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%% The contents of this file are subject to the Mozilla Public License
%% Version 1.1 (the "License"); you may not use this file except in
%% compliance with the License. You may obtain a copy of the License at
%% http://www.mozilla.org/MPL/
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
%% License for the specific language governing rights and limitations
%% under the License.
%%
%% The Original Code is RabbitMQ.
%%
%% The Initial Developers of the Original Code are LShift Ltd,
%% Cohesive Financial Technologies LLC, and Rabbit Technologies Ltd.
%%
%% Portions created before 22-Nov-2008 00:00:00 GMT by LShift Ltd,
%% Cohesive Financial Technologies LLC, or Rabbit Technologies Ltd
%% are Copyright (C) 2007-2008 LShift Ltd, Cohesive Financial
%% Technologies LLC, and Rabbit Technologies Ltd.
%%
%% Portions created by LShift Ltd are Copyright (C) 2007-2009 LShift
%% Ltd. Portions created by Cohesive Financial Technologies LLC are
%% Copyright (C) 2007-2009 Cohesive Financial Technologies
%% LLC. Portions created by Rabbit Technologies Ltd are Copyright
%% (C) 2007-2009 Rabbit Technologies Ltd.
%%
%% All Rights Reserved.
%%
%% Contributor(s): ______________________________________.
%%
-module(rabbit_basic).
-include("rabbit.hrl").
-include("rabbit_framing.hrl").
-export([publish/1, message/4, properties/1, delivery/4]).
-export([publish/4, publish/7]).
-export([build_content/2, from_content/1]).
%%----------------------------------------------------------------------------
-ifdef(use_specs).
-type(properties_input() :: (amqp_properties() | [{atom(), any()}])).
-type(publish_result() :: ({ok, routing_result(), [pid()]} | not_found())).
-spec(publish/1 :: (delivery()) -> publish_result()).
-spec(delivery/4 :: (boolean(), boolean(), maybe(txn()), message()) ->
delivery()).
-spec(message/4 :: (exchange_name(), routing_key(), properties_input(),
binary()) -> message()).
-spec(properties/1 :: (properties_input()) -> amqp_properties()).
-spec(publish/4 :: (exchange_name(), routing_key(), properties_input(),
binary()) -> publish_result()).
-spec(publish/7 :: (exchange_name(), routing_key(), boolean(), boolean(),
maybe(txn()), properties_input(), binary()) ->
publish_result()).
-spec(build_content/2 :: (amqp_properties(), binary()) -> content()).
-spec(from_content/1 :: (content()) -> {amqp_properties(), binary()}).
-endif.
%%----------------------------------------------------------------------------
publish(Delivery = #delivery{
message = #basic_message{exchange_name = ExchangeName}}) ->
case rabbit_exchange:lookup(ExchangeName) of
{ok, X} ->
{RoutingRes, DeliveredQPids} = rabbit_exchange:publish(X, Delivery),
{ok, RoutingRes, DeliveredQPids};
Other ->
Other
end.
delivery(Mandatory, Immediate, Txn, Message) ->
#delivery{mandatory = Mandatory, immediate = Immediate, txn = Txn,
sender = self(), message = Message}.
build_content(Properties, BodyBin) ->
{ClassId, _MethodId} = rabbit_framing:method_id('basic.publish'),
#content{class_id = ClassId,
properties = Properties,
properties_bin = none,
payload_fragments_rev = [BodyBin]}.
from_content(Content) ->
#content{class_id = ClassId,
properties = Props,
payload_fragments_rev = FragmentsRev} =
rabbit_binary_parser:ensure_content_decoded(Content),
{ClassId, _MethodId} = rabbit_framing:method_id('basic.publish'),
{Props, list_to_binary(lists:reverse(FragmentsRev))}.
message(ExchangeName, RoutingKeyBin, RawProperties, BodyBin) ->
Properties = properties(RawProperties),
#basic_message{exchange_name = ExchangeName,
routing_key = RoutingKeyBin,
content = build_content(Properties, BodyBin),
persistent_key = none}.
properties(P = #'P_basic'{}) ->
P;
properties(P) when is_list(P) ->
%% Yes, this is O(length(P) * record_info(size, 'P_basic') / 2),
%% i.e. slow. Use the definition of 'P_basic' directly if
%% possible!
lists:foldl(fun ({Key, Value}, Acc) ->
case indexof(record_info(fields, 'P_basic'), Key) of
0 -> throw({unknown_basic_property, Key});
N -> setelement(N + 1, Acc, Value)
end
end, #'P_basic'{}, P).
indexof(L, Element) -> indexof(L, Element, 1).
indexof([], _Element, _N) -> 0;
indexof([Element | _Rest], Element, N) -> N;
indexof([_ | Rest], Element, N) -> indexof(Rest, Element, N + 1).
%% Convenience function, for avoiding round-trips in calls across the
%% erlang distributed network.
publish(ExchangeName, RoutingKeyBin, Properties, BodyBin) ->
publish(ExchangeName, RoutingKeyBin, false, false, none, Properties,
BodyBin).
%% Convenience function, for avoiding round-trips in calls across the
%% erlang distributed network.
publish(ExchangeName, RoutingKeyBin, Mandatory, Immediate, Txn, Properties,
BodyBin) ->
publish(delivery(Mandatory, Immediate, Txn,
message(ExchangeName, RoutingKeyBin,
properties(Properties), BodyBin))).
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