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119229cce7
This adds a new script - cleanup-needles.py - to use for cleaning up old needles. It has to be used in conjunction with a database query; the comment at the top explains how to do that query and export the needed information. It produces a git commit with needles that haven't matched since a certain date (specified in the sql query) removed, subject to a 'keeplist' of needles we keep even if they seem to be old. I also enhanced check-needles.py to check for cases where tests seem to be trying to match a tag we have no needles for. This was necessary to find cases where the cleanup script was too aggressive (i.e. the things that wound up in the 'keeplist'), but it also turned out to find quite a lot of cases where the code really *was* looking for a needle that had gone in a previous cleanup or that never existed; the commits before this one clean up a lot of those cases. The code to decide which string literals are needle tags is pretty dumb and hacky and needs some manual cueing sometimes - that's what the `# testtag` changes in this commit are for. Making it smarter would probably require this script to get a lot more complicated and either incorporate or become a tokenizer, which I don't really want to do. Signed-off-by: Adam Williamson <awilliam@redhat.com>
78 lines
2.6 KiB
Python
Executable File
78 lines
2.6 KiB
Python
Executable File
#!/usr/bin/python3
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"""Dumb script for staging an old needle cleanup.
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First, log in to the stg server (always use stg because some needles may
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only be used on Power) and do this:
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psql -h db-openqa01.iad2.fedoraproject.org -U openqastg -d openqa-stg -W
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and enter the password (from /etc/openqa/database.ini). Now do this,
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changing the date in the `select` command to an appropriate one - a few
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months before the current date:
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\o oldneedles.txt
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select filename from needles where date_trunc('day', last_matched_time) < '2023-01-01' or last_matched_time is null;
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ctrl-d (to quit)
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now copy oldneedles.txt off the server, and run this script on it. It will
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stage a git commit that removes all the identified needles.
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"""
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import datetime
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import os
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import subprocess
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import sys
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try:
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fname = sys.argv[1]
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except IndexError:
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sys.exit("You must pass the file with the query output as the argument!")
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with open(fname, "r", encoding="utf-8") as fh:
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lines = fh.readlines()
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# strip the column name and underlines
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lines = lines[2:]
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# needles we know we want to keep around: these are ones that are
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# encountered very rarely, but which *do* have a legitimate reason
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# to exist. often the exact needle we have would not match any more
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# anyway, but keeping it around prevents check-needles.py from
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# complaining, and gives us a template to create a working needle
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# from the next time we encounter the rare situation
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keeplist = (
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# 'system crashes to emergency mode / dracut' cases
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"emergency_rescue_nopassword",
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"root_logged_in-dracut",
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# text install just doesn't fail this way very often
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"anaconda_main_hub_text_unfinished",
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# upgrade tests don't fail on system-upgrade reboot very often
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"upgrade_fail",
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# text install just doesn't fail very often
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"anaconda_text_error",
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)
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changed = False
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for line in lines:
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# query output lines start with a space, when we hit one that does
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# not, we've done all the query output lines and can quit
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if not line.startswith(" "):
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break
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line = line.strip()
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if any(keep in line for keep in keeplist):
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continue
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line = f"needles/{line}"
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# the db has needles we deleted before in it, so let's not bother
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# trying to remove them again
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if os.path.exists(line):
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basename = line[:-4]
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command = ("git", "rm", f"{basename}json", f"{basename}png")
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subprocess.run(command)
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changed = True
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# create the commit
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if changed:
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today = datetime.date.today().strftime("%Y-%m-%d")
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command = ("git", "commit", "-a", "-s", "-m", f"Old needle cleanup {today}")
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subprocess.run(command)
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else:
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print("Nothing to do!")
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sys.exit()
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