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erleans_provider.erl
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erleans_provider.erl
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%%%----------------------------------------------------------------------------
%%% Copyright Tristan Sloughter 2019. All Rights Reserved.
%%%
%%% Licensed under the Apache License, Version 2.0 (the "License");
%%% you may not use this file except in compliance with the License.
%%% You may obtain a copy of the License at
%%%
%%% http://www.apache.org/licenses/LICENSE-2.0
%%%
%%% Unless required by applicable law or agreed to in writing, software
%%% distributed under the License is distributed on an "AS IS" BASIS,
%%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%%% See the License for the specific language governing permissions and
%%% limitations under the License.
%%%
%%% @doc
%%% @end
%%% ---------------------------------------------------------------------------
-module(erleans_provider).
-export([start_link/2]).
-callback start_link(ProviderName :: atom(), Args :: list()) -> {ok, pid()}.
-callback all(Type :: module(), ProviderName :: atom()) -> {ok, [any()]} | {error, any()}.
-callback read(Type :: module(), ProviderName :: atom(), Id :: term()) ->
{ok, State :: any(), ETag :: erleans:etag()} |
{error, not_found}.
-callback read_by_hash(Type :: module(), ProviderName :: atom(), Hash :: integer()) ->
{ok, [{GrainRef :: erleans:grain_ref(), Type :: module(), ETag :: erleans:etag(), State :: any()}]} |
{error, not_found}.
-callback insert(Type :: module(), ProviderName :: atom(), Id :: any(), State :: any(), ETag :: erleans:etag()) -> ok.
-callback insert(Type :: module(), ProviderName :: atom(), Id :: any(), Hash :: integer(),
State :: any(), ETag :: erleans:etag()) -> ok.
-callback update(Type :: module(), ProviderName :: atom(), Id :: any(), State :: any(),
ETag :: erleans:etag(), NewETag :: erleans:etag()) ->
ok |
{error, {bad_etag, erleans:etag(), erleans:etag()}} |
{error, not_found}.
-callback update(Type :: module(), ProviderName :: atom(), Id :: any(), Hash :: integer(),
State :: any(), ETag :: erleans:etag(), NewETag :: erleans:etag()) ->
ok |
{error, {bad_etag, erleans:etag(), erleans:etag()}} |
{error, not_found}.
start_link(Name, #{module := Module,
args := Args}) ->
Module:start_link(Name, Args).