Replaced println commands by proper logging
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8c3099d712
commit
b7e3f148a7
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@ -19,9 +19,15 @@ import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.atomic.AtomicInteger;
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import java.util.stream.Stream;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.google.common.base.Charsets;
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public class FileLocks {
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private static Logger log = LoggerFactory.getLogger(FileLocks.class);
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// Write locks
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/**
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@ -30,9 +36,9 @@ public class FileLocks {
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static void getExclusiveLockFromInputStream() throws IOException, NonWritableChannelException {
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Path path = Files.createTempFile("foo", "txt");
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try (FileInputStream fis = new FileInputStream(path.toFile()); FileLock lock = fis.getChannel().lock()) {
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System.out.println("This won't happen");
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log.debug("This won't happen");
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} catch (NonWritableChannelException e) {
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System.err.println(
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log.error(
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"The channel obtained through a FileInputStream isn't writable. "
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+ "You can't obtain an exclusive lock on it!");
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throw e;
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@ -52,7 +58,7 @@ public class FileLocks {
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try (RandomAccessFile file = new RandomAccessFile(path.toFile(), "rw");
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FileLock lock = file.getChannel().lock(from, size, false)) {
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if (lock.isValid()) {
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System.out.println("This is a valid exclusive lock");
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log.debug("This is a valid exclusive lock");
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return lock;
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}
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return null;
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@ -76,7 +82,7 @@ public class FileLocks {
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while (buffer.hasRemaining()) {
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channel.write(buffer, channel.size());
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}
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System.out.println("This was written to the file");
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log.debug("This was written to the file");
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Files.lines(path).forEach(System.out::println);
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return lock;
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}
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@ -90,9 +96,9 @@ public class FileLocks {
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Path path = Files.createTempFile("foo", "txt");
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try (FileOutputStream fis = new FileOutputStream(path.toFile());
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FileLock lock = fis.getChannel().lock(0, Long.MAX_VALUE, true)) {
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System.out.println("This won't happen");
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log.debug("This won't happen");
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} catch (NonReadableChannelException e) {
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System.err.println(
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log.error(
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"The channel obtained through a FileOutputStream isn't readable. "
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+ "You can't obtain an shared lock on it!");
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throw e;
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@ -112,7 +118,7 @@ public class FileLocks {
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try (FileInputStream fis = new FileInputStream(path.toFile());
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FileLock lock = fis.getChannel().lock(from, size, true)) {
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if (lock.isValid()) {
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System.out.println("This is a valid shared lock");
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log.debug("This is a valid shared lock");
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return lock;
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}
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return null;
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@ -132,12 +138,12 @@ public class FileLocks {
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try (RandomAccessFile file = new RandomAccessFile(path.toFile(), "r"); // could also be "rw", but "r" is sufficient for reading
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FileLock lock = file.getChannel().lock(from, size, true)) {
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if (lock.isValid()) {
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System.out.println("This is a valid shared lock");
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log.debug("This is a valid shared lock");
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return lock;
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}
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return null;
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} catch (Exception e) {
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System.out.println(e.getMessage());
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log.error(e.getMessage());
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}
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return null;
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}
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@ -227,7 +233,7 @@ public class FileLocks {
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lineCount.incrementAndGet();
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System.out.println(line);
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});
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System.out.println("Total lines written = " + lineCount.get());
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log.info("Total lines written = " + lineCount.get());
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}
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}
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