Class RemoteCommand
source code
twisted.spread.jelly.Jellyable --+
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twisted.spread.flavors.Serializable --+
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twisted.spread.flavors.Referenceable --+
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RemoteCommand
- Known Subclasses:
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I represent a single command to be run on the slave. I handle the
details of reliably gathering status updates from the slave
(acknowledging each), and (eventually, in a future release) recovering
from interrupted builds. This is the master-side object that is known to
the slave-side buildbot.slave.bot.SlaveBuilder, to which status updates
are sent.
My command should be started by calling .run(), which returns a
Deferred that will fire when the command has finished, or will errback if
an exception is raised.
Typically __init__ or run() will set up self.remote_command to be a
string which corresponds to one of the SlaveCommands registered in the
buildslave, and self.args to a dictionary of arguments that will be
passed to the SlaveCommand instance.
start, remoteUpdate, and remoteComplete are available to be
overridden
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twisted.internet.defer.Deferred
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None
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Inherited from twisted.spread.flavors.Referenceable:
jellyFor,
remoteMessageReceived
Inherited from twisted.spread.flavors.Serializable:
processUniqueID
Inherited from twisted.spread.jelly.Jellyable:
__providedBy__,
getStateFor
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list of one int
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commandCounter = [0]
provides a unique value for each RemoteCommand executed across all
slaves
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Inherited from twisted.spread.flavors.Referenceable:
__implemented__,
__provides__,
perspective
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boolean
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active = False
whether the command is currently running
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__init__(self,
remote_command,
args)
(Constructor)
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- Parameters:
remote_command (string) - remote command to start. This will be passed to buildbot.slave.bot.SlaveBuilder.remote_startCommand
and needs to have been registered slave-side by buildbot.slave.registry.registerSlaveCommandargs (dict) - arguments to send to the remote command
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Tell the slave to start executing the remote command.
- Returns:
twisted.internet.defer.Deferred
- a deferred that will fire when the remote command is done (with
None as the result)
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I am called by the slave's buildbot.slave.bot.SlaveBuilder so I can receive updates
from the running remote command.
- Parameters:
updates (list of [object, int]) - list of updates from the remote command
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Called by the slave's buildbot.slave.bot.SlaveBuilder to notify me the remote
command has finished.
- Parameters:
failure (twisted.python.failure.Failure or None) - Returns: None
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Subclasses can override this.
This is called when the RemoteCommand has finished. 'maybeFailure'
will be None if the command completed normally, or a Failure instance in
one of the following situations:
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the slave was lost before the command was started
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the slave didn't respond to the startCommand message
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the slave raised an exception while starting the command (bad command
name, bad args, OSError from missing executable)
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the slave raised an exception while finishing the command (they send
back a remote_complete message with a Failure payload)
and also (for now):
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slave disconnected while the command was running
This method should do cleanup, like closing log files. It should
normally return the 'failure' argument, so that any exceptions will be
propagated to the Step. If it wants to consume them, return None
instead.
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