# encoding: utf-8 """ An object for managing IPython profile directories. Authors: * Brian Granger * Fernando Perez * Min RK """ #----------------------------------------------------------------------------- # Copyright (C) 2011 The IPython Development Team # # Distributed under the terms of the BSD License. The full license is in # the file COPYING, distributed as part of this software. #----------------------------------------------------------------------------- #----------------------------------------------------------------------------- # Imports #----------------------------------------------------------------------------- import os import shutil import errno from IPython.config.configurable import LoggingConfigurable from IPython.utils.path import get_ipython_package_dir, expand_path from IPython.utils.traitlets import Unicode, Bool #----------------------------------------------------------------------------- # Classes and functions #----------------------------------------------------------------------------- #----------------------------------------------------------------------------- # Module errors #----------------------------------------------------------------------------- class ProfileDirError(Exception): pass #----------------------------------------------------------------------------- # Class for managing profile directories #----------------------------------------------------------------------------- class ProfileDir(LoggingConfigurable): """An object to manage the profile directory and its resources. The profile directory is used by all IPython applications, to manage configuration, logging and security. This object knows how to find, create and manage these directories. This should be used by any code that wants to handle profiles. """ security_dir_name = Unicode('security') log_dir_name = Unicode('log') startup_dir_name = Unicode('startup') pid_dir_name = Unicode('pid') static_dir_name = Unicode('static') security_dir = Unicode(u'') log_dir = Unicode(u'') startup_dir = Unicode(u'') pid_dir = Unicode(u'') static_dir = Unicode(u'') location = Unicode(u'', config=True, help="""Set the profile location directly. This overrides the logic used by the `profile` option.""", ) _location_isset = Bool(False) # flag for detecting multiply set location def _location_changed(self, name, old, new): if self._location_isset: raise RuntimeError("Cannot set profile location more than once.") self._location_isset = True if not os.path.isdir(new): os.makedirs(new) # ensure config files exist: self.security_dir = os.path.join(new, self.security_dir_name) self.log_dir = os.path.join(new, self.log_dir_name) self.startup_dir = os.path.join(new, self.startup_dir_name) self.pid_dir = os.path.join(new, self.pid_dir_name) self.static_dir = os.path.join(new, self.static_dir_name) self.check_dirs() def _log_dir_changed(self, name, old, new): self.check_log_dir() def _mkdir(self, path, mode=None): """ensure a directory exists at a given path This is a version of os.mkdir, with the following differences: - returns True if it created the directory, False otherwise - ignores EEXIST, protecting against race conditions where the dir may have been created in between the check and the creation - sets permissions if requested and the dir already exists """ if os.path.exists(path): if mode and os.stat(path).st_mode != mode: try: os.chmod(path, mode) except OSError: self.log.warn( "Could not set permissions on %s", path ) return False try: if mode: os.mkdir(path, mode) else: os.mkdir(path) except OSError as e: if e.errno == errno.EEXIST: return False else: raise return True def check_log_dir(self): self._mkdir(self.log_dir) def _startup_dir_changed(self, name, old, new): self.check_startup_dir() def check_startup_dir(self): self._mkdir(self.startup_dir) readme = os.path.join(self.startup_dir, 'README') src = os.path.join(get_ipython_package_dir(), u'config', u'profile', u'README_STARTUP') if not os.path.exists(src): self.log.warn("Could not copy README_STARTUP to startup dir. Source file %s does not exist.", src) if os.path.exists(src) and not os.path.exists(readme): shutil.copy(src, readme) def _security_dir_changed(self, name, old, new): self.check_security_dir() def check_security_dir(self): self._mkdir(self.security_dir, 0o40700) def _pid_dir_changed(self, name, old, new): self.check_pid_dir() def check_pid_dir(self): self._mkdir(self.pid_dir, 0o40700) def _static_dir_changed(self, name, old, new): self.check_startup_dir() def check_static_dir(self): self._mkdir(self.static_dir) custom = os.path.join(self.static_dir, 'custom') self._mkdir(custom) from IPython.html import DEFAULT_STATIC_FILES_PATH for fname in ('custom.js', 'custom.css'): src = os.path.join(DEFAULT_STATIC_FILES_PATH, 'custom', fname) dest = os.path.join(custom, fname) if not os.path.exists(src): self.log.warn("Could not copy default file to static dir. Source file %s does not exist.", src) continue if not os.path.exists(dest): shutil.copy(src, dest) def check_dirs(self): self.check_security_dir() self.check_log_dir() self.check_pid_dir() self.check_startup_dir() self.check_static_dir() def copy_config_file(self, config_file, path=None, overwrite=False): """Copy a default config file into the active profile directory. Default configuration files are kept in :mod:`IPython.config.default`. This function moves these from that location to the working profile directory. """ dst = os.path.join(self.location, config_file) if os.path.isfile(dst) and not overwrite: return False if path is None: path = os.path.join(get_ipython_package_dir(), u'config', u'profile', u'default') src = os.path.join(path, config_file) shutil.copy(src, dst) return True @classmethod def create_profile_dir(cls, profile_dir, config=None): """Create a new profile directory given a full path. Parameters ---------- profile_dir : str The full path to the profile directory. If it does exist, it will be used. If not, it will be created. """ return cls(location=profile_dir, config=config) @classmethod def create_profile_dir_by_name(cls, path, name=u'default', config=None): """Create a profile dir by profile name and path. Parameters ---------- path : unicode The path (directory) to put the profile directory in. name : unicode The name of the profile. The name of the profile directory will be "profile_". """ if not os.path.isdir(path): raise ProfileDirError('Directory not found: %s' % path) profile_dir = os.path.join(path, u'profile_' + name) return cls(location=profile_dir, config=config) @classmethod def find_profile_dir_by_name(cls, ipython_dir, name=u'default', config=None): """Find an existing profile dir by profile name, return its ProfileDir. This searches through a sequence of paths for a profile dir. If it is not found, a :class:`ProfileDirError` exception will be raised. The search path algorithm is: 1. ``os.getcwdu()`` 2. ``ipython_dir`` Parameters ---------- ipython_dir : unicode or str The IPython directory to use. name : unicode or str The name of the profile. The name of the profile directory will be "profile_". """ dirname = u'profile_' + name paths = [os.getcwdu(), ipython_dir] for p in paths: profile_dir = os.path.join(p, dirname) if os.path.isdir(profile_dir): return cls(location=profile_dir, config=config) else: raise ProfileDirError('Profile directory not found in paths: %s' % dirname) @classmethod def find_profile_dir(cls, profile_dir, config=None): """Find/create a profile dir and return its ProfileDir. This will create the profile directory if it doesn't exist. Parameters ---------- profile_dir : unicode or str The path of the profile directory. This is expanded using :func:`IPython.utils.genutils.expand_path`. """ profile_dir = expand_path(profile_dir) if not os.path.isdir(profile_dir): raise ProfileDirError('Profile directory not found: %s' % profile_dir) return cls(location=profile_dir, config=config)