Package hudson.lifecycle

Class Lifecycle

java.lang.Object
hudson.lifecycle.Lifecycle
All Implemented Interfaces:
ExtensionPoint
Direct Known Subclasses:
ExitLifecycle, SolarisSMFLifecycle, UnixLifecycle, WindowsServiceLifecycle
public abstract class Lifecycle extends Object implements ExtensionPoint
Provides the capability for starting/stopping/restarting/uninstalling Hudson.

The steps to perform these operations depend on how Hudson is launched, so the concrete instance of this method (which is VM-wide singleton) is discovered by looking up a FQCN from the system property "hudson.lifecycle". (This may be set to a class defined in a plugin, in which case the singleton switches during startup.)

Since:
1.254
Author:
Kohsuke Kawaguchi

  • Constructor Details

    • Lifecycle

      public Lifecycle()

  • Method Details

    • get

      @NonNull public static Lifecycle get()
      Gets the singleton instance.

    • getHudsonWar

      public File getHudsonWar()
      If the location of jenkins.war is known in this life cycle, return it location. Otherwise return null to indicate that it is unknown.

      When a non-null value is returned, Hudson will offer an upgrade UI to a newer version.

    • rewriteHudsonWar

      public void rewriteHudsonWar(File by) throws IOException
      Replaces jenkins.war by the given file.

      On some system, most notably Windows, a file being in use cannot be changed, so rewriting jenkins.war requires some special trick. Override this method to do so.

      Throws:
      IOException

    • canRewriteHudsonWar

      public boolean canRewriteHudsonWar()
      Can rewriteHudsonWar(File) work?

    • restart

      public void restart() throws IOException, InterruptedException
      If this life cycle supports a restart of Hudson, do so. Otherwise, throw UnsupportedOperationException, which is what the default implementation does.

      The restart operation may happen synchronously (in which case this method will never return), or asynchronously (in which case this method will successfully return.)

      Throw an exception if the operation fails unexpectedly.

      Throws:
      IOException
      InterruptedException

    • verifyRestartable

      public void verifyRestartable() throws RestartNotSupportedException
      Can the restart() method restart Hudson?
      Throws:
      RestartNotSupportedException - If the restart is not supported, throw this exception and explain the cause.

    • canRestart

      public boolean canRestart()
      The same as verifyRestartable() except the status is indicated by the return value, not by an exception.

    • onReady

      public void onReady()
      Called when Jenkins startup is finished or when Jenkins has finished reloading its configuration.
      Since:
      2.333

    • onReload

      public void onReload(@NonNull String user, @CheckForNull String remoteAddr)
      Called when Jenkins is reloading its configuration.

      Callers must also send an onReady() notification when Jenkins has finished reloading its configuration.

      Since:
      2.333

    • onStop

      public void onStop(@NonNull String user, @CheckForNull String remoteAddr)
      Called when Jenkins is beginning its shutdown.
      Since:
      2.333

    • onExtendTimeout

      public void onExtendTimeout(long timeout, @NonNull TimeUnit unit)
      Tell the service manager to extend the startup or shutdown timeout. The value specified is a time during which either onExtendTimeout(long, TimeUnit) must be called again or startup/shutdown must complete.
      Parameters:
      timeout - The amount by which to extend the timeout.
      unit - The time unit of the timeout argument.
      Since:
      2.335

    • onStatusUpdate

      public void onStatusUpdate(String status)
      Called when Jenkins service state has changed.
      Parameters:
      status - The status string. This is free-form and can be used for various purposes: general state feedback, completion percentages, human-readable error message, etc.
      Since:
      2.333

    • supportsDynamicLoad

      @Restricted(org.kohsuke.accmod.restrictions.Beta.class) public boolean supportsDynamicLoad()
      Whether PluginManager.dynamicLoad(File) should be supported at all. If not, RestartRequiredException will always be thrown.
      Returns:
      true by default
      Since:
      2.449

    • onBootFailure

      public void onBootFailure(BootFailure problem)
      Called when Jenkins has failed to boot.
      Parameters:
      problem - a boot failure (could be JenkinsReloadFailed)
      Since:
      TODO