org.springframework.xd.dirt.zookeeper

Class ZooKeeperUtils

java.lang.Object

org.springframework.xd.dirt.zookeeper.ZooKeeperUtils

public abstract class ZooKeeperUtils
extends java.lang.Object

Utility methods for ZooKeeper.

Author:

David Turanski, Patrick Peralta, Ilayaperumal Gopinathan

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ZooKeeperUtils.StripPathConverter Converter from ChildData to leaf name string.

Field Summary

Fields

Modifier and Type	Field and Description
static ZooKeeperUtils.StripPathConverter	stripPathConverter Converter from ChildData to the leaf path name string.

Constructor Summary

Constructors

Constructor and Description
ZooKeeperUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static java.util.Map<java.lang.String,java.lang.String>	bytesToMap(byte[] bytes) Convert a byte array containing a JSON string to a map of key/value pairs.
static java.lang.String	getStackTrace(java.lang.Throwable t) Return the full stack trace for a Throwable.
static void	logCacheEvent(org.slf4j.Logger logger, org.apache.curator.framework.recipes.cache.PathChildrenCacheEvent event) Utility method to log events.
static byte[]	mapToBytes(java.util.Map<java.lang.String,java.lang.String> map) Convert a map of string key/value pairs to a JSON string in a byte array.
static void	wrapAndThrowIgnoring(java.lang.Throwable t, java.lang.Class... ignored) Throw a wrapped exception ignoring specific Exception types, if any.
static java.lang.RuntimeException	wrapThrowable(java.lang.Throwable t) Utility method to wrap a Throwable in a ZooKeeperAccessException.
static java.lang.RuntimeException	wrapThrowable(java.lang.Throwable t, java.lang.String message) Utility method to wrap a Throwable in a ZooKeeperAccessException.

Methods inherited from class java.lang.Object

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

Field Detail

stripPathConverter

public static final ZooKeeperUtils.StripPathConverter stripPathConverter

Converter from ChildData to the leaf path name string.

Constructor Detail

ZooKeeperUtils

public ZooKeeperUtils()

Method Detail

mapToBytes

public static byte[] mapToBytes(java.util.Map<java.lang.String,java.lang.String> map)

Convert a map of string key/value pairs to a JSON string in a byte array.

Parameters:

map - map to convert

Returns:

byte array

bytesToMap

public static java.util.Map<java.lang.String,java.lang.String> bytesToMap(byte[] bytes)

Convert a byte array containing a JSON string to a map of key/value pairs.

Parameters:

bytes - byte array containing the key/value pair strings

Returns:

a new map instance containing the key/value pairs

wrapThrowable

public static java.lang.RuntimeException wrapThrowable(java.lang.Throwable t)

Utility method to wrap a Throwable in a ZooKeeperAccessException.

Parameters:

t - the throwable

wrapThrowable

public static java.lang.RuntimeException wrapThrowable(java.lang.Throwable t,
                                       java.lang.String message)

Utility method to wrap a Throwable in a ZooKeeperAccessException.

Parameters:

t - the throwable

message - use this message if not null

wrapAndThrowIgnoring

public static void wrapAndThrowIgnoring(java.lang.Throwable t,
                        java.lang.Class... ignored)

Throw a wrapped exception ignoring specific Exception types, if any.

Parameters:

t - the throwable

ignored - a varargs list of ignored exception types

logCacheEvent

public static void logCacheEvent(org.slf4j.Logger logger,
                 org.apache.curator.framework.recipes.cache.PathChildrenCacheEvent event)

Utility method to log events.

Parameters:

logger - logger to write to

event - event to log

getStackTrace

public static java.lang.String getStackTrace(java.lang.Throwable t)

Return the full stack trace for a Throwable.

Parameters:

t - throwable for which to obtain the full stack trace

Returns:

string containing the full stack trace