Synnefo

#!/usr/bin/env python

from getpass import getuser

from optparse import OptionParser

from os.path import basename

from sys import argv, exit, stdin

from pithos.lib.client import Client, Fault

import json

import logging

DEFAULT_HOST = '127.0.0.1:8000'

DEFAULT_API = 'v1'

_cli_commands = {}

def cli_command(*args):

    def decorator(cls):

        cls.commands = args

        for name in args:

            _cli_commands[name] = cls

        return cls

    return decorator

def class_for_cli_command(name):

    return _cli_commands[name]

def print_dict(d, header='name'):

    if header:

        print d.pop(header)

    for key, val in sorted(d.items()):

        print '%s: %s' % (key.rjust(15), val)

class Command(object):

    def __init__(self, argv):

        parser = OptionParser()

        parser.add_option('--host', dest='host', metavar='HOST', default=DEFAULT_HOST,

                            help='use server HOST')

        parser.add_option('--user', dest='user', metavar='USERNAME', default=getuser(),

                            help='use account USERNAME')

        parser.add_option('--api', dest='api', metavar='API', default=DEFAULT_API,

                            help='use api API')

        parser.add_option('-v', action='store_true', dest='verbose', default=False,

                            help='use verbose output')

        parser.add_option('-d', action='store_true', dest='debug', default=False,

                            help='use debug output')

        self.add_options(parser)

        options, args = parser.parse_args(argv)

        # Add options to self

        for opt in parser.option_list:

            key = opt.dest

            if key:

                val = getattr(options, key)

                setattr(self, key, val)

        self.client = Client(self.host, self.user, self.api, self.verbose, self.debug)

        self.parser = parser

        self.args = args

    def add_options(self, parser):

        pass

    def execute(self, *args):

        pass

@cli_command('list', 'ls')

class List(Command):

    syntax = '[container]'

    description = 'list containers or objects'

    def add_options(self, parser):

        parser.add_option('-l', action='store_true', dest='detail',

                          default=False, help='show detailed output')

        parser.add_option('-n', action='store', type='int', dest='limit',

                          default=1000, help='show limited output')

        parser.add_option('--marker', action='store', type='str',

                          dest='marker', default=None,

                          help='show output greater then marker')

        parser.add_option('--prefix', action='store', type='str',

                          dest='prefix', default=None,

                          help='show output starting with prefix')

        parser.add_option('--delimiter', action='store', type='str',

                          dest='delimiter', default=None,

                          help='show output up to the delimiter')

        parser.add_option('--path', action='store', type='str',

                          dest='path', default=None,

                          help='show output starting with prefix up to /')

        parser.add_option('--meta', action='store', type='str',

                          dest='meta', default=None,

                          help='show output having the specified meta keys')

        parser.add_option('--if-modified-since', action='store', type='str',

                          dest='if_modified_since', default=None,

                          help='show output if modified since then')

        parser.add_option('--if-unmodified-since', action='store', type='str',

                          dest='if_unmodified_since', default=None,

                          help='show output if not modified since then')

    def execute(self, container=None):

        if container:

            self.list_objects(container)

        else:

            self.list_containers()

    def list_containers(self):

        l = self.client.list_containers(self.detail, self.limit, self.marker,

                                        self.if_modified_since,

                                        self.if_unmodified_since)

        if self.detail:

            for container in l:

                print_dict(container)

                print

        else:

            if self.verbose:

                print l

            else:

                print l.split('Traceback')[0]

    def list_objects(self, container):

        l = self.client.list_objects(container, self.detail, self.limit,

                                        self.marker, self.prefix,

                                        self.delimiter, self.path,

                                        self.meta,

                                        self.if_modified_since,

                                        self.if_unmodified_since)

        if self.detail:

            for obj in l:

                print_dict(obj)

                print

        else:

            if self.verbose:

                print l

            else:

                print l.split('Traceback')[0]

@cli_command('meta')

class Meta(Command):

    syntax = '[<container>[/<object>]]'

    description = 'get the metadata of an account, a container or an object'

    def execute(self, path=''):

        container, sep, object = path.partition('/')

        if object:

            meta = self.client.retrieve_object_metadata(container, object)

        elif container:

            meta = self.client.retrieve_container_metadata(container)

        else:

            meta = self.client.account_metadata()

        print_dict(meta, header=None)

@cli_command('create')

class CreateContainer(Command):

    syntax = '<container>'

    description = 'create a container'

    def execute(self, container):

        ret = self.client.create_container(container)

        if not ret:

            print 'Container already exists'

@cli_command('delete', 'rm')

class Delete(Command):

    syntax = '<container>[/<object>]'

    description = 'delete a container or an object'

    def execute(self, path):

        container, sep, object = path.partition('/')

        if object:

            self.client.delete_object(container, object)

        else:

            self.client.delete_container(container)

@cli_command('get')

class GetObject(Command):

    syntax = '<container>/<object>'

    description = 'get the data of an object'

    def execute(self, path):

        container, sep, object = path.partition('/')

        print self.client.retrieve_object(container, object)

@cli_command('put')

class PutObject(Command):

    syntax = '<container>/<object> <path>'

    description = 'create or update an object with contents of path'

    def execute(self, path, srcpath):

        container, sep, object = path.partition('/')

        f = open(srcpath) if srcpath != '-' else stdin

        data = f.read()

        self.client.create_object(container, object, data)

        f.close()

@cli_command('copy', 'cp')

class CopyObject(Command):

    syntax = '<src container>/<src object> [<dst container>/]<dst object>'

    description = 'copies an object to a different location'

    def execute(self, src, dst):

        src_container, sep, src_object = src.partition('/')

        dst_container, sep, dst_object = dst.partition('/')

        if not sep:

            dst_container = src_container

            dst_object = dst

        self.client.copy_object(src_container, src_object, dst_container, dst_object)

@cli_command('set')

class SetMeta(Command):

    syntax = '[<container>[/<object>]] key=val [key=val] [...]'

    description = 'set metadata'

    def execute(self, path, *args):

        #in case of account fix the args

        print path

        if path.find('='):

            args = list(args)

            args.append(path)

            args = tuple(args)

            path = ''

        meta = {}

        for arg in args:

            key, sep, val = arg.partition('=')

            meta[key.strip()] = val.strip()

        container, sep, object = path.partition('/')

        if object:

            self.client.update_object_metadata(container, object, **meta)

        elif container:

            self.client.update_container_metadata(container, **meta)

        else:

            self.client.update_account_metadata(**meta)

def print_usage():

    cmd = Command([])

    parser = cmd.parser

    parser.usage = '%prog <command> [options]'

    parser.print_help()

    commands = []

    for cls in set(_cli_commands.values()):

        name = ', '.join(cls.commands)

        description = getattr(cls, 'description', '')

        commands.append('  %s %s' % (name.ljust(12), description))

    print '\nCommands:\n' + '\n'.join(sorted(commands))

def main():

    try:

        name = argv[1]

        cls = class_for_cli_command(name)

    except (IndexError, KeyError):

        print_usage()

        exit(1)

    cmd = cls(argv[2:])

    try:

        cmd.execute(*cmd.args)

    except TypeError:

        cmd.parser.usage = '%%prog %s [options] %s' % (name, cmd.syntax)

        cmd.parser.print_help()

        exit(1)

    except Fault, f:

        print f.data

if __name__ == '__main__':

    main()