python-ganttclient/bin/nova-manage

#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4

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# Interactive shell based on Django:
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"""
  CLI interface for nova management.
"""

import os
import sys
import time

import IPy

# If ../nova/__init__.py exists, add ../ to Python search path, so that
# it will override what happens to be installed in /usr/(local/)lib/python...
possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
                                   os.pardir,
                                   os.pardir))
if os.path.exists(os.path.join(possible_topdir, 'nova', '__init__.py')):
    sys.path.insert(0, possible_topdir)

from nova import db
from nova import exception
from nova import flags
from nova import quota
from nova import utils
from nova.auth import manager
from nova.cloudpipe import pipelib
from nova.endpoint import cloud


FLAGS = flags.FLAGS


class VpnCommands(object):
    """Class for managing VPNs."""

    def __init__(self):
        self.manager = manager.AuthManager()
        self.pipe = pipelib.CloudPipe(cloud.CloudController())

    def list(self):
        """Print a listing of the VPNs for all projects."""
        print "%-12s\t" % 'project',
        print "%-12s\t" % 'ip:port',
        print "%s" % 'state'
        for project in self.manager.get_projects():
            print "%-12s\t" % project.name,
            print "%s:%s\t" % (project.vpn_ip, project.vpn_port),

            vpn = self._vpn_for(project.id)
            if vpn:
                command = "ping -c1 -w1 %s > /dev/null; echo $?"
                out, _err = utils.execute(command % vpn['private_dns_name'],
                                          check_exit_code=False)
                if out.strip() == '0':
                    net = 'up'
                else:
                    net = 'down'
                print vpn['private_dns_name'],
                print vpn['node_name'],
                print vpn['instance_id'],
                print vpn['state_description'],
                print net

            else:
                print None

    def _vpn_for(self, project_id):
        """Get the VPN instance for a project ID."""
        for instance in db.instance_get_all():
            if (instance['image_id'] == FLAGS.vpn_image_id
                and not instance['state_description'] in
                    ['shutting_down', 'shutdown']
                and instance['project_id'] == project_id):
                return instance

    def spawn(self):
        """Run all VPNs."""
        for p in reversed(self.manager.get_projects()):
            if not self._vpn_for(p.id):
                print 'spawning %s' % p.id
                self.pipe.launch_vpn_instance(p.id)
                time.sleep(10)

    def run(self, project_id):
        """Start the VPN for a given project."""
        self.pipe.launch_vpn_instance(project_id)


class ShellCommands(object):
    def run(self):
        "Runs a Python interactive interpreter. Tries to use IPython, if it's available."
        try:
            import IPython
            # Explicitly pass an empty list as arguments, because otherwise IPython
            # would use sys.argv from this script.
            shell = IPython.Shell.IPShell(argv=[])
            shell.mainloop()
        except ImportError:
            import code
            try: # Try activating rlcompleter, because it's handy.
                import readline
            except ImportError:
                pass
            else:
                # We don't have to wrap the following import in a 'try', because
                # we already know 'readline' was imported successfully.
                import rlcompleter
                readline.parse_and_bind("tab:complete")
            code.interact()


class RoleCommands(object):
    """Class for managing roles."""

    def __init__(self):
        self.manager = manager.AuthManager()

    def add(self, user, role, project=None):
        """adds role to user
        if project is specified, adds project specific role
        arguments: user, role [project]"""
        self.manager.add_role(user, role, project)

    def has(self, user, role, project=None):
        """checks to see if user has role
        if project is specified, returns True if user has
        the global role and the project role
        arguments: user, role [project]"""
        print self.manager.has_role(user, role, project)

    def remove(self, user, role, project=None):
        """removes role from user
        if project is specified, removes project specific role
        arguments: user, role [project]"""
        self.manager.remove_role(user, role, project)


class UserCommands(object):
    """Class for managing users."""

    @staticmethod
    def _print_export(user):
        """Print export variables to use with API."""
        print 'export EC2_ACCESS_KEY=%s' % user.access
        print 'export EC2_SECRET_KEY=%s' % user.secret


    def __init__(self):
        self.manager = manager.AuthManager()

    def admin(self, name, access=None, secret=None):
        """creates a new admin and prints exports
        arguments: name [access] [secret]"""
        user = self.manager.create_user(name, access, secret, True)
        self._print_export(user)

    def create(self, name, access=None, secret=None):
        """creates a new user and prints exports
        arguments: name [access] [secret]"""
        user = self.manager.create_user(name, access, secret, False)
        self._print_export(user)

    def delete(self, name):
        """deletes an existing user
        arguments: name"""
        self.manager.delete_user(name)

    def exports(self, name):
        """prints access and secrets for user in export format
        arguments: name"""
        user = self.manager.get_user(name)
        if user:
            self._print_export(user)
        else:
            print "User %s doesn't exist" % name

    def list(self):
        """lists all users
        arguments: <none>"""
        for user in self.manager.get_users():
            print user.name


class ProjectCommands(object):
    """Class for managing projects."""

    def __init__(self):
        self.manager = manager.AuthManager()

    def add(self, project, user):
        """Adds user to project
        arguments: project user"""
        self.manager.add_to_project(user, project)

    def create(self, name, project_manager, description=None):
        """Creates a new project
        arguments: name project_manager [description]"""
        self.manager.create_project(name, project_manager, description)

    def delete(self, name):
        """Deletes an existing project
        arguments: name"""
        self.manager.delete_project(name)

    def environment(self, project_id, user_id, filename='novarc'):
        """Exports environment variables to an sourcable file
        arguments: project_id user_id [filename='novarc]"""
        rc = self.manager.get_environment_rc(project_id, user_id)
        with open(filename, 'w') as f:
            f.write(rc)

    def list(self):
        """Lists all projects
        arguments: <none>"""
        for project in self.manager.get_projects():
            print project.name

    def quota(self, project_id, key=None, value=None):
        """Set or display quotas for project
        arguments: project_id [key] [value]"""
        if key:
            quo = {'project_id': project_id, key: value}
            try:
                db.quota_update(None, project_id, quo)
            except exception.NotFound:
                db.quota_create(None, quo)
        project_quota = quota.get_quota(None, project_id)
        for key, value in project_quota.iteritems():
            print '%s: %s' % (key, value)

    def remove(self, project, user):
        """Removes user from project
        arguments: project user"""
        self.manager.remove_from_project(user, project)

    def zipfile(self, project_id, user_id, filename='nova.zip'):
        """Exports credentials for project to a zip file
        arguments: project_id user_id [filename='nova.zip]"""
        zip_file = self.manager.get_credentials(user_id, project_id)
        with open(filename, 'w') as f:
            f.write(zip_file)


class FloatingIpCommands(object):
    """Class for managing floating ip."""

    def create(self, host, range):
        """Creates floating ips for host by range
        arguments: host ip_range"""
        for address in IPy.IP(range):
            db.floating_ip_create(None, {'address': str(address),
                                         'host': host})

    def delete(self, ip_range):
        """Deletes floating ips by range
        arguments: range"""
        for address in IPy.IP(ip_range):
            db.floating_ip_destroy(None, str(address))


    def list(self, host=None):
        """Lists all floating ips (optionally by host)
        arguments: [host]"""
        if host == None:
            floating_ips = db.floating_ip_get_all(None)
        else:
            floating_ips = db.floating_ip_get_all_by_host(None, host)
        for floating_ip in floating_ips:
            instance = None
            if floating_ip['fixed_ip']:
                instance = floating_ip['fixed_ip']['instance']['str_id']
            print "%s\t%s\t%s" % (floating_ip['host'],
                                  floating_ip['address'],
                                  instance)


CATEGORIES = [
    ('user', UserCommands),
    ('project', ProjectCommands),
    ('role', RoleCommands),
    ('shell', ShellCommands),
    ('vpn', VpnCommands),
    ('floating', FloatingIpCommands)
]


def lazy_match(name, key_value_tuples):
    """Finds all objects that have a key that case insensitively contains
    [name] key_value_tuples is a list of tuples of the form (key, value)
    returns a list of tuples of the form (key, value)"""
    result = []
    for (k, v) in key_value_tuples:
        if k.lower().find(name.lower()) == 0:
            result.append((k, v))
    if len(result) == 0:
        print "%s does not match any options:" % name
        for k, _v in key_value_tuples:
            print "\t%s" % k
        sys.exit(2)
    if len(result) > 1:
        print "%s matched multiple options:" % name
        for k, _v in result:
            print "\t%s" % k
        sys.exit(2)
    return result


def methods_of(obj):
    """Get all callable methods of an object that don't start with underscore
    returns a list of tuples of the form (method_name, method)"""
    result = []
    for i in dir(obj):
        if callable(getattr(obj, i)) and not i.startswith('_'):
            result.append((i, getattr(obj, i)))
    return result


def main():
    """Parse options and call the appropriate class/method."""
    utils.default_flagfile('/etc/nova/nova-manage.conf')
    argv = FLAGS(sys.argv)
    script_name = argv.pop(0)
    if len(argv) < 1:
        print script_name + " category action [<args>]"
        print "Available categories:"
        for k, _ in CATEGORIES:
            print "\t%s" % k
        sys.exit(2)
    category = argv.pop(0)
    matches = lazy_match(category, CATEGORIES)
    # instantiate the command group object
    category, fn = matches[0]
    command_object = fn()
    actions = methods_of(command_object)
    if len(argv) < 1:
        print script_name + " category action [<args>]"
        print "Available actions for %s category:" % category
        for k, _v in actions:
            print "\t%s" % k
        sys.exit(2)
    action = argv.pop(0)
    matches = lazy_match(action, actions)
    action, fn = matches[0]
    # call the action with the remaining arguments
    try:
        fn(*argv)
        sys.exit(0)
    except TypeError:
        print "Wrong number of arguments supplied"
        print "%s %s: %s" % (category, action, fn.__doc__)
        sys.exit(2)

if __name__ == '__main__':
    main()