logger: Rework configuration of logger

Most logger configuration that was possible through
kernel application variables have been moved into a
common 'logger' application environment in kernel.

Now all the configuration possible through the logger
API can be done as sys config.

The handler started by kernel has been renamed to 'default'
instead of logger_std_h.

There is a new logger:setup_handlers/1 function that given an
application name can be used to setup handlers in other applications.

1 files changed, 82 insertions, 0 deletions

diff --git a/lib/kernel/test/logger_test_lib.erl b/lib/kernel/test/logger_test_lib.erl
new file mode 100644
index 0000000000..4ac05e6480
--- /dev/null
+++ b/lib/kernel/test/logger_test_lib.erl
@@ -0,0 +1,82 @@
+%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2018. 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.
+%%
+%% %CopyrightEnd%
+%%
+-module(logger_test_lib).
+
+-include_lib("kernel/src/logger_internal.hrl").
+
+-export([setup/2, log/3, sync_and_read/3]).
+
+-export([init/2,
+         pre_init_per_suite/3, pre_init_per_testcase/4,
+         post_end_per_testcase/5, post_end_per_suite/3]).
+
+setup(Config,Vars) ->
+    FuncStr = lists:concat([proplists:get_value(suite, Config), "_",
+                            proplists:get_value(tc, Config)]),
+    ConfigFileName = filename:join(proplists:get_value(priv_dir, Config), FuncStr),
+    file:write_file(ConfigFileName ++ ".config", io_lib:format("[{kernel, ~p}].",[Vars])),
+    case test_server:start_node(proplists:get_value(tc, Config), slave,
+                                [{args, ["-pa ",filename:dirname(code:which(?MODULE)),
+                                         " -boot start_sasl -kernel start_timer true "
+                                         "-config ",ConfigFileName]}]) of
+        {ok, Node} ->
+            L = rpc:call(Node, logger, i, []),
+            ct:log("~p",[L]),
+            {ok, L, Node};
+        {error, Reason} ->
+            ct:log("Failed to start node: ~p",[Reason]),
+            error
+    end.
+
+log(Node, F, A) ->
+    log(Node, logger, F, A).
+log(Node, M, F, A) ->
+    MD = #{ gl => rpc:call(Node, erlang, whereis, [logger]) },
+    rpc:call(Node, M, F, A ++ [MD]).
+
+sync_and_read(Node,disk_log,Log) ->
+    rpc:call(Node,logger_disk_log_h,disk_log_sync,[?STANDARD_HANDLER]),
+    file:read_file(Log ++ ".1");
+sync_and_read(Node, file,Log) ->
+    ok = rpc:call(Node,logger_std_h,filesync,[?STANDARD_HANDLER]),
+    file:read_file(Log).
+
+
+init(_, _) ->
+    {ok, []}.
+
+pre_init_per_suite(_Suite, Config, State) ->
+    {[{nodes, nodes()} | Config], State}.
+
+pre_init_per_testcase(Suite, TC, Config, State) ->
+    cleanup(Config),
+    {[{suite, Suite}, {tc, TC} | Config], State}.
+
+post_end_per_testcase(_, _TC, Config, Res, State) ->
+    cleanup(Config),
+    {Res, State}.
+
+post_end_per_suite(_, Config, State) ->
+    cleanup(Config),
+    {Config, State}.
+
+cleanup(Config) ->
+    [test_server:stop_node(N) || N <- nodes(),
+                                 not lists:member(N, proplists:get_value(nodes, Config))].