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-module(mongoose_component_mnesia). |
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-behaviour(mongoose_component_backend). |
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-export([init/1, |
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node_cleanup/1, |
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register_components/1, |
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unregister_components/1, |
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lookup_component/1, |
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lookup_component/2, |
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get_all_components/1]). |
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-include("external_component.hrl"). |
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init(_) -> |
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53 |
update_tables(), |
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%% add distributed service_component routes |
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53 |
mongoose_mnesia:create_table(external_component, |
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[{type, bag}, |
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{ram_copies, [node()]}, |
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{attributes, |
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record_info(fields, external_component)}]). |
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update_tables() -> |
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%% delete old schema |
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case catch mnesia:table_info(external_componenst, local_content) of |
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true -> |
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:-( |
mnesia:delete_table(external_component); |
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_ -> |
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ok |
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end. |
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node_cleanup(Node) -> |
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:-( |
Entries = mnesia:dirty_match_object(external_component, |
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#external_component{node = Node, _ = '_'}), |
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:-( |
[mnesia:dirty_delete_object(external_component, Entry) || Entry <- Entries], |
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:-( |
ok. |
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register_components(Components) -> |
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F = fun() -> |
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lists:foreach(fun mnesia:write/1, Components) |
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end, |
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case mnesia:transaction(F) of |
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{atomic, ok} -> ok; |
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:-( |
{aborted, Reason} -> error({mnesia_aborted_write, Reason}) |
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end. |
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unregister_components(Components) -> |
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F = fun() -> |
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lists:foreach(fun do_unregister_component/1, Components) |
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end, |
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{atomic, ok} = mnesia:transaction(F), |
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ok. |
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do_unregister_component(Component) -> |
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ok = mnesia:delete_object(external_component, Component, write). |
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lookup_component(Domain) -> |
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395 |
mnesia:dirty_read(external_component, Domain). |
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lookup_component(Domain, Node) -> |
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356 |
mnesia:dirty_match_object(external_component, |
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#external_component{domain = Domain, node = Node, _ = '_'}). |
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get_all_components(all) -> |
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50 |
mnesia:dirty_all_keys(external_component); |
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get_all_components(only_public) -> |
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40 |
MatchNonHidden = {#external_component{ domain = '$1', is_hidden = false, _ = '_' }, [], ['$1']}, |
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40 |
mnesia:dirty_select(external_component, [MatchNonHidden]). |