net.logstash.logback.stacktrace

Class StackHasher

java.lang.Object

net.logstash.logback.stacktrace.StackHasher

public class StackHasher
extends Object

Utility class that generates a hash from any Java error

Author:

Pierre Smeyers

Constructor Summary

Constructors

Constructor and Description
StackHasher() Constructs a StackHasher using StackElementFilter.withSourceInfo() filter
StackHasher(StackElementFilter filter) Constructs a StackHasher with the given filter.

Method Summary

Modifier and Type	Method and Description
String	hexHash(Throwable error) Generates a Hexadecimal hash for the given error stack.
Deque<String>	hexHashes(Throwable error) Generates and returns Hexadecimal hashes for the error stack and each ancestor cause.

Methods inherited from class java.lang.Object

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

Constructor Detail

StackHasher

public StackHasher(StackElementFilter filter)

Constructs a StackHasher with the given filter.

Parameters:

filter - filter

StackHasher

public StackHasher()

Constructs a StackHasher using StackElementFilter.withSourceInfo() filter

Method Detail

hexHash

public String hexHash(Throwable error)

Generates a Hexadecimal hash for the given error stack.

Two errors with the same stack hash are most probably same errors.

Parameters:

error - the error to generate a hash from

Returns:

the generated hexadecimal hash

hexHashes

public Deque<String> hexHashes(Throwable error)

Generates and returns Hexadecimal hashes for the error stack and each ancestor cause.

The first queue element is the stack hash for the topmost error, the next one (if any) is it's direct cause hash, and so on...

Parameters:

error - the error to generate a hash from

Returns:

a Dequeue with hashes