org.apache.flink.runtime.entrypoint

Class ClusterEntrypointUtils

java.lang.Object

org.apache.flink.runtime.entrypoint.ClusterEntrypointUtils

public final class ClusterEntrypointUtils
extends Object

Utility class for ClusterEntrypoint.

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	LOG

Method Summary

Modifier and Type	Method and Description
static void	configureUncaughtExceptionHandler(org.apache.flink.configuration.Configuration config) Sets the uncaught exception handler for current thread based on configuration.
static DeterminismEnvelope<WorkingDirectory>	createJobManagerWorkingDirectory(org.apache.flink.configuration.Configuration configuration, DeterminismEnvelope<ResourceID> envelopedResourceId) Creates the working directory for the JobManager process.
static DeterminismEnvelope<WorkingDirectory>	createTaskManagerWorkingDirectory(org.apache.flink.configuration.Configuration configuration, DeterminismEnvelope<ResourceID> envelopedResourceId) Creates the working directory for the TaskManager process.
static File	generateJobManagerWorkingDirectoryFile(org.apache.flink.configuration.Configuration configuration, ResourceID resourceId) Generates the working directory File for the JobManager process.
static File	generateTaskManagerWorkingDirectoryFile(org.apache.flink.configuration.Configuration configuration, ResourceID resourceId) Generates the working directory File for the TaskManager process.
static File	generateWorkingDirectoryFile(org.apache.flink.configuration.Configuration configuration, Optional<org.apache.flink.configuration.ConfigOption<String>> workingDirOption, String workingDirectoryName) Generate the working directory from the given configuration.
static int	getPoolSize(org.apache.flink.configuration.Configuration config) Gets and verify the io-executor pool size based on configuration.
static <T> T	parseParametersOrExit(String[] args, ParserResultFactory<T> parserResultFactory, Class<?> mainClass) Parses passed String array using the parameter definitions of the passed ParserResultFactory.
static Optional<File>	tryFindUserLibDirectory() Tries to find the user library directory.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final org.slf4j.Logger LOG

Method Detail

parseParametersOrExit

public static <T> T parseParametersOrExit(String[] args,
                                          ParserResultFactory<T> parserResultFactory,
                                          Class<?> mainClass)

Parses passed String array using the parameter definitions of the passed ParserResultFactory. The method will call System.exit and print the usage information to stdout in case of a parsing error.

Type Parameters:

T - The parsing result type.

Parameters:

args - The String array that shall be parsed.

parserResultFactory - The ParserResultFactory that collects the parameter parsing instructions.

mainClass - The main class initiating the parameter parsing.

Returns:

The parsing result.

tryFindUserLibDirectory

public static Optional<File> tryFindUserLibDirectory()

Tries to find the user library directory.

Returns:

the user library directory if it exits, returns Optional.empty() if there is none

getPoolSize

public static int getPoolSize(org.apache.flink.configuration.Configuration config)

Gets and verify the io-executor pool size based on configuration.

Parameters:

config - The configuration to read.

Returns:

The legal io-executor pool size.

configureUncaughtExceptionHandler

public static void configureUncaughtExceptionHandler(org.apache.flink.configuration.Configuration config)

Sets the uncaught exception handler for current thread based on configuration.

Parameters:

config - the configuration to read.

createTaskManagerWorkingDirectory

public static DeterminismEnvelope<WorkingDirectory> createTaskManagerWorkingDirectory(org.apache.flink.configuration.Configuration configuration,
                                                                                      DeterminismEnvelope<ResourceID> envelopedResourceId)
                                                                               throws IOException

Creates the working directory for the TaskManager process. This method ensures that the working directory exists.

Parameters:

configuration - to extract the required settings from

envelopedResourceId - identifying the TaskManager process

Returns:

working directory

Throws:

IOException - if the working directory could not be created

generateTaskManagerWorkingDirectoryFile

@VisibleForTesting
public static File generateTaskManagerWorkingDirectoryFile(org.apache.flink.configuration.Configuration configuration,
                                                                              ResourceID resourceId)

Generates the working directory File for the TaskManager process. This method does not ensure that the working directory exists.

Parameters:

configuration - to extract the required settings from

resourceId - identifying the TaskManager process

Returns:

working directory file

generateJobManagerWorkingDirectoryFile

@VisibleForTesting
public static File generateJobManagerWorkingDirectoryFile(org.apache.flink.configuration.Configuration configuration,
                                                                             ResourceID resourceId)

Generates the working directory File for the JobManager process. This method does not ensure that the working directory exists.

Parameters:

configuration - to extract the required settings from

resourceId - identifying the JobManager process

Returns:

working directory file

generateWorkingDirectoryFile

public static File generateWorkingDirectoryFile(org.apache.flink.configuration.Configuration configuration,
                                                Optional<org.apache.flink.configuration.ConfigOption<String>> workingDirOption,
                                                String workingDirectoryName)

Generate the working directory from the given configuration. If a working dir option is specified, then this config option will be read first. At last, CoreOptions.TMP_DIRS will be used to extract the working directory base from.

Parameters:

configuration - to extract the working directory from

workingDirOption - optional working dir option

workingDirectoryName - name of the working directory to create

Returns:

working directory

createJobManagerWorkingDirectory

public static DeterminismEnvelope<WorkingDirectory> createJobManagerWorkingDirectory(org.apache.flink.configuration.Configuration configuration,
                                                                                     DeterminismEnvelope<ResourceID> envelopedResourceId)
                                                                              throws IOException

Creates the working directory for the JobManager process. This method ensures that the working diretory exists.

Parameters:

configuration - to extract the required settings from

envelopedResourceId - identifying the TaskManager process

Returns:

working directory

Throws:

IOException - if the working directory could not be created