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BUG=b:233893248
TEST=CQ

Change-Id: I66591d7a738d241aed3290138c0f68065ab10a6d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3879174
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Alex Klein <saklein@chromium.org>
diff --git a/scripts/sysmon/mainlib.py b/scripts/sysmon/mainlib.py
index 498a3d6..261ab39 100644
--- a/scripts/sysmon/mainlib.py
+++ b/scripts/sysmon/mainlib.py
@@ -27,72 +27,73 @@
 
 
 class _MetricCollector(object):
-  """Metric collector class."""
+    """Metric collector class."""
 
-  def __init__(self):
-    self._collect_osinfo = _TimedCallback(
-        callback=osinfo_metrics.collect_os_info,
-        interval=60 * 60)
+    def __init__(self):
+        self._collect_osinfo = _TimedCallback(
+            callback=osinfo_metrics.collect_os_info, interval=60 * 60
+        )
 
-  def __call__(self):
-    """Collect metrics."""
-    system_metrics.collect_uptime()
-    system_metrics.collect_cpu_info()
-    system_metrics.collect_disk_info()
-    system_metrics.collect_mem_info()
-    net_metrics.collect_net_info()
-    proc_metrics.collect_proc_info()
-    system_metrics.collect_load_avg()
-    puppet_metrics.collect_puppet_summary()
-    git_metrics.collect_git_metrics()
-    self._collect_osinfo()
-    system_metrics.collect_unix_time()  # must be just before flush
-    metrics.Flush()
+    def __call__(self):
+        """Collect metrics."""
+        system_metrics.collect_uptime()
+        system_metrics.collect_cpu_info()
+        system_metrics.collect_disk_info()
+        system_metrics.collect_mem_info()
+        net_metrics.collect_net_info()
+        proc_metrics.collect_proc_info()
+        system_metrics.collect_load_avg()
+        puppet_metrics.collect_puppet_summary()
+        git_metrics.collect_git_metrics()
+        self._collect_osinfo()
+        system_metrics.collect_unix_time()  # must be just before flush
+        metrics.Flush()
 
 
 class _TimedCallback(object):
-  """Limits callback to one call in a given interval."""
+    """Limits callback to one call in a given interval."""
 
-  def __init__(self, callback, interval):
-    """Initialize instance.
+    def __init__(self, callback, interval):
+        """Initialize instance.
 
-    Args:
-      callback: function to call
-      interval: Number of seconds between allowed calls
-    """
-    self._callback = callback
-    self._interval = interval
-    self._last_called = float('-inf')
+        Args:
+          callback: function to call
+          interval: Number of seconds between allowed calls
+        """
+        self._callback = callback
+        self._interval = interval
+        self._last_called = float("-inf")
 
-  def __call__(self):
-    if time.time() >= self._next_call:
-      self._callback()
-      self._last_called = time.time()
+    def __call__(self):
+        if time.time() >= self._next_call:
+            self._callback()
+            self._last_called = time.time()
 
-  @property
-  def _next_call(self):
-    return self._last_called + self._interval
+    @property
+    def _next_call(self):
+        return self._last_called + self._interval
 
 
 def main():
-  parser = commandline.ArgumentParser(
-      description=__doc__,
-      default_log_level='DEBUG')
-  parser.add_argument(
-      '--interval',
-      default=60,
-      type=int,
-      help='time (in seconds) between sampling system metrics')
-  opts = parser.parse_args()
-  opts.Freeze()
+    parser = commandline.ArgumentParser(
+        description=__doc__, default_log_level="DEBUG"
+    )
+    parser.add_argument(
+        "--interval",
+        default=60,
+        type=int,
+        help="time (in seconds) between sampling system metrics",
+    )
+    opts = parser.parse_args()
+    opts.Freeze()
 
-  # This call returns a context manager that doesn't do anything, so we
-  # ignore the return value.
-  ts_mon_config.SetupTsMonGlobalState('sysmon', auto_flush=False)
-  # The default prefix is '/chrome/infra/'.
-  interface.state.metric_name_prefix = (interface.state.metric_name_prefix
-                                        + 'chromeos/sysmon/')
+    # This call returns a context manager that doesn't do anything, so we
+    # ignore the return value.
+    ts_mon_config.SetupTsMonGlobalState("sysmon", auto_flush=False)
+    # The default prefix is '/chrome/infra/'.
+    interface.state.metric_name_prefix = (
+        interface.state.metric_name_prefix + "chromeos/sysmon/"
+    )
 
-  collector = _MetricCollector()
-  loop.SleepLoop(callback=collector,
-                 interval=opts.interval).loop_forever()
+    collector = _MetricCollector()
+    loop.SleepLoop(callback=collector, interval=opts.interval).loop_forever()