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glance/bin/glance

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#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2011 OpenStack, LLC
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
This is the administration program for Glance. It is simply a command-line
interface for adding, modifying, and retrieving information about the images
stored in one or more Glance nodes.
"""
import functools
import gettext
import optparse
import os
import re
import sys
import time
# If ../glance/__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, 'glance', '__init__.py')):
sys.path.insert(0, possible_topdir)
gettext.install('glance', unicode=1)
from glance import client as glance_client
from glance import version
from glance.common import exception
from glance.common import utils as common_utils
from glance import utils
SUCCESS = 0
FAILURE = 1
#TODO(sirp): make more of the actions use this decorator
def catch_error(action):
"""Decorator to provide sensible default error handling for actions."""
def wrap(func):
@functools.wraps(func)
def wrapper(*args, **kwargs):
try:
ret = func(*args, **kwargs)
return SUCCESS if ret is None else ret
except Exception, e:
print "Failed to %s. Got error:" % action
pieces = unicode(e).split('\n')
for piece in pieces:
print piece
return FAILURE
return wrapper
return wrap
def get_percent_done(image):
try:
pct_done = image['size'] * 100 / int(image['expected_size'])
except (ValueError, ZeroDivisionError):
# NOTE(sirp): Ignore if expected_size isn't a number, or if it's 0
pct_done = "UNKNOWN"
return pct_done
def get_image_fields_from_args(args):
"""
Validate the set of arguments passed as field name/value pairs
and return them as a mapping.
"""
fields = {}
for arg in args:
pieces = arg.strip(',').split('=')
if len(pieces) != 2:
msg = ("Arguments should be in the form of field=value. "
"You specified %s." % arg)
raise RuntimeError(msg)
fields[pieces[0]] = pieces[1]
fields = dict([(k.lower().replace('-', '_'), v)
for k, v in fields.items()])
return fields
def get_image_filters_from_args(args):
"""Build a dictionary of query filters based on the supplied args."""
try:
fields = get_image_fields_from_args(args)
except RuntimeError, e:
print e
return FAILURE
SUPPORTED_FILTERS = ['name', 'disk_format', 'container_format', 'status',
'size_min', 'size_max']
filters = {}
for (key, value) in fields.items():
if key not in SUPPORTED_FILTERS:
key = 'property-%s' % (key,)
filters[key] = value
return filters
def print_image_formatted(client, image):
"""
Formatted print of image metadata.
:param client: The Glance client object
:param image: The image metadata
"""
print "URI: %s://%s/images/%s" % (client.use_ssl and "https" or "http",
client.host,
image['id'])
print "Id: %s" % image['id']
print "Public: " + (image['is_public'] and "Yes" or "No")
print "Name: %s" % image['name']
print "Status: %s" % image['status']
print "Size: %d" % int(image['size'])
print "Location: %s" % image['location']
print "Disk format: %s" % image['disk_format']
print "Container format: %s" % image['container_format']
if len(image['properties']) > 0:
for k, v in image['properties'].items():
print "Property '%s': %s" % (k, v)
def image_add(options, args):
"""
%(prog)s add [options] <field1=value1 field2=value2 ...> [ < /path/to/image ]
Adds a new image to Glance. Specify metadata fields as arguments.
SPECIFYING IMAGE METADATA
===============================================================================
All field/value pairs are converted into a mapping that is passed
to Glance that represents the metadata for an image.
Field names of note:
id Optional. If not specified, an image identifier will be
automatically assigned.
name Required. A name for the image.
size Optional. Should be size in bytes of the image if
specified.
is_public Optional. If specified, interpreted as a boolean value
and sets or unsets the image's availability to the public.
The default value is False.
disk_format Optional. Possible values are 'vhd','vmdk','raw', 'qcow2',
and 'ami'. Default value is 'raw'.
container_format Optional. Possible values are 'ovf' and 'ami'.
Default value is 'ovf'.
location Optional. When specified, should be a readable location
in the form of a URI: $STORE://LOCATION. For example, if
the image data is stored in a file on the local
filesystem at /usr/share/images/some.image.tar.gz
you would specify:
location=file:///usr/share/images/some.image.tar.gz
Any other field names are considered to be custom properties so be careful
to spell field names correctly. :)
STREAMING IMAGE DATA
===============================================================================
If the location field is not specified, you can stream an image file on
the command line using standard redirection. For example:
%(prog)s add name="Ubuntu 10.04 LTS 5GB" < /tmp/images/myimage.tar.gz
EXAMPLES
===============================================================================
%(prog)s add name="My Image" disk_format=raw container_format=ovf \\
location=http://images.ubuntu.org/images/lucid-10.04-i686.iso \\
distro="Ubuntu 10.04 LTS"
%(prog)s add name="My Image" distro="Ubuntu 10.04 LTS" < /tmp/myimage.iso"""
c = get_client(options)
try:
fields = get_image_fields_from_args(args)
except RuntimeError, e:
print e
return FAILURE
if 'name' not in fields.keys():
print "Please specify a name for the image using name=VALUE"
return FAILURE
image_meta = {'name': fields.pop('name'),
'is_public': common_utils.bool_from_string(
fields.pop('is_public', False)),
'disk_format': fields.pop('disk_format', 'raw'),
'container_format': fields.pop('container_format', 'ovf')}
# Strip any args that are not supported
unsupported_fields = ['status']
for field in unsupported_fields:
if field in fields.keys():
print 'Found non-settable field %s. Removing.' % field
fields.pop(field)
if 'location' in fields.keys():
image_meta['location'] = fields.pop('location')
# We need either a location or image data/stream to add...
image_location = image_meta.get('location')
image_data = None
if not image_location:
# Grab the image data stream from stdin or redirect,
# otherwise error out
image_data = sys.stdin
else:
# Ensure no image data has been given
if not sys.stdin.isatty():
print "Either supply a location=LOCATION argument or supply image "
print "data via a redirect. You have supplied BOTH image data "
print "AND a location."
return FAILURE
# Add custom attributes, which are all the arguments remaining
image_meta['properties'] = fields
if not options.dry_run:
try:
image_meta = c.add_image(image_meta, image_data)
image_id = image_meta['id']
print "Added new image with ID: %s" % image_id
if options.verbose:
print "Returned the following metadata for the new image:"
for k, v in sorted(image_meta.items()):
print " %(k)30s => %(v)s" % locals()
except exception.ClientConnectionError, e:
host = options.host
port = options.port
print ("Failed to connect to the Glance API server "
"%(host)s:%(port)d. Is the server running?" % locals())
if options.verbose:
pieces = unicode(e).split('\n')
for piece in pieces:
print piece
return FAILURE
except Exception, e:
print "Failed to add image. Got error:"
pieces = unicode(e).split('\n')
for piece in pieces:
print piece
print ("Note: Your image metadata may still be in the registry, "
"but the image's status will likely be 'killed'.")
return FAILURE
else:
print "Dry run. We would have done the following:"
print "Add new image with metadata:"
for k, v in sorted(image_meta.items()):
print " %(k)30s => %(v)s" % locals()
return SUCCESS
def image_update(options, args):
"""
%(prog)s update [options] <ID> <field1=value1 field2=value2 ...>
Updates an image's metadata in Glance. Specify metadata fields as arguments.
Metadata fields that are not specified in the update command will be deleted.
All field/value pairs are converted into a mapping that is passed
to Glance that represents the metadata for an image.
Field names that can be specified:
name A name for the image.
location The location of the image.
is_public If specified, interpreted as a boolean value
and sets or unsets the image's availability to the public.
disk_format Format of the disk image
container_format Format of the container
All other field names are considered to be custom properties so be careful
to spell field names correctly. :)"""
c = get_client(options)
try:
image_id = args.pop(0)
except IndexError:
print "Please specify the ID of the image you wish to update "
print "as the first argument"
return FAILURE
try:
fields = get_image_fields_from_args(args)
except RuntimeError, e:
print e
return FAILURE
image_meta = {}
# Strip any args that are not supported
nonmodifiable_fields = ['created_on', 'deleted_on', 'deleted',
'updated_on', 'size', 'status']
for field in nonmodifiable_fields:
if field in fields.keys():
print 'Found non-modifiable field %s. Removing.' % field
fields.pop(field)
base_image_fields = ['disk_format', 'container_format', 'name',
'location']
for field in base_image_fields:
fvalue = fields.pop(field, None)
if fvalue:
image_meta[field] = fvalue
# Have to handle "boolean" values specially...
if 'is_public' in fields:
image_meta['is_public'] = common_utils.bool_from_string(
fields.pop('is_public'))
# Add custom attributes, which are all the arguments remaining
image_meta['properties'] = fields
if not options.dry_run:
try:
image_meta = c.update_image(image_id, image_meta=image_meta)
print "Updated image %s" % image_id
if options.verbose:
print "Updated image metadata for image %s:" % image_id
print_image_formatted(c, image_meta)
except exception.NotFound:
print "No image with ID %s was found" % image_id
return FAILURE
except Exception, e:
print "Failed to update image. Got error:"
pieces = unicode(e).split('\n')
for piece in pieces:
print piece
return FAILURE
else:
print "Dry run. We would have done the following:"
print "Update existing image with metadata:"
for k, v in sorted(image_meta.items()):
print " %(k)30s => %(v)s" % locals()
return SUCCESS
def image_delete(options, args):
"""
%(prog)s delete [options] <ID>
Deletes an image from Glance"""
try:
image_id = args.pop()
except IndexError:
print "Please specify the ID of the image you wish to delete "
print "as the first argument"
return FAILURE
if not options.force and \
not user_confirm("Delete image %s?" % (image_id,), default=False):
print 'Not deleting image %s' % (image_id,)
return FAILURE
c = get_client(options)
try:
c.delete_image(image_id)
print "Deleted image %s" % image_id
return SUCCESS
except exception.NotFound:
print "No image with ID %s was found" % image_id
return FAILURE
def image_show(options, args):
"""
%(prog)s show [options] <ID>
Shows image metadata for an image in Glance"""
c = get_client(options)
try:
if len(args) > 0:
image_id = args[0]
else:
print "Please specify the image identifier as the "
print "first argument. Example: "
print "$> glance-admin show 12345"
return FAILURE
image = c.get_image_meta(image_id)
print_image_formatted(c, image)
return SUCCESS
except exception.NotFound:
print "No image with ID %s was found" % image_id
return FAILURE
except Exception, e:
print "Failed to show image. Got error:"
pieces = unicode(e).split('\n')
for piece in pieces:
print piece
return FAILURE
def _images_index(client, filters, limit, print_header=False, **kwargs):
"""Driver function for images_index"""
parameters = {
"filters": filters,
"limit": limit,
}
optional_kwargs = ['marker', 'sort_key', 'sort_dir']
for kwarg in optional_kwargs:
if kwarg in kwargs:
parameters[kwarg] = kwargs[kwarg]
images = client.get_images(**parameters)
if not images:
return SUCCESS
pretty_table = utils.PrettyTable()
pretty_table.add_column(16, label="ID")
pretty_table.add_column(30, label="Name")
pretty_table.add_column(20, label="Disk Format")
pretty_table.add_column(20, label="Container Format")
pretty_table.add_column(14, label="Size", just="r")
if print_header:
print pretty_table.make_header()
for image in images:
print pretty_table.make_row(image['id'],
image['name'],
image['disk_format'],
image['container_format'],
image['size'])
if not options.force and len(images) == limit and \
not user_confirm("Fetch next page?", True):
return SUCCESS
parameters['marker'] = images[-1]['id']
return _images_index(client, **parameters)
@catch_error('show index')
def images_index(options, args):
"""
%(prog)s index [options] <field1=value1 field2=value2 ...>
Returns basic information for all public images
a Glance server knows about. Provided fields are
handled as query filters. Supported filters
include 'name', 'disk_format', 'container_format',
'status', 'size_min', and 'size_max.' Any extra
fields are treated as image metadata properties"""
client = get_client(options)
filters = get_image_filters_from_args(args)
limit = options.limit
marker = options.marker
sort_key = options.sort_key
sort_dir = options.sort_dir
return _images_index(client,
filters,
limit,
marker=marker,
sort_key=sort_key,
sort_dir=sort_dir,
print_header=True)
def _images_details(client, filters, limit, print_header=False, **kwargs):
"""Driver function for images_details"""
parameters = {
"filters": filters,
"limit": limit,
}
optional_kwargs = ['marker', 'sort_key', 'sort_dir']
for kwarg in optional_kwargs:
if kwarg in kwargs:
parameters[kwarg] = kwargs[kwarg]
images = client.get_images_detailed(**parameters)
if len(images) == 0:
return SUCCESS
if print_header:
print "=" * 80
for image in images:
print_image_formatted(client, image)
print "=" * 80
if not options.force and len(images) == limit and \
not user_confirm("Fetch next page?", True):
return SUCCESS
parameters["marker"] = images[-1]['id']
return _images_details(client, **parameters)
@catch_error('show details')
def images_details(options, args):
"""
%(prog)s details [options]
Returns detailed information for all public images
a Glance server knows about. Provided fields are
handled as query filters. Supported filters
include 'name', 'disk_format', 'container_format',
'status', 'size_min', and 'size_max.' Any extra
fields are treated as image metadata properties"""
client = get_client(options)
filters = get_image_filters_from_args(args)
limit = options.limit
marker = options.marker
sort_key = options.sort_key
sort_dir = options.sort_dir
return _images_details(client,
filters,
limit,
marker=marker,
sort_key=sort_key,
sort_dir=sort_dir,
print_header=True)
def images_clear(options, args):
"""
%(prog)s clear [options]
Deletes all images from a Glance server"""
if not options.force and \
not user_confirm("Delete all images?", default=False):
print 'Not deleting any images'
return FAILURE
c = get_client(options)
images = c.get_images()
for image in images:
if options.verbose:
print 'Deleting image %s "%s" ...' % (image['id'], image['name']),
try:
c.delete_image(image['id'])
if options.verbose:
print 'done'
except Exception, e:
print 'Failed to delete image %s' % image['id']
print e
return FAILURE
return SUCCESS
@catch_error('show cached images')
def cache_index(options, args):
"""
%(prog)s cache-index [options]
List all images currently cached"""
client = get_client(options)
images = client.get_cached_images()
if not images:
print "No cached images."
return SUCCESS
print "Found %d cached images..." % len(images)
pretty_table = utils.PrettyTable()
pretty_table.add_column(16, label="ID")
pretty_table.add_column(30, label="Name")
pretty_table.add_column(19, label="Last Accessed (UTC)")
# 1 TB takes 13 characters to display: len(str(2**40)) == 13
pretty_table.add_column(14, label="Size", just="r")
pretty_table.add_column(10, label="Hits", just="r")
print pretty_table.make_header()
for image in images:
print pretty_table.make_row(
image['id'],
image['name'],
image['last_accessed'],
image['size'],
image['hits'])
@catch_error('show invalid cache images')
def cache_invalid(options, args):
"""
%(prog)s cache-invalid [options]
List current invalid cache images"""
client = get_client(options)
images = client.get_invalid_cached_images()
if not images:
print "No invalid cached images."
return SUCCESS
print "Found %d invalid cached images..." % len(images)
pretty_table = utils.PrettyTable()
pretty_table.add_column(16, label="ID")
pretty_table.add_column(30, label="Name")
pretty_table.add_column(30, label="Error")
pretty_table.add_column(19, label="Last Modified (UTC)")
# 1 TB takes 13 characters to display: len(str(2**40)) == 13
pretty_table.add_column(14, label="Size", just="r")
pretty_table.add_column(14, label="Expected Size", just="r")
pretty_table.add_column(7, label="% Done", just="r")
print pretty_table.make_header()
for image in images:
print pretty_table.make_row(
image['id'],
image['name'],
image['error'],
image['last_accessed'],
image['size'],
image['expected_size'],
get_percent_done(image))
@catch_error('show incomplete cache images')
def cache_incomplete(options, args):
"""
%(prog)s cache-incomplete [options]
List images currently being fetched"""
client = get_client(options)
images = client.get_incomplete_cached_images()
if not images:
print "No incomplete cached images."
return SUCCESS
print "Found %d incomplete cached images..." % len(images)
pretty_table = utils.PrettyTable()
pretty_table.add_column(16, label="ID")
pretty_table.add_column(30, label="Name")
pretty_table.add_column(19, label="Last Modified (UTC)")
# 1 TB takes 13 characters to display: len(str(2**40)) == 13
pretty_table.add_column(14, label="Size", just="r")
pretty_table.add_column(14, label="Expected Size", just="r")
pretty_table.add_column(7, label="% Done", just="r")
print pretty_table.make_header()
for image in images:
print pretty_table.make_row(
image['id'],
image['name'],
image['last_modified'],
image['size'],
image['expected_size'],
get_percent_done(image))
@catch_error('purge the specified cached image')
def cache_purge(options, args):
"""
%(prog)s cache-purge [options]
Purges an image from the cache"""
try:
image_id = args.pop()
except IndexError:
print "Please specify the ID of the image you wish to purge "
print "from the cache as the first argument"
return FAILURE
if not options.force and \
not user_confirm("Purge cached image %s?" % (image_id,), default=False):
print 'Not purging cached image %s' % (image_id,)
return FAILURE
client = get_client(options)
client.purge_cached_image(image_id)
if options.verbose:
print "done"
@catch_error('clear all cached images')
def cache_clear(options, args):
"""
%(prog)s cache-clear [options]
Removes all images from the cache"""
if not options.force and \
not user_confirm("Clear all cached images?", default=False):
print 'Not purging any cached images.'
return FAILURE
client = get_client(options)
num_purged = client.clear_cached_images()
if options.verbose:
print "Purged %(num_purged)s cached images" % locals()
@catch_error('reap invalid images')
def cache_reap_invalid(options, args):
"""
%(prog)s cache-reap-invalid [options]
Reaps any invalid images that were left for
debugging purposes"""
if not options.force and \
not user_confirm("Reap all invalid cached images?", default=False):
print 'Not reaping any invalid cached images.'
return FAILURE
client = get_client(options)
num_reaped = client.reap_invalid_cached_images()
if options.verbose:
print "Reaped %(num_reaped)s invalid cached images" % locals()
@catch_error('reap stalled images')
def cache_reap_stalled(options, args):
"""
%(prog)s cache-reap-stalled [options]
Reaps any stalled incomplete images"""
if not options.force and \
not user_confirm("Reap all stalled cached images?", default=False):
print 'Not reaping any stalled cached images.'
return FAILURE
client = get_client(options)
num_reaped = client.reap_stalled_cached_images()
if options.verbose:
print "Reaped %(num_reaped)s stalled cached images" % locals()
@catch_error('prefetch the specified cached image')
def cache_prefetch(options, args):
"""
%(prog)s cache-prefetch [options]
Pre-fetch an image or list of images into the cache"""
image_ids = args
if not image_ids:
print "Please specify the ID or a list of image IDs of the images "\
"you wish to "
print "prefetch from the cache as the first argument"
return FAILURE
client = get_client(options)
for image_id in image_ids:
if options.verbose:
print "Prefetching image '%s'" % image_id
try:
client.prefetch_cache_image(image_id)
except exception.NotFound:
print "No image with ID %s was found" % image_id
continue
if options.verbose:
print "done"
@catch_error('show prefetching images')
def cache_prefetching(options, args):
"""
%(prog)s cache-prefetching [options]
List images that are being prefetched"""
client = get_client(options)
images = client.get_prefetching_cache_images()
if not images:
print "No images being prefetched."
return SUCCESS
print "Found %d images being prefetched..." % len(images)
pretty_table = utils.PrettyTable()
pretty_table.add_column(16, label="ID")
pretty_table.add_column(30, label="Name")
pretty_table.add_column(19, label="Last Accessed (UTC)")
pretty_table.add_column(10, label="Status", just="r")
print pretty_table.make_header()
for image in images:
print pretty_table.make_row(
image['id'],
image['name'],
image['last_accessed'],
image['status'])
def get_client(options):
"""
Returns a new client object to a Glance server
specified by the --host and --port options
supplied to the CLI
"""
return glance_client.Client(host=options.host,
port=options.port)
def create_options(parser):
"""
Sets up the CLI and config-file options that may be
parsed and program commands.
:param parser: The option parser
"""
parser.add_option('-v', '--verbose', default=False, action="store_true",
help="Print more verbose output")
parser.add_option('-H', '--host', metavar="ADDRESS", default="0.0.0.0",
help="Address of Glance API host. "
"Default: %default")
parser.add_option('-p', '--port', dest="port", metavar="PORT",
type=int, default=9292,
help="Port the Glance API host listens on. "
"Default: %default")
parser.add_option('--limit', dest="limit", metavar="LIMIT", default=10,
type="int", help="Page size to use while "
"requesting image metadata")
parser.add_option('--marker', dest="marker", metavar="MARKER",
default=None, help="Image index after which to "
"begin pagination")
parser.add_option('--sort_key', dest="sort_key", metavar="KEY",
help="Sort results by this image attribute.")
parser.add_option('--sort_dir', dest="sort_dir", metavar="[desc|asc]",
help="Sort results in this direction.")
parser.add_option('-f', '--force', dest="force", metavar="FORCE",
default=False, action="store_true",
help="Prevent select actions from requesting "
"user confirmation")
parser.add_option('--dry-run', default=False, action="store_true",
help="Don't actually execute the command, just print "
"output showing what WOULD happen.")
def parse_options(parser, cli_args):
"""
Returns the parsed CLI options, command to run and its arguments, merged
with any same-named options found in a configuration file
:param parser: The option parser
"""
if not cli_args:
cli_args.append('-h') # Show options in usage output...
(options, args) = parser.parse_args(cli_args)
# HACK(sirp): Make the parser available to the print_help method
# print_help is a command, so it only accepts (options, args); we could
# one-off have it take (parser, options, args), however, for now, I think
# this little hack will suffice
options.__parser = parser
if not args:
parser.print_usage()
sys.exit(0)
command_name = args.pop(0)
command = lookup_command(parser, command_name)
return (options, command, args)
def print_help(options, args):
"""
Print help specific to a command
"""
if len(args) != 1:
sys.exit("Please specify a command")
parser = options.__parser
command_name = args.pop()
command = lookup_command(parser, command_name)
print command.__doc__ % {'prog': os.path.basename(sys.argv[0])}
def lookup_command(parser, command_name):
BASE_COMMANDS = {'help': print_help}
IMAGE_COMMANDS = {
'add': image_add,
'update': image_update,
'delete': image_delete,
'index': images_index,
'details': images_details,
'show': image_show,
'clear': images_clear}
CACHE_COMMANDS = {
'cache-index': cache_index,
'cache-invalid': cache_invalid,
'cache-incomplete': cache_incomplete,
'cache-prefetching': cache_prefetching,
'cache-prefetch': cache_prefetch,
'cache-purge': cache_purge,
'cache-clear': cache_clear,
'cache-reap-invalid': cache_reap_invalid,
'cache-reap-stalled': cache_reap_stalled}
commands = {}
for command_set in (BASE_COMMANDS, IMAGE_COMMANDS, CACHE_COMMANDS):
commands.update(command_set)
try:
command = commands[command_name]
except KeyError:
parser.print_usage()
sys.exit("Unknown command: %s" % command_name)
return command
def user_confirm(prompt, default=False):
"""
Yes/No question dialog with user.
:param prompt: question/statement to present to user (string)
:param default: boolean value to return if empty string
is received as response to prompt
"""
if default:
prompt_default = "[Y/n]"
else:
prompt_default = "[y/N]"
answer = raw_input("%s %s " % (prompt, prompt_default))
if answer == "":
return default
else:
return answer.lower() in ("yes", "y")
if __name__ == '__main__':
usage = """
%prog <command> [options] [args]
Commands:
help <command> Output help for one of the commands below
add Adds a new image to Glance
update Updates an image's metadata in Glance
delete Deletes an image from Glance
index Return brief information about images in Glance
details Return detailed information about images in
Glance
show Show detailed information about an image in
Glance
clear Removes all images and metadata from Glance
Cache Commands:
cache-index List all images currently cached
cache-invalid List current invalid cache images
cache-incomplete List images currently being fetched
cache-prefetching List images that are being prefetched
cache-prefetch Pre-fetch an image or list of images into the cache
cache-purge Purges an image from the cache
cache-clear Removes all images from the cache
cache-reap-invalid Reaps any invalid images that were left for
debugging purposes
cache-reap-stalled Reaps any stalled incomplete images
"""
oparser = optparse.OptionParser(version='%%prog %s'
% version.version_string(),
usage=usage.strip())
create_options(oparser)
(options, command, args) = parse_options(oparser, sys.argv[1:])
try:
start_time = time.time()
result = command(options, args)
end_time = time.time()
if options.verbose:
print "Completed in %-0.4f sec." % (end_time - start_time)
sys.exit(result)
except (RuntimeError, NotImplementedError), e:
print "ERROR: ", e
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