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Cache and re-use generated snapshot #165

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Merged
merged 1 commit into from
Jun 2, 2019
Merged

Cache and re-use generated snapshot #165

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10 changes: 10 additions & 0 deletions instana/meter.py
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,10 @@ class Meter(object):
# We send Snapshot data every 10 minutes. This is the countdown variable.
snapshot_countdown = 0

# Collect the Snapshot only once and store the resulting Snapshot object here.
# We use this for every repeated snapshot send (every 10 minutes)
cached_snapshot = None

last_usage = None
last_collect = None
last_metrics = None
Expand Down Expand Up @@ -240,6 +244,9 @@ def handle_agent_tasks(self, task):
def collect_snapshot(self):
""" Collects snapshot related information to this process and environment """
try:
if self.cached_snapshot is not None:
return self.cached_snapshot

if "INSTANA_SERVICE_NAME" in os.environ:
appname = os.environ["INSTANA_SERVICE_NAME"]
elif "FLASK_APP" in os.environ:
Expand All @@ -260,6 +267,9 @@ def collect_snapshot(self):
djmw=self.djmw)
s.version = sys.version
s.versions = self.collect_modules()

# Cache the snapshot
self.cached_snapshot = s
except Exception as e:
logger.debug(e.message)
else:
Expand Down