org.apache.slider.core.launch

Class ClasspathConstructor

java.lang.Object

org.apache.slider.core.launch.ClasspathConstructor

public class ClasspathConstructor
extends Object

build a classpath -allows for entries to be injected in front of YARN classpath as well as behind, adds appropriate separators, extraction of local classpath, etc.

Field Summary

Fields

Modifier and Type	Field and Description
static String	CLASS_PATH_SEPARATOR

Constructor Summary

Constructors

Constructor and Description
ClasspathConstructor()

Method Summary

Methods

Modifier and Type	Method and Description
void	addClassDirectory(String pathToDir)
void	addLibDir(String pathToLibDir)
void	addRemoteClasspathEnvVar()
void	append(String path) Append an entry
void	appendAll(Collection<String> paths)
String	buildClasspath()
String	buildLibDir(String pathToLibDir) Build a lib dir path
List<String>	getPathElements() Get a copy of the path list
void	insert(String path) Insert a path at the front of the list.
void	insertAll(Collection<String> paths)
void	insertClassDirectory(String pathToDir)
void	insertLibDir(String pathToLibDir)
void	insertRemoteClasspathEnvVar()
Collection<String>	localJVMClasspath() Get the local JVM classpath split up
Collection<String>	splitClasspath(String localpath) Split a classpath.
String	toString()
List<String>	yarnApplicationClasspath(org.apache.hadoop.conf.Configuration config) Get the list of JARs from the YARN settings

Methods inherited from class java.lang.Object

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

Field Detail

CLASS_PATH_SEPARATOR

public static final String CLASS_PATH_SEPARATOR

See Also:

Constant Field Values

Constructor Detail

ClasspathConstructor

public ClasspathConstructor()

Method Detail

yarnApplicationClasspath

public List<String> yarnApplicationClasspath(org.apache.hadoop.conf.Configuration config)

Get the list of JARs from the YARN settings

Parameters:

config - configuration

toString

public String toString()

Overrides:

toString in class Object

buildClasspath

public String buildClasspath()

getPathElements

public List<String> getPathElements()

Get a copy of the path list

Returns:

the JARs

append

public void append(String path)

Append an entry

Parameters:

path - path

insert

public void insert(String path)

Insert a path at the front of the list. This places it ahead of the standard YARN artifacts

Parameters:

path - path to the JAR. Absolute or relative -on the target system

appendAll

public void appendAll(Collection<String> paths)

insertAll

public void insertAll(Collection<String> paths)

addLibDir

public void addLibDir(String pathToLibDir)

insertLibDir

public void insertLibDir(String pathToLibDir)

addClassDirectory

public void addClassDirectory(String pathToDir)

insertClassDirectory

public void insertClassDirectory(String pathToDir)

addRemoteClasspathEnvVar

public void addRemoteClasspathEnvVar()

insertRemoteClasspathEnvVar

public void insertRemoteClasspathEnvVar()

buildLibDir

public String buildLibDir(String pathToLibDir)

Build a lib dir path

Parameters:

pathToLibDir - path to the directory; may or may not end with a trailing space

Returns:

a path to a lib dir that is compatible with the java classpath

splitClasspath

public Collection<String> splitClasspath(String localpath)

Split a classpath. This uses the local path separator so MUST NOT be used to work with remote classpaths

Parameters:

localpath - local path

Returns:

a splite

localJVMClasspath

public Collection<String> localJVMClasspath()

Get the local JVM classpath split up

Returns:

the list of entries on the JVM classpath env var