Package org.apache.juneau.microservice.examples

Class LogParser

java.lang.Object

org.apache.juneau.microservice.examples.LogParser

All Implemented Interfaces:

Closeable, AutoCloseable, Iterable<LogParser.Entry>

public class LogParser
extends Object
implements Iterable<LogParser.Entry>, Closeable

Utility class for reading log files.

Provides the capability of returning splices of log files based on dates and filtering based on thread and logger names.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	LogParser.Entry	Represents a single line from the log file.

Constructor Summary

Constructors

Constructor	Description
LogParser(LogEntryFormatter formatter, File f, Date start, Date end, String thread, String[] loggers, String[] severity)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	close()
boolean	hasNext()	Returns whether any entries are available.
Iterator<LogParser.Entry>	iterator()
void	writeTo(Writer w)	Serializes the contents of the parsed log file to the specified writer and then closes the underlying reader.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

LogParser

public LogParser(LogEntryFormatter formatter,
 File f,
 Date start,
 Date end,
 String thread,
 String[] loggers,
 String[] severity)
          throws IOException

Constructor.

Parameters:

formatter - The log entry formatter.

f - The log file.

start - Don't return rows before this date. If null, start from the beginning of the file.

end - Don't return rows after this date. If null, go to the end of the file.

thread - Only return log entries with this thread name.

loggers - Only return log entries produced by these loggers (simple class names).

severity - Only return log entries with the specified severity.

Throws:

IOException - Thrown by underlying stream.

Method Details

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

hasNext

public boolean hasNext()

Returns whether any entries are available.

Returns:

true if entries are available, false otherwise.

iterator

public Iterator<LogParser.Entry> iterator()

Specified by:

iterator in interface Iterable<LogParser.Entry>

writeTo

public void writeTo(Writer w)
             throws IOException

Serializes the contents of the parsed log file to the specified writer and then closes the underlying reader.

Parameters:

w - The writer to write the log file to.

Throws:

IOException - Thrown by underlying stream.