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%% This Source Code Form is subject to the terms of the Mozilla Public
%% License, v. 2.0. If a copy of the MPL was not distributed with this
%% file, You can obtain one at https://mozilla.org/MPL/2.0/.
%%
%% Copyright (c) 2007-2020 VMware, Inc. or its affiliates. All rights reserved.
%%
-module(rabbit_ha_test_producer).
-export([await_response/1, start/6, create/5, create/6]).
-include_lib("amqp_client/include/amqp_client.hrl").
await_response(ProducerPid) ->
error_logger:info_msg("waiting for producer pid ~p~n", [ProducerPid]),
case receive {ProducerPid, Response} -> Response end of
ok -> ok;
{error, _} = Else -> exit(Else);
Else -> exit({weird_response, Else})
end.
create(Channel, Queue, TestPid, Confirm, MsgsToSend) ->
create(Channel, Queue, TestPid, Confirm, MsgsToSend, acks).
create(Channel, Queue, TestPid, Confirm, MsgsToSend, Mode) ->
AckNackMsgs = case Mode of
acks -> {ok, {error, received_nacks}};
nacks -> {{error, received_acks}, ok}
end,
ProducerPid = spawn_link(?MODULE, start, [Channel, Queue, TestPid,
Confirm, MsgsToSend, AckNackMsgs]),
receive
{ProducerPid, started} -> ProducerPid
end.
start(Channel, Queue, TestPid, Confirm, MsgsToSend, AckNackMsgs) ->
ConfirmState =
case Confirm of
true -> amqp_channel:register_confirm_handler(Channel, self()),
#'confirm.select_ok'{} =
amqp_channel:call(Channel, #'confirm.select'{}),
gb_trees:empty();
false -> none
end,
TestPid ! {self(), started},
error_logger:info_msg("publishing ~w msgs on ~p~n", [MsgsToSend, Channel]),
producer(Channel, Queue, TestPid, ConfirmState, MsgsToSend, AckNackMsgs).
%%
%% Private API
%%
producer(_Channel, _Queue, TestPid, none, 0, _AckNackMsgs) ->
TestPid ! {self(), ok};
producer(Channel, _Queue, TestPid, ConfirmState, 0, {AckMsg, NackMsg}) ->
error_logger:info_msg("awaiting confirms on channel ~p~n", [Channel]),
Msg = case drain_confirms(none, ConfirmState) of
%% No acks or nacks
acks -> AckMsg;
nacks -> NackMsg;
mix -> {error, received_both_acks_and_nacks};
{Nacks, CS} -> {error, {missing_confirms, Nacks,
lists:sort(gb_trees:keys(CS))}}
end,
TestPid ! {self(), Msg};
producer(Channel, Queue, TestPid, ConfirmState, MsgsToSend, AckNackMsgs) ->
Method = #'basic.publish'{exchange = <<"">>,
routing_key = Queue,
mandatory = false,
immediate = false},
ConfirmState1 = maybe_record_confirm(ConfirmState, Channel, MsgsToSend),
amqp_channel:call(Channel, Method,
#amqp_msg{props = #'P_basic'{delivery_mode = 2},
payload = list_to_binary(
integer_to_list(MsgsToSend))}),
producer(Channel, Queue, TestPid, ConfirmState1, MsgsToSend - 1, AckNackMsgs).
maybe_record_confirm(none, _, _) ->
none;
maybe_record_confirm(ConfirmState, Channel, MsgsToSend) ->
SeqNo = amqp_channel:next_publish_seqno(Channel),
gb_trees:insert(SeqNo, MsgsToSend, ConfirmState).
drain_confirms(Collected, ConfirmState) ->
case gb_trees:is_empty(ConfirmState) of
true -> Collected;
false -> receive
#'basic.ack'{delivery_tag = DeliveryTag,
multiple = IsMulti} ->
Collected1 = case Collected of
none -> acks;
acks -> acks;
nacks -> mix;
mix -> mix
end,
drain_confirms(Collected1,
delete_confirms(DeliveryTag, IsMulti,
ConfirmState));
#'basic.nack'{delivery_tag = DeliveryTag,
multiple = IsMulti} ->
Collected1 = case Collected of
none -> nacks;
nacks -> nacks;
acks -> mix;
mix -> mix
end,
drain_confirms(Collected1,
delete_confirms(DeliveryTag, IsMulti,
ConfirmState))
after
60000 -> {Collected, ConfirmState}
end
end.
delete_confirms(DeliveryTag, false, ConfirmState) ->
gb_trees:delete(DeliveryTag, ConfirmState);
delete_confirms(DeliveryTag, true, ConfirmState) ->
multi_confirm(DeliveryTag, ConfirmState).
multi_confirm(DeliveryTag, ConfirmState) ->
case gb_trees:is_empty(ConfirmState) of
true -> ConfirmState;
false -> {Key, _, ConfirmState1} = gb_trees:take_smallest(ConfirmState),
case Key =< DeliveryTag of
true -> multi_confirm(DeliveryTag, ConfirmState1);
false -> ConfirmState
end
end.
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