U M8ca@sddlZddlZddlmZmZddlmZddlmZe e Z eddddgZ dZ d Zd ZGd dde Zdd d ZGdddZGdddeZGdddeZGdddZdS)N)deque namedtuple)accepts_kwargs) EVENT_ALIASESNodeListfirstmiddlelastc@seZdZddZdS)rcCs4t|j}t|j}t|j}t|||}|SN)copyrrr r)selfZ first_copyZ middle_copyZ last_copycopiedr2/tmp/pip-unpacked-wheel-ozje0y8b/botocore/hooks.py__copy__s     zNodeList.__copy__N)__name__ __module__ __qualname__rrrrrrscCs&|D]}|ddk r|dSq|S)aFind first non None response in a list of tuples. This function can be used to find the first non None response from handlers connected to an event. This is useful if you are interested in the returned responses from event handlers. Example usage:: print(first_non_none_response([(func1, None), (func2, 'foo'), (func3, 'bar')])) # This will print 'foo' :type responses: list of tuples :param responses: The responses from the ``EventHooks.emit`` method. This is a list of tuples, and each tuple is (handler, handler_response). :param default: If no non-None responses are found, then this default value will be returned. :return: The first non-None response in the list of tuples. r Nr) responsesdefaultresponserrrfirst_non_none_response&s rc@sTeZdZddZdddZdddZdd d Zd d Zdd dZddZ ddZ dS)BaseEventHookscKsgS)aCall all handlers subscribed to an event. :type event_name: str :param event_name: The name of the event to emit. :type **kwargs: dict :param **kwargs: Arbitrary kwargs to pass through to the subscribed handlers. The ``event_name`` will be injected into the kwargs so it's not necesary to add this to **kwargs. :rtype: list of tuples :return: A list of ``(handler_func, handler_func_return_value)`` rr event_namekwargsrrremitCszBaseEventHooks.emitNFcCs|j||||j|ddS)a@Register an event handler for a given event. If a ``unique_id`` is given, the handler will not be registered if a handler with the ``unique_id`` has already been registered. 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Subsequent unregister calls to unique id must specify not to use a counter as well.)r8r;KeyErrorr0popr7 remove_itemr5)rrr%r&r!rLrrrr.^s<  zHierarchicalEmitter.unregistercCs<|}|j}t|j|d<t|j|d<||_|S)Nr7r8) __class____dict__r r7r8)rZ new_instanceZ new_staterrrrs  zHierarchicalEmitter.__copy__)F)NF)NF)F)NNF) rrrr:rArrDr#r(r*rHr.rrrrrr4s$ (  / +r4c@sfeZdZdddZddZddZdd d Zdd d Zdd dZdddZ ddZ ddZ ddZ dS) EventAliaserNcCs$||_|dkrt|_i|_||_dSr )_event_aliasesr_alias_name_cache_emitter)rZ event_emitterZ event_aliasesrrrr:s zEventAliaser.__init__cKs||}|jj|f|Sr )_alias_event_namerVrrrraliased_event_namerrrrs zEventAliaser.emitcKs||}|jj|f|Sr )rWrVrDrXrrrrDs z EventAliaser.emit_until_responseFcCs||}|j||||Sr )rWrVr'rrr%r&r!rYrrrr's zEventAliaser.registercCs||}|j||||Sr )rWrVr)rZrrrr)s zEventAliaser.register_firstcCs||}|j||||Sr )rWrVr+rZrrrr+s zEventAliaser.register_lastcCs||}|j||||Sr )rWrVr.rZrrrr.s zEventAliaser.unregisterc Cs||jkr|j|S|jD]\}}|d}d|krfz||||<Wqtk rbYqYqXn$||kr|d}||||nqd|}t d|d|||j|<|S||j|<|S)N.zChanging event name from z to ) rUrTitemssplitindexr0_replace_subsectionjoinr=r>)rrZold_partnew_partZ event_parts old_partsnew_namerrrrWs*        zEventAliaser._alias_event_namecCsZtt|D]H}|||dkr |||t||kr |g|||t|<dSq dS)Nr)rangelen)rsectionsrbrairrrr_sz EventAliaser._replace_subsectioncCs|t|jt|jSr )rQr rVrTr9rrrrs zEventAliaser.__copy__)N)NF)NF)NF)NNF) rrrr:rrDr'r)r+r.rWr_rrrrrrSs&   & rSc@sTeZdZdZddZefddZddZdd Zd d Z d d Z ddZ ddZ dS)r6ajSpecialized prefix trie that handles wildcards. The prefixes in this case are based on dot separated names so 'foo.bar.baz' is:: foo -> bar -> baz Wildcard support just means that having a key such as 'foo.bar.*.baz' will be matched with a call to ``get_items(key='foo.bar.ANYTHING.baz')``. You can think of this prefix trie as the equivalent as defaultdict(list), except that it can do prefix searches: foo.bar.baz -> A foo.bar -> B foo -> C Calling ``get_items('foo.bar.baz')`` will return [A + B + C], from most specific to least specific. cCsdidd|_dS)N)chunkchildrenvalues)_rootr9rrrr:sz_PrefixTrie.__init__cCs|d}|j}|D]:}||dkrB|did}||d|<|}q|d|}q|ddkrltggg|d<|d||dS)zAdd an item to a key. If a value is already associated with that key, the new value is appended to the list for the key. r[riN)rhrjrirj)r]rkrr?)rkeyvaluerG key_partscurrentpart new_childrrrrMs     z_PrefixTrie.append_itemcCs*t}|d}|j}||||d|S)zCollect all items that are prefixes of key. 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If the key does not exist in the trie, a ``ValueError`` will be raised. r[r)r^N)r]rk _remove_item)rrlrmrnrorrrrP[s z_PrefixTrie.remove_itemcCs|dkr dS|t|kr|d||}|dk r|||||d|t|dkr|d}||jkrv|j|n.||jkr|j|n||jkr|j||ds|ds|d||=ntdd|dS)Nrir rjzkey is not in trie: r[) rer;rzrremoverr r0r`)rrxrnrmr^Z next_noderyrrrrzgs"     z_PrefixTrie._remove_itemcCs|}||j}||_|Sr )rQ_recursive_copyrR)rZnew_copyZ copied_attrsrrrrs z_PrefixTrie.__copy__cCsVi}|D]D\}}t|tr.t|||<q t|trH||||<q |||<q |Sr )r\ isinstancerr dictr|)rnodeZ copied_noderlrmrrrr|s   z_PrefixTrie._recursive_copyN) rrr__doc__r:rIrMr<rrrPrzrr|rrrrr6s    r6)N)r logging collectionsrrZbotocore.compatrZbotocore.utilsr getLoggerrr=Z _NodeListrJrIrKrrrr4rSr6rrrr s"    Qi