Packages
amqp10_common
4.3.4
4.3.4
4.2.1
4.2.0
retired
4.1.6
4.0.3
4.0.3-rc.1
4.0.2
4.0.2-rc.2
4.0.2-rc.1
4.0.1
4.0.0
4.0.0-rc.2
4.0.0-rc.1
3.13.7
3.13.6
3.13.5
3.13.4
3.13.3
3.13.2
3.13.2-rc.1
3.13.1
3.13.0
3.13.0-rc.6
3.13.0-rc.5
3.13.0-rc.4
3.13.0-rc.3
3.13.0-rc.2
3.13.0-rc.1
3.12.14
3.12.13
3.12.12
3.12.11
3.12.10
3.12.9
3.12.8
3.12.7
3.12.6
3.12.5
3.12.4
3.12.3
3.12.2
3.12.1
3.12.0
3.12.0-rc.4
3.12.0-rc.3
3.12.0-rc.2
3.12.0-rc.1
3.11.28
3.11.27
3.11.26
3.11.25
3.11.24
3.11.23
3.11.22
3.11.21
3.11.20
3.11.19
3.11.18
3.11.17
3.11.16
3.11.15
3.11.14
3.11.13
3.11.12
3.11.11
3.11.10
3.11.9
3.11.8
3.11.7
3.11.6
3.11.5
3.11.4
3.11.3
3.11.2
3.11.1
3.11.0
3.11.0-rc.2
3.11.0-rc.1
3.11.0-1
3.10.25
3.10.24
3.10.23
3.10.22
3.10.21
3.10.20
3.10.19
3.10.18
3.10.17
3.10.16
3.10.15
3.10.14
3.10.13
3.10.12
3.10.11
3.10.10
3.10.9
3.10.8
3.10.7
3.10.6
3.10.5
3.10.4
3.10.3
3.10.2
retired
3.10.2-1
3.10.1
retired
3.10.0
retired
3.10.0-rc.6
3.10.0-rc.5
3.10.0-rc.1
3.9.29
3.9.28
3.9.27
3.9.26
3.9.25
3.9.24
3.9.23
3.9.22
3.9.21
3.9.20
3.9.19
3.9.18
retired
3.9.17
3.9.16
3.9.15
3.8.35
3.8.34
3.8.33
3.8.32
3.8.31
3.8.30
0.0.0-rc.1
Modules shared by rabbitmq-amqp1.0 and rabbitmq-amqp1.0-client
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Files
src/amqp10_util.erl
%% 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) 2007-2026 Broadcom. All Rights Reserved. The term “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. All rights reserved.
%%
-module(amqp10_util).
-include_lib("amqp10_common/include/amqp10_types.hrl").
-include_lib("amqp10_common/include/amqp10_framing.hrl").
-export([link_credit_snd/3,
dist_mode_to_atom/1,
dist_mode_from_atom/1]).
%% AMQP 1.0 §2.6.7
-spec link_credit_snd(sequence_no(), uint(), sequence_no()) -> uint().
link_credit_snd(DeliveryCountRcv, LinkCreditRcv, DeliveryCountSnd) ->
LinkCreditSnd = serial_number:diff(
serial_number:add(DeliveryCountRcv, LinkCreditRcv),
DeliveryCountSnd),
%% LinkCreditSnd can be negative when receiver decreases credits
%% while messages are in flight. Maintain a floor of zero.
max(0, LinkCreditSnd).
-spec dist_mode_to_atom({symbol, binary()}) -> distribution_mode().
dist_mode_to_atom(?V_1_0_STD_DIST_MODE_MOVE) ->
move;
dist_mode_to_atom(?V_1_0_STD_DIST_MODE_COPY) ->
copy.
-spec dist_mode_from_atom(distribution_mode()) -> {symbol, binary()}.
dist_mode_from_atom(move) ->
?V_1_0_STD_DIST_MODE_MOVE;
dist_mode_from_atom(copy) ->
?V_1_0_STD_DIST_MODE_COPY.