llvm-premerge-checks/scripts/phabtalk/phabtalk.py

#!/usr/bin/env python3
# Copyright 2019 Google LLC
#
# Licensed under the the Apache License v2.0 with LLVM Exceptions (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://llvm.org/LICENSE.txt
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Interactions with Phabricator.
"""

import logging
import socket
import time
from typing import Optional, List, Dict
import uuid

import backoff
from phabricator import Phabricator


class PhabTalk:
    """Talk to Phabricator to upload build results.
       See https://secure.phabricator.com/conduit/method/harbormaster.sendmessage/
    """

    def __init__(self, token: Optional[str], host: Optional[str] = 'https://reviews.llvm.org/api/',
                 dryrun: bool = False):
        self._phab = None  # type: Optional[Phabricator]
        if not dryrun:
            self._phab = Phabricator(token=token, host=host)
            self.update_interfaces()

    @backoff.on_exception(backoff.expo, Exception, max_tries=5, logger='', factor=3)
    def update_interfaces(self):
        self._phab.update_interfaces()

    @property
    def dryrun(self):
        return self._phab is None

    @backoff.on_exception(backoff.expo, Exception, max_tries=5, logger='', factor=3)
    def get_revision_id(self, diff: str) -> Optional[str]:
        """Get the revision ID for a diff from Phabricator."""
        if self.dryrun:
            return None

        result = self._phab.differential.querydiffs(ids=[diff])
        return 'D' + result[diff]['revisionID']

    def comment_on_diff(self, diff_id: str, text: str):
        """Add a comment to a differential based on the diff_id"""
        print('Sending comment to diff {}:'.format(diff_id))
        print(text)
        revision_id = self.get_revision_id(diff_id)
        if revision_id is not None:
            self._comment_on_revision(revision_id, text)

    @backoff.on_exception(backoff.expo, Exception, max_tries=5, logger='', factor=3)
    def _comment_on_revision(self, revision: str, text: str):
        """Add comment on a differential based on the revision id."""

        transactions = [{
            'type': 'comment',
            'value': text
        }]

        if self.dryrun:
            print('differential.revision.edit =================')
            print('Transactions: {}'.format(transactions))
            return

        # API details at
        # https://secure.phabricator.com/conduit/method/differential.revision.edit/
        self._phab.differential.revision.edit(objectIdentifier=revision,
                                              transactions=transactions)
        print('Uploaded comment to Revision D{}:{}'.format(revision, text))

    @backoff.on_exception(backoff.expo, Exception, max_tries=5, logger='', factor=3)
    def update_build_status(self, phid: str, working: bool, success: bool, lint: {}, unit: []):
        """Submit collected report to Phabricator.
        """

        result_type = 'pass'
        if working:
            result_type = 'working'
        elif not success:
            result_type = 'fail'

        # Group lint messages by file and line.
        lint_messages = []
        for v in lint.values():
            path = ''
            line = 0
            descriptions = []
            for e in v:
                path = e['path']
                line = e['line']
                descriptions.append('{}: {}'.format(e['name'], e['description']))
            lint_message = {
                'name': 'Pre-merge checks',
                'severity': 'warning',
                'code': 'llvm-premerge-checks',
                'path': path,
                'line': line,
                'description': '\n'.join(descriptions),
            }
            lint_messages.append(lint_message)

        if self.dryrun:
            print('harbormaster.sendmessage =================')
            print('type: {}'.format(result_type))
            print('unit: {}'.format(unit))
            print('lint: {}'.format(lint_messages))
            return

        self._phab.harbormaster.sendmessage(
            buildTargetPHID=phid,
            type=result_type,
            unit=unit,
            lint=lint_messages)
        print('Uploaded build status {}, {} test results and {} lint results'.format(
            result_type, len(unit), len(lint_messages)))

    @backoff.on_exception(backoff.expo, Exception, max_tries=5, logger='', factor=3)
    def create_artifact(self, phid, artifact_key, artifact_type, artifact_data):
        if self.dryrun:
            print('harbormaster.createartifact =================')
            print('artifactKey: {}'.format(artifact_key))
            print('artifactType: {}'.format(artifact_type))
            print('artifactData: {}'.format(artifact_data))
            return
        self._phab.harbormaster.createartifact(
            buildTargetPHID=phid,
            artifactKey=artifact_key,
            artifactType=artifact_type,
            artifactData=artifact_data)

    def maybe_add_url_artifact(self, phid: str, url: str, name: str):
        if phid is None:
            logging.warning('PHID is not provided, cannot create URL artifact')
            return
        self.create_artifact(phid, str(uuid.uuid4()), 'uri', {'uri': url, 'ui.external': True, 'name': name})


class Step:
    def __init__(self):
        self.name = ''
        self.success = True
        self.duration = 0.0
        self.messages = []
        self.reproduce_commands = []

    def set_status_from_exit_code(self, exit_code: int):
        if exit_code != 0:
            self.success = False


class Report:
    def __init__(self):
        self.os = ''
        self.name = ''
        self.comments = []
        self.success = True
        self.working = False
        self.unit = []  # type: List
        self.lint = {}
        self.test_stats = {
            'pass': 0,
            'fail': 0,
            'skip': 0
        }  # type: Dict[str, int]
        self.steps = []  # type: List[Step]
        self.artifacts = []  # type: List

    def __str__(self):
        return str(self.__dict__)

    def add_lint(self, m):
        key = '{}:{}'.format(m['path'], m['line'])
        if key not in self.lint:
            self.lint[key] = []
        self.lint[key].append(m)

    def add_artifact(self, dir: str, file: str, name: str):
        self.artifacts.append({'dir': dir, 'file': file, 'name': name})