class Cleaner(object):
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
def run(self):
self.cache.clean()
class Cleaner(object):
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
def run(self):
self.cache.clean()
class Cleaner(object):
def __init__(self, conf, **local_conf):
self.conf = conf
self.cache = ImageCache(conf)
def run(self):
self.cache.clean()
class Pruner(object):
def __init__(self, conf, **local_conf):
self.conf = conf
self.cache = ImageCache(conf)
def run(self):
self.cache.prune()
class Pruner(object):
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
def run(self):
self.cache.prune()
class Reaper(object):
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
def run(self):
invalid_grace = int(
self.options.get('image_cache_invalid_entry_grace_period', 3600))
self.cache.reap_invalid(grace=invalid_grace)
self.cache.reap_stalled()
class Reaper(object):
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
def run(self):
invalid_grace = int(self.options.get(
'image_cache_invalid_entry_grace_period',
3600))
self.cache.reap_invalid(grace=invalid_grace)
self.cache.reap_stalled()
class Prefetcher(object):
def __init__(self, options):
self.options = options
glance.store.create_stores(options)
self.cache = ImageCache(options)
registry.configure_registry_client(options)
def fetch_image_into_cache(self, image_id):
auth_tok = self.options.get('admin_token')
ctx = context.RequestContext(is_admin=True,
show_deleted=True,
auth_tok=auth_tok)
try:
image_meta = registry.get_image_metadata(ctx, image_id)
if image_meta['status'] != 'active':
logger.warn(_("Image '%s' is not active. Not caching."),
image_id)
return False
except exception.NotFound:
logger.warn(_("No metadata found for image '%s'"), image_id)
return False
image_data, image_size = get_from_backend(image_meta['location'])
logger.debug(_("Caching image '%s'"), image_id)
self.cache.cache_image_iter(image_id, image_data)
return True
def run(self):
images = self.cache.get_queued_images()
if not images:
logger.debug(_("Nothing to prefetch."))
return True
num_images = len(images)
logger.debug(_("Found %d images to prefetch"), num_images)
pool = eventlet.GreenPool(num_images)
results = pool.imap(self.fetch_image_into_cache, images)
successes = sum([1 for r in results if r is True])
if successes != num_images:
logger.error(
_("Failed to successfully cache all "
"images in queue."))
return False
logger.info(_("Successfully cached all %d images"), num_images)
return True
class Prefetcher(object):
def __init__(self, options):
self.options = options
glance.store.create_stores(options)
self.cache = ImageCache(options)
registry.configure_registry_client(options)
def fetch_image_into_cache(self, image_id):
auth_tok = self.options.get('admin_token')
ctx = context.RequestContext(is_admin=True, show_deleted=True,
auth_tok=auth_tok)
try:
image_meta = registry.get_image_metadata(ctx, image_id)
if image_meta['status'] != 'active':
logger.warn(_("Image '%s' is not active. Not caching."),
image_id)
return False
except exception.NotFound:
logger.warn(_("No metadata found for image '%s'"), image_id)
return False
image_data, image_size = get_from_backend(image_meta['location'])
logger.debug(_("Caching image '%s'"), image_id)
self.cache.cache_image_iter(image_id, image_data)
return True
def run(self):
images = self.cache.get_cache_queue()
if not images:
logger.debug(_("Nothing to prefetch."))
return True
num_images = len(images)
logger.debug(_("Found %d images to prefetch"), num_images)
pool = eventlet.GreenPool(num_images)
results = pool.imap(self.fetch_image_into_cache, images)
successes = sum([1 for r in results if r is True])
if successes != num_images:
logger.error(_("Failed to successfully cache all "
"images in queue."))
return False
logger.info(_("Successfully cached all %d images"), num_images)
return True
class Queuer(object):
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
registry.configure_registry_client(options)
def queue_image(self, image_id):
auth_tok = self.options.get('admin_token')
ctx = context.RequestContext(is_admin=True, show_deleted=True,
auth_tok=auth_tok)
try:
image_meta = registry.get_image_metadata(ctx, image_id)
if image_meta['status'] != 'active':
logger.warn(_("Image '%s' is not active. Not queueing."),
image_id)
return False
except exception.NotFound:
logger.warn(_("No metadata found for image '%s'"), image_id)
return False
logger.debug(_("Queueing image '%s'"), image_id)
self.cache.queue_image(image_id)
return True
def run(self, images):
num_images = len(images)
if num_images == 0:
logger.debug(_("No images to queue!"))
return True
logger.debug(_("Received %d images to queue"), num_images)
pool = eventlet.GreenPool(num_images)
results = pool.imap(self.queue_image, images)
successes = sum([1 for r in results if r is True])
if successes != num_images:
logger.error(_("Failed to successfully queue all "
"images in queue."))
return False
logger.info(_("Successfully queued all %d images"), num_images)
return True
def __init__(self, conf, **local_conf):
self.conf = conf
self.cache = ImageCache(conf)
def __init__(self, options):
self.options = options
glance.store.create_stores(options)
self.cache = ImageCache(options)
class Prefetcher(object):
def __init__(self, options):
self.options = options
glance.store.create_stores(options)
self.cache = ImageCache(options)
def fetch_image_into_cache(self, image_id):
ctx = context.RequestContext(is_admin=True, show_deleted=True)
image_meta = registry.get_image_metadata(
self.options, ctx, image_id)
with self.cache.open(image_meta, "wb") as cache_file:
chunks = get_from_backend(image_meta['location'],
expected_size=image_meta['size'],
options=self.options)
for chunk in chunks:
cache_file.write(chunk)
def run(self):
if self.cache.is_currently_prefetching_any_images():
logger.debug(_("Currently prefetching, going back to sleep..."))
return
try:
image_id = self.cache.pop_prefetch_item()
except IndexError:
logger.debug(_("Nothing to prefetch, going back to sleep..."))
return
if self.cache.hit(image_id):
logger.warn(_("Image %s is already in the cache, deleting "
"prefetch job and going back to sleep..."), image_id)
self.cache.delete_queued_prefetch_image(image_id)
return
# NOTE(sirp): if someone is already downloading an image that is in
# the prefetch queue, then go ahead and delete that item and try to
# prefetch another
if self.cache.is_image_currently_being_written(image_id):
logger.warn(_("Image %s is already being cached, deleting "
"prefetch job and going back to sleep..."), image_id)
self.cache.delete_queued_prefetch_image(image_id)
return
logger.debug(_("Prefetching '%s'"), image_id)
self.cache.do_prefetch(image_id)
try:
self.fetch_image_into_cache(image_id)
finally:
self.cache.delete_prefetching_image(image_id)
def __init__(self):
self.cache = ImageCache()
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
class Pruner(object):
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
@property
def max_size(self):
default = 1 * 1024 * 1024 * 1024 # 1 GB
return config.get_option(
self.options, 'image_cache_max_size_bytes',
type='int', default=default)
@property
def percent_extra_to_free(self):
return config.get_option(
self.options, 'image_cache_percent_extra_to_free',
type='float', default=0.05)
def run(self):
self.prune_cache()
def prune_cache(self):
"""Prune the cache using an LRU strategy"""
# NOTE(sirp): 'Recency' is determined via the filesystem, first using
# atime (access time) and falling back to mtime (modified time).
#
# It has become more common to disable access-time updates by setting
# the `noatime` option for the filesystem. `noatime` is NOT compatible
# with this method.
#
# If `noatime` needs to be supported, we will need to persist access
# times elsewhere (either as a separate file, in the DB, or as
# an xattr).
def get_stats():
stats = []
for path in self.cache.get_all_regular_files(self.cache.path):
file_info = os.stat(path)
stats.append((file_info[stat.ST_ATIME], # access time
file_info[stat.ST_MTIME], # modification time
file_info[stat.ST_SIZE], # size in bytes
path)) # absolute path
return stats
def prune_lru(stats, to_free):
# Sort older access and modified times to the back
stats.sort(reverse=True)
freed = 0
while to_free > 0:
atime, mtime, size, path = stats.pop()
logger.debug("deleting '%(path)s' to free %(size)d B",
locals())
os.unlink(path)
to_free -= size
freed += size
return freed
stats = get_stats()
# Check for overage
cur_size = sum(s[2] for s in stats)
max_size = self.max_size
logger.debug("cur_size=%(cur_size)d B max_size=%(max_size)d B",
locals())
if cur_size <= max_size:
logger.debug("cache has free space, skipping prune...")
return
overage = cur_size - max_size
extra = max_size * self.percent_extra_to_free
to_free = overage + extra
logger.debug("overage=%(overage)d B extra=%(extra)d B"
" total=%(to_free)d B", locals())
freed = prune_lru(stats, to_free)
logger.debug("finished pruning, freed %(freed)d bytes", locals())
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
class Pruner(object):
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
@property
def max_size(self):
default = 1 * 1024 * 1024 * 1024 # 1 GB
return config.get_option(self.options,
'image_cache_max_size_bytes',
type='int',
default=default)
@property
def percent_extra_to_free(self):
return config.get_option(self.options,
'image_cache_percent_extra_to_free',
type='float',
default=0.05)
def run(self):
self.prune_cache()
def prune_cache(self):
"""Prune the cache using an LRU strategy"""
# NOTE(sirp): 'Recency' is determined via the filesystem, first using
# atime (access time) and falling back to mtime (modified time).
#
# It has become more common to disable access-time updates by setting
# the `noatime` option for the filesystem. `noatime` is NOT compatible
# with this method.
#
# If `noatime` needs to be supported, we will need to persist access
# times elsewhere (either as a separate file, in the DB, or as
# an xattr).
def get_stats():
stats = []
for path in self.cache.get_all_regular_files(self.cache.path):
file_info = os.stat(path)
stats.append((
file_info[stat.ST_ATIME], # access time
file_info[stat.ST_MTIME], # modification time
file_info[stat.ST_SIZE], # size in bytes
path)) # absolute path
return stats
def prune_lru(stats, to_free):
# Sort older access and modified times to the back
stats.sort(reverse=True)
freed = 0
while to_free > 0:
atime, mtime, size, path = stats.pop()
logger.debug(_("deleting '%(path)s' to free %(size)d B"),
locals())
os.unlink(path)
to_free -= size
freed += size
return freed
stats = get_stats()
# Check for overage
cur_size = sum(s[2] for s in stats)
max_size = self.max_size
logger.debug(_("cur_size=%(cur_size)d B max_size=%(max_size)d B"),
locals())
if cur_size <= max_size:
logger.debug(_("cache has free space, skipping prune..."))
return
overage = cur_size - max_size
extra = max_size * self.percent_extra_to_free
to_free = overage + extra
logger.debug(
_("overage=%(overage)d B extra=%(extra)d B"
" total=%(to_free)d B"), locals())
freed = prune_lru(stats, to_free)
logger.debug(_("finished pruning, freed %(freed)d bytes"), locals())
def __init__(self, options):
self.options = options
glance.store.create_stores(options)
self.cache = ImageCache(options)
registry.configure_registry_client(options)
def __init__(self, conf, **local_conf):
self.conf = conf
glance.store.create_stores(conf)
self.cache = ImageCache(conf)
registry.configure_registry_client(conf)
registry.configure_registry_admin_creds(conf)
def __init__(self, conf, **local_conf):
self.conf = conf
self.cache = ImageCache(conf)
registry.configure_registry_client(conf)
registry.configure_registry_admin_creds(conf)
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
registry.configure_registry_client(options)
def __init__(self, options):
self.options = options
self.cache = ImageCache(options)
registry.configure_registry_client(options)
def __init__(self, conf, **local_conf):
self.conf = conf
self.cache = ImageCache(conf)
registry.configure_registry_client(conf)
def __init__(self, conf, **local_conf):
self.conf = conf
self.cache = ImageCache(conf)
def __init__(self, options):
self.options = options
glance.store.create_stores(options)
self.cache = ImageCache(options)
registry.configure_registry_client(options)
def __init__(self, conf, **local_conf):
self.conf = conf
glance.store.create_stores(conf)
self.cache = ImageCache(conf)
registry.configure_registry_client(conf)
registry.configure_registry_admin_creds(conf)
