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onyl fetch available ROS version once per hour

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This commit is contained in:
Leon Morten Richter
2023-05-30 11:07:12 +02:00
parent fb54356220
commit 7d63fcba85
1 changed files with 16 additions and 3 deletions
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19
mktxp/utils/utils.py
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@@ -11,8 +11,10 @@
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details. ## GNU General Public License for more details.
from functools import lru_cache
import os, sys, shlex, tempfile, shutil, re import os, sys, shlex, tempfile, shutil, re
import subprocess, hashlib, urllib import subprocess, hashlib, urllib
import time
from timeit import default_timer from timeit import default_timer
from collections.abc import Iterable from collections.abc import Iterable
import xml.etree.ElementTree as ET import xml.etree.ElementTree as ET
@@ -281,12 +283,21 @@ CHANNEL_RSS_FEED_MAPPING = {
} }
def get_available_updates(channel): def get_ttl_hash(seconds=3600):
"""Return the same value withing `seconds` time period"""
return round(time.time() / seconds)
@lru_cache(maxsize=5)
def get_available_updates(channel, ttl_hash=get_ttl_hash()):
"""Check the RSS feed for available updates for a given update channel. """Check the RSS feed for available updates for a given update channel.
This method fetches the RSS feed and yields all version from the parsed XML. This method fetches the RSS feed and returns all version from the parsed XML.
Version numbers are parsed into version.Version instances (part of setuptools).""" Version numbers are parsed into version.Version instances (part of setuptools)."""
del ttl_hash
rss_feed = CHANNEL_RSS_FEED_MAPPING[channel] rss_feed = CHANNEL_RSS_FEED_MAPPING[channel]
print(f'Fetching available ROS releases from {rss_feed}')
versions = []
with urllib.request.urlopen(rss_feed) as response: with urllib.request.urlopen(rss_feed) as response:
result = response.read() result = response.read()
root = ET.fromstring(result) root = ET.fromstring(result)
@@ -299,7 +310,9 @@ def get_available_updates(channel):
# extract and parse the version number from title # extract and parse the version number from title
version_text = re.findall(r'[\d+\.]+', title.text)[0] version_text = re.findall(r'[\d+\.]+', title.text)[0]
version_number = packaging.version.parse(version_text) version_number = packaging.version.parse(version_text)
yield version_number versions.append(version_number)
return versions
def parse_ros_version(string): def parse_ros_version(string):
"""Parse the version returned from the /system/resource command. """Parse the version returned from the /system/resource command.