Package hudson.slaves

Class SlaveComputer

java.lang.Object
hudson.model.AbstractModelObject
hudson.model.Actionable
hudson.model.Computer
hudson.slaves.SlaveComputer
All Implemented Interfaces:
ExtensionPoint, DescriptorByNameOwner, ExecutorListener, ModelObject, SearchableModelObject, SearchItem, AccessControlled, ModelObjectWithContextMenu, HasWidgets, org.kohsuke.stapler.StaplerProxy
Direct Known Subclasses:
AbstractCloudComputer
public class SlaveComputer extends Computer
Computer for Slaves.
Author:
Kohsuke Kawaguchi

  • Field Details

    • ALLOW_UNSUPPORTED_REMOTING_VERSIONS

      @Restricted(org.kohsuke.accmod.restrictions.NoExternalUse.class) public static boolean ALLOW_UNSUPPORTED_REMOTING_VERSIONS
      Escape hatch for allowing connections from agents with unsupported Remoting versions.

  • Constructor Details

    • SlaveComputer

      public SlaveComputer(Slave slave)

  • Method Details

    • isAcceptingTasks

      @OverrideMustInvoke public boolean isAcceptingTasks()
      Description copied from class: Computer
      Returns true if the computer is accepting tasks. Needed to allow agents programmatic suspension of task scheduling that does not overlap with being offline.
      Overrides:
      isAcceptingTasks in class Computer
      Returns:
      true if the computer is accepting tasks
      See Also:

    • getJnlpMac

      public String getJnlpMac()
      Since:
      1.498

    • setAcceptingTasks

      public void setAcceptingTasks(boolean acceptingTasks)
      Allows suspension of tasks being accepted by the agent computer. While this could be called by a ComputerLauncher or a RetentionStrategy, such usage can result in fights between multiple actors calling setting differential values. A better approach is to override RetentionStrategy.isAcceptingTasks(hudson.model.Computer) if the RetentionStrategy needs to control availability.
      Parameters:
      acceptingTasks - true if the agent can accept tasks.

    • isUnix

      public Boolean isUnix()
      Description copied from class: Computer
      True if this computer is a Unix machine (as opposed to Windows machine).
      Specified by:
      isUnix in class Computer
      Returns:
      null if the computer is disconnected and therefore we don't know whether it is Unix or not.

    • getNode

      @CheckForNull public Slave getNode()
      Description copied from class: Computer
      Returns the Node that this computer represents.
      Overrides:
      getNode in class Computer
      Returns:
      null if the configuration has changed and the node is removed, yet the corresponding Computer is not yet gone.

    • getListener

      @NonNull public TaskListener getListener()
      Offers a way to write to the log file for this agent.
      Since:
      2.9

    • getIconClassName

      public String getIconClassName()
      Description copied from class: Computer
      Returns the class name that will be used to lookup the icon. This class name will be added as a class tag to the html img tags where the icon should show up followed by a size specifier given by Icon.toNormalizedIconSizeClass(String) The conversion of class tag to src tag is registered through IconSet.addIcon(Icon) It is both the recommended and default implementation to serve different icons based on Computer.isOffline()
      Overrides:
      getIconClassName in class Computer
      See Also:

    • isJnlpAgent

      @Deprecated public boolean isJnlpAgent()
      Deprecated.
      since 2008-05-20.
      Description copied from class: Computer
      Returns true if this computer is supposed to be launched via inbound protocol.
      Overrides:
      isJnlpAgent in class Computer

    • isLaunchSupported

      public boolean isLaunchSupported()
      Description copied from class: Computer
      Returns true if this computer can be launched by Hudson proactively and automatically.

      For example, inbound agents return false from this, because the launch process needs to be initiated from the agent side.

      Overrides:
      isLaunchSupported in class Computer

    • getLauncher

      public ComputerLauncher getLauncher()
      Return the ComputerLauncher for this SlaveComputer.
      Since:
      1.312

    • getDelegatedLauncher

      public ComputerLauncher getDelegatedLauncher()
      Return the ComputerLauncher for this SlaveComputer, strips off any DelegatingComputerLaunchers or ComputerLauncherFilters.
      Since:
      2.83

    • _connect

      protected Future<?> _connect(boolean forceReconnect)
      Description copied from class: Computer
      Allows implementing-classes to provide an implementation for the connect method.

      If already connected or if this computer doesn't support proactive launching, no-op. This method may return immediately while the launch operation happens asynchronously.

      Specified by:
      _connect in class Computer
      Parameters:
      forceReconnect - If true and a connect activity is already in progress, it will be cancelled and the new one will be started. If false, and a connect activity is already in progress, this method will do nothing and just return the pending connection operation.
      Returns:
      A Future representing pending completion of the task. The 'completion' includes both a successful completion and a non-successful completion (such distinction typically doesn't make much sense because as soon as Computer is connected it can be disconnected by some other threads.)
      See Also:

    • taskAccepted

      public void taskAccepted(Executor executor, Queue.Task task)
      Description copied from interface: ExecutorListener
      Called whenever a task is accepted by an executor.
      Parameters:
      executor - The executor.
      task - The task.

    • taskStarted

      public void taskStarted(Executor executor, Queue.Task task)
      Description copied from interface: ExecutorListener
      Called whenever a task is started by an executor.
      Parameters:
      executor - The executor.
      task - The task.

    • taskCompleted

      public void taskCompleted(Executor executor, Queue.Task task, long durationMS)
      Description copied from interface: ExecutorListener
      Called whenever a task is completed without any problems by an executor.
      Parameters:
      executor - The executor.
      task - The task.
      durationMS - The number of milliseconds that the task took to complete.

    • taskCompletedWithProblems

      public void taskCompletedWithProblems(Executor executor, Queue.Task task, long durationMS, Throwable problems)
      Description copied from interface: ExecutorListener
      Called whenever a task is completed with some problems by an executor.
      Parameters:
      executor - The executor.
      task - The task.
      durationMS - The number of milliseconds that the task took to complete.
      problems - The exception that was thrown.

    • isConnecting

      public boolean isConnecting()
      Description copied from class: Computer
      Is a Computer.connect(boolean) operation in progress?
      Specified by:
      isConnecting in class Computer

    • openLogFile

      public OutputStream openLogFile()

    • setChannel

      public void setChannel(@NonNull InputStream in, @NonNull OutputStream out, @NonNull TaskListener taskListener, @CheckForNull hudson.remoting.Channel.Listener listener) throws IOException, InterruptedException
      Creates a Channel from the given stream and sets that to this agent. Same as setChannel(InputStream, OutputStream, OutputStream, Channel.Listener), but for TaskListener.
      Throws:
      IOException
      InterruptedException

    • setChannel

      public void setChannel(@NonNull InputStream in, @NonNull OutputStream out, @CheckForNull OutputStream launchLog, @CheckForNull hudson.remoting.Channel.Listener listener) throws IOException, InterruptedException
      Creates a Channel from the given stream and sets that to this agent.
      Parameters:
      in - Stream connected to the remote agent. It's the caller's responsibility to do buffering on this stream, if that's necessary.
      out - Stream connected to the remote peer. It's the caller's responsibility to do buffering on this stream, if that's necessary.
      launchLog - If non-null, receive the portion of data in is before the data goes into the "binary mode". This is useful when the established communication channel might include some data that might be useful for debugging/trouble-shooting.
      listener - Gets a notification when the channel closes, to perform clean up. Can be null. By the time this method is called, the cause of the termination is reported to the user, so the implementation of the listener doesn't need to do that again.
      Throws:
      IOException
      InterruptedException

    • setChannel

      @Restricted(org.kohsuke.accmod.restrictions.Beta.class) public void setChannel(@NonNull hudson.remoting.ChannelBuilder cb, @NonNull hudson.remoting.CommandTransport commandTransport, @CheckForNull hudson.remoting.Channel.Listener listener) throws IOException, InterruptedException
      Creates a Channel from the given Channel Builder and Command Transport. This method can be used to allow ComputerLaunchers to create channels not based on I/O streams.
      Parameters:
      cb - Channel Builder. To print launch logs this channel builder should have a Header Stream defined (see ChannelBuilder.getHeaderStream()) in this argument or by one of ChannelConfigurators.
      commandTransport - Command Transport
      listener - Gets a notification when the channel closes, to perform clean up. Can be null. By the time this method is called, the cause of the termination is reported to the user, so the implementation of the listener doesn't need to do that again.
      Throws:
      IOException
      InterruptedException
      Since:
      2.127

    • getClassLoadingCount

      @CheckReturnValue public int getClassLoadingCount() throws IOException, InterruptedException
      Shows Channel.classLoadingCount.
      Returns:
      Requested value or -1 if the agent is offline.
      Throws:
      IOException
      InterruptedException
      Since:
      1.495

    • getClassLoadingPrefetchCacheCount

      @CheckReturnValue public int getClassLoadingPrefetchCacheCount() throws IOException, InterruptedException
      Shows Channel.classLoadingPrefetchCacheCount.
      Returns:
      Requested value or -1 in case that capability is not supported or if the agent is offline.
      Throws:
      IOException
      InterruptedException
      Since:
      1.519

    • getResourceLoadingCount

      @CheckReturnValue public int getResourceLoadingCount() throws IOException, InterruptedException
      Shows Channel.resourceLoadingCount.
      Returns:
      Requested value or -1 if the agent is offline.
      Throws:
      IOException
      InterruptedException
      Since:
      1.495

    • getClassLoadingTime

      @CheckReturnValue public long getClassLoadingTime() throws IOException, InterruptedException
      Shows Channel.classLoadingTime.
      Returns:
      Requested value or -1 if the agent is offline.
      Throws:
      IOException
      InterruptedException
      Since:
      1.495

    • getResourceLoadingTime

      @CheckReturnValue public long getResourceLoadingTime() throws IOException, InterruptedException
      Shows Channel.resourceLoadingTime.
      Returns:
      Requested value or -1 if the agent is offline.
      Throws:
      IOException
      InterruptedException
      Since:
      1.495

    • getAbsoluteRemoteFs

      @CheckForNull public String getAbsoluteRemoteFs()
      Returns the remote FS root absolute path or null if the agent is off-line. The absolute path may change between connections if the connection method does not provide a consistent working directory and the node's remote FS is specified as a relative path.
      Returns:
      the remote FS root absolute path or null if the agent is off-line.
      Since:
      1.606

    • getAbsoluteRemotePath

      @Exported @Restricted(org.kohsuke.accmod.restrictions.DoNotUse.class) @CheckForNull public String getAbsoluteRemotePath()
      Just for restFul api. Returns the remote FS root absolute path or null if the agent is off-line. The absolute path may change between connections if the connection method does not provide a consistent working directory and the node's remote FS is specified as a relative path.
      Returns:
      the remote FS root absolute path or null if the agent is off-line or don't have connect permission.
      Since:
      2.125
      See Also:

    • setChannel

      public void setChannel(@NonNull hudson.remoting.Channel channel, @CheckForNull OutputStream launchLog, @CheckForNull hudson.remoting.Channel.Listener listener) throws IOException, InterruptedException
      Sets up the connection through an existing channel.
      Parameters:
      channel - the channel to use; warning: callers are expected to have called ChannelConfigurator already.
      launchLog - Launch log. If not null, will receive launch log messages
      listener - Channel event listener to be attached (if not null)
      Throws:
      IOException
      InterruptedException
      Since:
      1.444

    • getChannel

      public hudson.remoting.Channel getChannel()
      Description copied from class: Computer
      Gets the channel that can be used to run a program on this computer.
      Specified by:
      getChannel in class Computer
      Returns:
      never null when Computer.isOffline()==false.

    • getDefaultCharset

      public Charset getDefaultCharset()
      Description copied from class: Computer
      Gets the default charset of this computer.
      Specified by:
      getDefaultCharset in class Computer
      Returns:
      never null when Computer.isOffline()==false.

    • getLogRecords

      public List<LogRecord> getLogRecords() throws IOException, InterruptedException
      Description copied from class: Computer
      Gets the logs recorded by this agent.
      Specified by:
      getLogRecords in class Computer
      Throws:
      IOException
      InterruptedException

    • doSubmitDescription

      @Restricted(org.kohsuke.accmod.restrictions.NoExternalUse.class) public void doSubmitDescription(org.kohsuke.stapler.StaplerResponse rsp, @QueryParameter String description) throws IOException
      Inline editing of description
      Throws:
      IOException

    • doDoDisconnect

      public org.kohsuke.stapler.HttpResponse doDoDisconnect(@QueryParameter String offlineMessage)

    • disconnect

      public Future<?> disconnect(OfflineCause cause)
      Description copied from class: Computer
      Disconnect this computer. If this is the built-in node, no-op. This method may return immediately while the launch operation happens asynchronously.
      Overrides:
      disconnect in class Computer
      Parameters:
      cause - Object that identifies the reason the node was disconnected.
      Returns:
      Future to track the asynchronous disconnect operation.
      See Also:

    • doLaunchSlaveAgent

      public void doLaunchSlaveAgent(org.kohsuke.stapler.StaplerRequest req, org.kohsuke.stapler.StaplerResponse rsp) throws IOException
      Description copied from class: Computer
      If Computer.getChannel()==null, attempts to relaunch the agent.
      Specified by:
      doLaunchSlaveAgent in class Computer
      Throws:
      IOException

    • tryReconnect

      public void tryReconnect()

    • getJnlpJars

      @Deprecated public Slave.JnlpJar getJnlpJars(String fileName)
      Deprecated.
      since 2008-08-18. This URL binding is no longer used and moved up directly under to Jenkins, but it's left here for now just in case some old inbound agents request it.
      Serves jar files for inbound agents.

    • doSlaveAgentJnlp

      @WebMethod(name="slave-agent.jnlp") public org.kohsuke.stapler.HttpResponse doSlaveAgentJnlp(org.kohsuke.stapler.StaplerRequest req, org.kohsuke.stapler.StaplerResponse res)

    • doJenkinsAgentJnlp

      @WebMethod(name="jenkins-agent.jnlp") public org.kohsuke.stapler.HttpResponse doJenkinsAgentJnlp(org.kohsuke.stapler.StaplerRequest req, org.kohsuke.stapler.StaplerResponse res)

    • getTarget

      @Restricted(org.kohsuke.accmod.restrictions.NoExternalUse.class) public Object getTarget()
      Specified by:
      getTarget in interface org.kohsuke.stapler.StaplerProxy
      Overrides:
      getTarget in class Computer

    • kill

      protected void kill()
      Description copied from class: Computer
      Called by Jenkins.updateComputerList() to notify Computer that it will be discarded.

      Note that at this point Computer.getNode() returns null.

      Overrides:
      kill in class Computer
      See Also:

    • getRetentionStrategy

      public RetentionStrategy getRetentionStrategy()
      Description copied from class: Computer
      RetentionStrategy associated with this computer.
      Specified by:
      getRetentionStrategy in class Computer
      Returns:
      never null. This method return RetentionStrategy<? super T> where T=this.getClass().

    • setNode

      protected void setNode(Node node)
      Description copied from class: Computer
      Called to notify Computer that its corresponding Node configuration is updated.
      Overrides:
      setNode in class Computer

    • grabLauncher

      protected ComputerLauncher grabLauncher(Node node)
      Grabs a ComputerLauncher out of Node to keep it in this Computer. The returned launcher will be set to launcher and used to carry out the actual launch operation.

      Subtypes that needs to decorate ComputerLauncher can do so by overriding this method. This is useful for SlaveComputers for clouds for example, where one normally needs additional pre-launch step (such as waiting for the provisioned node to become available) before the user specified launch step (like SSH connection) kicks in.

      See Also:

    • getSlaveVersion

      @CheckReturnValue public String getSlaveVersion() throws IOException, InterruptedException
      Get the agent version
      Throws:
      IOException
      InterruptedException

    • getOSDescription

      @CheckReturnValue public String getOSDescription() throws IOException, InterruptedException
      Get the OS description.
      Throws:
      IOException
      InterruptedException

    • getEnvVarsFull

      @CheckReturnValue public Map<String,String> getEnvVarsFull() throws IOException, InterruptedException
      Expose real full env vars map from agent for UI presentation
      Throws:
      IOException
      InterruptedException

    • getChannelToMaster

      @Deprecated public static hudson.remoting.VirtualChannel getChannelToMaster()
      Deprecated.
      Use AgentComputerUtil.getChannelToController() instead.
      Obtains a VirtualChannel that allows some computation to be performed on the controller. This method can be called from any thread on the controller, or from agent (more precisely, it only works from the remoting request-handling thread in agents, which means if you've started separate thread on agents, that'll fail.)
      Returns:
      null if the calling thread doesn't have any trace of where its controller is.
      Since:
      1.362

    • getSystemInfoExtensions

      @Restricted(org.kohsuke.accmod.restrictions.DoNotUse.class) @RestrictedSince("2.163") public static List<SlaveSystemInfo> getSystemInfoExtensions()
      Helper method for Jelly.