org.apache.geode.distributed

Class LocatorLauncher.Builder

java.lang.Object

org.apache.geode.distributed.LocatorLauncher.Builder

Enclosing class:

LocatorLauncher

public static class LocatorLauncher.Builder
extends java.lang.Object

Following the Builder design pattern, the LocatorLauncher Builder is used to configure and create a properly initialized instance of the LocatorLauncher class for running the Locator and performing other Locator operations.

Field Summary

Fields

Modifier and Type	Field and Description
protected static LocatorLauncher.Command	DEFAULT_COMMAND

Constructor Summary

Constructors

Constructor and Description
Builder() Default constructor used to create an instance of the Builder class for programmatical access.
Builder(java.lang.String... args) Constructor used to create and configure an instance of the Builder class with the specified arguments, often passed from the command-line when launching an instance of this class from the command-line using the Java launcher.

Method Summary

Modifier and Type	Method and Description
LocatorLauncher	build() Validates the Builder configuration settings and then constructs an instance of the LocatorLauncher class to invoke operations on a GemFire Locator.
java.net.InetAddress	getBindAddress() Gets the IP address to which the Locator has bound itself listening for client requests.
LocatorLauncher.Command	getCommand() Gets the Locator launcher command used during the invocation of the LocatorLauncher.
java.lang.Boolean	getDebug() Determines whether the new instance of the LocatorLauncher will be set to debug mode.
java.util.Properties	getDistributedSystemProperties() Gets the GemFire Distributed System (cluster) Properties configuration.
java.lang.Boolean	getForce() Gets the boolean value used by the Locator to determine if it should overwrite the PID file if it already exists.
java.lang.Boolean	getHelp() Determines whether the new instance of LocatorLauncher will be used to output help information for either a specific command, or for using LocatorLauncher in general.
java.lang.String	getHostnameForClients() Gets the hostname used by clients to lookup the Locator.
java.lang.String	getMemberName() Gets the member name of this Locator in GemFire.
java.lang.Integer	getPid() Gets the process ID (PID) of the running Locator indicated by the user as an argument to the LocatorLauncher.
java.lang.Integer	getPort() Gets the port number used by the Locator to listen for client requests.
java.lang.Boolean	getRedirectOutput() Determines whether the new instance of LocatorLauncher will redirect output to system logs when starting a Locator.
java.lang.String	getWorkingDirectory() Gets the working directory pathname in which the Locator will be ran.
protected void	parseArguments(java.lang.String... args) Parses an array of arguments to configure this Builder with the intent of constructing a Locator launcher to invoke a Locator.
protected void	parseCommand(java.lang.String... args) Iterates the list of arguments in search of the target Locator launcher command.
protected void	parseMemberName(java.lang.String[] args) Iterates the list of arguments in search of the Locator's GemFire member name.
LocatorLauncher.Builder	set(java.lang.String propertyName, java.lang.String propertyValue) Sets a GemFire Distributed System Property.
LocatorLauncher.Builder	setBindAddress(java.lang.String bindAddress) Sets the IP address as an java.net.InetAddress to which the Locator has bound itself listening for client requests.
LocatorLauncher.Builder	setCommand(LocatorLauncher.Command command) Sets the Locator launcher command used during the invocation of the LocatorLauncher
LocatorLauncher.Builder	setDebug(java.lang.Boolean debug) Sets whether the new instance of the LocatorLauncher will be set to debug mode.
LocatorLauncher.Builder	setForce(java.lang.Boolean force) Sets the boolean value used by the Locator to determine if it should overwrite the PID file if it already exists.
LocatorLauncher.Builder	setHelp(java.lang.Boolean help) Sets whether the new instance of LocatorLauncher will be used to output help information for either a specific command, or for using LocatorLauncher in general.
LocatorLauncher.Builder	setHostnameForClients(java.lang.String hostnameForClients) Sets the hostname used by clients to lookup the Locator.
LocatorLauncher.Builder	setMemberName(java.lang.String memberName) Sets the member name of the Locator in GemFire.
LocatorLauncher.Builder	setPid(java.lang.Integer pid) Sets the process ID (PID) of the running Locator indicated by the user as an argument to the LocatorLauncher.
LocatorLauncher.Builder	setPort(java.lang.Integer port) Sets the port number used by the Locator to listen for client requests.
LocatorLauncher.Builder	setRedirectOutput(java.lang.Boolean redirectOutput) Sets whether the new instance of LocatorLauncher will redirect output to system logs when starting a Locator.
LocatorLauncher.Builder	setWorkingDirectory(java.lang.String workingDirectory) Sets the working directory in which the Locator will be ran.
protected void	validate() Validates the configuration settings and properties of this Builder, ensuring that all invariants have been met.
protected void	validateOnStart() Validates the arguments passed to the Builder when the 'start' command has been issued.
protected void	validateOnStatus() Validates the arguments passed to the Builder when the 'status' command has been issued.
protected void	validateOnStop() Validates the arguments passed to the Builder when the 'stop' command has been issued.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_COMMAND

protected static final LocatorLauncher.Command DEFAULT_COMMAND

Constructor Detail

Builder

public Builder()

Default constructor used to create an instance of the Builder class for programmatical access.

Builder

public Builder(java.lang.String... args)

Constructor used to create and configure an instance of the Builder class with the specified arguments, often passed from the command-line when launching an instance of this class from the command-line using the Java launcher.

Parameters:

args - the array of arguments used to configure the Builder.

Method Detail

parseArguments

protected void parseArguments(java.lang.String... args)

Parses an array of arguments to configure this Builder with the intent of constructing a Locator launcher to invoke a Locator. This method is called to parse the arguments specified by the user on the command-line.

Parameters:

args - the array of arguments used to configure this Builder and create an instance of LocatorLauncher.

parseCommand

protected void parseCommand(java.lang.String... args)

Iterates the list of arguments in search of the target Locator launcher command.

Parameters:

args - an array of arguments from which to search for the Locator launcher command.

See Also:

LocatorLauncher.Command.valueOfName(String), parseArguments(String...)

parseMemberName

protected void parseMemberName(java.lang.String[] args)

Iterates the list of arguments in search of the Locator's GemFire member name. If the argument does not start with '-' or is not the name of a Locator launcher command, then the value is presumed to be the member name for the Locator in GemFire.

Parameters:

args - the array of arguments from which to search for the Locator's member name in GemFire.

See Also:

LocatorLauncher.Command.isCommand(String), parseArguments(String...)

getCommand

public LocatorLauncher.Command getCommand()

Gets the Locator launcher command used during the invocation of the LocatorLauncher.

Returns:

the Locator launcher command used to invoke (run) the LocatorLauncher class.

See Also:

setCommand(org.apache.geode.distributed.LocatorLauncher.Command), LocatorLauncher.Command

setCommand

public LocatorLauncher.Builder setCommand(LocatorLauncher.Command command)

Sets the Locator launcher command used during the invocation of the LocatorLauncher

Parameters:

command - the targeted Locator launcher command used during the invocation (run) of LocatorLauncher.

Returns:

this Builder instance.

See Also:

getCommand(), LocatorLauncher.Command

getDebug

public java.lang.Boolean getDebug()

Determines whether the new instance of the LocatorLauncher will be set to debug mode.

Returns:

a boolean value indicating whether debug mode is enabled or disabled.

See Also:

setDebug(Boolean)

setDebug

public LocatorLauncher.Builder setDebug(java.lang.Boolean debug)

Sets whether the new instance of the LocatorLauncher will be set to debug mode.

Parameters:

debug - a boolean value indicating whether debug mode is to be enabled or disabled.

Returns:

this Builder instance.

See Also:

getHelp()

getDistributedSystemProperties

public java.util.Properties getDistributedSystemProperties()

Gets the GemFire Distributed System (cluster) Properties configuration.

Returns:

a Properties object containing configuration settings for the GemFire Distributed System (cluster).

See Also:

Properties

getForce

public java.lang.Boolean getForce()

Gets the boolean value used by the Locator to determine if it should overwrite the PID file if it already exists.

Returns:

the boolean value specifying whether or not to overwrite the PID file if it already exists.

See Also:

LocalProcessLauncher, setForce(Boolean)

setForce

public LocatorLauncher.Builder setForce(java.lang.Boolean force)

Sets the boolean value used by the Locator to determine if it should overwrite the PID file if it already exists.

Parameters:

force - a boolean value indicating whether to overwrite the PID file when it already exists.

Returns:

this Builder instance.

See Also:

LocalProcessLauncher, getForce()

getHelp

public java.lang.Boolean getHelp()

Determines whether the new instance of LocatorLauncher will be used to output help information for either a specific command, or for using LocatorLauncher in general.

Returns:

a boolean value indicating whether help will be output during the invocation of LocatorLauncher.

See Also:

setHelp(Boolean)

setHelp

public LocatorLauncher.Builder setHelp(java.lang.Boolean help)

Sets whether the new instance of LocatorLauncher will be used to output help information for either a specific command, or for using LocatorLauncher in general.

Parameters:

help - a boolean indicating whether help information is to be displayed during invocation of LocatorLauncher.

Returns:

this Builder instance.

See Also:

getHelp()

getBindAddress

public java.net.InetAddress getBindAddress()

Gets the IP address to which the Locator has bound itself listening for client requests.

Returns:

an InetAddress with the IP address or hostname on which the Locator is bound and listening.

See Also:

setBindAddress(String), InetAddress

setBindAddress

public LocatorLauncher.Builder setBindAddress(java.lang.String bindAddress)

Sets the IP address as an java.net.InetAddress to which the Locator has bound itself listening for client requests.

Parameters:

bindAddress - the InetAddress with the IP address or hostname on which the Locator is bound and listening.

Returns:

this Builder instance.

Throws:

java.lang.IllegalArgumentException - wrapping the UnknownHostException if the IP address or hostname for the bind address is unknown.

See Also:

getBindAddress(), InetAddress

getHostnameForClients

public java.lang.String getHostnameForClients()

Gets the hostname used by clients to lookup the Locator.

Returns:

a String indicating the hostname Locator binding used in client lookups.

See Also:

setHostnameForClients(String)

setHostnameForClients

public LocatorLauncher.Builder setHostnameForClients(java.lang.String hostnameForClients)

Sets the hostname used by clients to lookup the Locator.

Parameters:

hostnameForClients - a String indicating the hostname Locator binding used in client lookups.

Returns:

this Builder instance.

Throws:

java.lang.IllegalArgumentException - if the hostname was not specified (is blank or empty), such as when the --hostname-for-clients command-line option may have been specified without any argument.

See Also:

getHostnameForClients()

getMemberName

public java.lang.String getMemberName()

Gets the member name of this Locator in GemFire.

Returns:

a String indicating the member name of this Locator in GemFire.

See Also:

setMemberName(String)

setMemberName

public LocatorLauncher.Builder setMemberName(java.lang.String memberName)

Sets the member name of the Locator in GemFire.

Parameters:

memberName - a String indicating the member name of this Locator in GemFire.

Returns:

this Builder instance.

Throws:

java.lang.IllegalArgumentException - if the member name is invalid.

See Also:

getMemberName()

getPid

public java.lang.Integer getPid()

Gets the process ID (PID) of the running Locator indicated by the user as an argument to the LocatorLauncher. This PID is used by the Locator launcher to determine the Locator's status, or invoke shutdown on the Locator.

Returns:

a user specified Integer value indicating the process ID of the running Locator.

See Also:

setPid(Integer)

setPid

public LocatorLauncher.Builder setPid(java.lang.Integer pid)

Sets the process ID (PID) of the running Locator indicated by the user as an argument to the LocatorLauncher. This PID will be used by the Locator launcher to determine the Locator's status, or invoke shutdown on the Locator.

Parameters:

pid - a user specified Integer value indicating the process ID of the running Locator.

Returns:

this Builder instance.

Throws:

java.lang.IllegalArgumentException - if the process ID (PID) is not valid (greater than zero if not null).

See Also:

getPid()

getPort

public java.lang.Integer getPort()

Gets the port number used by the Locator to listen for client requests. If the port was not specified, then the default Locator port (10334) is returned.

Returns:

the specified Locator port or the default port if unspecified.

See Also:

setPort(Integer)

setPort

public LocatorLauncher.Builder setPort(java.lang.Integer port)

Sets the port number used by the Locator to listen for client requests. The port number must be between 1 and 65535 inclusive.

Parameters:

port - an Integer value indicating the port used by the Locator to listen for client requests.

Returns:

this Builder instance.

Throws:

java.lang.IllegalArgumentException - if the port number is not valid.

See Also:

getPort()

getRedirectOutput

public java.lang.Boolean getRedirectOutput()

Determines whether the new instance of LocatorLauncher will redirect output to system logs when starting a Locator.

Returns:

a boolean value indicating if output will be redirected to system logs when starting a Locator

See Also:

setRedirectOutput(Boolean)

setRedirectOutput

public LocatorLauncher.Builder setRedirectOutput(java.lang.Boolean redirectOutput)

Sets whether the new instance of LocatorLauncher will redirect output to system logs when starting a Locator.

Parameters:

redirectOutput - a boolean value indicating if output will be redirected to system logs when starting a Locator.

Returns:

this Builder instance.

See Also:

getRedirectOutput()

getWorkingDirectory

public java.lang.String getWorkingDirectory()

Gets the working directory pathname in which the Locator will be ran. If the directory is unspecified, then working directory defaults to the current directory.

Returns:

a String indicating the working directory pathname.

See Also:

setWorkingDirectory(String)

setWorkingDirectory

public LocatorLauncher.Builder setWorkingDirectory(java.lang.String workingDirectory)

Sets the working directory in which the Locator will be ran. This also the directory in which all Locator files (such as log and license files) will be written. If the directory is unspecified, then the working directory defaults to the current directory.

Parameters:

workingDirectory - a String indicating the pathname of the directory in which the Locator will be ran.

Returns:

this Builder instance.

Throws:

java.lang.IllegalArgumentException - wrapping a FileNotFoundException if the working directory pathname cannot be found.

See Also:

getWorkingDirectory(), FileNotFoundException

set

public LocatorLauncher.Builder set(java.lang.String propertyName,
                                   java.lang.String propertyValue)

Sets a GemFire Distributed System Property.

Parameters:

propertyName - a String indicating the name of the GemFire Distributed System property as described in ConfigurationProperties

propertyValue - a String value for the GemFire Distributed System property.

Returns:

this Builder instance.

validate

protected void validate()

Validates the configuration settings and properties of this Builder, ensuring that all invariants have been met. Currently, the only invariant constraining the Builder is that the user must specify the member name for the Locator in the GemFire distributed system as a command-line argument, or by setting the memberName property programmatically using the corresponding setter method. If the member name is not given, then the user must have specified the pathname to the gemfire.properties file before validate is called. It is then assumed, but not further validated, that the user has specified the Locator's member name in the properties file.

Throws:

java.lang.IllegalStateException - if the Builder is not properly configured.

validateOnStart

protected void validateOnStart()

Validates the arguments passed to the Builder when the 'start' command has been issued.

See Also:

LocatorLauncher.Command.START

validateOnStatus

protected void validateOnStatus()

Validates the arguments passed to the Builder when the 'status' command has been issued.

See Also:

LocatorLauncher.Command.STATUS

validateOnStop

protected void validateOnStop()

Validates the arguments passed to the Builder when the 'stop' command has been issued.

See Also:

LocatorLauncher.Command.STOP

build

public LocatorLauncher build()

Validates the Builder configuration settings and then constructs an instance of the LocatorLauncher class to invoke operations on a GemFire Locator.

Returns:

a newly constructed instance of LocatorLauncher configured with this Builder.

See Also:

validate(), LocatorLauncher