Packages
ex_esdb
0.0.20
0.11.0
0.10.0
0.9.0
0.8.0
0.7.8
0.7.7
0.7.6
0.7.5
0.7.4
0.7.3
0.7.2
0.7.1
0.7.0
0.6.1
0.6.0
0.5.1
0.5.0
0.4.8
0.4.7
0.4.6
0.4.5
0.4.4
0.4.3
0.4.2
0.4.1
0.4.0
0.3.3
0.3.2
0.3.1
0.3.0
0.2.5
0.2.4
0.2.3
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
0.0.18
0.0.17
0.0.16
0.0.15
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.