[perf-web] Allow setting a time adjustment for a machine

[Owen Taylor <otaylor src gnome org>]

commit 5b945aba2c1ac6a72c701fccd181f24acd1c0814
Author: Owen W. Taylor <otaylor fishsoup net>
Date:   Fri Jul 25 15:21:31 2014 +0200

    Allow setting a time adjustment for a machine
    
    The clock on the one current controller is off by 8 hours for some
    reason; since I can't currently get there to investigate, add a config
    key to allow adjusting incoming pull times by a fixed number of seconds.

 config/machines/tartini.conf |    2 ++
 metrics/config.py            |    6 ++++++
 metrics/views.py             |    1 +
 3 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/config/machines/tartini.conf b/config/machines/tartini.conf
index fd6334a..c61ce25 100644
--- a/config/machines/tartini.conf
+++ b/config/machines/tartini.conf
@@ -5,6 +5,8 @@ summary=i5-2500K, 16GB memory
 cpu=Intel Core i5-2500K CPU @ 3.30GHz
 graphics=Intel HD Graphics 3000
 memory=16GiB
+# Temporary workaround until why the time isn't coming from NTP can be investigated
+time_adjust_sec=-28800
 
 [partition tartini/ext4-ssd]
 filesystem=ext4
diff --git a/metrics/config.py b/metrics/config.py
index 9575dfe..09fd638 100644
--- a/metrics/config.py
+++ b/metrics/config.py
@@ -113,6 +113,12 @@ class Machine(ConfigObject):
         self.cpu = parser.get(section, 'cpu')
         self.graphics = parser.get(section, 'graphics')
         self.memory = parser.get(section, 'memory')
+        # Time to adjust pull_times with - this is a workaround for a temporarily
+        # inacessible control server that is not tracking time properly
+        try:
+            self.time_adjust_sec = int(parser.get(section, 'time_adjust_sec'))
+        except ConfigParser.NoOptionError, e:
+            self.time_adjust_sec = 0
 
 class Metric(ConfigObject):
     def _load(self, parser, section):
diff --git a/metrics/views.py b/metrics/views.py
index 5140714..57f7d4b 100644
--- a/metrics/views.py
+++ b/metrics/views.py
@@ -331,6 +331,7 @@ def process_report(data, machine_name):
     pull_time_str = child_string(data, 'pullTime')
     try:
         pull_time = datetime.strptime(pull_time_str, '%Y-%m-%d %H:%M:%S').replace(tzinfo=timezone.utc)
+        pull_time = pull_time + timedelta(seconds=partition.machine.time_adjust_sec)
     except ValueError:
         raise ValidationError("Can't parse property 'pullTime'")