org.apache.flink.client.program

Class DefaultPackagedProgramRetriever

java.lang.Object

org.apache.flink.client.program.DefaultPackagedProgramRetriever

All Implemented Interfaces:

PackagedProgramRetriever

public class DefaultPackagedProgramRetriever
extends Object
implements PackagedProgramRetriever

PackageProgramRetrieverImpl is the default implementation of PackagedProgramRetriever that can either retrieve a PackagedProgram from a specific jar, some provided user classpath or the system classpath.

Method Summary

Modifier and Type	Method and Description
static DefaultPackagedProgramRetriever	create(File userLibDir, File jarFile, String jobClassName, String[] programArgs, Configuration configuration) Creates a PackageProgramRetrieverImpl with the given parameters.
static DefaultPackagedProgramRetriever	create(File userLibDir, String jobClassName, String[] programArgs, Configuration configuration) Creates a PackageProgramRetrieverImpl with the given parameters.
PackagedProgram	getPackagedProgram() Retrieve the PackagedProgram.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static DefaultPackagedProgramRetriever create(@Nullable
                                                     File userLibDir,
                                                     @Nullable
                                                     String jobClassName,
                                                     String[] programArgs,
                                                     Configuration configuration)
                                              throws FlinkException

Creates a PackageProgramRetrieverImpl with the given parameters.

Parameters:

userLibDir - The user library directory that is used for generating the user classpath if specified. The system classpath is used if not specified.

jobClassName - The job class that will be used if specified. The classpath is used to detect any main class if not specified.

programArgs - The program arguments.

configuration - The Flink configuration for the given job.

Returns:

The PackageProgramRetrieverImpl that can be used to create a PackagedProgram instance.

Throws:

FlinkException - If something goes wrong during instantiation.

create

public static DefaultPackagedProgramRetriever create(@Nullable
                                                     File userLibDir,
                                                     @Nullable
                                                     File jarFile,
                                                     @Nullable
                                                     String jobClassName,
                                                     String[] programArgs,
                                                     Configuration configuration)
                                              throws FlinkException

Creates a PackageProgramRetrieverImpl with the given parameters.

Parameters:

userLibDir - The user library directory that is used for generating the user classpath if specified. The system classpath is used if not specified.

jarFile - The jar archive expected to contain the job class included; null if the job class is on the system classpath.

jobClassName - The job class to use; if null the user classpath (or, if not set, the system classpath) will be scanned for possible main class.

programArgs - The program arguments.

configuration - The Flink configuration for the given job.

Returns:

The PackageProgramRetrieverImpl that can be used to create a PackagedProgram instance.

Throws:

FlinkException - If something goes wrong during instantiation.

getPackagedProgram

public PackagedProgram getPackagedProgram()
                                   throws FlinkException

Description copied from interface: PackagedProgramRetriever

Retrieve the PackagedProgram.

Specified by:

getPackagedProgram in interface PackagedProgramRetriever

Returns:

the retrieved PackagedProgram.

Throws:

FlinkException - if the PackagedProgram could not be retrieved