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+#!/usr/bin/env escript
+%% -*- erlang -*-
+
+% 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.
+
+%% XXX: Figure out how to -include("couch_db.hrl")
+-record(doc, {id= <<"">>, revs={0, []}, body={[]},
+ attachments=[], deleted=false, meta=[]}).
+
+-record(http_db, {
+ url,
+ auth = [],
+ resource = "",
+ headers = [
+ {"User-Agent", "CouchDB/"++couch_server:get_version()},
+ {"Accept", "application/json"},
+ {"Accept-Encoding", "gzip"}
+ ],
+ qs = [],
+ method = get,
+ body = nil,
+ options = [
+ {response_format,binary},
+ {inactivity_timeout, 30000}
+ ],
+ retries = 10,
+ pause = 1,
+ conn = nil
+}).
+
+config_files() ->
+ lists:map(fun test_util:build_file/1, [
+ "etc/couchdb/default_dev.ini",
+ "etc/couchdb/local_dev.ini"
+ ]).
+
+main(_) ->
+ test_util:init_code_path(),
+
+ etap:plan(13),
+ case (catch test()) of
+ ok ->
+ etap:end_tests();
+ Other ->
+ etap:diag(io_lib:format("Test died abnormally: ~p", [Other])),
+ etap:bail(Other)
+ end,
+ ok.
+
+test() ->
+ couch_server_sup:start_link(config_files()),
+ ibrowse:start(),
+ crypto:start(),
+
+ couch_server:delete(<<"etap-test-db">>, []),
+ {ok, Db1} = couch_db:create(<<"etap-test-db">>, []),
+ test_all(local),
+ couch_db:close(Db1),
+ couch_server:delete(<<"etap-test-db">>, []),
+
+ couch_server:delete(<<"etap-test-db">>, []),
+ {ok, Db2} = couch_db:create(<<"etap-test-db">>, []),
+ test_all(remote),
+ test_remote_only(),
+ couch_db:close(Db2),
+ couch_server:delete(<<"etap-test-db">>, []),
+
+ ok.
+
+test_all(Type) ->
+ test_unchanged_db(Type),
+ test_simple_change(Type),
+ test_since_parameter(Type),
+ test_continuous_parameter(Type),
+ test_conflicts(Type),
+ test_deleted_conflicts(Type).
+
+test_remote_only() ->
+ test_chunk_reassembly(remote).
+
+test_unchanged_db(Type) ->
+ {ok, Pid} = start_changes_feed(Type, 0, false),
+ etap:is(
+ couch_rep_changes_feed:next(Pid),
+ complete,
+ io_lib:format(
+ "(~p) changes feed for unchanged DB is automatically complete",
+ [Type])
+ ).
+
+test_simple_change(Type) ->
+ Expect = generate_change(),
+ {ok, Pid} = start_changes_feed(Type, 0, false),
+ etap:is(
+ {couch_rep_changes_feed:next(Pid), couch_rep_changes_feed:next(Pid)},
+ {[Expect], complete},
+ io_lib:format("(~p) change one document, get one row", [Type])
+ ).
+
+test_since_parameter(Type) ->
+ {ok, Pid} = start_changes_feed(Type, get_update_seq(), false),
+ etap:is(
+ couch_rep_changes_feed:next(Pid),
+ complete,
+ io_lib:format(
+ "(~p) since query-string parameter allows us to skip changes",
+ [Type])
+ ).
+
+test_continuous_parameter(Type) ->
+ {ok, Pid} = start_changes_feed(Type, get_update_seq(), true),
+
+ % make the changes_feed request before the next update
+ Self = self(),
+ spawn(fun() ->
+ Change = couch_rep_changes_feed:next(Pid),
+ Self ! {actual, Change}
+ end),
+
+ Expect = generate_change(),
+ etap:is(
+ receive {actual, Actual} -> Actual end,
+ [Expect],
+ io_lib:format(
+ "(~p) feed=continuous query-string parameter picks up new changes",
+ [Type])
+ ),
+
+ ok = couch_rep_changes_feed:stop(Pid).
+
+test_conflicts(Type) ->
+ Since = get_update_seq(),
+ Expect = generate_conflict(),
+ {ok, Pid} = start_changes_feed(Type, Since, false),
+ etap:is(
+ {couch_rep_changes_feed:next(Pid), couch_rep_changes_feed:next(Pid)},
+ {[Expect], complete},
+ io_lib:format("(~p) conflict revisions show up in feed", [Type])
+ ).
+
+test_deleted_conflicts(Type) ->
+ Since = get_update_seq(),
+ {ExpectProps} = generate_conflict(),
+
+ %% delete the conflict revision
+ Id = couch_util:get_value(<<"id">>, ExpectProps),
+ [Win, {[{<<"rev">>, Lose}]}] = couch_util:get_value(<<"changes">>, ExpectProps),
+ Doc = couch_doc:from_json_obj({[
+ {<<"_id">>, Id},
+ {<<"_rev">>, Lose},
+ {<<"_deleted">>, true}
+ ]}),
+ Db = get_db(),
+ {ok, Rev} = couch_db:update_doc(Db, Doc, [full_commit]),
+ couch_db:close(Db),
+
+ Expect = {[
+ {<<"seq">>, get_update_seq()},
+ {<<"id">>, Id},
+ {<<"changes">>, [Win, {[{<<"rev">>, couch_doc:rev_to_str(Rev)}]}]}
+ ]},
+
+ {ok, Pid} = start_changes_feed(Type, Since, false),
+ etap:is(
+ {couch_rep_changes_feed:next(Pid), couch_rep_changes_feed:next(Pid)},
+ {[Expect], complete},
+ io_lib:format("(~p) deleted conflict revisions show up in feed", [Type])
+ ).
+
+test_chunk_reassembly(Type) ->
+ Since = get_update_seq(),
+ Expect = [generate_change() || _I <- lists:seq(1,30)],
+ {ok, Pid} = start_changes_feed(Type, Since, false),
+ etap:is(
+ get_all_changes(Pid, []),
+ Expect,
+ io_lib:format("(~p) reassembles chunks split across TCP frames",
+ [Type])
+ ).
+
+get_all_changes(Pid, Acc) ->
+ case couch_rep_changes_feed:next(Pid) of
+ complete ->
+ lists:flatten(lists:reverse(Acc));
+ Else ->
+ get_all_changes(Pid, [Else|Acc])
+ end.
+
+generate_change() ->
+ generate_change(couch_uuids:random()).
+
+generate_change(Id) ->
+ generate_change(Id, {[]}).
+
+generate_change(Id, EJson) ->
+ Doc = couch_doc:from_json_obj(EJson),
+ Db = get_db(),
+ {ok, Rev} = couch_db:update_doc(Db, Doc#doc{id = Id}, [full_commit]),
+ couch_db:close(Db),
+ {[
+ {<<"seq">>, get_update_seq()},
+ {<<"id">>, Id},
+ {<<"changes">>, [{[{<<"rev">>, couch_doc:rev_to_str(Rev)}]}]}
+ ]}.
+
+generate_conflict() ->
+ Id = couch_uuids:random(),
+ Db = get_db(),
+ Doc1 = (couch_doc:from_json_obj({[<<"foo">>, <<"bar">>]}))#doc{id = Id},
+ Doc2 = (couch_doc:from_json_obj({[<<"foo">>, <<"baz">>]}))#doc{id = Id},
+ {ok, Rev1} = couch_db:update_doc(Db, Doc1, [full_commit]),
+ {ok, Rev2} = couch_db:update_doc(Db, Doc2, [full_commit, all_or_nothing]),
+
+ %% relies on undocumented CouchDB conflict winner algo and revision sorting!
+ RevList = [{[{<<"rev">>, couch_doc:rev_to_str(R)}]} || R
+ <- lists:sort(fun(A,B) -> B<A end, [Rev1,Rev2])],
+ {[
+ {<<"seq">>, get_update_seq()},
+ {<<"id">>, Id},
+ {<<"changes">>, RevList}
+ ]}.
+
+get_db() ->
+ {ok, Db} = couch_db:open(<<"etap-test-db">>, []),
+ Db.
+
+get_dbname(local) ->
+ "etap-test-db";
+get_dbname(remote) ->
+ "http://127.0.0.1:5984/etap-test-db/".
+
+get_update_seq() ->
+ Db = get_db(),
+ Seq = couch_db:get_update_seq(Db),
+ couch_db:close(Db),
+ Seq.
+
+start_changes_feed(local, Since, Continuous) ->
+ Props = [{<<"continuous">>, Continuous}],
+ couch_rep_changes_feed:start_link(self(), get_db(), Since, Props);
+start_changes_feed(remote, Since, Continuous) ->
+ Props = [{<<"continuous">>, Continuous}],
+ Db = #http_db{url = get_dbname(remote)},
+ couch_rep_changes_feed:start_link(self(), Db, Since, Props).
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-20 03:48:20 +0000