com.sun.enterprise.v3.admin.cluster

Class ClusterCommandHelper

java.lang.Object

com.sun.enterprise.v3.admin.cluster.ClusterCommandHelper

public class ClusterCommandHelper
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ClusterCommandHelper.ReportResult

Constructor Summary

Constructors

Constructor and Description
ClusterCommandHelper(Domain domain, CommandRunner runner) Construct a ClusterCommandHelper

Method Summary

Modifier and Type	Method and Description
List<Server>	optimizeServerListOrder(List<Server> original) Optimize the order of the list of servers.
ActionReport	runCommand(String command, ParameterMap map, String targetName, AdminCommandContext context, boolean verbose) Loop through all instances in a cluster and execute a command for each one.
ActionReport	runCommand(String command, ParameterMap map, String targetName, AdminCommandContext context, boolean verbose, boolean rolling) Loop through all instances in a cluster and execute a command for each one.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClusterCommandHelper

public ClusterCommandHelper(Domain domain,
                            CommandRunner runner)

Construct a ClusterCommandHelper

Parameters:

domain - The Domain we are running in

runner - A CommandRunner to use for running commands

Method Detail

runCommand

public ActionReport runCommand(String command,
                               ParameterMap map,
                               String targetName,
                               AdminCommandContext context,
                               boolean verbose)
                        throws CommandException

Loop through all instances in a cluster and execute a command for each one.

Parameters:

command - The string of the command to run. The instance name will be used as the operand for the command.

map - A map of parameters to use for the command. May be null if no parameters. When the command is executed for a server instance, the instance name is set as the DEFAULT parameter (operand)

targetName - The name of the cluster or deployment group containing the instances to run the command against.

context - The AdminCommandContext to use when executing the command.

verbose - true for more verbose output

Returns:

An ActionReport containing the results

Throws:

CommandException

runCommand

public ActionReport runCommand(String command,
                               ParameterMap map,
                               String targetName,
                               AdminCommandContext context,
                               boolean verbose,
                               boolean rolling)
                        throws CommandException

Loop through all instances in a cluster and execute a command for each one.

Parameters:

command - The string of the command to run. The instance name will be used as the operand for the command.

map - A map of parameters to use for the command. May be null if no parameters. When the command is executed for a server instance, the instance name is set as the DEFAULT parameter (operand)

targetName - The name of the cluster or deployment group containing the instances to run the command against.

context - The AdminCommandContext to use when executing the command.

verbose - true for more verbose output

rolling - Whether calls should be serialized to help with rolling restarts

Returns:

An ActionReport containing the results

Throws:

CommandException

optimizeServerListOrder

public List<Server> optimizeServerListOrder(List<Server> original)

Optimize the order of the list of servers. Basically we want the server list to be ordered such that we rotate over the nodes. For example we want: n1, n2, n3, n1, n2, n3 not: n1, n1, n2, n2, n3, n3. This is to spread the load of operations across nodes.

Parameters:

original - a list of servers

Returns:

a list of servers with a more optimal order