mirror of
https://github.com/AsahiLinux/u-boot
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4583c00236
The patman directory has a number of modules which are used by other tools in U-Boot. This makes it hard to package the tools using pypi since the common files must be copied along with the tool that uses them. To address this, move these files into a new u_boot_pylib library. This can be packaged separately and listed as a dependency of each tool. Signed-off-by: Simon Glass <sjg@chromium.org>
487 lines
17 KiB
Python
487 lines
17 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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#
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# Copyright 2020 Google LLC
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#
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"""Talks to the patchwork service to figure out what patches have been reviewed
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and commented on. Provides a way to display review tags and comments.
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Allows creation of a new branch based on the old but with the review tags
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collected from patchwork.
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"""
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import collections
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import concurrent.futures
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from itertools import repeat
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import re
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import pygit2
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import requests
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from patman import patchstream
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from patman.patchstream import PatchStream
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from u_boot_pylib import terminal
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from u_boot_pylib import tout
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# Patches which are part of a multi-patch series are shown with a prefix like
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# [prefix, version, sequence], for example '[RFC, v2, 3/5]'. All but the last
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# part is optional. This decodes the string into groups. For single patches
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# the [] part is not present:
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# Groups: (ignore, ignore, ignore, prefix, version, sequence, subject)
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RE_PATCH = re.compile(r'(\[(((.*),)?(.*),)?(.*)\]\s)?(.*)$')
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# This decodes the sequence string into a patch number and patch count
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RE_SEQ = re.compile(r'(\d+)/(\d+)')
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def to_int(vals):
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"""Convert a list of strings into integers, using 0 if not an integer
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Args:
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vals (list): List of strings
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Returns:
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list: List of integers, one for each input string
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"""
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out = [int(val) if val.isdigit() else 0 for val in vals]
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return out
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class Patch(dict):
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"""Models a patch in patchwork
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This class records information obtained from patchwork
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Some of this information comes from the 'Patch' column:
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[RFC,v2,1/3] dm: Driver and uclass changes for tiny-dm
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This shows the prefix, version, seq, count and subject.
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The other properties come from other columns in the display.
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Properties:
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pid (str): ID of the patch (typically an integer)
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seq (int): Sequence number within series (1=first) parsed from sequence
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string
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count (int): Number of patches in series, parsed from sequence string
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raw_subject (str): Entire subject line, e.g.
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"[1/2,v2] efi_loader: Sort header file ordering"
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prefix (str): Prefix string or None (e.g. 'RFC')
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version (str): Version string or None (e.g. 'v2')
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raw_subject (str): Raw patch subject
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subject (str): Patch subject with [..] part removed (same as commit
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subject)
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"""
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def __init__(self, pid):
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super().__init__()
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self.id = pid # Use 'id' to match what the Rest API provides
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self.seq = None
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self.count = None
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self.prefix = None
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self.version = None
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self.raw_subject = None
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self.subject = None
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# These make us more like a dictionary
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def __setattr__(self, name, value):
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self[name] = value
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def __getattr__(self, name):
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return self[name]
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def __hash__(self):
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return hash(frozenset(self.items()))
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def __str__(self):
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return self.raw_subject
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def parse_subject(self, raw_subject):
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"""Parse the subject of a patch into its component parts
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See RE_PATCH for details. The parsed info is placed into seq, count,
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prefix, version, subject
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Args:
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raw_subject (str): Subject string to parse
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Raises:
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ValueError: the subject cannot be parsed
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"""
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self.raw_subject = raw_subject.strip()
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mat = RE_PATCH.search(raw_subject.strip())
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if not mat:
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raise ValueError("Cannot parse subject '%s'" % raw_subject)
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self.prefix, self.version, seq_info, self.subject = mat.groups()[3:]
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mat_seq = RE_SEQ.match(seq_info) if seq_info else False
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if mat_seq is None:
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self.version = seq_info
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seq_info = None
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if self.version and not self.version.startswith('v'):
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self.prefix = self.version
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self.version = None
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if seq_info:
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if mat_seq:
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self.seq = int(mat_seq.group(1))
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self.count = int(mat_seq.group(2))
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else:
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self.seq = 1
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self.count = 1
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class Review:
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"""Represents a single review email collected in Patchwork
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Patches can attract multiple reviews. Each consists of an author/date and
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a variable number of 'snippets', which are groups of quoted and unquoted
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text.
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"""
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def __init__(self, meta, snippets):
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"""Create new Review object
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Args:
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meta (str): Text containing review author and date
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snippets (list): List of snippets in th review, each a list of text
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lines
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"""
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self.meta = ' : '.join([line for line in meta.splitlines() if line])
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self.snippets = snippets
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def compare_with_series(series, patches):
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"""Compare a list of patches with a series it came from
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This prints any problems as warnings
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Args:
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series (Series): Series to compare against
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patches (:type: list of Patch): list of Patch objects to compare with
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Returns:
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tuple
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dict:
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key: Commit number (0...n-1)
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value: Patch object for that commit
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dict:
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key: Patch number (0...n-1)
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value: Commit object for that patch
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"""
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# Check the names match
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warnings = []
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patch_for_commit = {}
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all_patches = set(patches)
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for seq, cmt in enumerate(series.commits):
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pmatch = [p for p in all_patches if p.subject == cmt.subject]
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if len(pmatch) == 1:
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patch_for_commit[seq] = pmatch[0]
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all_patches.remove(pmatch[0])
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elif len(pmatch) > 1:
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warnings.append("Multiple patches match commit %d ('%s'):\n %s" %
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(seq + 1, cmt.subject,
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'\n '.join([p.subject for p in pmatch])))
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else:
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warnings.append("Cannot find patch for commit %d ('%s')" %
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(seq + 1, cmt.subject))
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# Check the names match
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commit_for_patch = {}
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all_commits = set(series.commits)
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for seq, patch in enumerate(patches):
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cmatch = [c for c in all_commits if c.subject == patch.subject]
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if len(cmatch) == 1:
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commit_for_patch[seq] = cmatch[0]
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all_commits.remove(cmatch[0])
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elif len(cmatch) > 1:
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warnings.append("Multiple commits match patch %d ('%s'):\n %s" %
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(seq + 1, patch.subject,
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'\n '.join([c.subject for c in cmatch])))
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else:
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warnings.append("Cannot find commit for patch %d ('%s')" %
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(seq + 1, patch.subject))
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return patch_for_commit, commit_for_patch, warnings
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def call_rest_api(url, subpath):
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"""Call the patchwork API and return the result as JSON
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Args:
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url (str): URL of patchwork server, e.g. 'https://patchwork.ozlabs.org'
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subpath (str): URL subpath to use
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Returns:
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dict: Json result
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Raises:
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ValueError: the URL could not be read
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"""
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full_url = '%s/api/1.2/%s' % (url, subpath)
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response = requests.get(full_url)
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if response.status_code != 200:
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raise ValueError("Could not read URL '%s'" % full_url)
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return response.json()
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def collect_patches(series, series_id, url, rest_api=call_rest_api):
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"""Collect patch information about a series from patchwork
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Uses the Patchwork REST API to collect information provided by patchwork
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about the status of each patch.
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Args:
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series (Series): Series object corresponding to the local branch
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containing the series
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series_id (str): Patch series ID number
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url (str): URL of patchwork server, e.g. 'https://patchwork.ozlabs.org'
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rest_api (function): API function to call to access Patchwork, for
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testing
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Returns:
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list: List of patches sorted by sequence number, each a Patch object
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Raises:
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ValueError: if the URL could not be read or the web page does not follow
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the expected structure
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"""
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data = rest_api(url, 'series/%s/' % series_id)
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# Get all the rows, which are patches
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patch_dict = data['patches']
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count = len(patch_dict)
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num_commits = len(series.commits)
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if count != num_commits:
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tout.warning('Warning: Patchwork reports %d patches, series has %d' %
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(count, num_commits))
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patches = []
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# Work through each row (patch) one at a time, collecting the information
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warn_count = 0
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for pw_patch in patch_dict:
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patch = Patch(pw_patch['id'])
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patch.parse_subject(pw_patch['name'])
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patches.append(patch)
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if warn_count > 1:
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tout.warning(' (total of %d warnings)' % warn_count)
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# Sort patches by patch number
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patches = sorted(patches, key=lambda x: x.seq)
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return patches
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def find_new_responses(new_rtag_list, review_list, seq, cmt, patch, url,
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rest_api=call_rest_api):
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"""Find new rtags collected by patchwork that we don't know about
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This is designed to be run in parallel, once for each commit/patch
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Args:
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new_rtag_list (list): New rtags are written to new_rtag_list[seq]
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list, each a dict:
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key: Response tag (e.g. 'Reviewed-by')
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value: Set of people who gave that response, each a name/email
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string
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review_list (list): New reviews are written to review_list[seq]
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list, each a
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List of reviews for the patch, each a Review
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seq (int): Position in new_rtag_list to update
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cmt (Commit): Commit object for this commit
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patch (Patch): Corresponding Patch object for this patch
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url (str): URL of patchwork server, e.g. 'https://patchwork.ozlabs.org'
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rest_api (function): API function to call to access Patchwork, for
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testing
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"""
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if not patch:
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return
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# Get the content for the patch email itself as well as all comments
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data = rest_api(url, 'patches/%s/' % patch.id)
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pstrm = PatchStream.process_text(data['content'], True)
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rtags = collections.defaultdict(set)
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for response, people in pstrm.commit.rtags.items():
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rtags[response].update(people)
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data = rest_api(url, 'patches/%s/comments/' % patch.id)
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reviews = []
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for comment in data:
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pstrm = PatchStream.process_text(comment['content'], True)
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if pstrm.snippets:
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submitter = comment['submitter']
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person = '%s <%s>' % (submitter['name'], submitter['email'])
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reviews.append(Review(person, pstrm.snippets))
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for response, people in pstrm.commit.rtags.items():
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rtags[response].update(people)
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# Find the tags that are not in the commit
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new_rtags = collections.defaultdict(set)
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base_rtags = cmt.rtags
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for tag, people in rtags.items():
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for who in people:
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is_new = (tag not in base_rtags or
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who not in base_rtags[tag])
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if is_new:
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new_rtags[tag].add(who)
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new_rtag_list[seq] = new_rtags
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review_list[seq] = reviews
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def show_responses(rtags, indent, is_new):
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"""Show rtags collected
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Args:
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rtags (dict): review tags to show
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key: Response tag (e.g. 'Reviewed-by')
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value: Set of people who gave that response, each a name/email string
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indent (str): Indentation string to write before each line
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is_new (bool): True if this output should be highlighted
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Returns:
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int: Number of review tags displayed
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"""
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col = terminal.Color()
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count = 0
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for tag in sorted(rtags.keys()):
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people = rtags[tag]
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for who in sorted(people):
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terminal.tprint(indent + '%s %s: ' % ('+' if is_new else ' ', tag),
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newline=False, colour=col.GREEN, bright=is_new)
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terminal.tprint(who, colour=col.WHITE, bright=is_new)
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count += 1
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return count
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def create_branch(series, new_rtag_list, branch, dest_branch, overwrite,
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repo=None):
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"""Create a new branch with review tags added
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Args:
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series (Series): Series object for the existing branch
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new_rtag_list (list): List of review tags to add, one for each commit,
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each a dict:
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key: Response tag (e.g. 'Reviewed-by')
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value: Set of people who gave that response, each a name/email
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string
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branch (str): Existing branch to update
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dest_branch (str): Name of new branch to create
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overwrite (bool): True to force overwriting dest_branch if it exists
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repo (pygit2.Repository): Repo to use (use None unless testing)
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Returns:
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int: Total number of review tags added across all commits
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Raises:
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ValueError: if the destination branch name is the same as the original
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branch, or it already exists and @overwrite is False
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"""
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if branch == dest_branch:
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raise ValueError(
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'Destination branch must not be the same as the original branch')
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if not repo:
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repo = pygit2.Repository('.')
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count = len(series.commits)
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new_br = repo.branches.get(dest_branch)
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if new_br:
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if not overwrite:
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raise ValueError("Branch '%s' already exists (-f to overwrite)" %
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dest_branch)
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new_br.delete()
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if not branch:
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branch = 'HEAD'
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target = repo.revparse_single('%s~%d' % (branch, count))
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repo.branches.local.create(dest_branch, target)
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num_added = 0
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for seq in range(count):
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parent = repo.branches.get(dest_branch)
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cherry = repo.revparse_single('%s~%d' % (branch, count - seq - 1))
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repo.merge_base(cherry.oid, parent.target)
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base_tree = cherry.parents[0].tree
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index = repo.merge_trees(base_tree, parent, cherry)
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tree_id = index.write_tree(repo)
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lines = []
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if new_rtag_list[seq]:
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for tag, people in new_rtag_list[seq].items():
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for who in people:
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lines.append('%s: %s' % (tag, who))
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num_added += 1
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message = patchstream.insert_tags(cherry.message.rstrip(),
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sorted(lines))
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repo.create_commit(
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parent.name, cherry.author, cherry.committer, message, tree_id,
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[parent.target])
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return num_added
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def check_patchwork_status(series, series_id, branch, dest_branch, force,
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show_comments, url, rest_api=call_rest_api,
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test_repo=None):
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"""Check the status of a series on Patchwork
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This finds review tags and comments for a series in Patchwork, displaying
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them to show what is new compared to the local series.
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Args:
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series (Series): Series object for the existing branch
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series_id (str): Patch series ID number
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branch (str): Existing branch to update, or None
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dest_branch (str): Name of new branch to create, or None
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force (bool): True to force overwriting dest_branch if it exists
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show_comments (bool): True to show the comments on each patch
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url (str): URL of patchwork server, e.g. 'https://patchwork.ozlabs.org'
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rest_api (function): API function to call to access Patchwork, for
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testing
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test_repo (pygit2.Repository): Repo to use (use None unless testing)
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"""
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patches = collect_patches(series, series_id, url, rest_api)
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col = terminal.Color()
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count = len(series.commits)
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new_rtag_list = [None] * count
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review_list = [None] * count
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patch_for_commit, _, warnings = compare_with_series(series, patches)
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for warn in warnings:
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tout.warning(warn)
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patch_list = [patch_for_commit.get(c) for c in range(len(series.commits))]
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with concurrent.futures.ThreadPoolExecutor(max_workers=16) as executor:
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futures = executor.map(
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find_new_responses, repeat(new_rtag_list), repeat(review_list),
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range(count), series.commits, patch_list, repeat(url),
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repeat(rest_api))
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for fresponse in futures:
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if fresponse:
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raise fresponse.exception()
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num_to_add = 0
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for seq, cmt in enumerate(series.commits):
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patch = patch_for_commit.get(seq)
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if not patch:
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continue
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terminal.tprint('%3d %s' % (patch.seq, patch.subject[:50]),
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colour=col.BLUE)
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cmt = series.commits[seq]
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base_rtags = cmt.rtags
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new_rtags = new_rtag_list[seq]
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indent = ' ' * 2
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show_responses(base_rtags, indent, False)
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num_to_add += show_responses(new_rtags, indent, True)
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if show_comments:
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for review in review_list[seq]:
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terminal.tprint('Review: %s' % review.meta, colour=col.RED)
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for snippet in review.snippets:
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for line in snippet:
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quoted = line.startswith('>')
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terminal.tprint(' %s' % line,
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colour=col.MAGENTA if quoted else None)
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terminal.tprint()
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terminal.tprint("%d new response%s available in patchwork%s" %
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(num_to_add, 's' if num_to_add != 1 else '',
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'' if dest_branch
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else ' (use -d to write them to a new branch)'))
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if dest_branch:
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num_added = create_branch(series, new_rtag_list, branch,
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dest_branch, force, test_repo)
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terminal.tprint(
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"%d response%s added from patchwork into new branch '%s'" %
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(num_added, 's' if num_added != 1 else '', dest_branch))
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