RhodeCode / rhodecode / lib / db_manage.py

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# -*- coding: utf-8 -*-
"""
    rhodecode.lib.db_manage
    ~~~~~~~~~~~~~~~~~~~~~~~

    Database creation, and setup module for RhodeCode. Used for creation
    of database as well as for migration operations

    :created_on: Apr 10, 2010
    :author: marcink
    :copyright: (C) 2010-2012 Marcin Kuzminski <marcin@python-works.com>
    :license: GPLv3, see COPYING for more details.
"""
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import os
import sys
import uuid
import logging
from os.path import dirname as dn, join as jn

from rhodecode import __dbversion__, __py_version__

from rhodecode.model.user import UserModel
from rhodecode.lib.utils import ask_ok
from rhodecode.model import init_model
from rhodecode.model.db import User, Permission, RhodeCodeUi, \
    RhodeCodeSetting, UserToPerm, DbMigrateVersion, RepoGroup, \
    UserRepoGroupToPerm

from sqlalchemy.engine import create_engine
from rhodecode.model.repos_group import ReposGroupModel
#from rhodecode.model import meta
from rhodecode.model.meta import Session, Base


log = logging.getLogger(__name__)


def notify(msg):
    """
    Notification for migrations messages
    """
    ml = len(msg) + (4 * 2)
    print >> sys.stdout, ('*** %s ***\n%s' % (msg, '*' * ml)).upper()


class DbManage(object):
    def __init__(self, log_sql, dbconf, root, tests=False, cli_args={}):
        self.dbname = dbconf.split('/')[-1]
        self.tests = tests
        self.root = root
        self.dburi = dbconf
        self.log_sql = log_sql
        self.db_exists = False
        self.cli_args = cli_args
        self.init_db()
        global ask_ok

        if self.cli_args.get('force_ask') is True:
            ask_ok = lambda *args, **kwargs: True
        elif self.cli_args.get('force_ask') is False:
            ask_ok = lambda *args, **kwargs: False

    def init_db(self):
        engine = create_engine(self.dburi, echo=self.log_sql)
        init_model(engine)
        self.sa = Session()

    def create_tables(self, override=False):
        """
        Create a auth database
        """

        log.info("Any existing database is going to be destroyed")
        if self.tests:
            destroy = True
        else:
            destroy = ask_ok('Are you sure to destroy old database ? [y/n]')
        if not destroy:
            sys.exit('Nothing done')
        if destroy:
            Base.metadata.drop_all()

        checkfirst = not override
        Base.metadata.create_all(checkfirst=checkfirst)
        log.info('Created tables for %s' % self.dbname)

    def set_db_version(self):
        ver = DbMigrateVersion()
        ver.version = __dbversion__
        ver.repository_id = 'rhodecode_db_migrations'
        ver.repository_path = 'versions'
        self.sa.add(ver)
        log.info('db version set to: %s' % __dbversion__)

    def upgrade(self):
        """
        Upgrades given database schema to given revision following
        all needed steps, to perform the upgrade

        """

        from rhodecode.lib.dbmigrate.migrate.versioning import api
        from rhodecode.lib.dbmigrate.migrate.exceptions import \
            DatabaseNotControlledError

        if 'sqlite' in self.dburi:
            print (
               '********************** WARNING **********************\n'
               'Make sure your version of sqlite is at least 3.7.X.  \n'
               'Earlier versions are known to fail on some migrations\n'
               '*****************************************************\n'
            )
        upgrade = ask_ok('You are about to perform database upgrade, make '
                         'sure You backed up your database before. '
                         'Continue ? [y/n]')
        if not upgrade:
            sys.exit('Nothing done')

        repository_path = jn(dn(dn(dn(os.path.realpath(__file__)))),
                             'rhodecode/lib/dbmigrate')
        db_uri = self.dburi

        try:
            curr_version = api.db_version(db_uri, repository_path)
            msg = ('Found current database under version'
                 ' control with version %s' % curr_version)

        except (RuntimeError, DatabaseNotControlledError):
            curr_version = 1
            msg = ('Current database is not under version control. Setting'
                   ' as version %s' % curr_version)
            api.version_control(db_uri, repository_path, curr_version)

        notify(msg)

        if curr_version == __dbversion__:
            sys.exit('This database is already at the newest version')

        #======================================================================
        # UPGRADE STEPS
        #======================================================================

        class UpgradeSteps(object):
            """
            Those steps follow schema versions so for example schema
            for example schema with seq 002 == step_2 and so on.
            """

            def __init__(self, klass):
                self.klass = klass

            def step_0(self):
                # step 0 is the schema upgrade, and than follow proper upgrades
                notify('attempting to do database upgrade to version %s' \
                                % __dbversion__)
                api.upgrade(db_uri, repository_path, __dbversion__)
                notify('Schema upgrade completed')

            def step_1(self):
                pass

            def step_2(self):
                notify('Patching repo paths for newer version of RhodeCode')
                self.klass.fix_repo_paths()

                notify('Patching default user of RhodeCode')
                self.klass.fix_default_user()

                log.info('Changing ui settings')
                self.klass.create_ui_settings()

            def step_3(self):
                notify('Adding additional settings into RhodeCode db')
                self.klass.fix_settings()
                notify('Adding ldap defaults')
                self.klass.create_ldap_options(skip_existing=True)

            def step_4(self):
                notify('create permissions and fix groups')
                self.klass.create_permissions()
                self.klass.fixup_groups()

            def step_5(self):
                pass

            def step_6(self):

                notify('re-checking permissions')
                self.klass.create_permissions()

                notify('installing new UI options')
                sett4 = RhodeCodeSetting('show_public_icon', True)
                Session().add(sett4)
                sett5 = RhodeCodeSetting('show_private_icon', True)
                Session().add(sett5)
                sett6 = RhodeCodeSetting('stylify_metatags', False)
                Session().add(sett6)

                notify('fixing old PULL hook')
                _pull = RhodeCodeUi.get_by_key('preoutgoing.pull_logger')
                if _pull:
                    _pull.ui_key = RhodeCodeUi.HOOK_PULL
                    Session().add(_pull)

                notify('fixing old PUSH hook')
                _push = RhodeCodeUi.get_by_key('pretxnchangegroup.push_logger')
                if _push:
                    _push.ui_key = RhodeCodeUi.HOOK_PUSH
                    Session().add(_push)

                notify('installing new pre-push hook')
                hooks4 = RhodeCodeUi()
                hooks4.ui_section = 'hooks'
                hooks4.ui_key = RhodeCodeUi.HOOK_PRE_PUSH
                hooks4.ui_value = 'python:rhodecode.lib.hooks.pre_push'
                Session().add(hooks4)

                notify('installing new pre-pull hook')
                hooks6 = RhodeCodeUi()
                hooks6.ui_section = 'hooks'
                hooks6.ui_key = RhodeCodeUi.HOOK_PRE_PULL
                hooks6.ui_value = 'python:rhodecode.lib.hooks.pre_pull'
                Session().add(hooks6)

                notify('installing hgsubversion option')
                # enable hgsubversion disabled by default
                hgsubversion = RhodeCodeUi()
                hgsubversion.ui_section = 'extensions'
                hgsubversion.ui_key = 'hgsubversion'
                hgsubversion.ui_value = ''
                hgsubversion.ui_active = False
                Session().add(hgsubversion)

                notify('installing hg git option')
                # enable hggit disabled by default
                hggit = RhodeCodeUi()
                hggit.ui_section = 'extensions'
                hggit.ui_key = 'hggit'
                hggit.ui_value = ''
                hggit.ui_active = False
                Session().add(hggit)

                notify('re-check default permissions')
                default_user = User.get_by_username(User.DEFAULT_USER)
                perm = Permission.get_by_key('hg.fork.repository')
                reg_perm = UserToPerm()
                reg_perm.user = default_user
                reg_perm.permission = perm
                Session().add(reg_perm)

            def step_7(self):
                perm_fixes = self.klass.reset_permissions(User.DEFAULT_USER)
                Session().commit()
                if perm_fixes:
                    notify('There was an inconsistent state of permissions '
                           'detected for default user. Permissions are now '
                           'reset to the default value for default user. '
                           'Please validate and check default permissions '
                           'in admin panel')

        upgrade_steps = [0] + range(curr_version + 1, __dbversion__ + 1)

        # CALL THE PROPER ORDER OF STEPS TO PERFORM FULL UPGRADE
        _step = None
        for step in upgrade_steps:
            notify('performing upgrade step %s' % step)
            getattr(UpgradeSteps(self), 'step_%s' % step)()
            self.sa.commit()
            _step = step

        notify('upgrade to version %s successful' % _step)

    def fix_repo_paths(self):
        """
        Fixes a old rhodecode version path into new one without a '*'
        """

        paths = self.sa.query(RhodeCodeUi)\
                .filter(RhodeCodeUi.ui_key == '/')\
                .scalar()

        paths.ui_value = paths.ui_value.replace('*', '')

        try:
            self.sa.add(paths)
            self.sa.commit()
        except:
            self.sa.rollback()
            raise

    def fix_default_user(self):
        """
        Fixes a old default user with some 'nicer' default values,
        used mostly for anonymous access
        """
        def_user = self.sa.query(User)\
                .filter(User.username == 'default')\
                .one()

        def_user.name = 'Anonymous'
        def_user.lastname = 'User'
        def_user.email = 'anonymous@rhodecode.org'

        try:
            self.sa.add(def_user)
            self.sa.commit()
        except:
            self.sa.rollback()
            raise

    def fix_settings(self):
        """
        Fixes rhodecode settings adds ga_code key for google analytics
        """

        hgsettings3 = RhodeCodeSetting('ga_code', '')

        try:
            self.sa.add(hgsettings3)
            self.sa.commit()
        except:
            self.sa.rollback()
            raise

    def admin_prompt(self, second=False):
        if not self.tests:
            import getpass

            # defaults
            defaults = self.cli_args
            username = defaults.get('username')
            password = defaults.get('password')
            email = defaults.get('email')

            def get_password():
                password = getpass.getpass('Specify admin password '
                                           '(min 6 chars):')
                confirm = getpass.getpass('Confirm password:')

                if password != confirm:
                    log.error('passwords mismatch')
                    return False
                if len(password) < 6:
                    log.error('password is to short use at least 6 characters')
                    return False

                return password
            if username is None:
                username = raw_input('Specify admin username:')
            if password is None:
                password = get_password()
                if not password:
                    #second try
                    password = get_password()
                    if not password:
                        sys.exit()
            if email is None:
                email = raw_input('Specify admin email:')
            self.create_user(username, password, email, True)
        else:
            log.info('creating admin and regular test users')
            from rhodecode.tests import TEST_USER_ADMIN_LOGIN, \
            TEST_USER_ADMIN_PASS, TEST_USER_ADMIN_EMAIL, \
            TEST_USER_REGULAR_LOGIN, TEST_USER_REGULAR_PASS, \
            TEST_USER_REGULAR_EMAIL, TEST_USER_REGULAR2_LOGIN, \
            TEST_USER_REGULAR2_PASS, TEST_USER_REGULAR2_EMAIL

            self.create_user(TEST_USER_ADMIN_LOGIN, TEST_USER_ADMIN_PASS,
                             TEST_USER_ADMIN_EMAIL, True)

            self.create_user(TEST_USER_REGULAR_LOGIN, TEST_USER_REGULAR_PASS,
                             TEST_USER_REGULAR_EMAIL, False)

            self.create_user(TEST_USER_REGULAR2_LOGIN, TEST_USER_REGULAR2_PASS,
                             TEST_USER_REGULAR2_EMAIL, False)

    def create_ui_settings(self):
        """
        Creates ui settings, fills out hooks
        and disables dotencode
        """

        #HOOKS
        hooks1_key = RhodeCodeUi.HOOK_UPDATE
        hooks1_ = self.sa.query(RhodeCodeUi)\
            .filter(RhodeCodeUi.ui_key == hooks1_key).scalar()

        hooks1 = RhodeCodeUi() if hooks1_ is None else hooks1_
        hooks1.ui_section = 'hooks'
        hooks1.ui_key = hooks1_key
        hooks1.ui_value = 'hg update >&2'
        hooks1.ui_active = False
        self.sa.add(hooks1)

        hooks2_key = RhodeCodeUi.HOOK_REPO_SIZE
        hooks2_ = self.sa.query(RhodeCodeUi)\
            .filter(RhodeCodeUi.ui_key == hooks2_key).scalar()
        hooks2 = RhodeCodeUi() if hooks2_ is None else hooks2_
        hooks2.ui_section = 'hooks'
        hooks2.ui_key = hooks2_key
        hooks2.ui_value = 'python:rhodecode.lib.hooks.repo_size'
        self.sa.add(hooks2)

        hooks3 = RhodeCodeUi()
        hooks3.ui_section = 'hooks'
        hooks3.ui_key = RhodeCodeUi.HOOK_PUSH
        hooks3.ui_value = 'python:rhodecode.lib.hooks.log_push_action'
        self.sa.add(hooks3)

        hooks4 = RhodeCodeUi()
        hooks4.ui_section = 'hooks'
        hooks4.ui_key = RhodeCodeUi.HOOK_PRE_PUSH
        hooks4.ui_value = 'python:rhodecode.lib.hooks.pre_push'
        self.sa.add(hooks4)

        hooks5 = RhodeCodeUi()
        hooks5.ui_section = 'hooks'
        hooks5.ui_key = RhodeCodeUi.HOOK_PULL
        hooks5.ui_value = 'python:rhodecode.lib.hooks.log_pull_action'
        self.sa.add(hooks5)

        hooks6 = RhodeCodeUi()
        hooks6.ui_section = 'hooks'
        hooks6.ui_key = RhodeCodeUi.HOOK_PRE_PULL
        hooks6.ui_value = 'python:rhodecode.lib.hooks.pre_pull'
        self.sa.add(hooks6)

        # enable largefiles
        largefiles = RhodeCodeUi()
        largefiles.ui_section = 'extensions'
        largefiles.ui_key = 'largefiles'
        largefiles.ui_value = ''
        self.sa.add(largefiles)

        # enable hgsubversion disabled by default
        hgsubversion = RhodeCodeUi()
        hgsubversion.ui_section = 'extensions'
        hgsubversion.ui_key = 'hgsubversion'
        hgsubversion.ui_value = ''
        hgsubversion.ui_active = False
        self.sa.add(hgsubversion)

        # enable hggit disabled by default
        hggit = RhodeCodeUi()
        hggit.ui_section = 'extensions'
        hggit.ui_key = 'hggit'
        hggit.ui_value = ''
        hggit.ui_active = False
        self.sa.add(hggit)

    def create_ldap_options(self, skip_existing=False):
        """Creates ldap settings"""

        for k, v in [('ldap_active', 'false'), ('ldap_host', ''),
                    ('ldap_port', '389'), ('ldap_tls_kind', 'PLAIN'),
                    ('ldap_tls_reqcert', ''), ('ldap_dn_user', ''),
                    ('ldap_dn_pass', ''), ('ldap_base_dn', ''),
                    ('ldap_filter', ''), ('ldap_search_scope', ''),
                    ('ldap_attr_login', ''), ('ldap_attr_firstname', ''),
                    ('ldap_attr_lastname', ''), ('ldap_attr_email', '')]:

            if skip_existing and RhodeCodeSetting.get_by_name(k) != None:
                log.debug('Skipping option %s' % k)
                continue
            setting = RhodeCodeSetting(k, v)
            self.sa.add(setting)

    def fixup_groups(self):
        def_usr = User.get_by_username('default')
        for g in RepoGroup.query().all():
            g.group_name = g.get_new_name(g.name)
            self.sa.add(g)
            # get default perm
            default = UserRepoGroupToPerm.query()\
                .filter(UserRepoGroupToPerm.group == g)\
                .filter(UserRepoGroupToPerm.user == def_usr)\
                .scalar()

            if default is None:
                log.debug('missing default permission for group %s adding' % g)
                ReposGroupModel()._create_default_perms(g)

    def reset_permissions(self, username):
        """
        Resets permissions to default state, usefull when old systems had
        bad permissions, we must clean them up

        :param username:
        :type username:
        """
        default_user = User.get_by_username(username)
        if not default_user:
            return

        u2p = UserToPerm.query()\
            .filter(UserToPerm.user == default_user).all()
        fixed = False
        if len(u2p) != len(User.DEFAULT_PERMISSIONS):
            for p in u2p:
                Session().delete(p)
            fixed = True
            self.populate_default_permissions()
        return fixed

    def config_prompt(self, test_repo_path='', retries=3):
        defaults = self.cli_args
        _path = defaults.get('repos_location')
        if retries == 3:
            log.info('Setting up repositories config')

        if _path is not None:
            path = _path
        elif not self.tests and not test_repo_path:
            path = raw_input(
                 'Enter a valid absolute path to store repositories. '
                 'All repositories in that path will be added automatically:'
            )
        else:
            path = test_repo_path
        path_ok = True

        # check proper dir
        if not os.path.isdir(path):
            path_ok = False
            log.error('Given path %s is not a valid directory' % path)

        elif not os.path.isabs(path):
            path_ok = False
            log.error('Given path %s is not an absolute path' % path)

        # check write access
        elif not os.access(path, os.W_OK) and path_ok:
            path_ok = False
            log.error('No write permission to given path %s' % path)

        if retries == 0:
            sys.exit('max retries reached')
        if path_ok is False:
            retries -= 1
            return self.config_prompt(test_repo_path, retries)

        real_path = os.path.normpath(os.path.realpath(path))

        if real_path != os.path.normpath(path):
            if not ask_ok(('Path looks like a symlink, Rhodecode will store '
                           'given path as %s ? [y/n]') % (real_path)):
                log.error('Canceled by user')
                sys.exit(-1)

        return real_path

    def create_settings(self, path):

        self.create_ui_settings()

        #HG UI OPTIONS
        web1 = RhodeCodeUi()
        web1.ui_section = 'web'
        web1.ui_key = 'push_ssl'
        web1.ui_value = 'false'

        web2 = RhodeCodeUi()
        web2.ui_section = 'web'
        web2.ui_key = 'allow_archive'
        web2.ui_value = 'gz zip bz2'

        web3 = RhodeCodeUi()
        web3.ui_section = 'web'
        web3.ui_key = 'allow_push'
        web3.ui_value = '*'

        web4 = RhodeCodeUi()
        web4.ui_section = 'web'
        web4.ui_key = 'baseurl'
        web4.ui_value = '/'

        paths = RhodeCodeUi()
        paths.ui_section = 'paths'
        paths.ui_key = '/'
        paths.ui_value = path

        phases = RhodeCodeUi()
        phases.ui_section = 'phases'
        phases.ui_key = 'publish'
        phases.ui_value = False

        sett1 = RhodeCodeSetting('realm', 'RhodeCode authentication')
        sett2 = RhodeCodeSetting('title', 'RhodeCode')
        sett3 = RhodeCodeSetting('ga_code', '')

        sett4 = RhodeCodeSetting('show_public_icon', True)
        sett5 = RhodeCodeSetting('show_private_icon', True)
        sett6 = RhodeCodeSetting('stylify_metatags', False)

        self.sa.add(web1)
        self.sa.add(web2)
        self.sa.add(web3)
        self.sa.add(web4)
        self.sa.add(paths)
        self.sa.add(sett1)
        self.sa.add(sett2)
        self.sa.add(sett3)
        self.sa.add(sett4)
        self.sa.add(sett5)
        self.sa.add(sett6)

        self.create_ldap_options()

        log.info('created ui config')

    def create_user(self, username, password, email='', admin=False):
        log.info('creating user %s' % username)
        UserModel().create_or_update(username, password, email,
                                     firstname='RhodeCode', lastname='Admin',
                                     active=True, admin=admin)

    def create_default_user(self):
        log.info('creating default user')
        # create default user for handling default permissions.
        UserModel().create_or_update(username='default',
                              password=str(uuid.uuid1())[:8],
                              email='anonymous@rhodecode.org',
                              firstname='Anonymous', lastname='User')

    def create_permissions(self):
        # module.(access|create|change|delete)_[name]
        # module.(none|read|write|admin)

        for p in Permission.PERMS:
            if not Permission.get_by_key(p[0]):
                new_perm = Permission()
                new_perm.permission_name = p[0]
                new_perm.permission_longname = p[0]
                self.sa.add(new_perm)

    def populate_default_permissions(self):
        log.info('creating default user permissions')

        default_user = User.get_by_username('default')

        for def_perm in User.DEFAULT_PERMISSIONS:

            perm = self.sa.query(Permission)\
             .filter(Permission.permission_name == def_perm)\
             .scalar()
            if not perm:
                raise Exception(
                  'CRITICAL: permission %s not found inside database !!'
                  % def_perm
                )
            if not UserToPerm.query()\
                .filter(UserToPerm.permission == perm)\
                .filter(UserToPerm.user == default_user).scalar():
                reg_perm = UserToPerm()
                reg_perm.user = default_user
                reg_perm.permission = perm
                self.sa.add(reg_perm)

    def finish(self):
        """
        Function executed at the end of setup
        """
        if not __py_version__ >= (2, 6):
            notify('Python2.5 detected, please switch '
                   'egg:waitress#main -> egg:Paste#http '
                   'in your .ini file')
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