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use a better heuristic for the apt update last run time #184

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merged 1 commit into from
Oct 18, 2023
Merged

use a better heuristic for the apt update last run time #184

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11 changes: 10 additions & 1 deletion apt_info.py
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
# Daniel Swarbrick <[email protected]>

import apt
import apt_pkg
import collections
import os
from prometheus_client import CollectorRegistry, Gauge, generate_latest
Expand Down Expand Up @@ -87,8 +88,16 @@ def _write_autoremove_pending(registry, cache):

def _write_cache_timestamps(registry):
g = Gauge('apt_package_cache_timestamp_seconds', "Apt update last run time.", registry=registry)
apt_pkg.init_config()
if apt_pkg.config.find_b("APT::Periodic::Update-Package-Lists"):
# if we run updates automatically with APT::Periodic, we can
# check this timestamp file
stamp_file = "/var/lib/apt/periodic/update-success-stamp"
else:
# if not, let's just fallback on the lists directory
stamp_file = '/var/lib/apt/lists'
try:
g.set(os.stat('/var/cache/apt/pkgcache.bin').st_mtime)
g.set(os.stat(stamp_file).st_mtime)
except OSError:
pass

Expand Down