/**
* Read block from file.
*
* @param file - File to read.
* @param off - Marker position in file to start read from if {@code -1} read last blockSz bytes.
* @param blockSz - Maximum number of chars to read.
* @param lastModified - File last modification time.
* @return Read file block.
* @throws IOException In case of error.
*/
public static VisorFileBlock readBlock(File file, long off, int blockSz, long lastModified)
throws IOException {
RandomAccessFile raf = null;
try {
long fSz = file.length();
long fLastModified = file.lastModified();
long pos = off >= 0 ? off : Math.max(fSz - blockSz, 0);
// Try read more that file length.
if (fLastModified == lastModified && fSz != 0 && pos >= fSz)
throw new IOException(
"Trying to read file block with wrong offset: " + pos + " while file size: " + fSz);
if (fSz == 0)
return new VisorFileBlock(file.getPath(), pos, fLastModified, 0, false, EMPTY_FILE_BUF);
else {
int toRead = Math.min(blockSz, (int) (fSz - pos));
byte[] buf = new byte[toRead];
raf = new RandomAccessFile(file, "r");
raf.seek(pos);
int cntRead = raf.read(buf, 0, toRead);
if (cntRead != toRead)
throw new IOException(
"Count of requested and actually read bytes does not match [cntRead="
+ cntRead
+ ", toRead="
+ toRead
+ ']');
boolean zipped = buf.length > 512;
return new VisorFileBlock(
file.getPath(), pos, fSz, fLastModified, zipped, zipped ? zipBytes(buf) : buf);
}
} finally {
U.close(raf, null);
}
}
private void scheduleRecheck() {
if (!isDone()) {
GridTimeoutObject old = timeoutObj;
if (old != null) cctx.kernalContext().timeout().removeTimeoutObject(old);
GridTimeoutObject timeoutObj =
new GridTimeoutObjectAdapter(
cctx.gridConfig().getNetworkTimeout()
* Math.max(1, cctx.gridConfig().getCacheConfiguration().length)) {
@Override
public void onTimeout() {
cctx.kernalContext()
.closure()
.runLocalSafe(
new Runnable() {
@Override
public void run() {
if (isDone()) return;
if (!enterBusy()) return;
try {
U.warn(
log,
"Retrying preload partition exchange due to timeout [done="
+ isDone()
+ ", dummy="
+ dummy
+ ", exchId="
+ exchId
+ ", rcvdIds="
+ F.id8s(rcvdIds)
+ ", rmtIds="
+ F.id8s(rmtIds)
+ ", remaining="
+ F.id8s(remaining())
+ ", init="
+ init
+ ", initFut="
+ initFut.isDone()
+ ", ready="
+ ready
+ ", replied="
+ replied
+ ", added="
+ added
+ ", oldest="
+ U.id8(oldestNode.get().id())
+ ", oldestOrder="
+ oldestNode.get().order()
+ ", evtLatch="
+ evtLatch.getCount()
+ ", locNodeOrder="
+ cctx.localNode().order()
+ ", locNodeId="
+ cctx.localNode().id()
+ ']',
"Retrying preload partition exchange due to timeout.");
recheck();
} finally {
leaveBusy();
}
}
});
}
};
this.timeoutObj = timeoutObj;
cctx.kernalContext().timeout().addTimeoutObject(timeoutObj);
}
}