fixeria has uploaded this change for review.

View Change

config/sys.config: print prefix before msg, if present

It's sometimes desirable to add some context to logging messages,
like the FSM name and identifier, for instance.  With this patch,
this can be easily achieved by passing an arbitrary prefix string
to a logging function/macro:

  %% EXAMPLE: adding metadata to a specific log macro
  ?LOG_INFO("The planet is fine...", #{prefix = "EARTH"}).

or by setting it for all logging of a process:

  %% EXAMPLE: adding context for the whole process
  logger:set_process_metadata(#{prefix => "E-RAB FSM"}).

Change-Id: Ib88801b8d38976b98a02ed06e1638e0e9056bafb
---
M config/sys.config
1 file changed, 23 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/erlang/osmo-s1gw refs/changes/27/37327/1

diff --git a/config/sys.config b/config/sys.config
index 5ccd43d..cf8ff34 100644
--- a/config/sys.config
+++ b/config/sys.config
@@ -27,6 +27,7 @@
                                    single_line => false,
                                    template => [time, " ", color, "[", level, "]",
                                                 {pid, [" ", pid, ""], ""},
+                                                {prefix, [" ", prefix, " ::"], ""},
                                                 " ", msg,
                                                 {mfa, [" (", mfa, ":", line, ")"], ""},
                                                 reset, "\n"]}}}}]}]}].

To view, visit change 37327. To unsubscribe, or for help writing mail filters, visit settings.