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-module(mongoose_wpool_rdbms). |
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-behaviour(mongoose_wpool). |
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-export([init/0]). |
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-export([start/4]). |
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-export([stop/2]). |
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%% -------------------------------------------------------------- |
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%% mongoose_wpool callbacks |
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-spec init() -> ok. |
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init() -> |
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104 |
ejabberd_sup:create_ets_table( |
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prepared_statements, [named_table, public, {read_concurrency, true}]). |
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-spec start(mongooseim:host_type_or_global(), mongoose_wpool:tag(), |
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mongoose_wpool:pool_opts(), mongoose_wpool:conn_opts()) -> {ok, pid()} | {error, any()}. |
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start(HostType, Tag, WpoolOpts, RdbmsOpts) -> |
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104 |
try do_start(HostType, Tag, WpoolOpts, RdbmsOpts) |
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catch |
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:-( |
Err -> {error, Err} |
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end. |
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-spec stop(mongooseim:host_type_or_global(), mongoose_wpool:tag()) -> ok. |
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stop(_, _) -> |
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101 |
ok. |
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%% -------------------------------------------------------------- |
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%% Helper functions |
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do_start(HostType, Tag, WpoolOpts0, RdbmsOpts) when is_list(WpoolOpts0), is_map(RdbmsOpts) -> |
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104 |
#{driver := BackendName} = RdbmsOpts, |
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104 |
mongoose_backend:init(global, mongoose_rdbms, [query, execute], #{backend => BackendName}), |
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mongoose_metrics:ensure_db_pool_metric({rdbms, HostType, Tag}), |
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104 |
WpoolOpts = make_wpool_opts(WpoolOpts0, RdbmsOpts), |
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104 |
ProcName = mongoose_wpool:make_pool_name(rdbms, HostType, Tag), |
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mongoose_wpool:start_sup_pool(rdbms, ProcName, WpoolOpts). |
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make_wpool_opts(WpoolOpts0, RdbmsOpts) -> |
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104 |
Worker = {mongoose_rdbms, RdbmsOpts}, |
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104 |
[{worker, Worker}, {pool_sup_shutdown, infinity} | WpoolOpts0]. |