# HG changeset patch
# User Matt DeVore <matvore@google.com>
# Date 1539816481 25200
# Node ID 25f1c7bd649d2ae4ef6fd21a39cafaad81418c8f
# Parent  5d8f291405e5a0025620805a366feb887f1e8804
blackbox: add configitem for format of log timestamps

Sometimes blackbox logs are used to report performance problems, but the
timestamps are only at second granularity, so often the timings have to
stated separately by the reporter. This is inconvenient and error-prone,
so I would like to include %f in the date format. This patch makes that
possible.

diff -r 5d8f291405e5 -r 25f1c7bd649d hgext/blackbox.py
--- a/hgext/blackbox.py	Tue Oct 23 14:04:17 2018 -0700
+++ b/hgext/blackbox.py	Wed Oct 17 15:48:01 2018 -0700
@@ -33,6 +33,11 @@
   # rotate up to N log files when the current one gets too big
   maxfiles = 3
 
+  [blackbox]
+  # Include nanoseconds in log entries with %f (see Python function
+  # datetime.datetime.strftime)
+  date-format = '%Y-%m-%d @ %H:%M:%S.%f'
+
 """
 
 from __future__ import absolute_import
@@ -82,6 +87,9 @@
 configitem('blackbox', 'track',
     default=lambda: ['*'],
 )
+configitem('blackbox', 'date-format',
+    default='%Y/%m/%d %H:%M:%S',
+)
 
 lastui = None
 
@@ -169,7 +177,8 @@
                 return
             ui._bbinlog = True
             default = self.configdate('devel', 'default-date')
-            date = dateutil.datestr(default, '%Y/%m/%d %H:%M:%S')
+            date = dateutil.datestr(default,
+                                    ui.config('blackbox', 'date-format'))
             user = procutil.getuser()
             pid = '%d' % procutil.getpid()
             formattedmsg = msg[0] % msg[1:]
diff -r 5d8f291405e5 -r 25f1c7bd649d tests/test-blackbox.t
--- a/tests/test-blackbox.t	Tue Oct 23 14:04:17 2018 -0700
+++ b/tests/test-blackbox.t	Wed Oct 17 15:48:01 2018 -0700
@@ -82,6 +82,16 @@
   1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000 (5000)> so-confusing exited 0 after * seconds (glob)
   1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000 (5000)> blackbox
 
+custom date format
+  $ rm ./.hg/blackbox.log
+  $ hg --config blackbox.date-format='%Y-%m-%d @ %H:%M:%S' \
+  >    --config devel.default-date='1334347993 0' --traceback status
+  A a
+  $ hg blackbox
+  2012-04-13 @ 20:13:13 bob @0000000000000000000000000000000000000000 (5000)> --config 'blackbox.date-format=%Y-%m-%d @ %H:%M:%S' --config 'devel.default-date=1334347993 0' --traceback status
+  2012-04-13 @ 20:13:13 bob @0000000000000000000000000000000000000000 (5000)> --config 'blackbox.date-format=%Y-%m-%d @ %H:%M:%S' --config 'devel.default-date=1334347993 0' --traceback status exited 0 after * seconds (glob)
+  1970/01/01 00:00:00 bob @0000000000000000000000000000000000000000 (5000)> blackbox
+
 incoming change tracking
 
 create two heads to verify that we only see one change in the log later