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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) 2007-2021 VMware, Inc. or its affiliates. All rights reserved.
%%
-module(rabbit_federation_parameters).
-behaviour(rabbit_runtime_parameter).
-behaviour(rabbit_policy_validator).
-include_lib("rabbit_common/include/rabbit.hrl").
-export([validate/5, notify/5, notify_clear/4]).
-export([register/0, unregister/0, validate_policy/1, adjust/1]).
-define(RUNTIME_PARAMETERS,
[{runtime_parameter, <<"federation">>},
{runtime_parameter, <<"federation-upstream">>},
{runtime_parameter, <<"federation-upstream-set">>},
{policy_validator, <<"federation-upstream">>},
{policy_validator, <<"federation-upstream-pattern">>},
{policy_validator, <<"federation-upstream-set">>}]).
-rabbit_boot_step({?MODULE,
[{description, "federation parameters"},
{mfa, {rabbit_federation_parameters, register, []}},
{requires, rabbit_registry},
{cleanup, {rabbit_federation_parameters, unregister, []}},
{enables, recovery}]}).
register() ->
[rabbit_registry:register(Class, Name, ?MODULE) ||
{Class, Name} <- ?RUNTIME_PARAMETERS],
ok.
unregister() ->
[rabbit_registry:unregister(Class, Name) ||
{Class, Name} <- ?RUNTIME_PARAMETERS],
ok.
validate(_VHost, <<"federation-upstream-set">>, Name, Term0, _User) ->
Term = [rabbit_data_coercion:to_proplist(Upstream) || Upstream <- Term0],
[rabbit_parameter_validation:proplist(
Name,
[{<<"upstream">>, fun rabbit_parameter_validation:binary/2, mandatory} |
shared_validation()], Upstream)
|| Upstream <- Term];
validate(_VHost, <<"federation-upstream">>, Name, Term0, _User) ->
Term = rabbit_data_coercion:to_proplist(Term0),
rabbit_parameter_validation:proplist(
Name, [{<<"uri">>, fun validate_uri/2, mandatory} |
shared_validation()], Term);
validate(_VHost, _Component, Name, _Term, _User) ->
{error, "name not recognised: ~p", [Name]}.
notify(_VHost, <<"federation-upstream-set">>, Name, _Term, _Username) ->
adjust({upstream_set, Name});
notify(_VHost, <<"federation-upstream">>, Name, _Term, _Username) ->
adjust({upstream, Name}).
notify_clear(_VHost, <<"federation-upstream-set">>, Name, _Username) ->
adjust({clear_upstream_set, Name});
notify_clear(VHost, <<"federation-upstream">>, Name, _Username) ->
rabbit_federation_exchange_link_sup_sup:adjust({clear_upstream, VHost, Name}),
rabbit_federation_queue_link_sup_sup:adjust({clear_upstream, VHost, Name}).
adjust(Thing) ->
rabbit_federation_exchange_link_sup_sup:adjust(Thing),
rabbit_federation_queue_link_sup_sup:adjust(Thing).
%%----------------------------------------------------------------------------
shared_validation() ->
[{<<"exchange">>, fun rabbit_parameter_validation:binary/2, optional},
{<<"queue">>, fun rabbit_parameter_validation:binary/2, optional},
{<<"consumer-tag">>, fun rabbit_parameter_validation:binary/2, optional},
{<<"prefetch-count">>, fun rabbit_parameter_validation:number/2, optional},
{<<"reconnect-delay">>,fun rabbit_parameter_validation:number/2, optional},
{<<"max-hops">>, fun rabbit_parameter_validation:number/2, optional},
{<<"expires">>, fun rabbit_parameter_validation:number/2, optional},
{<<"message-ttl">>, fun rabbit_parameter_validation:number/2, optional},
{<<"trust-user-id">>, fun rabbit_parameter_validation:boolean/2, optional},
{<<"ack-mode">>, rabbit_parameter_validation:enum(
['no-ack', 'on-publish', 'on-confirm']), optional},
{<<"resource-cleanup-mode">>, rabbit_parameter_validation:enum(
['default', 'never']), optional},
{<<"ha-policy">>, fun rabbit_parameter_validation:binary/2, optional},
{<<"bind-nowait">>, fun rabbit_parameter_validation:boolean/2, optional},
{<<"channel-use-mode">>, rabbit_parameter_validation:enum(
['multiple', 'single']), optional}].
validate_uri(Name, Term) when is_binary(Term) ->
case rabbit_parameter_validation:binary(Name, Term) of
ok -> case amqp_uri:parse(binary_to_list(Term)) of
{ok, _} -> ok;
{error, E} -> {error, "\"~s\" not a valid URI: ~p", [Term, E]}
end;
E -> E
end;
validate_uri(Name, Term) ->
case rabbit_parameter_validation:list(Name, Term) of
ok -> case [V || U <- Term,
V <- [validate_uri(Name, U)],
element(1, V) =:= error] of
[] -> ok;
[E | _] -> E
end;
E -> E
end.
%%----------------------------------------------------------------------------
validate_policy([{<<"federation-upstream-set">>, Value}])
when is_binary(Value) ->
ok;
validate_policy([{<<"federation-upstream-set">>, Value}]) ->
{error, "~p is not a valid federation upstream set name", [Value]};
validate_policy([{<<"federation-upstream-pattern">>, Value}])
when is_binary(Value) ->
case re:compile(Value) of
{ok, _} -> ok;
{error, Reason} -> {error, "could not compile pattern ~s to a regular expression. "
"Error: ~p", [Value, Reason]}
end;
validate_policy([{<<"federation-upstream-pattern">>, Value}]) ->
{error, "~p is not a valid federation upstream pattern name", [Value]};
validate_policy([{<<"federation-upstream">>, Value}])
when is_binary(Value) ->
ok;
validate_policy([{<<"federation-upstream">>, Value}]) ->
{error, "~p is not a valid federation upstream name", [Value]};
validate_policy(L) when length(L) >= 2 ->
{error, "cannot specify federation-upstream, federation-upstream-set "
"or federation-upstream-pattern together", []}.
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