org.apache.ignite.failure

Class AbstractFailureHandler

java.lang.Object

org.apache.ignite.failure.AbstractFailureHandler

All Implemented Interfaces:

FailureHandler

Direct Known Subclasses:

NoOpFailureHandler, RestartProcessFailureHandler, StopNodeFailureHandler, StopNodeOrHaltFailureHandler

public abstract class AbstractFailureHandler
extends Object
implements FailureHandler

Abstract superclass for FailureHandler implementations. Maintains a set of ignored failure types. Failure handler will not invalidate kernal context for this failures and will not handle it.

Constructor Summary

Constructors

Constructor and Description
AbstractFailureHandler()

Method Summary

Modifier and Type	Method and Description
Set<FailureType>	getIgnoredFailureTypes() Returns unmodifiable set of ignored failure types.
protected abstract boolean	handle(Ignite ignite, FailureContext failureCtx) Actual failure handling.
boolean	onFailure(Ignite ignite, FailureContext failureCtx) Handles failure occurred on ignite instance.
void	setIgnoredFailureTypes(Set<FailureType> failureTypes) Sets failure types that must be ignored by failure handler.
protected ShutdownPolicy	shutdownPolicyToHandleFailure() Returns ShutdownPolicy to be used when handling critical situation by FailureProcessor mechanism.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractFailureHandler

public AbstractFailureHandler()

Method Detail

setIgnoredFailureTypes

public void setIgnoredFailureTypes(Set<FailureType> failureTypes)

Sets failure types that must be ignored by failure handler.

Parameters:

failureTypes - Set of failure type that must be ignored.

See Also:

FailureType

getIgnoredFailureTypes

public Set<FailureType> getIgnoredFailureTypes()

Returns unmodifiable set of ignored failure types.

onFailure

public boolean onFailure(Ignite ignite,
                         FailureContext failureCtx)

Handles failure occurred on ignite instance. Failure details is contained in failureCtx. Returns true if kernal context must be invalidated by FailureProcessor after calling this method.

Specified by:

onFailure in interface FailureHandler

Parameters:

ignite - Ignite instance.

failureCtx - Failure context.

Returns:

Whether kernal context must be invalidated or not.

shutdownPolicyToHandleFailure

protected ShutdownPolicy shutdownPolicyToHandleFailure()

Returns ShutdownPolicy to be used when handling critical situation by FailureProcessor mechanism. IMMEDIATE shutdown policy is used as by default we treat any situation reached Failure Handler as requiering immediate shutdown.

handle

protected abstract boolean handle(Ignite ignite,
                                  FailureContext failureCtx)

Actual failure handling. This method is not called for ignored failure types.

See Also:

setIgnoredFailureTypes(Set)., FailureHandler.onFailure(Ignite, FailureContext).

toString

public String toString()

Overrides:

toString in class Object