Java Code Examples for java.nio.channels.SeekableByteChannel#truncate()
The following examples show how to use
java.nio.channels.SeekableByteChannel#truncate() .
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Example 1
| Source File: RedissonBinaryStreamTest.java From redisson with Apache License 2.0 | 6 votes |
|
@Test
public void testChannelTruncate() throws IOException {
RBinaryStream stream = redisson.getBinaryStream("test");
SeekableByteChannel c = stream.getChannel();
c.write(ByteBuffer.wrap(new byte[]{1, 2, 3, 4, 5, 6, 7}));
assertThat(c.size()).isEqualTo(7);
c.truncate(3);
c.position(0);
c.truncate(10);
ByteBuffer b = ByteBuffer.allocate(3);
c.read(b);
byte[] bb = new byte[3];
b.flip();
b.get(bb);
assertThat(c.size()).isEqualTo(3);
assertThat(bb).isEqualTo(new byte[]{1, 2, 3});
}
Example 2
| Source File: ReplayCachePrecise.java From jdk8u-jdk with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 3
| Source File: IOUtilities.java From sis with Apache License 2.0 | 5 votes |
|
/**
* Truncates the given output stream at its current position.
* This method works with Apache SIS implementations backed (sometime indirectly) by {@link SeekableByteChannel}.
* Callers may need to {@linkplain java.io.Flushable#flush() flush} the stream before to invoke this method.
*
* @param stream the output stream or writable channel to truncate.
* @return whether this method has been able to truncate the given stream.
* @throws IOException if an error occurred while truncating the stream.
*/
public static boolean truncate(AutoCloseable stream) throws IOException {
if (stream instanceof OutputStreamAdapter) {
stream = ((OutputStreamAdapter) stream).output;
}
if (stream instanceof ChannelDataOutput) {
stream = ((ChannelDataOutput) stream).channel;
}
if (stream instanceof SeekableByteChannel) {
final SeekableByteChannel s = (SeekableByteChannel) stream;
s.truncate(s.position());
return true;
}
return false;
}
Example 4
| Source File: ReplayCachePrecise.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 5
| Source File: ReplayCachePrecise.java From jdk8u-jdk with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 6
| Source File: ReplayCachePrecise.java From jdk8u_jdk with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 7
| Source File: ReplayCachePrecise.java From openjdk-8 with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 8
| Source File: ReplayCachePrecise.java From openjdk-8-source with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 9
| Source File: ReplayCachePrecise.java From hottub with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 10
| Source File: ReplayCachePrecise.java From dragonwell8_jdk with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 11
| Source File: ReplayCachePrecise.java From openjdk-jdk9 with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"HASH", "1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"HASH", "2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 12
| Source File: ReplayCachePrecise.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 13
| Source File: FilePlugin.java From trufflesqueak with MIT License | 5 votes |
|
@TruffleBoundary(transferToInterpreterOnException = false)
private static void truncate(final SeekableByteChannel channel, final long to) {
try {
channel.truncate(to);
} catch (IllegalArgumentException | IOException e) {
log("Failed to truncate file", e);
throw PrimitiveFailed.GENERIC_ERROR;
}
}
Example 14
| Source File: ReplayCachePrecise.java From openjdk-jdk8u with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 15
| Source File: JournaledCoalescer.java From emissary with Apache License 2.0 | 5 votes |
|
/**
* Copies all bytes from all paths that match to an output stream.
*
* @param journal The journal to combine in the output stream
* @param rolledOutput The OutputStream object to use
*/
protected void combineFiles(Journal journal, SeekableByteChannel rolledOutput) throws IOException {
long startPos = rolledOutput.position();
JournalEntry last = journal.getLastEntry();
if (last == null) {
LOG.debug("Empty Journal encountered. {}", journal);
return;
}
long offset = last.getOffset();
Path p = Paths.get(last.getVal());
LOG.debug("Reading from path {}", p);
try (FileChannel part = FileChannel.open(p, READ)) {
long partSize = Files.size(p);
if (partSize < last.getOffset()) {
JournalEntry lastGood = journal.getLastValidEntry(partSize);
offset = lastGood.getOffset();
LOG.warn("The bgpart file, {}, likely lost data due to a crash. Part size: {}, Expected {}, Actual: {}", last.getVal(), partSize,
last.getOffset(), offset);
}
long xfer;
// for loop due to contract of channel.transferTo()
for (long count = offset; count > 0L;) {
xfer = part.transferTo(part.position(), count, rolledOutput);
part.position(part.position() + xfer);
count -= xfer;
if (part.position() == partSize && count > 0L) {
throw new IOException("Premature EOF. Expected " + offset + ", but only transferred " + partSize);
}
}
LOG.debug("Successfully appended {} bytes from {} to output file.", offset, p);
} catch (IOException ex) {
LOG.error("Exception attempting to transfer {} bytes from {} to output", offset, p.toString(), ex);
renameToError(p);
renameToError(journal.getJournalPath());
rolledOutput.truncate(startPos);
rolledOutput.position(startPos);
}
}
Example 16
| Source File: ReplayCachePrecise.java From jdk8u60 with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
Example 17
| Source File: ReplayCachePrecise.java From TencentKona-8 with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
"1111111111111111");
AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
"2222222222222222");
KerberosTime now = new KerberosTime(time(0)*1000L);
// When all new styles, must exact match
ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
cache.checkAndStore(now, a1);
cache.checkAndStore(now, a2);
// When only old style in cache, partial match
cache = ReplayCache.getInstance("dfl:./c2");
cache.checkAndStore(now, a1);
// A small surgery to remove the new style from the cache file
SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
StandardOpenOption.WRITE,
StandardOpenOption.READ);
ch.position(6);
ch.write(ByteBuffer.wrap(a1.encode(false)));
ch.truncate(ch.position());
ch.close();
try {
cache.checkAndStore(now, a2);
throw new Exception();
} catch (KrbException ke) {
// Correct
System.out.println(ke);
}
}
