Package org.apache.storm.utils

Interface Summary

Interface	Description
IPredicate<T>	This interface is implemented by classes, instances of which can be passed into certain Util functions which test some collection for elements matching the IPredicate.
IVersionInfo	Implementation of VersionInfo that uses a properties file to get the VersionInfo.
JCQueue.Consumer
JCQueue.ExitCondition
LruMap.CacheEvictionCallback<K,V>
NimbusClient.WithNimbus	An interface to allow callbacks with a thrift nimbus client.
RotatingMap.ExpiredCallback<K,V>
ShellCommandRunner	Contains convenience functions for running shell commands for cases that are too simple to need a full ShellUtils implementation.
ShellLogHandler	Handle logging from non-JVM processes.
SupervisorIfaceFactory
TimeCacheMap.ExpiredCallback<K,V>

Class Summary

Class	Description
BatchHelper
BufferFileInputStream
BufferInputStream
ConfigUtils
CRC32OutputStream
CuratorUtils
DaemonConfigValidation
DaemonConfigValidation.NumaEntryValidator
DefaultShellLogHandler	Default implementation of ShellLogHandler.
DRPCClient
DRPCClient.LocalOverride
EnumUtil
EquivalenceUtils
ExtendedThreadPoolExecutor
HadoopLoginUtil	UserGroupInformation#loginUserFromKeytab(String, String) changes the static fields of UserGroupInformation, especially the current logged-in user, and UserGroupInformation itself is not thread-safe.
InprocMessaging
JCQueue
JCQueueMetrics
KeyedRoundRobinQueue<V>
ListDelegate
LocalState	A simple, durable, atomic K/V database.
LruMap<A,B>
Monitor
MutableInt
MutableLong
MutableObject
NimbusClient	Client used for connecting to nimbus.
NimbusClient.LocalOverride
ObjectReader
ReflectionUtils
RegisteredGlobalState	This class is used as part of testing Storm.
RotatingMap<K,V>	Expires keys that have not been updated in the configured number of seconds.
ServerConfigUtils
ServerUtils
ServiceRegistry
ShellBoltMessageQueue	A data structure for ShellBolt which includes two queues (FIFO), which one is for task ids (unbounded), another one is for bolt msg (bounded).
ShellCommandRunnerImpl
ShellProcess
ShellUtils
ShellUtils.ShellCommandExecutor	A simple shell command executor.
SimpleVersion	Take a version string and parse out a Major.Minor version
StormBoundedExponentialBackoffRetry
StormCommonInstaller
SupervisorClient	Client for interacting with Supervisor server, now we use supervisor server mainly for cases below.
ThriftTopologyUtils
Time	This class implements time simulation support.
Time.SimulatedTime
TimeCacheMap<K,V>	Deprecated
TopologySpoutLag
TransferDrainer
TupleUtils
Utils
Utils.SmartThread	A thread that can answer if it is sleeping in the case of simulated time.
Utils.UptimeComputer
VersionedStore
VersionInfo
WebAppUtils
WindowedTimeThrottler
WritableUtils
ZookeeperAuthInfo
ZookeeperServerCnxnFactory

Enum Summary

Enum	Description
ShellUtils.OSType	OSType detection.

Exception Summary

Exception	Description
DisallowedStrategyException
NimbusLeaderNotFoundException	This exception class is used to signify a problem with nimbus leader identification.
ShellUtils.ExitCodeException	This is an IOException with exit code added.
WrappedAlreadyAliveException	Wraps the generated TException to allow getMessage() to return a valid string.
WrappedAuthorizationException	Wraps the generated TException to allow getMessage() to return a valid string.
WrappedDRPCExecutionException	Wraps the generated TException to allow getMessage() to return a valid string.
WrappedHBExecutionException	Wraps the generated TException to allow getMessage() to return a valid string.
WrappedIllegalStateException
WrappedInvalidTopologyException	Wraps the generated TException to allow getMessage() to return a valid string.
WrappedKeyAlreadyExistsException	Wraps the generated TException to allow getMessage() to return a valid string.
WrappedKeyNotFoundException	Wraps the generated TException to allow getMessage() to return a valid string.
WrappedNotAliveException	Wraps the generated TException to allow getMessage() to return a valid string.