proxmox backup server task log json to ical converter

gistfile1.txt

"""
requirement: pip install ics

usage:
# proxmox-backup-manager task list --all --limit 1000 --output-format json | python3 ./taskcal.py - > hostname.ics
"""
import sys
import json
from ics import Calendar, Event

if len(sys.argv) < 2:
    raise Exception("Usage: taskcal.py <input json file>")

if sys.argv[1] == '-':
    tasks=json.load(sys.stdin)
else:
    with open(sys.argv[1], 'r') as f:
        tasks = json.load(f)

c = Calendar()
for task in tasks:
    if task['worker_type'] == 'aptupdate' or task['worker_type'] == 'logrotate':
        continue

    e = Event()
    e.name = task['worker_type'] + " (" + task['upid'].split(':')[8].split('@')[0] + ")"
    e.description = task['upid']
    e.begin = task['starttime']
    e.end = task['endtime']

    candidates = c.timeline.overlapping(e.begin.shift(minutes=-15), e.end.shift(minutes=+15))
    found = False
    for candidate in candidates:
        if candidate.name == e.name:
            if candidate.begin > e.begin:
                candidate.begin = e.begin
            if candidate.end < e.end:
                candidate.end = e.end;

            found = True
            break;

    if not found:
        c.events.add(e)

sys.stdout.writelines(c.serialize_iter())