valitydev/riak_test
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This commit is contained in:
andytill 2016-12-14 16:59:41 +00:00
parent 04e468d6b5
commit 38517cf2c7
1 changed files with 10 additions and 2 deletions
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12
src/rt_redbug.erl
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@ -42,6 +42,8 @@ set_tracing_applied(TracingApplied) when is_boolean(TracingApplied) ->
is_tracing_applied() ->
(catch ets:lookup_element(rt_trace_tab, apply_traces, 2)) == true.
%% Apply traces to one or more nodes using redbug tracing and syntax.
%%
%% eper documentation for the redbug trace string and options is here:
%%
%% https://github.com/massemanet/eper/blob/master/doc/redbug.txt
@ -51,8 +53,15 @@ is_tracing_applied() ->
%% http://roberto-aloi.com/erlang/profiling-erlang-applications-using-redbug
%%
%% Set a trace on a function
%% "riak_kv_qry_compiler:compile"
%% rt_redbug:trace(Node, "riak_kv_qry_compiler:compile").
%% rt_redbug:trace(Node, ["riak_kv_qry_compiler:compile", "riak_ql_parser:parse"]).
%%
%% Multiple traces can be set in one call. Calling the `rt_redbug:trace`
%% function a second time stops the traces started by the first call.
%%
%% Traces can be stopped by calling `rt_redbug:stop(Nodes)` with the nodes in
%% the test cluster. This is important if there are multiple tests in the same
%% suite, but not if the cluster is torn down at the end of the suite.
trace(Nodes, TraceStrings) ->
trace(Nodes, TraceStrings, []).
@ -68,7 +77,6 @@ trace(Nodes, TraceStrings, Options1) when (is_atom(Nodes) orelse is_list(Nodes))
%%
apply_trace(Node, TraceString, Options) ->
lager:info("APPLY TRACE ~p", [TraceString]),
rpc:call(Node, redbug, start, [TraceString, Options]).
%%