jenkins.model

Class RunIdMigrator

java.lang.Object

jenkins.model.RunIdMigrator

@Restricted(value=org.kohsuke.accmod.restrictions.NoExternalUse.class)
public final class RunIdMigrator
extends Object

Converts legacy builds directories to the current format. There would be one instance associated with each Job, to retain ID → build# mapping. The Job.getBuildDir() is passed to every method call (rather than being cached) in case it is moved.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RunIdMigrator.UnmigrationInstruction Expose unmigration instruction to the user.

Constructor Summary

Constructors

Constructor and Description
RunIdMigrator()

Method Summary

Modifier and Type	Method and Description
void	created(File dir) Called when a job is first created.
void	delete(File dir, String id) Delete the record of a build.
int	findNumber(String id) Look up a historical run by ID.
static void	main(String... args) Reverses the migration, in case you want to revert to the older format.
boolean	migrate(File dir, File jenkinsHome) Perform one-time migration if this has not been done already.

Methods inherited from class java.lang.Object

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

Constructor Detail

RunIdMigrator

public RunIdMigrator()

Method Detail

created

public void created(File dir)

Called when a job is first created. Just saves an empty marker indicating that this job needs no migration.

Parameters:

dir - as in Job.getBuildDir()

migrate

public boolean migrate(File dir,
                       @CheckForNull
                       File jenkinsHome)

Perform one-time migration if this has not been done already. Where previously there would be a 2014-01-02_03-04-05/build.xml specifying <number>99</number> plus a symlink 99 → 2014-01-02_03-04-05, after migration there will be just 99/build.xml specifying <id>2014-01-02_03-04-05</id> and <timestamp>…</timestamp> according to local time zone at time of migration. Newly created builds are untouched. Does not throw IOException since we make a best effort to migrate but do not consider it fatal to job loading if we cannot.

Parameters:

dir - as in Job.getBuildDir()

jenkinsHome - root directory of Jenkins (for logging only)

Returns:

true if migration was performed

findNumber

public int findNumber(@NonNull
                      String id)

Look up a historical run by ID.

Parameters:

id - a nonnumeric ID which may be a valid Run.getId()

Returns:

the corresponding Run.number, or 0 if unknown

delete

public void delete(File dir,
                   String id)

Delete the record of a build.

Parameters:

dir - as in Job.getBuildDir()

id - a Run.getId()

main

public static void main(String... args)
                 throws Exception

Reverses the migration, in case you want to revert to the older format.

Parameters:

args - one parameter, $JENKINS_HOME

Throws:

Exception