org.apache.whirr.cli.command

Class RoleLifecycleCommand

java.lang.Object

org.apache.whirr.command.Command

org.apache.whirr.command.AbstractClusterCommand

org.apache.whirr.cli.command.RoleLifecycleCommand

Direct Known Subclasses:

ConfigureServicesCommand, RestartServicesCommand, StartServicesCommand, StopServicesCommand

public abstract class RoleLifecycleCommand
extends AbstractClusterCommand

Field Summary

Fields inherited from class org.apache.whirr.command.AbstractClusterCommand

factory, parser, stateStoreFactory

Constructor Summary

Constructors

Constructor and Description
RoleLifecycleCommand(String name, String description, ClusterControllerFactory factory, ClusterStateStoreFactory stateStoreFactory)

Method Summary

Methods

Modifier and Type	Method and Description
protected Set<String>	getTargetInstanceIdsOrEmpty(joptsimple.OptionSet optionSet) Get the list of targeted instance IDs for this command or an empty set
protected Set<String>	getTargetRolesOrEmpty(joptsimple.OptionSet optionSet) Get the list of targeted roles for this command or an empty set
void	printUsage(PrintStream stream) Print a generic usage indication for this class of commands
int	run(InputStream in, PrintStream out, PrintStream err, List<String> args)
abstract int	runLifecycleStep(ClusterSpec clusterSpec, ClusterController controller, joptsimple.OptionSet optionSet) Implement this method to trigger the relevant role lifecycle action

Methods inherited from class org.apache.whirr.command.AbstractClusterCommand

createClusterController, createClusterStateStore, getCluster, getClusterSpec, printErrorAndHelpHint, printProviderInfo

Methods inherited from class org.apache.whirr.command.Command

getDescription, getName

Methods inherited from class java.lang.Object

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

Constructor Detail

RoleLifecycleCommand

public RoleLifecycleCommand(String name,
                    String description,
                    ClusterControllerFactory factory,
                    ClusterStateStoreFactory stateStoreFactory)

Method Detail

runLifecycleStep

public abstract int runLifecycleStep(ClusterSpec clusterSpec,
                   ClusterController controller,
                   joptsimple.OptionSet optionSet)
                              throws IOException,
                                     InterruptedException

Implement this method to trigger the relevant role lifecycle action

Throws:

IOException

InterruptedException

run

public int run(InputStream in,
      PrintStream out,
      PrintStream err,
      List<String> args)
        throws Exception

Specified by:

run in class Command

Throws:

Exception

getTargetRolesOrEmpty

protected Set<String> getTargetRolesOrEmpty(joptsimple.OptionSet optionSet)

Get the list of targeted roles for this command or an empty set

getTargetInstanceIdsOrEmpty

protected Set<String> getTargetInstanceIdsOrEmpty(joptsimple.OptionSet optionSet)

Get the list of targeted instance IDs for this command or an empty set

printUsage

public void printUsage(PrintStream stream)
                throws IOException

Print a generic usage indication for this class of commands

Overrides:

printUsage in class AbstractClusterCommand

Throws:

IOException