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author | Paul J. Davis <paul.joseph.davis@gmail.com> | 2019-02-25 13:48:14 -0600 |
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committer | Paul J. Davis <paul.joseph.davis@gmail.com> | 2019-02-25 13:48:14 -0600 |
commit | 8df448381c9fde530068b060ba92a066fb30b725 (patch) | |
tree | fb388fce52699a71bce3482b88fed44fac239d8a | |
parent | 730d3605a1f3ca1eb63645fc1ed6ca12e781ab94 (diff) | |
download | couchdb-8df448381c9fde530068b060ba92a066fb30b725.tar.gz |
First contact with FoundationDB
-rw-r--r-- | src/fabric/src/fabric.app.src | 8 | ||||
-rw-r--r-- | src/fabric/src/fabric_app.erl | 28 | ||||
-rw-r--r-- | src/fabric/src/fabric_server.erl | 65 | ||||
-rw-r--r-- | src/fabric/src/fabric_sup.erl | 43 |
4 files changed, 142 insertions, 2 deletions
diff --git a/src/fabric/src/fabric.app.src b/src/fabric/src/fabric.app.src index d7686ca1a..f59108290 100644 --- a/src/fabric/src/fabric.app.src +++ b/src/fabric/src/fabric.app.src @@ -13,7 +13,10 @@ {application, fabric, [ {description, "Routing and proxying layer for CouchDB cluster"}, {vsn, git}, - {registered, []}, + {mod, {fabric_app, []}}, + {registered, [ + fabric_server + ]}, {applications, [ kernel, stdlib, @@ -22,6 +25,7 @@ rexi, mem3, couch_log, - couch_stats + couch_stats, + erlfdb ]} ]}. diff --git a/src/fabric/src/fabric_app.erl b/src/fabric/src/fabric_app.erl new file mode 100644 index 000000000..77d9886a7 --- /dev/null +++ b/src/fabric/src/fabric_app.erl @@ -0,0 +1,28 @@ +% 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. + +-module(fabric_app). +-behaviour(application). + + +-export([ + start/2, + stop/1 +]). + + +start(_Type, StartArgs) -> + fabric_sup:start_link(StartArgs). + + +stop(_State) -> + ok. diff --git a/src/fabric/src/fabric_server.erl b/src/fabric/src/fabric_server.erl new file mode 100644 index 000000000..d1d7e9f1c --- /dev/null +++ b/src/fabric/src/fabric_server.erl @@ -0,0 +1,65 @@ +% 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. + +-module(fabric_server). +-behaviour(gen_server). +-vsn(1). + + +-export([ + start_link/0 +]). + + +-export([ + init/1, + terminate/2, + handle_call/3, + handle_cast/2, + handle_info/2, + code_change/3 +]). + + +-record(st, { + db +}). + + +start_link() -> + gen_server:start_link({local, ?MODULE}, ?MODULE, [], []). + + +init(_) -> + ClusterStr = config:get("erlfdb", "cluster_file", "/usr/local/etc/foundationdb/fdb.cluster"), + Db = erlfdb:open(iolist_to_binary(ClusterStr)), + {ok, #st{db = Db}}. + + +terminate(_, _St) -> + ok. + + +handle_call(Msg, _From, St) -> + {stop, {bad_call, Msg}, {bad_call, Msg}, St}. + + +handle_cast(Msg, St) -> + {stop, {bad_cast, Msg}, St}. + + +handle_info(Msg, St) -> + {stop, {bad_info, Msg}, St}. + + +code_change(_OldVsn, St, _Extra) -> + {ok, St}. diff --git a/src/fabric/src/fabric_sup.erl b/src/fabric/src/fabric_sup.erl new file mode 100644 index 000000000..54636638c --- /dev/null +++ b/src/fabric/src/fabric_sup.erl @@ -0,0 +1,43 @@ +% 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. + +-module(fabric_sup). +-behaviour(supervisor). +-vsn(1). + + +-export([ + start_link/1 +]). + +-export([ + init/1 +]). + + +start_link(Args) -> + supervisor:start_link({local, ?MODULE}, ?MODULE, Args). + + +init([]) -> + Flags = #{ + strategy => one_for_one, + intensity => 1, + period => 5 + }, + Children = [ + #{ + id => fabric_server, + start => {fabric_server, start_link, []} + } + ], + {ok, {Flags, Children}}. |