gecko-dev/tools/mach_commands.py

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, # You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import absolute_import, print_function, unicode_literals

import argparse
import logging
import sys

from mach.decorators import (
    CommandArgument,
    CommandProvider,
    Command,
    SubCommand,
)

from mozbuild.base import MachCommandBase, MozbuildObject


@CommandProvider
class BustedProvider(MachCommandBase):
    @Command('busted', category='misc',
             description='Query known bugs in our tooling, and file new ones.')
    def busted_default(self):
        import requests
        payload = {'include_fields': 'id,summary,last_change_time',
                   'blocks': 1543241,
                   'resolution': '---'}
        response = requests.get('https://bugzilla.mozilla.org/rest/bug', payload)
        response.raise_for_status()
        json_response = response.json()
        if 'bugs' in json_response and len(json_response['bugs']) > 0:
            # Display most recently modifed bugs first.
            bugs = sorted(json_response['bugs'], key=lambda item: item['last_change_time'],
                          reverse=True)
            for bug in bugs:
                print("Bug %s - %s" % (bug['id'], bug['summary']))
        else:
            print("No known tooling issues found.")

    @SubCommand('busted',
                'file',
                description='File a bug for busted tooling.')
    @CommandArgument(
        'against', help=(
            'The specific mach command that is busted (i.e. if you encountered '
            'an error with `mach build`, run `mach busted file build`). If '
            'the issue is not connected to any particular mach command, you '
            'can also run `mach busted file general`.'))
    def busted_file(self, against):
        import webbrowser

        if (against != 'general' and
            against not in self._mach_context.commands.command_handlers):
            print('%s is not a valid value for `against`. `against` must be '
                  'the name of a `mach` command, or else the string '
                  '"general".' % against)
            return 1

        if against == 'general':
            product = 'Firefox Build System'
            component = 'General'
        else:
            import inspect
            import mozpack.path as mozpath

            # Look up the file implementing that command, then cross-refernce
            # moz.build files to get the product/component.
            handler = self._mach_context.commands.command_handlers[against]
            method = getattr(handler.cls, handler.method)
            sourcefile = mozpath.relpath(inspect.getsourcefile(method),
                                         self.topsrcdir)
            reader = self.mozbuild_reader(config_mode='empty')
            try:
                res = reader.files_info(
                    [sourcefile])[sourcefile]['BUG_COMPONENT']
                product, component = res.product, res.component
            except TypeError:
                # The file might not have a bug set.
                product = 'Firefox Build System'
                component = 'General'

        uri = ('https://bugzilla.mozilla.org/enter_bug.cgi?'
               'product=%s&component=%s&blocked=1543241' % (product, component))
        webbrowser.open_new_tab(uri)


MACH_PASTEBIN_DURATIONS = {
    'onetime': 'onetime',
    'hour': '3600',
    'day': '86400',
    'week': '604800',
    'month': '2073600',
}

EXTENSION_TO_HIGHLIGHTER = {
    '.hgrc': 'ini',
    'Dockerfile': 'docker',
    'Makefile': 'make',
    'applescript': 'applescript',
    'arduino': 'arduino',
    'bash': 'bash',
    'bat': 'bat',
    'c': 'c',
    'clojure': 'clojure',
    'cmake': 'cmake',
    'coffee': 'coffee-script',
    'console': 'console',
    'cpp': 'cpp',
    'cs': 'csharp',
    'css': 'css',
    'cu': 'cuda',
    'cuda': 'cuda',
    'dart': 'dart',
    'delphi': 'delphi',
    'diff': 'diff',
    'django': 'django',
    'docker': 'docker',
    'elixir': 'elixir',
    'erlang': 'erlang',
    'go': 'go',
    'h': 'c',
    'handlebars': 'handlebars',
    'haskell': 'haskell',
    'hs': 'haskell',
    'html': 'html',
    'ini': 'ini',
    'ipy': 'ipythonconsole',
    'ipynb': 'ipythonconsole',
    'irc': 'irc',
    'j2': 'django',
    'java': 'java',
    'js': 'js',
    'json': 'json',
    'jsx': 'jsx',
    'kt': 'kotlin',
    'less': 'less',
    'lisp': 'common-lisp',
    'lsp': 'common-lisp',
    'lua': 'lua',
    'm': 'objective-c',
    'make': 'make',
    'matlab': 'matlab',
    'md': '_markdown',
    'nginx': 'nginx',
    'numpy': 'numpy',
    'patch': 'diff',
    'perl': 'perl',
    'php': 'php',
    'pm': 'perl',
    'postgresql': 'postgresql',
    'py': 'python',
    'rb': 'rb',
    'rs': 'rust',
    'rst': 'rst',
    'sass': 'sass',
    'scss': 'scss',
    'sh': 'bash',
    'sol': 'sol',
    'sql': 'sql',
    'swift': 'swift',
    'tex': 'tex',
    'typoscript': 'typoscript',
    'vim': 'vim',
    'xml': 'xml',
    'xslt': 'xslt',
    'yaml': 'yaml',
    'yml': 'yaml'
}


def guess_highlighter_from_path(path):
    '''Return a known highlighter from a given path

    Attempt to select a highlighter by checking the file extension in the mapping
    of extensions to highlighter. If that fails, attempt to pass the basename of
    the file. Return `_code` as the default highlighter if that fails.
    '''
    import os

    _name, ext = os.path.splitext(path)

    if ext.startswith('.'):
        ext = ext[1:]

    if ext in EXTENSION_TO_HIGHLIGHTER:
        return EXTENSION_TO_HIGHLIGHTER[ext]

    basename = os.path.basename(path)

    return EXTENSION_TO_HIGHLIGHTER.get(basename, '_code')


PASTEMO_MAX_CONTENT_LENGTH = 250 * 1024 * 1024

PASTEMO_URL = 'https://paste.mozilla.org/api/'

MACH_PASTEBIN_DESCRIPTION = '''
Command line interface to paste.mozilla.org.

Takes either a filename whose content should be pasted, or reads
content from standard input. If a highlighter is specified it will
be used, otherwise the file name will be used to determine an
appropriate highlighter.
'''


@CommandProvider
class PastebinProvider(object):
    @Command('pastebin', category='misc',
             description=MACH_PASTEBIN_DESCRIPTION)
    @CommandArgument('--list-highlighters', action='store_true',
                     help='List known highlighters and exit')
    @CommandArgument('--highlighter', default=None,
                     help='Syntax highlighting to use for paste')
    @CommandArgument('--expires', default='week',
                     choices=sorted(MACH_PASTEBIN_DURATIONS.keys()),
                     help='Expire paste after given time duration (default: %(default)s)')
    @CommandArgument('--verbose', action='store_true',
                     help='Print extra info such as selected syntax highlighter')
    @CommandArgument('path', nargs='?', default=None,
                     help='Path to file for upload to paste.mozilla.org')
    def pastebin(self, list_highlighters, highlighter, expires, verbose, path):
        import requests

        def verbose_print(*args, **kwargs):
            '''Print a string if `--verbose` flag is set'''
            if verbose:
                print(*args, **kwargs)

        # Show known highlighters and exit.
        if list_highlighters:
            lexers = set(EXTENSION_TO_HIGHLIGHTER.values())
            print('Available lexers:\n'
                  '    - %s' % '\n    - '.join(sorted(lexers)))
            return 0

        # Get a correct expiry value.
        try:
            verbose_print('Setting expiry from %s' % expires)
            expires = MACH_PASTEBIN_DURATIONS[expires]
            verbose_print('Using %s as expiry' % expires)
        except KeyError:
            print('%s is not a valid duration.\n'
                  '(hint: try one of %s)' %
                  (expires, ', '.join(MACH_PASTEBIN_DURATIONS.keys())))
            return 1

        data = {
            'format': 'json',
            'expires': expires,
        }

        # Get content to be pasted.
        if path:
            verbose_print('Reading content from %s' % path)
            try:
                with open(path, 'r') as f:
                    content = f.read()
            except IOError:
                print('ERROR. No such file %s' % path)
                return 1

            lexer = guess_highlighter_from_path(path)
            if lexer:
                data['lexer'] = lexer
        else:
            verbose_print('Reading content from stdin')
            content = sys.stdin.read()

        # Assert the length of content to be posted does not exceed the maximum.
        content_length = len(content)
        verbose_print('Checking size of content is okay (%d)' % content_length)
        if content_length > PASTEMO_MAX_CONTENT_LENGTH:
            print('Paste content is too large (%d, maximum %d)' %
                  (content_length, PASTEMO_MAX_CONTENT_LENGTH))
            return 1

        data['content'] = content

        # Highlight as specified language, overwriting value set from filename.
        if highlighter:
            verbose_print('Setting %s as highlighter' % highlighter)
            data['lexer'] = highlighter

        try:
            verbose_print('Sending request to %s' % PASTEMO_URL)
            resp = requests.post(PASTEMO_URL, data=data)

            # Error code should always be 400.
            # Response content will include a helpful error message,
            # so print it here (for example, if an invalid highlighter is
            # provided, it will return a list of valid highlighters).
            if resp.status_code >= 400:
                print('Error code %d: %s' % (resp.status_code, resp.content))
                return 1

            verbose_print('Pasted successfully')

            response_json = resp.json()

            verbose_print('Paste highlighted as %s' % response_json['lexer'])
            print(response_json['url'])

            return 0
        except Exception as e:
            print('ERROR. Paste failed.')
            print('%s' % e)
        return 1


class PypiBasedTool:
    """
    Helper for loading a tool that is hosted on pypi. The package is expected
    to expose a `mach_interface` module which has `new_release_on_pypi`,
    `parser`, and `run` functions.
    """

    def __init__(self, module_name, pypi_name=None):
        self.name = module_name
        self.pypi_name = pypi_name or module_name

    def _import(self):
        # Lazy loading of the tools mach interface.
        # Note that only the mach_interface module should be used from this file.
        import importlib
        try:
            return importlib.import_module('%s.mach_interface' % self.name)
        except ImportError:
            return None

    def create_parser(self, subcommand=None):
        # Create the command line parser.
        # If the tool is not installed, or not up to date, it will
        # first be installed.
        cmd = MozbuildObject.from_environment()
        cmd.activate_virtualenv()
        tool = self._import()
        if not tool:
            # The tool is not here at all, install it
            cmd.virtualenv_manager.install_pip_package(self.pypi_name)
            print("%s was installed. please re-run your"
                  " command. If you keep getting this message please "
                  " manually run: 'pip install -U %s'." % (self.pypi_name, self.pypi_name))
        else:
            # Check if there is a new release available
            release = tool.new_release_on_pypi()
            if release:
                print(release)
                # there is one, so install it. Note that install_pip_package
                # does not work here, so just run pip directly.
                cmd.virtualenv_manager._run_pip([
                    'install',
                    '%s==%s' % (self.pypi_name, release)
                ])
                print("%s was updated to version %s. please"
                      " re-run your command." % (self.pypi_name, release))
            else:
                # Tool is up to date, return the parser.
                if subcommand:
                    return tool.parser(subcommand)
                else:
                    return tool.parser()
        # exit if we updated or installed mozregression because
        # we may have already imported mozregression and running it
        # as this may cause issues.
        sys.exit(0)

    def run(self, **options):
        tool = self._import()
        tool.run(options)


def mozregression_create_parser():
    # Create the mozregression command line parser.
    # if mozregression is not installed, or not up to date, it will
    # first be installed.
    loader = PypiBasedTool("mozregression")
    return loader.create_parser()


@CommandProvider
class MozregressionCommand(MachCommandBase):
    @Command('mozregression',
             category='misc',
             description=("Regression range finder for nightly"
                          " and inbound builds."),
             parser=mozregression_create_parser)
    def run(self, **options):
        self.activate_virtualenv()
        mozregression = PypiBasedTool("mozregression")
        mozregression.run(**options)


@CommandProvider
class NodeCommands(MachCommandBase):
    @Command(
        "node",
        category="devenv",
        description="Run the NodeJS interpreter used for building.",
    )
    @CommandArgument("args", nargs=argparse.REMAINDER)
    def node(self, args):
        from mozbuild.nodeutil import find_node_executable

        # Avoid logging the command
        self.log_manager.terminal_handler.setLevel(logging.CRITICAL)

        node_path, _ = find_node_executable()

        return self.run_process(
            [node_path] + args,
            pass_thru=True,  # Allow user to run Node interactively.
            ensure_exit_code=False,  # Don't throw on non-zero exit code.
        )

    @Command(
        "npm",
        category="devenv",
        description="Run the npm executable from the NodeJS used for building.",
    )
    @CommandArgument("args", nargs=argparse.REMAINDER)
    def npm(self, args):
        from mozbuild.nodeutil import find_npm_executable

        # Avoid logging the command
        self.log_manager.terminal_handler.setLevel(logging.CRITICAL)

        npm_path, _ = find_npm_executable()

        return self.run_process(
            [npm_path, "--scripts-prepend-node-path=auto"] + args,
            pass_thru=True,  # Avoid eating npm output/error messages
            ensure_exit_code=False,  # Don't throw on non-zero exit code.
        )