From 8d73d47124a7f23afd0233c1c1a15e3d16a5da60 Mon Sep 17 00:00:00 2001
From: Joseph Blomstedt <joe@basho.com>
Date: Wed, 18 Dec 2013 19:26:57 -0800
Subject: [PATCH] Add verify_conditional_postcommit

---
 tests/verify_conditional_postcommit.erl | 80 +++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 tests/verify_conditional_postcommit.erl

diff --git a/tests/verify_conditional_postcommit.erl b/tests/verify_conditional_postcommit.erl
new file mode 100644
index 00000000..fcb2c5f0
--- /dev/null
+++ b/tests/verify_conditional_postcommit.erl
@@ -0,0 +1,80 @@
+%% -------------------------------------------------------------------
+%%
+%% Copyright (c) 2013 Basho Technologies, Inc.
+%%
+%% This file is provided to you 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(verify_conditional_postcommit).
+-export([confirm/0, conditional_hook/3, postcommit/1]).
+-include_lib("eunit/include/eunit.hrl").
+
+confirm() ->
+    Config = [{riak_core, [{vnode_management_timer, 1000},
+                           {ring_creation_size, 4}]}],
+    Nodes = rt:deploy_nodes(1, Config),
+    Node = hd(Nodes),
+    ok = rt:load_modules_on_nodes([?MODULE], Nodes),
+
+    lager:info("Creating bucket types 'type1' and 'type2'"),
+    rt:create_and_activate_bucket_type(Node, <<"type1">>, [{magic, false}]),
+    rt:create_and_activate_bucket_type(Node, <<"type2">>, [{magic, true}]),
+
+    lager:info("Installing conditional hook"),
+    CondHook = {?MODULE, conditional_hook},
+    ok = rpc:call(Node, riak_kv_hooks, add_conditional_postcommit, [CondHook]),
+
+    Bucket1 = {<<"type1">>, <<"test">>},
+    Bucket2 = {<<"type2">>, <<"test">>},
+    Keys = [<<N:64/integer>> || N <- lists:seq(1,1000)],
+    PBC = rt:pbc(Node),
+
+    lager:info("Writing keys as 'type1' and verifying hook is not triggered"),
+    write_keys(Node, PBC, Bucket1, Keys, false), 
+
+    lager:info("Writing keys as 'type2' and verifying hook is triggered"),
+    write_keys(Node, PBC, Bucket2, Keys, true),
+
+    lager:info("Removing conditional hook"),
+    ok = rpc:call(Node, riak_kv_hooks, del_conditional_postcommit, [CondHook]),
+    lager:info("Re-writing keys as 'type2' and verifying hook is not triggered"),
+    write_keys(Node, PBC, Bucket2, Keys, false),
+    pass.
+
+write_keys(Node, PBC, Bucket, Keys, ShouldHook) ->
+    rpc:call(Node, application, set_env, [riak_kv, hook_count, 0]),
+    [ok = rt:pbc_write(PBC, Bucket, Key, Key) || Key <- Keys],
+    {ok, Count} = rpc:call(Node, application, get_env, [riak_kv, hook_count]),
+    case ShouldHook of
+        true ->
+            ?assertEqual(length(Keys), Count);
+        false ->
+            ?assertEqual(0, Count)
+    end,
+    ok.
+
+conditional_hook(_BucketType, _Bucket, BucketProps) ->
+    case lists:member({magic, true}, BucketProps) of
+        true ->
+            {struct, [{<<"mod">>, atom_to_binary(?MODULE, utf8)},
+                      {<<"fun">>, <<"postcommit">>}]};
+        false ->
+            false
+    end.
+
+postcommit(_Obj) ->
+    {ok, Count} = application:get_env(riak_kv, hook_count),
+    application:set_env(riak_kv, hook_count, Count + 1),
+    ok.