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Package node_manager_fkie :: Module update_thread :: Class UpdateThread
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Class UpdateThread

source code

python_qt_binding.QtCore.QObject --+
                                   |
                  object --+       |
                           |       |
          threading._Verbose --+   |
                               |   |
                threading.Thread --+
                                   |
                                  UpdateThread

A thread to retrieve the state about ROS master from remote discovery node and publish it be sending a QT signal.

Instance Methods
 
__init__(self, monitoruri, masteruri, delayed_exec=0., parent=None)
This constructor should always be called with keyword arguments.		 source code
 
run(self)
Method representing the thread's activity.		 source code

Inherited from threading.Thread: __repr__, daemon, getName, ident, isAlive, isDaemon, is_alive, join, name, setDaemon, setName, start

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __str__, __subclasshook__

Instance Variables
  update_signal = Signal(MasterInfo)
update_signal is a signal, which is emitted, if a new master_discovery_fkie.MasterInfo is retrieved.
  master_errors_signal = Signal(str, list)
master_errors_signal is a signal (masteruri, list of errors), which is emitted, if we get a list with errors from remote master_discovery.
  error_signal = Signal(str, str)
error_signal is a signal (masteruri, error message), which is emitted, if an error while retrieving a master info was occurred.
  timediff_signal = Signal(str, float)
timediff_signal is a signal (masteruri, time difference), which is emitted after the difference of time to the remote host is determined.
Properties

Inherited from object: __class__

Method Details

__init__(self, monitoruri, masteruri, delayed_exec=0., parent=None)
(Constructor)

source code 

This constructor should always be called with keyword arguments. Arguments are:

*group* should be None; reserved for future extension when a ThreadGroup class is implemented.

*target* is the callable object to be invoked by the run() method. Defaults to None, meaning nothing is called.

*name* is the thread name. By default, a unique name is constructed of the form "Thread-N" where N is a small decimal number.

*args* is the argument tuple for the target invocation. Defaults to ().

*kwargs* is a dictionary of keyword arguments for the target invocation. Defaults to {}.

If a subclass overrides the constructor, it must make sure to invoke the base class constructor (Thread.__init__()) before doing anything else to the thread.

Parameters:
  • masteruri (str) - the URI of the remote ROS master
  • monitoruri (str) - the URI of the monitor RPC interface of the master_discovery node
  • delayed_exec (float) - Delay the execution of the request for given seconds.
Overrides: object.__init__

run(self)

source code 

Method representing the thread's activity.

You may override this method in a subclass. The standard run() method invokes the callable object passed to the object's constructor as the target argument, if any, with sequential and keyword arguments taken from the args and kwargs arguments, respectively.

Overrides: threading.Thread.run

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