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cfbot_commitfest_rpc.py
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#!/usr/bin/env python
#
# Routines that interface with the Commitfest app.
# For now these use webscraping, but they could become real API calls.
import cfbot_config
import cfbot_util
import html
# from html.parser import HTMLParser
import re
class Submission:
"""A submission in a Commitfest."""
def __init__(
self, submission_id, commitfest_id, name, status, authors, last_email_time
):
self.id = int(submission_id)
self.commitfest_id = commitfest_id
self.name = name
self.status = status
self.authors = authors
self.last_email_time = last_email_time
self.build_results = []
def __str__(self):
return str(
[self.id, self.name, self.status, self.authors, self.last_email_time]
)
def get_latest_patches_from_thread_url(thread_url):
"""Given a 'whole thread' URL from the archives, find the last message that
had at least one attachment called something.patch. Return the message
ID and the list of URLs to fetch all the patches."""
selected_message_attachments = []
selected_message_id = None
message_attachments = []
message_id = None
for line in cfbot_util.slow_fetch(thread_url).splitlines():
groups = re.search(
'<a href="(/message-id/attachment/[^"]*\\.(diff|diff\\.gz|patch|patch\\.gz|tar\\.gz|tgz|tar\\.bz2|zip))">',
line,
)
if groups and not groups.group(1).endswith("subtrans-benchmark.tar.gz"):
message_attachments.append("https://www.postgresql.org" + groups.group(1))
selected_message_attachments = message_attachments
selected_message_id = message_id
# groups = re.search('<a name="([^"]+)"></a>', line)
groups = re.search('<td><a href="/message-id/[^"]+">([^"]+)</a></td>', line)
if groups:
message_id = groups.group(1)
message_attachments = []
# if there is a tarball attachment, there must be only one attachment,
# otherwise give up on this thread (we don't know how to combine patches and
# tarballs)
if selected_message_attachments is not None:
if any(
x.endswith(".tgz") or x.endswith(".tar.gz") or x.endswith(".tar.bz2")
for x in selected_message_attachments
):
if len(selected_message_attachments) > 1:
selected_message_id = None
selected_message_attachments = None
# if there are multiple patch files, they had better follow the convention
# of leading numbers, otherwise we don't know how to apply them in the right
# order
return selected_message_id, selected_message_attachments
def get_thread_url_for_submission(commitfest_id, submission_id):
"""Given a Commitfest ID and a submission ID, return the URL of the 'whole
thread' page in the mailing list archives."""
# find all the threads and latest message times
result = None
url = f"{cfbot_config.COMMITFEST_HOST}/patch/{submission_id}/"
candidates = []
candidate = None
for line in cfbot_util.slow_fetch(url).splitlines():
groups = re.search(
"""Latest at <a href="https://www.postgresql.org/message-id/([^"]+)">(2[^<]+)""",
line,
)
if groups:
candidate = (groups.group(2), groups.group(1))
# we'll only take threads that are followed by evidence that there is at least one attachment
groups = re.search("""Latest attachment .* <button type="button" """, line)
if groups:
candidates.append(candidate)
# take the one with the most recent email
if len(candidates) > 0:
candidates.sort()
result = "https://www.postgresql.org/message-id/flat/" + candidates[-1][1]
return result
def get_submissions_for_commitfest(commitfest_id):
"""Given a Commitfest ID, return a list of Submission objects."""
result = []
# parser = HTMLParser()
url = f"{cfbot_config.COMMITFEST_HOST}/{commitfest_id}/"
next_line_has_version = False
next_line_has_latest_email = False
state = None
latest_email = None
authors = ""
td_count = 0
for line in cfbot_util.slow_fetch(url).splitlines():
# maybe it's easier to count rows and columns
if re.search("<tr>", line):
td_count = 0
continue
if re.search("<td>", line):
td_count += 1
groups = re.search('<a href="/patch/([0-9]+)/">([^<]+)</a>', line)
if groups:
submission_id = groups.group(1)
name = html.unescape(groups.group(2))
continue
if next_line_has_version:
next_line_has_version = False
continue
if td_count == 6:
groups = re.search("<td>([^<]*)</td>", line)
if groups:
authors = groups.group(1)
authors = re.sub(" *\\([^)]*\\)", "", authors)
continue
if next_line_has_latest_email:
next_line_has_latest_email = False
groups = re.search(
'<td style="white-space: nowrap;">(.*)<br/>(.*)</td>', line
)
if groups:
latest_email = groups.group(1) + " " + groups.group(2)
if latest_email == " ":
latest_email = None
result.append(
Submission(
submission_id,
commitfest_id,
name,
state,
authors.split(", "),
latest_email,
)
)
groups = re.search(
'<td><span class="label label-[^"]*">([^<]+)</span></td>', line
)
if groups:
state = groups.group(1)
next_line_has_version = True
continue
groups = re.search('<td style="white-space: nowrap;" title="([^"]+)">', line)
if groups:
latest_email = groups.group(1)
result.append(
Submission(
submission_id,
commitfest_id,
name,
state,
authors.split(", "),
latest_email,
)
)
return result
def get_current_commitfest_id():
"""Find the ID of the current open or next future Commitfest."""
result = None
for line in cfbot_util.slow_fetch(cfbot_config.COMMITFEST_HOST).splitlines():
groups = re.search(
'<a href="/([0-9]+)/">[0-9]+-[0-9]+</a> \((Open|In Progress) ', line
)
if groups:
commitfest_id = groups.group(1)
groups.group(2)
result = int(commitfest_id)
if result is None:
raise Exception("Could not determine the current Commitfest ID")
return result
if __name__ == "__main__":
for sub in get_submissions_for_commitfest(get_current_commitfest_id()):
print(str(sub))
# print get_thread_url_for_submission(19, 1787)
# print(get_latest_patches_from_thread_url(get_thread_url_for_submission(37, 2901)))