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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 Developer of the Original Code is GoPivotal, Inc.
%% Copyright (c) 2007-2014 GoPivotal, Inc. All rights reserved.
%%
-module(rabbit_policies).
-behaviour(rabbit_policy_validator).
-include("rabbit.hrl").
-export([register/0, validate_policy/1]).
-rabbit_boot_step({?MODULE,
[{description, "internal policies"},
{mfa, {rabbit_policies, register, []}},
{requires, rabbit_registry},
{enables, recovery}]}).
register() ->
[rabbit_registry:register(Class, Name, ?MODULE) ||
{Class, Name} <- [{policy_validator, <<"alternate-exchange">>},
{policy_validator, <<"dead-letter-exchange">>},
{policy_validator, <<"dead-letter-routing-key">>},
{policy_validator, <<"message-ttl">>},
{policy_validator, <<"expires">>},
{policy_validator, <<"max-length">>}]],
ok.
validate_policy(Terms) ->
lists:foldl(fun ({Key, Value}, ok) -> validate_policy0(Key, Value);
(_, Error) -> Error
end, ok, Terms).
validate_policy0(<<"alternate-exchange">>, Value)
when is_binary(Value) ->
ok;
validate_policy0(<<"alternate-exchange">>, Value) ->
{error, "~p is not a valid alternate exchange name", [Value]};
validate_policy0(<<"dead-letter-exchange">>, Value)
when is_binary(Value) ->
ok;
validate_policy0(<<"dead-letter-exchange">>, Value) ->
{error, "~p is not a valid dead letter exchange name", [Value]};
validate_policy0(<<"dead-letter-routing-key">>, Value)
when is_binary(Value) ->
ok;
validate_policy0(<<"dead-letter-routing-key">>, Value) ->
{error, "~p is not a valid dead letter routing key", [Value]};
validate_policy0(<<"message-ttl">>, Value)
when is_integer(Value), Value >= 0, Value =< ?MAX_EXPIRY_TIMER ->
ok;
validate_policy0(<<"message-ttl">>, Value) ->
{error, "~p is not a valid message TTL", [Value]};
validate_policy0(<<"expires">>, Value)
when is_integer(Value), Value >= 1, Value =< ?MAX_EXPIRY_TIMER ->
ok;
validate_policy0(<<"expires">>, Value) ->
{error, "~p is not a valid queue expiry", [Value]};
validate_policy0(<<"max-length">>, Value)
when is_integer(Value), Value >= 0 ->
ok;
validate_policy0(<<"max-length">>, Value) ->
{error, "~p is not a valid maximum length", [Value]}.
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