Package hudson.remoting

Class FileSystemJarCache

java.lang.Object

hudson.remoting.JarCache

hudson.remoting.JarCacheSupport

hudson.remoting.FileSystemJarCache

public class FileSystemJarCache
extends JarCacheSupport

JarCache that stores files in a single directory.

Since:

2.24

Author:

Kohsuke Kawaguchi

Field Summary

Fields

Modifier and Type	Field	Description
File	rootDir

Fields inherited from class hudson.remoting.JarCache

DEFAULT_NOWS_JAR_CACHE_LOCATION

Constructor Summary

Constructors

Constructor	Description
FileSystemJarCache(File rootDir, boolean touch)

Method Summary

Modifier and Type	Method	Description
protected URL	lookInCache(Channel channel, long sum1, long sum2)	Look up the local cache and return URL if found.
protected URL	retrieve(Channel channel, long sum1, long sum2)	Retrieve the jar file from the given JarLoader, store it, then return the URL to that jar.
String	toString()

Methods inherited from class hudson.remoting.JarCacheSupport

getJarLoader, resolve

Methods inherited from class java.lang.Object

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

Field Detail

rootDir

public final File rootDir

Constructor Detail

FileSystemJarCache

public FileSystemJarCache(@NonNull
                          File rootDir,
                          boolean touch)

Parameters:

rootDir - Root directory.

touch - True to touch the cached jar file that's used. This enables external LRU based cache eviction at the expense of increased I/O.

Throws:

IllegalArgumentException - Root directory is null or not writable.

Method Detail

toString

public String toString()

Overrides:

toString in class Object

lookInCache

protected URL lookInCache(Channel channel,
                          long sum1,
                          long sum2)
                   throws IOException,
                          InterruptedException

Description copied from class: JarCacheSupport

Look up the local cache and return URL if found. Otherwise null (which will trigger a remote retrieval.)

Specified by:

lookInCache in class JarCacheSupport

Throws:

IOException

InterruptedException

retrieve

protected URL retrieve(Channel channel,
                       long sum1,
                       long sum2)
                throws IOException,
                       InterruptedException

Description copied from class: JarCacheSupport

Retrieve the jar file from the given JarLoader, store it, then return the URL to that jar.

Specified by:

retrieve in class JarCacheSupport

Returns:

must not be null

Throws:

IOException

InterruptedException