Package twisted :: Package internet :: Module app :: Class DependentMultiService
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Class DependentMultiService

_AbstractServiceCollection --+    
                             |    
              Accessor --+   |    
                         |   |    
             Versioned --+   |    
                         |   |    
        ApplicationService --+    
                             |    
                  MultiService --+
                                 |
                                DependentMultiService


I am a MultiService that starts services in insert order, and stops them in the reverse order. The service starts and stops are chained, so be very careful about services that may fail to start or stop.
Method Summary
  __init__(self, serviceName, serviceParent)
  __delattr__(self, k)
(inherited from Accessor)
  __getattr__(self, k)
(inherited from Accessor)
  __getstate__(self, dict)
Get state, adding a version number to it on its way out. (inherited from Versioned)
  __setattr__(self, k, v)
(inherited from Accessor)
  __setstate__(self, state)
(inherited from Versioned)
  addService(self, service)
Add a Service to me. (inherited from MultiService)
  disownServiceParent(self)
Have my parent disown me. (inherited from ApplicationService)
  get_application(self)
(inherited from ApplicationService)
  getServiceNamed(self, serviceName)
Retrieve the named service from this application. (inherited from _AbstractServiceCollection)
  reallyDel(self, k)
*actually* del self.k without incurring side-effects. (inherited from Accessor)
  reallySet(self, k, v)
*actually* set self.k to v without incurring side-effects. (inherited from Accessor)
  removeService(self, service)
Remove a Service from me. (inherited from MultiService)
  set_application(self, application)
(inherited from ApplicationService)
  setApplication(self, application)
(inherited from ApplicationService)
  setServiceParent(self, serviceParent)
Set my parent, which must be a service collection of some kind. (inherited from ApplicationService)
  startService(self)
Start all of my Services.
  stopService(self)
Stop all of my Services.
  upgradeToVersion1(self)
(inherited from ApplicationService)
  versionUpgrade(self)
(internal) Do a version upgrade. (inherited from Versioned)
  _cbAttachServiceNames(self, result, services)
I massage the result of a DeferredList into something that's a bit easier to work with (see stopService's __doc__). (inherited from MultiService)
  _emergencyStopService(self, failure, service)
  _finishStartService(self, res)
  _finishStopService(self, res)
  _rollbackStartedServices(self, failure, service)

Method Details

startService(self)

Start all of my Services.

I return a Deferred that will callback (with no useful result) when all services are started. In the event of a failure, all of the successful services will be stopped (without chained behavior) and I will errback with the first unsuccessful service's failure.

stopService(self)

Stop all of my Services.

I return a Deferred that will callback (with no useful result) when all services are stopped. In the event of a failure, the running services will be stopped (without chained behavior) and I will errback with the first unsuccessful service's failure.

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