u-boot/tools/patman/patchwork.py
Simon Glass 42588591e2 patman: Enhance patchwork interface to support Cseries
Add various new requests to the Patchwork class, so we can obtain the
required information. This includes cover letters and comments.

Signed-off-by: Simon Glass <sjg@chromium.org>
2025-05-27 10:07:42 +01:00

853 lines
35 KiB
Python

# SPDX-License-Identifier: GPL-2.0+
#
# Copyright 2025 Simon Glass <sjg@chromium.org>
#
"""Provides a basic API for the patchwork server
"""
import asyncio
import re
import aiohttp
from collections import namedtuple
from u_boot_pylib import terminal
# Information passed to series_get_states()
# link (str): Patchwork link for series
# series_id (int): Series ID in database
# series_name (str): Series name
# version (int): Version number of series
# show_comments (bool): True to show comments
# show_cover_comments (bool): True to show cover-letter comments
STATE_REQ = namedtuple(
'state_req',
'link,series_id,series_name,version,show_comments,show_cover_comments')
# Responses from series_get_states()
# int: ser_ver ID number
# COVER: Cover-letter info
# list of Patch: Information on each patch in the series
# list of dict: patches, see get_series()['patches']
STATE_RESP = namedtuple('state_resp', 'svid,cover,patches,patch_list')
# Information about a cover-letter on patchwork
# id (int): Patchwork ID of cover letter
# state (str): Current state, e.g. 'accepted'
# num_comments (int): Number of comments
# name (str): Series name
# comments (list of dict): Comments
COVER = namedtuple('cover', 'id,num_comments,name,comments')
# Number of retries
RETRIES = 3
# Max concurrent request
MAX_CONCURRENT = 50
# Patches which are part of a multi-patch series are shown with a prefix like
# [prefix, version, sequence], for example '[RFC, v2, 3/5]'. All but the last
# part is optional. This decodes the string into groups. For single patches
# the [] part is not present:
# Groups: (ignore, ignore, ignore, prefix, version, sequence, subject)
RE_PATCH = re.compile(r'(\[(((.*),)?(.*),)?(.*)\]\s)?(.*)$')
# This decodes the sequence string into a patch number and patch count
RE_SEQ = re.compile(r'(\d+)/(\d+)')
class Patch(dict):
"""Models a patch in patchwork
This class records information obtained from patchwork
Some of this information comes from the 'Patch' column:
[RFC,v2,1/3] dm: Driver and uclass changes for tiny-dm
This shows the prefix, version, seq, count and subject.
The other properties come from other columns in the display.
Properties:
pid (str): ID of the patch (typically an integer)
seq (int): Sequence number within series (1=first) parsed from sequence
string
count (int): Number of patches in series, parsed from sequence string
raw_subject (str): Entire subject line, e.g.
"[1/2,v2] efi_loader: Sort header file ordering"
prefix (str): Prefix string or None (e.g. 'RFC')
version (str): Version string or None (e.g. 'v2')
raw_subject (str): Raw patch subject
subject (str): Patch subject with [..] part removed (same as commit
subject)
data (dict or None): Patch data:
"""
def __init__(self, pid, state=None, data=None, comments=None,
series_data=None):
super().__init__()
self.id = pid # Use 'id' to match what the Rest API provides
self.seq = None
self.count = None
self.prefix = None
self.version = None
self.raw_subject = None
self.subject = None
self.state = state
self.data = data
self.comments = comments
self.series_data = series_data
self.name = None
# These make us more like a dictionary
def __setattr__(self, name, value):
self[name] = value
def __getattr__(self, name):
return self[name]
def __hash__(self):
return hash(frozenset(self.items()))
def __str__(self):
return self.raw_subject
def parse_subject(self, raw_subject):
"""Parse the subject of a patch into its component parts
See RE_PATCH for details. The parsed info is placed into seq, count,
prefix, version, subject
Args:
raw_subject (str): Subject string to parse
Raises:
ValueError: the subject cannot be parsed
"""
self.raw_subject = raw_subject.strip()
mat = RE_PATCH.search(raw_subject.strip())
if not mat:
raise ValueError(f"Cannot parse subject '{raw_subject}'")
self.prefix, self.version, seq_info, self.subject = mat.groups()[3:]
mat_seq = RE_SEQ.match(seq_info) if seq_info else False
if mat_seq is None:
self.version = seq_info
seq_info = None
if self.version and not self.version.startswith('v'):
self.prefix = self.version
self.version = None
if seq_info:
if mat_seq:
self.seq = int(mat_seq.group(1))
self.count = int(mat_seq.group(2))
else:
self.seq = 1
self.count = 1
class Review:
"""Represents a single review email collected in Patchwork
Patches can attract multiple reviews. Each consists of an author/date and
a variable number of 'snippets', which are groups of quoted and unquoted
text.
"""
def __init__(self, meta, snippets):
"""Create new Review object
Args:
meta (str): Text containing review author and date
snippets (list): List of snippets in th review, each a list of text
lines
"""
self.meta = ' : '.join([line for line in meta.splitlines() if line])
self.snippets = snippets
class Patchwork:
"""Class to handle communication with patchwork
"""
def __init__(self, url, show_progress=True, single_thread=False):
"""Set up a new patchwork handler
Args:
url (str): URL of patchwork server, e.g.
'https://patchwork.ozlabs.org'
"""
self.url = url
self.fake_request = None
self.proj_id = None
self.link_name = None
self._show_progress = show_progress
self.semaphore = asyncio.Semaphore(
1 if single_thread else MAX_CONCURRENT)
self.request_count = 0
async def _request(self, client, subpath):
"""Call the patchwork API and return the result as JSON
Args:
client (aiohttp.ClientSession): Session to use
subpath (str): URL subpath to use
Returns:
dict: Json result
Raises:
ValueError: the URL could not be read
"""
# print('subpath', subpath)
self.request_count += 1
if self.fake_request:
return self.fake_request(subpath)
full_url = f'{self.url}/api/1.2/{subpath}'
async with self.semaphore:
# print('full_url', full_url)
for i in range(RETRIES + 1):
try:
async with client.get(full_url) as response:
if response.status != 200:
raise ValueError(
f"Could not read URL '{full_url}'")
result = await response.json()
# print('- done', full_url)
return result
break
except aiohttp.client_exceptions.ServerDisconnectedError:
if i == RETRIES:
raise
@staticmethod
def for_testing(func):
"""Get an instance to use for testing
Args:
func (function): Function to call to handle requests. The function
is passed a URL and is expected to return a dict with the
resulting data
Returns:
Patchwork: testing instance
"""
pwork = Patchwork(None, show_progress=False)
pwork.fake_request = func
return pwork
class _Stats:
def __init__(self, parent):
self.parent = parent
self.request_count = 0
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self.request_count = self.parent.request_count
def collect_stats(self):
"""Context manager to count requests across a range of patchwork calls
Usage:
pwork = Patchwork(...)
with pwork.count_requests() as counter:
pwork.something()
print(f'{counter.count} requests')
"""
self.request_count = 0
return self._Stats(self)
async def get_projects(self):
"""Get a list of projects on the server
Returns:
list of dict, one for each project
'name' (str): Project name, e.g. 'U-Boot'
'id' (int): Project ID, e.g. 9
'link_name' (str): Project's link-name, e.g. 'uboot'
"""
async with aiohttp.ClientSession() as client:
return await self._request(client, 'projects/')
async def _query_series(self, client, desc):
"""Query series by name
Args:
client (aiohttp.ClientSession): Session to use
desc: String to search for
Return:
list of series matches, each a dict, see get_series()
"""
query = desc.replace(' ', '+')
return await self._request(
client, f'series/?project={self.proj_id}&q={query}')
async def _find_series(self, client, svid, ser_id, version, ser):
"""Find a series on the server
Args:
client (aiohttp.ClientSession): Session to use
svid (int): ser_ver ID
ser_id (int): series ID
version (int): Version number to search for
ser (Series): Contains description (cover-letter title)
Returns:
tuple:
int: ser_ver ID (as passed in)
int: series ID (as passed in)
str: Series link, or None if not found
list of dict, or None if found
each dict is the server result from a possible series
"""
desc = ser.desc
name_found = []
# Do a series query on the description
res = await self._query_series(client, desc)
for pws in res:
if pws['name'] == desc:
if int(pws['version']) == version:
return svid, ser_id, pws['id'], None
name_found.append(pws)
# When there is no cover letter, patchwork uses the first patch as the
# series name
cmt = ser.commits[0]
res = await self._query_series(client, cmt.subject)
for pws in res:
patch = Patch(0)
patch.parse_subject(pws['name'])
if patch.subject == cmt.subject:
if int(pws['version']) == version:
return svid, ser_id, pws['id'], None
name_found.append(pws)
return svid, ser_id, None, name_found or res
async def find_series(self, ser, version):
"""Find a series based on its description and version
Args:
ser (Series): Contains description (cover-letter title)
version (int): Version number
Return: tuple:
tuple:
str: Series ID, or None if not found
list of dict, or None if found
each dict is the server result from a possible series
int: number of server requests done
"""
async with aiohttp.ClientSession() as client:
# We don't know the svid and it isn't needed, so use -1
_, _, link, options = await self._find_series(client, -1, -1,
version, ser)
return link, options
async def find_series_list(self, to_find):
"""Find the link for each series in a list
Args:
to_find (dict of svids to sync):
key (int): ser_ver ID
value (tuple):
int: Series ID
int: Series version
str: Series link
str: Series description
Return: tuple:
list of tuple, one for each item in to_find:
int: ser_ver_ID
int: series ID
int: Series version
str: Series link, or None if not found
list of dict, or None if found
each dict is the server result from a possible series
int: number of server requests done
"""
self.request_count = 0
async with aiohttp.ClientSession() as client:
tasks = [asyncio.create_task(
self._find_series(client, svid, ser_id, version, desc))
for svid, (ser_id, version, link, desc) in to_find.items()]
results = await asyncio.gather(*tasks)
return results, self.request_count
def project_set(self, project_id, link_name):
"""Set the project ID
The patchwork server has multiple projects. This allows the ID and
link_name of the relevant project to be selected
This function is used for testing
Args:
project_id (int): Project ID to use, e.g. 6
link_name (str): Name to use for project URL links, e.g. 'uboot'
"""
self.proj_id = project_id
self.link_name = link_name
async def get_series(self, client, link):
"""Read information about a series
Args:
client (aiohttp.ClientSession): Session to use
link (str): Patchwork series ID
Returns: dict containing patchwork's series information
id (int): series ID unique across patchwork instance, e.g. 3
url (str): Full URL, e.g.
'https://patchwork.ozlabs.org/api/1.2/series/3/'
web_url (str): Full URL, e.g.
'https://patchwork.ozlabs.org/project/uboot/list/?series=3
project (dict): project information (id, url, name, link_name,
list_id, list_email, etc.
name (str): Series name, e.g. '[U-Boot] moveconfig: fix error'
date (str): Date, e.g. '2017-08-27T08:00:51'
submitter (dict): id, url, name, email, e.g.:
"id": 6125,
"url": "https://patchwork.ozlabs.org/api/1.2/people/6125/",
"name": "Chris Packham",
"email": "judge.packham@gmail.com"
version (int): Version number
total (int): Total number of patches based on subject
received_total (int): Total patches received by patchwork
received_all (bool): True if all patches were received
mbox (str): URL of mailbox, e.g.
'https://patchwork.ozlabs.org/series/3/mbox/'
cover_letter (dict) or None, e.g.:
"id": 806215,
"url": "https://patchwork.ozlabs.org/api/1.2/covers/806215/",
"web_url": "https://patchwork.ozlabs.org/project/uboot/cover/
20170827094411.8583-1-judge.packham@gmail.com/",
"msgid": "<20170827094411.8583-1-judge.packham@gmail.com>",
"list_archive_url": null,
"date": "2017-08-27T09:44:07",
"name": "[U-Boot,v2,0/4] usb: net: Migrate USB Ethernet",
"mbox": "https://patchwork.ozlabs.org/project/uboot/cover/
20170827094411.8583-1-judge.packham@gmail.com/mbox/"
patches (list of dict), each e.g.:
"id": 806202,
"url": "https://patchwork.ozlabs.org/api/1.2/patches/806202/",
"web_url": "https://patchwork.ozlabs.org/project/uboot/patch/
20170827080051.816-1-judge.packham@gmail.com/",
"msgid": "<20170827080051.816-1-judge.packham@gmail.com>",
"list_archive_url": null,
"date": "2017-08-27T08:00:51",
"name": "[U-Boot] moveconfig: fix error message do_autoconf()",
"mbox": "https://patchwork.ozlabs.org/project/uboot/patch/
20170827080051.816-1-judge.packham@gmail.com/mbox/"
"""
return await self._request(client, f'series/{link}/')
async def get_patch(self, client, patch_id):
"""Read information about a patch
Args:
client (aiohttp.ClientSession): Session to use
patch_id (str): Patchwork patch ID
Returns: dict containing patchwork's patch information
"id": 185,
"url": "https://patchwork.ozlabs.org/api/1.2/patches/185/",
"web_url": "https://patchwork.ozlabs.org/project/cbe-oss-dev/patch/
200809050416.27831.adetsch@br.ibm.com/",
project (dict): project information (id, url, name, link_name,
list_id, list_email, etc.
"msgid": "<200809050416.27831.adetsch@br.ibm.com>",
"list_archive_url": null,
"date": "2008-09-05T07:16:27",
"name": "powerpc/spufs: Fix possible scheduling of a context",
"commit_ref": "b2e601d14deb2083e2a537b47869ab3895d23a28",
"pull_url": null,
"state": "accepted",
"archived": false,
"hash": "bc1c0b80d7cff66c0d1e5f3f8f4d10eb36176f0d",
"submitter": {
"id": 93,
"url": "https://patchwork.ozlabs.org/api/1.2/people/93/",
"name": "Andre Detsch",
"email": "adetsch@br.ibm.com"
},
"delegate": {
"id": 1,
"url": "https://patchwork.ozlabs.org/api/1.2/users/1/",
"username": "jk",
"first_name": "Jeremy",
"last_name": "Kerr",
"email": "jk@ozlabs.org"
},
"mbox": "https://patchwork.ozlabs.org/project/cbe-oss-dev/patch/
200809050416.27831.adetsch@br.ibm.com/mbox/",
"series": [],
"comments": "https://patchwork.ozlabs.org/api/patches/185/
comments/",
"check": "pending",
"checks": "https://patchwork.ozlabs.org/api/patches/185/checks/",
"tags": {},
"related": [],
"headers": {...}
"content": "We currently have a race when scheduling a context
after we have found a runnable context in spusched_tick, the
context may have been scheduled by spu_activate().
This may result in a panic if we try to unschedule a context
been freed in the meantime.
This change exits spu_schedule() if the context has already
scheduled, so we don't end up scheduling it twice.
Signed-off-by: Andre Detsch <adetsch@br.ibm.com>",
"diff": '''Index: spufs/arch/powerpc/platforms/cell/spufs/sched.c
=======================================================
--- spufs.orig/arch/powerpc/platforms/cell/spufs/sched.c
+++ spufs/arch/powerpc/platforms/cell/spufs/sched.c
@@ -727,7 +727,8 @@ static void spu_schedule(struct spu *spu
\t/* not a candidate for interruptible because it's called
\t from the scheduler thread or from spu_deactivate */
\tmutex_lock(&ctx->state_mutex);
-\t__spu_schedule(spu, ctx);
+\tif (ctx->state == SPU_STATE_SAVED)
+\t\t__spu_schedule(spu, ctx);
\tspu_release(ctx);
}
'''
"prefixes": ["3/3", ...]
"""
return await self._request(client, f'patches/{patch_id}/')
async def _get_patch_comments(self, client, patch_id):
"""Read comments about a patch
Args:
client (aiohttp.ClientSession): Session to use
patch_id (str): Patchwork patch ID
Returns: list of dict: list of comments:
id (int): series ID unique across patchwork instance, e.g. 3331924
web_url (str): Full URL, e.g.
'https://patchwork.ozlabs.org/comment/3331924/'
msgid (str): Message ID, e.g.
'<d2526c98-8198-4b8b-ab10-20bda0151da1@gmx.de>'
list_archive_url: (unknown?)
date (str): Date, e.g. '2024-06-20T13:38:03'
subject (str): email subject, e.g. 'Re: [PATCH 3/5] buildman:
Support building within a Python venv'
date (str): Date, e.g. '2017-08-27T08:00:51'
submitter (dict): id, url, name, email, e.g.:
"id": 61270,
"url": "https://patchwork.ozlabs.org/api/people/61270/",
"name": "Heinrich Schuchardt",
"email": "xypron.glpk@gmx.de"
content (str): Content of email, e.g. 'On 20.06.24 15:19,
Simon Glass wrote:
>...'
headers: dict: email headers, see get_cover() for an example
"""
return await self._request(client, f'patches/{patch_id}/comments/')
async def get_cover(self, client, cover_id):
"""Read information about a cover letter
Args:
client (aiohttp.ClientSession): Session to use
cover_id (int): Patchwork cover-letter ID
Returns: dict containing patchwork's cover-letter information:
id (int): series ID unique across patchwork instance, e.g. 3
url (str): Full URL, e.g. https://patchwork.ozlabs.org/project/uboot/list/?series=3
project (dict): project information (id, url, name, link_name,
list_id, list_email, etc.
url (str): Full URL, e.g. 'https://patchwork.ozlabs.org/api/1.2/covers/2054866/'
web_url (str): Full URL, e.g. 'https://patchwork.ozlabs.org/project/uboot/cover/20250304130947.109799-1-sjg@chromium.org/'
project (dict): project information (id, url, name, link_name,
list_id, list_email, etc.
msgid (str): Message ID, e.g. '20250304130947.109799-1-sjg@chromium.org>'
list_archive_url (?)
date (str): Date, e.g. '2017-08-27T08:00:51'
name (str): Series name, e.g. '[U-Boot] moveconfig: fix error'
submitter (dict): id, url, name, email, e.g.:
"id": 6170,
"url": "https://patchwork.ozlabs.org/api/1.2/people/6170/",
"name": "Simon Glass",
"email": "sjg@chromium.org"
mbox (str): URL to mailbox, e.g. 'https://patchwork.ozlabs.org/project/uboot/cover/20250304130947.109799-1-sjg@chromium.org/mbox/'
series (list of dict) each e.g.:
"id": 446956,
"url": "https://patchwork.ozlabs.org/api/1.2/series/446956/",
"web_url": "https://patchwork.ozlabs.org/project/uboot/list/?series=446956",
"date": "2025-03-04T13:09:37",
"name": "binman: Check code-coverage requirements",
"version": 1,
"mbox": "https://patchwork.ozlabs.org/series/446956/mbox/"
comments: Web URL to comments: 'https://patchwork.ozlabs.org/api/covers/2054866/comments/'
headers: dict: e.g.:
"Return-Path": "<u-boot-bounces@lists.denx.de>",
"X-Original-To": "incoming@patchwork.ozlabs.org",
"Delivered-To": "patchwork-incoming@legolas.ozlabs.org",
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Tue, 04 Mar 2025 05:09:52 -0800 (PST)",
"From": "Simon Glass <sjg@chromium.org>",
"To": "U-Boot Mailing List <u-boot@lists.denx.de>",
"Cc": "Simon Glass <sjg@chromium.org>, Alexander Kochetkov <al.kochet@gmail.com>,
Alper Nebi Yasak <alpernebiyasak@gmail.com>,
Brandon Maier <brandon.maier@collins.com>,
Jerome Forissier <jerome.forissier@linaro.org>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
Neha Malcom Francis <n-francis@ti.com>,
Patrick Rudolph <patrick.rudolph@9elements.com>,
Paul HENRYS <paul.henrys_ext@softathome.com>, Peng Fan <peng.fan@nxp.com>,
Philippe Reynes <philippe.reynes@softathome.com>,
Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>,
Tom Rini <trini@konsulko.com>",
"Subject": "[PATCH 0/7] binman: Check code-coverage requirements",
"Date": "Tue, 4 Mar 2025 06:09:37 -0700",
"Message-ID": "<20250304130947.109799-1-sjg@chromium.org>",
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<mailto:u-boot-request@lists.denx.de?subject=unsubscribe>",
"List-Archive": "<https://lists.denx.de/pipermail/u-boot/>",
"List-Post": "<mailto:u-boot@lists.denx.de>",
"List-Help": "<mailto:u-boot-request@lists.denx.de?subject=help>",
"List-Subscribe": "<https://lists.denx.de/listinfo/u-boot>,
<mailto:u-boot-request@lists.denx.de?subject=subscribe>",
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"Sender": "\"U-Boot\" <u-boot-bounces@lists.denx.de>",
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"X-Virus-Status": "Clean"
content (str): Email content, e.g. 'This series adds a cover-coverage check to CI for Binman. The iMX8 tests
are still not completed,...'
"""
async with aiohttp.ClientSession() as client:
return await self._request(client, f'covers/{cover_id}/')
async def get_cover_comments(self, client, cover_id):
"""Read comments about a cover letter
Args:
client (aiohttp.ClientSession): Session to use
cover_id (str): Patchwork cover-letter ID
Returns: list of dict: list of comments, each:
id (int): series ID unique across patchwork instance, e.g. 3472068
web_url (str): Full URL, e.g. 'https://patchwork.ozlabs.org/comment/3472068/'
list_archive_url: (unknown?)
project (dict): project information (id, url, name, link_name,
list_id, list_email, etc.
url (str): Full URL, e.g. 'https://patchwork.ozlabs.org/api/1.2/covers/2054866/'
web_url (str): Full URL, e.g. 'https://patchwork.ozlabs.org/project/uboot/cover/20250304130947.109799-1-sjg@chromium.org/'
project (dict): project information (id, url, name, link_name,
list_id, list_email, etc.
date (str): Date, e.g. '2025-03-04T13:16:15'
subject (str): 'Re: [PATCH 0/7] binman: Check code-coverage requirements'
submitter (dict): id, url, name, email, e.g.:
"id": 6170,
"url": "https://patchwork.ozlabs.org/api/people/6170/",
"name": "Simon Glass",
"email": "sjg@chromium.org"
content (str): Email content, e.g. 'Hi,
On Tue, 4 Mar 2025 at 06:09, Simon Glass <sjg@chromium.org> wrote:
>
> This '...
headers: dict: email headers, see get_cover() for an example
"""
return await self._request(client, f'covers/{cover_id}/comments/')
async def get_series_url(self, link):
"""Get the URL for a series
Args:
link (str): Patchwork series ID
Returns:
str: URL for the series page
"""
return f'{self.url}/project/{self.link_name}/list/?series={link}&state=*&archive=both'
async def _get_patch_status(self, client, patch_id):
"""Get the patch status
Args:
client (aiohttp.ClientSession): Session to use
patch_id (int): Patch ID to look up in patchwork
Return:
PATCH: Patch information
Requests:
1 for patch, 1 for patch comments
"""
data = await self.get_patch(client, patch_id)
state = data['state']
comment_data = await self._get_patch_comments(client, patch_id)
return Patch(patch_id, state, data, comment_data)
async def get_series_cover(self, client, data):
"""Get the cover information (including comments)
Args:
client (aiohttp.ClientSession): Session to use
data (dict): Return value from self.get_series()
Returns:
COVER object, or None if no cover letter
"""
# Patchwork should always provide this, but use get() so that we don't
# have to provide it in our fake patchwork _fake_patchwork_cser()
cover = data.get('cover_letter')
cover_id = None
if cover:
cover_id = cover['id']
info = await self.get_cover_comments(client, cover_id)
cover = COVER(cover_id, len(info), cover['name'], info)
return cover
async def series_get_state(self, client, link, read_comments,
read_cover_comments):
"""Sync the series information against patchwork, to find patch status
Args:
client (aiohttp.ClientSession): Session to use
link (str): Patchwork series ID
read_comments (bool): True to read the comments on the patches
read_cover_comments (bool): True to read the comments on the cover
letter
Return: tuple:
COVER object, or None if none or not read_cover_comments
list of PATCH objects
"""
data = await self.get_series(client, link)
patch_list = list(data['patches'])
count = len(patch_list)
patches = []
if read_comments:
# Returns a list of Patch objects
tasks = [self._get_patch_status(client, patch_list[i]['id'])
for i in range(count)]
patch_status = await asyncio.gather(*tasks)
for patch_data, status in zip(patch_list, patch_status):
status.series_data = patch_data
patches.append(status)
else:
for i in range(count):
info = patch_list[i]
pat = Patch(info['id'], series_data=info)
pat.raw_subject = info['name']
patches.append(pat)
if self._show_progress:
terminal.print_clear()
if read_cover_comments:
cover = await self.get_series_cover(client, data)
else:
cover = None
return cover, patches