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macula
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7.0.0
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5.2.2
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5.0.0
4.8.0
4.7.1
4.7.0
4.6.0
4.5.0
4.4.10
4.4.9
4.4.8
4.4.7
4.4.6
4.4.5
4.4.4
4.4.3
4.4.2
4.4.1
4.4.0
4.3.1
4.3.0
4.2.9
4.2.8
4.2.7
4.2.6
4.2.5
4.2.4
4.2.3
4.2.2
4.2.1
4.2.0
4.1.1
4.1.0
4.0.0
3.16.0
3.15.3
3.15.2
3.15.1
3.14.0
3.13.0
3.12.1
3.12.0
3.11.1
3.11.0
3.10.3
3.10.2
3.10.1
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3.3.0
3.2.0
3.1.0
3.0.0
2.1.1
2.1.0
2.0.0
1.5.2
1.5.1
1.4.30
1.4.29
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1.4.25
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1.4.21
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1.4.17
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1.4.14
1.4.13
1.4.11
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1.4.9
1.4.8
1.4.7
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1.4.5
1.4.4
1.4.3
1.4.2
1.4.1
1.4.0
1.3.1
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1.0.10
1.0.9
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1.0.5
1.0.4
1.0.3
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1.0.1
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0.48.6
0.48.5
0.48.4
0.48.3
0.48.2
0.48.1
0.48.0
0.47.1
0.47.0
0.46.3
0.46.1
0.46.0
0.45.3
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0.45.1
0.45.0
0.44.2
0.44.1
0.44.0
0.43.3
0.43.2
0.43.1
0.43.0
0.42.9
0.42.8
0.42.7
0.42.6
0.42.5
0.42.4
0.42.3
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0.42.1
0.42.0
0.41.1
0.41.0
0.40.1
0.40.0
0.39.9
0.39.8
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0.39.6
0.39.5
0.39.4
0.39.3
0.39.2
0.39.1
0.39.0
0.38.8
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0.38.6
0.38.5
0.38.4
0.38.3
0.38.2
0.38.1
0.38.0
0.37.7
0.37.6
0.37.5
0.37.4
0.37.3
0.37.2
0.37.1
0.37.0
0.36.6
0.36.5
0.36.4
0.36.3
0.36.2
0.36.1
0.36.0
0.35.4
0.35.3
0.35.2
0.35.1
0.35.0
0.34.1
0.34.0
0.33.1
0.33.0
0.32.5
0.32.4
0.32.3
0.32.2
0.32.1
0.32.0
0.31.9
0.31.8
0.31.7
0.31.6
0.31.5
0.31.4
0.31.3
0.31.2
0.31.1
0.31.0
0.30.10
0.30.9
0.30.8
0.30.7
0.30.6
0.30.5
0.30.4
0.30.3
0.30.2
0.30.1
0.30.0
0.29.0
0.28.3
0.28.2
0.28.1
0.28.0
0.27.1
0.27.0
0.26.1
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0.25.6
0.25.5
0.25.4
0.25.3
0.25.2
0.25.1
0.25.0
0.24.6
0.24.5
0.24.4
0.24.3
0.24.2
0.24.1
0.24.0
0.23.3
0.23.2
0.23.1
0.23.0
0.22.12
0.22.11
0.22.10
0.22.9
0.22.8
0.22.7
0.22.6
0.22.5
0.22.4
0.22.3
0.22.2
0.22.1
0.22.0
0.21.7
0.21.6
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0.21.1
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0.20.25
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0.20.1
0.20.0
0.19.2
0.19.1
0.19.0
0.18.1
0.18.0
0.17.4
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0.17.1
0.17.0
0.16.6
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0.16.1
0.16.0
0.15.1
0.15.0
0.14.3
0.14.2
0.14.1
0.14.0
0.12.6
0.12.5
0.12.3
0.11.3
0.10.2
0.10.1
0.10.0
0.9.2
0.9.1
0.9.0
0.8.25
0.8.24
0.8.23
0.8.22
0.8.21
0.8.20
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0.8.8
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0.7.30
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0.6.5
0.6.4
0.6.3
0.6.2
0.6.1
0.6.0
0.5.0
0.4.4
0.4.3
0.4.2
0.4.1
0.4.0
0.3.4
0.3.3
0.3.2
0.3.1
Macula HTTP/3 Mesh SDK — connect, subscribe, publish, call, advertise
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Files
src/macula_rpc_discovery.erl
%%%-------------------------------------------------------------------
%%% @doc
%%% DHT integration for finding RPC service providers.
%%% Uses Kademlia DHT to publish and discover RPC registrations.
%%% @end
%%%-------------------------------------------------------------------
-module(macula_rpc_discovery).
%% API
-export([
find_providers/2,
announce_registration/5,
remove_registration/3,
filter_available/2
]).
%% Types
-type uri() :: binary().
-type node_id() :: binary().
-type address() :: {inet:ip_address(), inet:port_number()}.
-type provider_info() :: #{
node_id := node_id(),
address := address(),
metadata := map(),
last_seen := integer()
}.
-type dht_lookup_fun() :: fun((uri()) -> {ok, [provider_info()]} | {error, term()}).
-type dht_publish_fun() :: fun((uri(), node_id(), address(), map()) -> ok | {error, term()}).
-type dht_unpublish_fun() :: fun((uri(), node_id()) -> ok | {error, term()}).
-export_type([
uri/0,
node_id/0,
address/0,
provider_info/0,
dht_lookup_fun/0,
dht_publish_fun/0,
dht_unpublish_fun/0
]).
%%%===================================================================
%%% API Functions
%%%===================================================================
%% @doc Find service providers for a URI via DHT.
-spec find_providers(uri(), dht_lookup_fun()) -> {ok, [provider_info()]} | {error, term()}.
find_providers(Uri, DhtLookupFun) ->
DhtLookupFun(Uri).
%% @doc Announce local registration to DHT.
-spec announce_registration(uri(), node_id(), address(), map(), dht_publish_fun()) ->
ok | {error, term()}.
announce_registration(Uri, LocalNodeId, LocalAddress, Metadata, DhtPublishFun) ->
DhtPublishFun(Uri, LocalNodeId, LocalAddress, Metadata).
%% @doc Remove local registration from DHT.
-spec remove_registration(uri(), node_id(), dht_unpublish_fun()) -> ok | {error, term()}.
remove_registration(Uri, LocalNodeId, DhtUnpublishFun) ->
DhtUnpublishFun(Uri, LocalNodeId).
%% @doc Filter providers to only available ones (based on last_seen TTL).
-spec filter_available([provider_info()], pos_integer()) -> [provider_info()].
filter_available(Providers, TTL) ->
Now = erlang:system_time(millisecond),
MaxAge = TTL * 1000, % TTL in seconds, convert to milliseconds
lists:filter(
fun(Provider) ->
LastSeen = maps:get(last_seen, Provider),
Age = Now - LastSeen,
Age =< MaxAge
end,
Providers
).