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"""RemoteNamespace object, for dict style interaction with a remote
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execution kernel."""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2010-2011 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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from functools import wraps
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from IPython.external.decorator import decorator
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def _clear():
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globals().clear()
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@decorator
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def spinfirst(f):
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@wraps(f)
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def spun_method(self, *args, **kwargs):
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self.spin()
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return f(self, *args, **kwargs)
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return spun_method
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@decorator
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def myblock(f, self, *args, **kwargs):
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block = self.client.block
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self.client.block = self.block
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ret = f(self, *args, **kwargs)
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self.client.block = block
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return ret
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class RemoteNamespace(object):
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"""A RemoteNamespace object, providing dictionary
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access to an engine via an IPython.zmq.client object.
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"""
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client = None
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queue = None
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id = None
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block = False
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def __init__(self, client, id):
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self.client = client
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self.id = id
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self.block = client.block # initial state is same as client
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def __repr__(self):
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return "<RemoteNamespace[%i]>"%self.id
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@myblock
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def apply(self, f, *args, **kwargs):
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"""call f(*args, **kwargs) in remote namespace
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This method has no access to the user namespace"""
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return self.client.apply_to(self.id, f, *args, **kwargs)
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@myblock
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def apply_bound(self, f, *args, **kwargs):
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"""call `f(*args, **kwargs)` in remote namespace.
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`f` will have access to the user namespace as globals()."""
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return self.client.apply_bound_to(self.id, f, *args, **kwargs)
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@myblock
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def update(self, ns):
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"""update remote namespace with dict `ns`"""
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return self.client.push(self.id, ns, self.block)
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def get(self, key_s):
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"""get object(s) by `key_s` from remote namespace
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will return one object if it is a key.
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It also takes a list of keys, and will return a list of objects."""
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return self.client.pull(self.id, key_s, self.block)
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push = update
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pull = get
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def __getitem__(self, key):
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return self.get(key)
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def __setitem__(self,key,value):
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self.update({key:value})
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def clear(self):
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"""clear the remote namespace"""
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return self.client.apply_bound_to(self.id, _clear)
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@decorator
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def withme(self, toapply):
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"""for use as a decorator, this turns a function into
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one that executes remotely."""
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@wraps(toapply)
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def applied(self, *args, **kwargs):
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return self.apply_bound(self, toapply, *args, **kwargs)
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return applied
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