis);
if (c.getSeqID() > l) { // not yet committed
c.write(outToDisk);
fSize += c.getData().length;
}
}
dis.close();
if (!outBufTmp.delete()) {
log.warn("Can not delete temp file: " + outBufTmp.getAbsolutePath());
}
;
}
} catch (IOException e) {
log.error(e);
// should this be fatal?
}
}