Packages
ex_esdb
0.0.9-alpha
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0.9.0
0.8.0
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0.7.7
0.7.6
0.7.5
0.7.4
0.7.3
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0.7.1
0.7.0
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0.6.0
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0.5.0
0.4.8
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0.4.4
0.4.3
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0.4.1
0.4.0
0.3.3
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0.3.1
0.3.0
0.2.5
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0.2.2
0.2.1
0.2.0
0.1.7
0.1.6
0.1.5
0.1.4
0.1.3
0.1.2
0.1.1
0.1.0
0.0.20
0.0.19
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0.0.14-alpha
0.0.13-alpha
0.0.12-alpha
0.0.11-alpha
0.0.10-alpha
0.0.9-alpha
0.0.8-alpha
0.0.6-alpha
0.0.5-alpha
0.0.4-alpha
0.0.3-alpha
0.0.2-alfa
0.0.1-alfa
ExESDB is a reincarnation of rabbitmq/khepri, specialized for use as a BEAM-native event store.
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Files
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Files
src/subscriptions_store.erl
-module(subscriptions_store).
-export([get_subscription/2, put_subscription/2, delete_subscription/2, key/1]).
get_subscription(Store, Key) when is_binary(Key) ->
Path = [subscriptions, Key],
get_subscription(Store, Path);
get_subscription(Store, Path) when is_list(Path) ->
case khepri:get(Store, Path) of
{ok, Subscription} ->
Subscription;
{error, _Reason} ->
nil
end.
key(KeyT) when is_tuple(KeyT) ->
integer_to_binary(erlang:phash2(KeyT));
key(Subscription) when is_map(Subscription) ->
#{type := Type,
selector := Selector,
subscription_name := SubscriptionName} =
Subscription,
key({Type, Selector, SubscriptionName}).
put_subscription(Store, Subscription) ->
Key = key(Subscription),
case khepri:exists(Store, [subscriptions, Key]) of
true ->
ok;
false ->
ok = khepri:put(Store, [subscriptions, Key], Subscription),
ok
end.
delete_subscription(Store, Subscription) ->
Key = key(Subscription),
case khepri:exists(Store, [subscriptions, Key]) of
true ->
ok = khepri:delete(Store, [subscriptions, Key]),
ok;
false ->
ok
end.