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author | Simon MacMullen <simon@rabbitmq.com> | 2013-08-21 15:50:27 +0100 |
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committer | Simon MacMullen <simon@rabbitmq.com> | 2013-08-21 15:50:27 +0100 |
commit | c153e81488594754505bfab34d1409781cb972e9 (patch) | |
tree | 0e2440f385c3b8977bc7109280b5b97cdf7a8416 | |
parent | b78f55bda18f00f5c19eb4c7eea0b247e9767c18 (diff) | |
download | rabbitmq-server-c153e81488594754505bfab34d1409781cb972e9.tar.gz |
Transplant consumer priorities from bug 25553.
-rw-r--r-- | src/priority_queue.erl | 37 | ||||
-rw-r--r-- | src/rabbit_amqqueue.erl | 11 | ||||
-rw-r--r-- | src/rabbit_amqqueue_process.erl | 93 | ||||
-rw-r--r-- | src/rabbit_channel.erl | 17 | ||||
-rw-r--r-- | src/rabbit_tests.erl | 2 |
5 files changed, 103 insertions, 57 deletions
diff --git a/src/priority_queue.erl b/src/priority_queue.erl index 6995c3be..c76c0d33 100644 --- a/src/priority_queue.erl +++ b/src/priority_queue.erl @@ -40,8 +40,8 @@ -module(priority_queue). --export([new/0, is_queue/1, is_empty/1, len/1, to_list/1, in/2, in/3, - out/1, join/2]). +-export([new/0, is_queue/1, is_empty/1, len/1, to_list/1, from_list/1, + in/2, in/3, out/1, out_p/1, join/2, filter/2, fold/3, highest/1]). %%---------------------------------------------------------------------------- @@ -59,10 +59,16 @@ -spec(is_empty/1 :: (pqueue()) -> boolean()). -spec(len/1 :: (pqueue()) -> non_neg_integer()). -spec(to_list/1 :: (pqueue()) -> [{priority(), any()}]). +-spec(from_list/1 :: ([{priority(), any()}]) -> pqueue()). -spec(in/2 :: (any(), pqueue()) -> pqueue()). -spec(in/3 :: (any(), priority(), pqueue()) -> pqueue()). -spec(out/1 :: (pqueue()) -> {empty | {value, any()}, pqueue()}). +-spec(out_p/1 :: (pqueue()) -> {empty | {value, any(), priority()}, pqueue()}). -spec(join/2 :: (pqueue(), pqueue()) -> pqueue()). +-spec(filter/2 :: (fun ((any()) -> boolean()), pqueue()) -> pqueue()). +-spec(fold/3 :: + (fun ((any(), priority(), A) -> A), A, pqueue()) -> A). +-spec(highest/1 :: (pqueue()) -> priority() | 'empty'). -endif. @@ -96,6 +102,9 @@ to_list({pqueue, Queues}) -> [{maybe_negate_priority(P), V} || {P, Q} <- Queues, {0, V} <- to_list(Q)]. +from_list(L) -> + lists:foldl(fun ({P, E}, Q) -> in(E, P, Q) end, new(), L). + in(Item, Q) -> in(Item, 0, Q). @@ -147,6 +156,14 @@ out({pqueue, [{P, Q} | Queues]}) -> end, {R, NewQ}. +out_p({queue, _, _, _} = Q) -> add_p(out(Q), 0); +out_p({pqueue, [{P, _} | _]} = Q) -> add_p(out(Q), maybe_negate_priority(P)). + +add_p(R, P) -> case R of + {empty, Q} -> {empty, Q}; + {{value, V}, Q} -> {{value, V, P}, Q} + end. + join(A, {queue, [], [], 0}) -> A; join({queue, [], [], 0}, B) -> @@ -185,6 +202,22 @@ merge([{PA, A}|As], Bs = [{PB, _}|_], Acc) when PA < PB orelse PA == infinity -> merge(As = [{_, _}|_], [{PB, B}|Bs], Acc) -> merge(As, Bs, [ {PB, B} | Acc ]). +filter(Pred, Q) -> fold(fun(V, P, Acc) -> + case Pred(V) of + true -> in(V, P, Acc); + false -> Acc + end + end, new(), Q). + +fold(Fun, Init, Q) -> case out_p(Q) of + {empty, _Q} -> Init; + {{value, V, P}, Q1} -> fold(Fun, Fun(V, P, Init), Q1) + end. + +highest({queue, [], [], 0}) -> empty; +highest({queue, _, _, _}) -> 0; +highest({pqueue, [{P, _} | _]}) -> maybe_negate_priority(P). + r2f([], 0) -> {queue, [], [], 0}; r2f([_] = R, 1) -> {queue, [], R, 1}; r2f([X,Y], 2) -> {queue, [X], [Y], 2}; diff --git a/src/rabbit_amqqueue.erl b/src/rabbit_amqqueue.erl index a1efaf65..0ec1cd54 100644 --- a/src/rabbit_amqqueue.erl +++ b/src/rabbit_amqqueue.erl @@ -26,7 +26,7 @@ -export([list/0, list/1, info_keys/0, info/1, info/2, info_all/1, info_all/2]). -export([force_event_refresh/0, wake_up/1]). -export([consumers/1, consumers_all/1, consumer_info_keys/0]). --export([basic_get/4, basic_consume/9, basic_cancel/4]). +-export([basic_get/4, basic_consume/10, basic_cancel/4]). -export([notify_sent/2, notify_sent_queue_down/1, resume/2, flush_all/2]). -export([notify_down_all/2, activate_limit_all/2, credit/5]). -export([on_node_down/1]). @@ -149,9 +149,9 @@ {'ok', non_neg_integer(), qmsg()} | 'empty'). -spec(credit/5 :: (rabbit_types:amqqueue(), pid(), rabbit_types:ctag(), non_neg_integer(), boolean()) -> 'ok'). --spec(basic_consume/9 :: +-spec(basic_consume/10 :: (rabbit_types:amqqueue(), boolean(), pid(), pid(), boolean(), - rabbit_types:ctag(), boolean(), {non_neg_integer(), boolean()} | 'none', any()) + rabbit_types:ctag(), boolean(), {non_neg_integer(), boolean()} | 'none', any(), any()) -> rabbit_types:ok_or_error('exclusive_consume_unavailable')). -spec(basic_cancel/4 :: (rabbit_types:amqqueue(), pid(), rabbit_types:ctag(), any()) -> 'ok'). @@ -550,9 +550,10 @@ basic_get(#amqqueue{pid = QPid}, ChPid, NoAck, LimiterPid) -> delegate:call(QPid, {basic_get, ChPid, NoAck, LimiterPid}). basic_consume(#amqqueue{pid = QPid}, NoAck, ChPid, LimiterPid, LimiterActive, - ConsumerTag, ExclusiveConsume, CreditArgs, OkMsg) -> + ConsumerTag, ExclusiveConsume, CreditArgs, OtherArgs, OkMsg) -> delegate:call(QPid, {basic_consume, NoAck, ChPid, LimiterPid, LimiterActive, - ConsumerTag, ExclusiveConsume, CreditArgs, OkMsg}). + ConsumerTag, ExclusiveConsume, CreditArgs, OtherArgs, + OkMsg}). basic_cancel(#amqqueue{pid = QPid}, ChPid, ConsumerTag, OkMsg) -> delegate:call(QPid, {basic_cancel, ChPid, ConsumerTag, OkMsg}). diff --git a/src/rabbit_amqqueue_process.erl b/src/rabbit_amqqueue_process.erl index 6e0eb9bf..547efa45 100644 --- a/src/rabbit_amqqueue_process.erl +++ b/src/rabbit_amqqueue_process.erl @@ -55,7 +55,7 @@ status }). --record(consumer, {tag, ack_required}). +-record(consumer, {tag, ack_required, args}). %% These are held in our process dictionary -record(cr, {ch_pid, @@ -145,7 +145,7 @@ init_state(Q) -> State = #q{q = Q, exclusive_consumer = none, has_had_consumers = false, - active_consumers = queue:new(), + active_consumers = priority_queue:new(), senders = pmon:new(delegate), msg_id_to_channel = gb_trees:empty(), status = running}, @@ -358,7 +358,7 @@ ensure_stats_timer(State) -> rabbit_event:ensure_stats_timer(State, #q.stats_timer, emit_stats). assert_invariant(State = #q{active_consumers = AC}) -> - true = (queue:is_empty(AC) orelse is_empty(State)). + true = (priority_queue:is_empty(AC) orelse is_empty(State)). is_empty(#q{backing_queue = BQ, backing_queue_state = BQS}) -> BQ:is_empty(BQS). @@ -377,7 +377,7 @@ ch_record(ChPid, LimiterPid) -> monitor_ref = MonitorRef, acktags = queue:new(), consumer_count = 0, - blocked_consumers = queue:new(), + blocked_consumers = priority_queue:new(), limiter = Limiter, unsent_message_count = 0}, put(Key, C), @@ -406,7 +406,7 @@ erase_ch_record(#cr{ch_pid = ChPid, monitor_ref = MonitorRef}) -> all_ch_record() -> [C || {{ch, _}, C} <- get()]. block_consumer(C = #cr{blocked_consumers = Blocked}, QEntry) -> - update_ch_record(C#cr{blocked_consumers = queue:in(QEntry, Blocked)}). + update_ch_record(C#cr{blocked_consumers = add_consumer(QEntry, Blocked)}). is_ch_blocked(#cr{unsent_message_count = Count, limiter = Limiter}) -> Count >= ?UNSENT_MESSAGE_LIMIT orelse rabbit_limiter:is_suspended(Limiter). @@ -430,17 +430,17 @@ deliver_msgs_to_consumers(_DeliverFun, true, State) -> {true, State}; deliver_msgs_to_consumers(DeliverFun, false, State = #q{active_consumers = ActiveConsumers}) -> - case queue:out(ActiveConsumers) of + case priority_queue:out_p(ActiveConsumers) of {empty, _} -> {false, State}; - {{value, QEntry}, Tail} -> + {{value, QEntry, Priority}, Tail} -> {Stop, State1} = deliver_msg_to_consumer( - DeliverFun, QEntry, + DeliverFun, QEntry, Priority, State#q{active_consumers = Tail}), deliver_msgs_to_consumers(DeliverFun, Stop, State1) end. -deliver_msg_to_consumer(DeliverFun, E = {ChPid, Consumer}, State) -> +deliver_msg_to_consumer(DeliverFun, E = {ChPid, Consumer}, Priority, State) -> C = lookup_ch(ChPid), case is_ch_blocked(C) of true -> block_consumer(C, E), @@ -452,20 +452,21 @@ deliver_msg_to_consumer(DeliverFun, E = {ChPid, Consumer}, State) -> block_consumer(C#cr{limiter = Limiter}, E), {false, State}; {continue, Limiter} -> - AC1 = queue:in(E, State#q.active_consumers), - deliver_msg_to_consumer( + AC1 = priority_queue:in(E, Priority, + State#q.active_consumers), + deliver_msg_to_consumer0( DeliverFun, Consumer, C#cr{limiter = Limiter}, State#q{active_consumers = AC1}) end end. -deliver_msg_to_consumer(DeliverFun, - #consumer{tag = ConsumerTag, - ack_required = AckRequired}, - C = #cr{ch_pid = ChPid, - acktags = ChAckTags, - unsent_message_count = Count}, - State = #q{q = #amqqueue{name = QName}}) -> +deliver_msg_to_consumer0(DeliverFun, + #consumer{tag = ConsumerTag, + ack_required = AckRequired}, + C = #cr{ch_pid = ChPid, + acktags = ChAckTags, + unsent_message_count = Count}, + State = #q{q = #amqqueue{name = QName}}) -> {{Message, IsDelivered, AckTag}, Stop, State1} = DeliverFun(AckRequired, State), rabbit_channel:deliver(ChPid, ConsumerTag, AckRequired, @@ -533,6 +534,13 @@ run_message_queue(State) -> is_empty(State), State), State1. +add_consumer({ChPid, Consumer = #consumer{args = Args}}, ActiveConsumers) -> + Priority = case rabbit_misc:table_lookup(Args, <<"x-priority">>) of + {_, P} -> P; + _ -> 0 + end, + priority_queue:in({ChPid, Consumer}, Priority, ActiveConsumers). + attempt_delivery(Delivery = #delivery{sender = SenderPid, message = Message}, Props, Delivered, State = #q{backing_queue = BQ, backing_queue_state = BQS}) -> @@ -629,17 +637,17 @@ requeue(AckTags, ChPid, State) -> fun (State1) -> requeue_and_run(AckTags, State1) end). remove_consumer(ChPid, ConsumerTag, Queue) -> - queue:filter(fun ({CP, #consumer{tag = CTag}}) -> - (CP /= ChPid) or (CTag /= ConsumerTag) - end, Queue). + priority_queue:filter(fun ({CP, #consumer{tag = CTag}}) -> + (CP /= ChPid) or (CTag /= ConsumerTag) + end, Queue). remove_consumers(ChPid, Queue, QName) -> - queue:filter(fun ({CP, #consumer{tag = CTag}}) when CP =:= ChPid -> - emit_consumer_deleted(ChPid, CTag, QName), - false; - (_) -> - true - end, Queue). + priority_queue:filter(fun ({CP, #consumer{tag = CTag}}) when CP =:= ChPid -> + emit_consumer_deleted(ChPid, CTag, QName), + false; + (_) -> + true + end, Queue). possibly_unblock(State, ChPid, Update) -> case lookup_ch(ChPid) of @@ -654,18 +662,19 @@ possibly_unblock(State, ChPid, Update) -> unblock(State, C = #cr{limiter = Limiter}) -> case lists:partition( - fun({_ChPid, #consumer{tag = CTag}}) -> + fun({_P, {_ChPid, #consumer{tag = CTag}}}) -> rabbit_limiter:is_consumer_blocked(Limiter, CTag) - end, queue:to_list(C#cr.blocked_consumers)) of + end, priority_queue:to_list(C#cr.blocked_consumers)) of {_, []} -> update_ch_record(C), State; {Blocked, Unblocked} -> - BlockedQ = queue:from_list(Blocked), - UnblockedQ = queue:from_list(Unblocked), + BlockedQ = priority_queue:from_list(Blocked), + UnblockedQ = priority_queue:from_list(Unblocked), update_ch_record(C#cr{blocked_consumers = BlockedQ}), - AC1 = queue:join(State#q.active_consumers, UnblockedQ), - run_message_queue(State#q{active_consumers = AC1}) + AC1 = priority_queue:join(State#q.active_consumers, UnblockedQ), + State1 = State#q{active_consumers = AC1}, + run_message_queue(State1) end. should_auto_delete(#q{q = #amqqueue{auto_delete = false}}) -> false; @@ -1002,9 +1011,9 @@ consumers(#q{active_consumers = ActiveConsumers}) -> consumers(ActiveConsumers, []), all_ch_record()). consumers(Consumers, Acc) -> - rabbit_misc:queue_fold( - fun ({ChPid, #consumer{tag = CTag, ack_required = AckRequired}}, Acc1) -> - [{ChPid, CTag, AckRequired} | Acc1] + priority_queue:fold( + fun ({ChPid, #consumer{tag = CTag, ack_required = AckReq}}, _P, Acc1) -> + [{ChPid, CTag, AckReq} | Acc1] end, Acc, Consumers). emit_stats(State) -> @@ -1134,7 +1143,7 @@ handle_call({basic_get, ChPid, NoAck, LimiterPid}, _From, end; handle_call({basic_consume, NoAck, ChPid, LimiterPid, LimiterActive, - ConsumerTag, ExclusiveConsume, CreditArgs, OkMsg}, + ConsumerTag, ExclusiveConsume, CreditArgs, OtherArgs, OkMsg}, _From, State = #q{exclusive_consumer = Holder}) -> case check_exclusive_access(Holder, ExclusiveConsume, State) of in_use -> @@ -1157,8 +1166,9 @@ handle_call({basic_consume, NoAck, ChPid, LimiterPid, LimiterActive, true -> send_drained(C1); false -> ok end, - Consumer = #consumer{tag = ConsumerTag, - ack_required = not NoAck}, + Consumer = #consumer{tag = ConsumerTag, + ack_required = not NoAck, + args = OtherArgs}, ExclusiveConsumer = if ExclusiveConsume -> {ChPid, ConsumerTag}; true -> Holder end, @@ -1167,8 +1177,9 @@ handle_call({basic_consume, NoAck, ChPid, LimiterPid, LimiterActive, ok = maybe_send_reply(ChPid, OkMsg), emit_consumer_created(ChPid, ConsumerTag, ExclusiveConsume, not NoAck, qname(State1)), - AC1 = queue:in({ChPid, Consumer}, State1#q.active_consumers), - reply(ok, run_message_queue(State1#q{active_consumers = AC1})) + AC1 = add_consumer({ChPid, Consumer}, State1#q.active_consumers), + State2 = State1#q{active_consumers = AC1}, + reply(ok, run_message_queue(State2)) end; handle_call({basic_cancel, ChPid, ConsumerTag, OkMsg}, _From, diff --git a/src/rabbit_channel.erl b/src/rabbit_channel.erl index 2cfbd96d..c3780581 100644 --- a/src/rabbit_channel.erl +++ b/src/rabbit_channel.erl @@ -734,7 +734,7 @@ handle_method(#'basic.consume'{queue = QueueNameBin, no_ack = NoAck, exclusive = ExclusiveConsume, nowait = NoWait, - arguments = Arguments}, + arguments = Args}, _, State = #ch{conn_pid = ConnPid, limiter = Limiter, consumer_mapping = ConsumerMapping}) -> @@ -755,12 +755,13 @@ handle_method(#'basic.consume'{queue = QueueNameBin, case rabbit_amqqueue:with_exclusive_access_or_die( QueueName, ConnPid, fun (Q) -> + {CreditArgs, OtherArgs} = parse_credit_args(Args), {rabbit_amqqueue:basic_consume( Q, NoAck, self(), rabbit_limiter:pid(Limiter), rabbit_limiter:is_active(Limiter), ActualConsumerTag, ExclusiveConsume, - parse_credit_args(Arguments), + CreditArgs, OtherArgs, ok_msg(NoWait, #'basic.consume_ok'{ consumer_tag = ActualConsumerTag})), Q} @@ -1247,12 +1248,12 @@ handle_delivering_queue_down(QPid, State = #ch{delivering_queues = DQ}) -> parse_credit_args(Arguments) -> case rabbit_misc:table_lookup(Arguments, <<"x-credit">>) of - {table, T} -> case {rabbit_misc:table_lookup(T, <<"credit">>), - rabbit_misc:table_lookup(T, <<"drain">>)} of - {{long, Credit}, {boolean, Drain}} -> {Credit, Drain}; - _ -> none - end; - undefined -> none + {table, T} -> {case {rabbit_misc:table_lookup(T, <<"credit">>), + rabbit_misc:table_lookup(T, <<"drain">>)} of + {{long, Credit}, {bool, Drain}} -> {Credit, Drain}; + _ -> none + end, lists:keydelete(<<"x-credit">>, 1, Arguments)}; + undefined -> {none, Arguments} end. binding_action(Fun, ExchangeNameBin, DestinationType, DestinationNameBin, diff --git a/src/rabbit_tests.erl b/src/rabbit_tests.erl index 5af4969a..76421d1a 100644 --- a/src/rabbit_tests.erl +++ b/src/rabbit_tests.erl @@ -1168,7 +1168,7 @@ test_server_status() -> rabbit_misc:r(<<"/">>, queue, Name), false, false, [], none)]], ok = rabbit_amqqueue:basic_consume( - Q, true, Ch, Limiter, false, <<"ctag">>, true, none, undefined), + Q, true, Ch, Limiter, false, <<"ctag">>, true, none, [], undefined), %% list queues ok = info_action(list_queues, rabbit_amqqueue:info_keys(), true), |