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Edit File : basecommand.py \| Size : 6.42 KB
"""Base Command class, and related routines""" import os import sys import tempfile import traceback import time import optparse from pip import cmdoptions from pip.locations import running_under_virtualenv from pip.log import logger from pip.download import PipSession from pip.exceptions import (BadCommand, InstallationError, UninstallationError, CommandError, PreviousBuildDirError) from pip.backwardcompat import StringIO from pip.baseparser import ConfigOptionParser, UpdatingDefaultsHelpFormatter from pip.status_codes import (SUCCESS, ERROR, UNKNOWN_ERROR, VIRTUALENV_NOT_FOUND, PREVIOUS_BUILD_DIR_ERROR) from pip.util import get_prog __all__ = ['Command'] class Command(object): name = None usage = None hidden = False def __init__(self): parser_kw = { 'usage': self.usage, 'prog': '%s %s' % (get_prog(), self.name), 'formatter': UpdatingDefaultsHelpFormatter(), 'add_help_option': False, 'name': self.name, 'description': self.__doc__, } self.parser = ConfigOptionParser(*parser_kw) # Commands should add options to this option group optgroup_name = '%s Options' % self.name.capitalize() self.cmd_opts = optparse.OptionGroup(self.parser, optgroup_name) # Add the general options gen_opts = cmdoptions.make_option_group(cmdoptions.general_group, self.parser) self.parser.add_option_group(gen_opts) def _build_session(self, options): session = PipSession() # Handle custom ca-bundles from the user if options.cert: session.verify = options.cert # Handle timeouts if options.timeout: session.timeout = options.timeout # Handle configured proxies if options.proxy: session.proxies = { "http": options.proxy, "https": options.proxy, } # Determine if we can prompt the user for authentication or not session.auth.prompting = not options.no_input return session def setup_logging(self): pass def parse_args(self, args): # factored out for testability return self.parser.parse_args(args) def main(self, args): options, args = self.parse_args(args) level = 1 # Notify level += options.verbose level -= options.quiet level = logger.level_for_integer(4 - level) complete_log = [] logger.add_consumers( (level, sys.stdout), (logger.DEBUG, complete_log.append), ) if options.log_explicit_levels: logger.explicit_levels = True self.setup_logging() #TODO: try to get these passing down from the command? # without resorting to os.environ to hold these. if options.no_input: os.environ['PIP_NO_INPUT'] = '1' if options.exists_action: os.environ['PIP_EXISTS_ACTION'] = ' '.join(options.exists_action) if options.require_venv: # If a venv is required check if it can really be found if not running_under_virtualenv(): logger.fatal('Could not find an activated virtualenv (required).') sys.exit(VIRTUALENV_NOT_FOUND) if options.log: log_fp = open_logfile(options.log, 'a') logger.add_consumers((logger.DEBUG, log_fp)) else: log_fp = None exit = SUCCESS store_log = False try: status = self.run(options, args) # FIXME: all commands should return an exit status # and when it is done, isinstance is not needed anymore if isinstance(status, int): exit = status except PreviousBuildDirError: e = sys.exc_info()[1] logger.fatal(str(e)) logger.info('Exception information:\n%s' % format_exc()) store_log = True exit = PREVIOUS_BUILD_DIR_ERROR except (InstallationError, UninstallationError): e = sys.exc_info()[1] logger.fatal(str(e)) logger.info('Exception information:\n%s' % format_exc()) store_log = True exit = ERROR except BadCommand: e = sys.exc_info()[1] logger.fatal(str(e)) logger.info('Exception information:\n%s' % format_exc()) store_log = True exit = ERROR except CommandError: e = sys.exc_info()[1] logger.fatal('ERROR: %s' % e) logger.info('Exception information:\n%s' % format_exc()) exit = ERROR except KeyboardInterrupt: logger.fatal('Operation cancelled by user') logger.info('Exception information:\n%s' % format_exc()) store_log = True exit = ERROR except: logger.fatal('Exception:\n%s' % format_exc()) store_log = True exit = UNKNOWN_ERROR if store_log: log_file_fn = options.log_file text = '\n'.join(complete_log) try: log_file_fp = open_logfile(log_file_fn, 'w') except IOError: temp = tempfile.NamedTemporaryFile(delete=False) log_file_fn = temp.name log_file_fp = open_logfile(log_file_fn, 'w') logger.fatal('Storing debug log for failure in %s' % log_file_fn) log_file_fp.write(text) log_file_fp.close() if log_fp is not None: log_fp.close() return exit def format_exc(exc_info=None): if exc_info is None: exc_info = sys.exc_info() out = StringIO() traceback.print_exception(exc_info, *dict(file=out)) return out.getvalue() def open_logfile(filename, mode='a'): """Open the named log file in append mode. If the file already exists, a separator will also be printed to the file to separate past activity from current activity. """ filename = os.path.expanduser(filename) filename = os.path.abspath(filename) dirname = os.path.dirname(filename) if not os.path.exists(dirname): os.makedirs(dirname) exists = os.path.exists(filename) log_fp = open(filename, mode) if exists: log_fp.write('%s\n' % ('-' 60)) log_fp.write('%s run on %s\n' % (sys.argv[0], time.strftime('%c'))) return log_fp Back

Edit File : basecommand.py | Size : 6.42 KB

"""Base Command class, and related routines"""

import os
import sys
import tempfile
import traceback
import time
import optparse

from pip import cmdoptions
from pip.locations import running_under_virtualenv
from pip.log import logger
from pip.download import PipSession
from pip.exceptions import (BadCommand, InstallationError, UninstallationError,
                            CommandError, PreviousBuildDirError)
from pip.backwardcompat import StringIO
from pip.baseparser import ConfigOptionParser, UpdatingDefaultsHelpFormatter
from pip.status_codes import (SUCCESS, ERROR, UNKNOWN_ERROR, VIRTUALENV_NOT_FOUND,
                              PREVIOUS_BUILD_DIR_ERROR)
from pip.util import get_prog

__all__ = ['Command']

class Command(object):
    name = None
    usage = None
    hidden = False

def __init__(self):
        parser_kw = {
            'usage': self.usage,
            'prog': '%s %s' % (get_prog(), self.name),
            'formatter': UpdatingDefaultsHelpFormatter(),
            'add_help_option': False,
            'name': self.name,
            'description': self.__doc__,
        }

self.parser = ConfigOptionParser(**parser_kw)

# Commands should add options to this option group
        optgroup_name = '%s Options' % self.name.capitalize()
        self.cmd_opts = optparse.OptionGroup(self.parser, optgroup_name)

# Add the general options
        gen_opts = cmdoptions.make_option_group(cmdoptions.general_group, self.parser)
        self.parser.add_option_group(gen_opts)

def _build_session(self, options):
        session = PipSession()

# Handle custom ca-bundles from the user
        if options.cert:
            session.verify = options.cert

# Handle timeouts
        if options.timeout:
            session.timeout = options.timeout

# Handle configured proxies
        if options.proxy:
            session.proxies = {
                "http": options.proxy,
                "https": options.proxy,
            }

# Determine if we can prompt the user for authentication or not
        session.auth.prompting = not options.no_input

return session

def setup_logging(self):
        pass

def parse_args(self, args):
        # factored out for testability
        return self.parser.parse_args(args)

def main(self, args):
        options, args = self.parse_args(args)

level = 1  # Notify
        level += options.verbose
        level -= options.quiet
        level = logger.level_for_integer(4 - level)
        complete_log = []
        logger.add_consumers(
            (level, sys.stdout),
            (logger.DEBUG, complete_log.append),
        )
        if options.log_explicit_levels:
            logger.explicit_levels = True

self.setup_logging()

#TODO: try to get these passing down from the command?
        #      without resorting to os.environ to hold these.

if options.no_input:
            os.environ['PIP_NO_INPUT'] = '1'

if options.exists_action:
            os.environ['PIP_EXISTS_ACTION'] = ' '.join(options.exists_action)

if options.require_venv:
            # If a venv is required check if it can really be found
            if not running_under_virtualenv():
                logger.fatal('Could not find an activated virtualenv (required).')
                sys.exit(VIRTUALENV_NOT_FOUND)

if options.log:
            log_fp = open_logfile(options.log, 'a')
            logger.add_consumers((logger.DEBUG, log_fp))
        else:
            log_fp = None

exit = SUCCESS
        store_log = False
        try:
            status = self.run(options, args)
            # FIXME: all commands should return an exit status
            # and when it is done, isinstance is not needed anymore
            if isinstance(status, int):
                exit = status
        except PreviousBuildDirError:
            e = sys.exc_info()[1]
            logger.fatal(str(e))
            logger.info('Exception information:\n%s' % format_exc())
            store_log = True
            exit = PREVIOUS_BUILD_DIR_ERROR
        except (InstallationError, UninstallationError):
            e = sys.exc_info()[1]
            logger.fatal(str(e))
            logger.info('Exception information:\n%s' % format_exc())
            store_log = True
            exit = ERROR
        except BadCommand:
            e = sys.exc_info()[1]
            logger.fatal(str(e))
            logger.info('Exception information:\n%s' % format_exc())
            store_log = True
            exit = ERROR
        except CommandError:
            e = sys.exc_info()[1]
            logger.fatal('ERROR: %s' % e)
            logger.info('Exception information:\n%s' % format_exc())
            exit = ERROR
        except KeyboardInterrupt:
            logger.fatal('Operation cancelled by user')
            logger.info('Exception information:\n%s' % format_exc())
            store_log = True
            exit = ERROR
        except:
            logger.fatal('Exception:\n%s' % format_exc())
            store_log = True
            exit = UNKNOWN_ERROR
        if store_log:
            log_file_fn = options.log_file
            text = '\n'.join(complete_log)
            try:
                log_file_fp = open_logfile(log_file_fn, 'w')
            except IOError:
                temp = tempfile.NamedTemporaryFile(delete=False)
                log_file_fn = temp.name
                log_file_fp = open_logfile(log_file_fn, 'w')
            logger.fatal('Storing debug log for failure in %s' % log_file_fn)
            log_file_fp.write(text)
            log_file_fp.close()
        if log_fp is not None:
            log_fp.close()
        return exit

def format_exc(exc_info=None):
    if exc_info is None:
        exc_info = sys.exc_info()
    out = StringIO()
    traceback.print_exception(*exc_info, **dict(file=out))
    return out.getvalue()

def open_logfile(filename, mode='a'):
    """Open the named log file in append mode.

If the file already exists, a separator will also be printed to
    the file to separate past activity from current activity.
    """
    filename = os.path.expanduser(filename)
    filename = os.path.abspath(filename)
    dirname = os.path.dirname(filename)
    if not os.path.exists(dirname):
        os.makedirs(dirname)
    exists = os.path.exists(filename)

log_fp = open(filename, mode)
    if exists:
        log_fp.write('%s\n' % ('-' * 60))
        log_fp.write('%s run on %s\n' % (sys.argv[0], time.strftime('%c')))
    return log_fp

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