mirror of https://github.com/zulip/zulip.git
67 lines
2.6 KiB
Python
67 lines
2.6 KiB
Python
import os
|
|
import ujson
|
|
from typing import Any, Iterator
|
|
|
|
from django.core.management.base import BaseCommand, CommandParser
|
|
from django.db.models import QuerySet
|
|
|
|
from zerver.lib.message import render_markdown
|
|
from zerver.models import Message
|
|
|
|
|
|
def queryset_iterator(queryset, chunksize=5000):
|
|
# type: (QuerySet, int) -> Iterator[Any]
|
|
queryset = queryset.order_by('id')
|
|
while queryset.exists():
|
|
for row in queryset[:chunksize]:
|
|
msg_id = row.id
|
|
yield row
|
|
queryset = queryset.filter(id__gt=msg_id)
|
|
|
|
|
|
class Command(BaseCommand):
|
|
help = """
|
|
Render messages to a file.
|
|
Usage: ./manage.py render_messages <destination> [--amount=10000]
|
|
"""
|
|
|
|
def add_arguments(self, parser):
|
|
# type: (CommandParser) -> None
|
|
parser.add_argument('destination', help='Destination file path')
|
|
parser.add_argument('--amount', default=100000, help='Number of messages to render')
|
|
parser.add_argument('--latest_id', default=0, help="Last message id to render")
|
|
|
|
def handle(self, *args, **options):
|
|
# type: (*Any, **Any) -> None
|
|
dest_dir = os.path.realpath(os.path.dirname(options['destination']))
|
|
amount = int(options['amount'])
|
|
latest = int(options['latest_id']) or Message.objects.latest('id').id
|
|
self.stdout.write('Latest message id: {latest}'.format(latest=latest))
|
|
if not os.path.exists(dest_dir):
|
|
os.makedirs(dest_dir)
|
|
|
|
with open(options['destination'], 'w') as result:
|
|
result.write('[')
|
|
messages = Message.objects.filter(id__gt=latest - amount, id__lte=latest).order_by('id')
|
|
for message in queryset_iterator(messages):
|
|
content = message.content
|
|
# In order to ensure that the output of this tool is
|
|
# consistent across the time, even if messages are
|
|
# edited, we always render the original content
|
|
# version, extracting it from the edit history if
|
|
# necessary.
|
|
if message.edit_history:
|
|
history = ujson.loads(message.edit_history)
|
|
history = sorted(history, key=lambda i: i['timestamp'])
|
|
for entry in history:
|
|
if 'prev_content' in entry:
|
|
content = entry['prev_content']
|
|
break
|
|
result.write(ujson.dumps({
|
|
'id': message.id,
|
|
'content': render_markdown(message, content)
|
|
}))
|
|
if message.id != latest:
|
|
result.write(',')
|
|
result.write(']')
|