def GETorHEAD(self, req):
"""Handler for HTTP GET/HEAD requests."""
partition, nodes = self.app.account_ring.get_nodes(self.account_name)
nodes = self.app.sort_nodes(nodes)
resp = self.GETorHEAD_base(
req, _('Account'), partition, nodes, req.path_info.rstrip('/'),
len(nodes))
if resp.status_int == HTTP_NOT_FOUND and self.app.account_autocreate:
if len(self.account_name) > MAX_ACCOUNT_NAME_LENGTH:
resp = HTTPBadRequest(request=req)
resp.body = 'Account name length of %d longer than %d' % \
(len(self.account_name), MAX_ACCOUNT_NAME_LENGTH)
return resp
headers = {'X-Timestamp': normalize_timestamp(time.time()),
'X-Trans-Id': self.trans_id,
'Connection': 'close'}
resp = self.make_requests(
Request.blank('/v1/' + self.account_name),
self.app.account_ring, partition, 'PUT',
'/' + self.account_name, [headers] * len(nodes))
if not is_success(resp.status_int):
self.app.logger.warning('Could not autocreate account %r' %
self.account_name)
return resp
resp = self.GETorHEAD_base(
req, _('Account'), partition, nodes, req.path_info.rstrip('/'),
len(nodes))
return resp
def POST(self, req):
"""HTTP POST request handler."""
error_response = check_metadata(req, 'account')
if error_response:
return error_response
account_partition, accounts = \
self.app.account_ring.get_nodes(self.account_name)
headers = {'X-Timestamp': normalize_timestamp(time.time()),
'X-Trans-Id': self.trans_id,
'Connection': 'close'}
self.transfer_headers(req.headers, headers)
if self.app.memcache:
self.app.memcache.delete(
get_account_memcache_key(self.account_name))
resp = self.make_requests(
req, self.app.account_ring, account_partition, 'POST',
req.path_info, [headers] * len(accounts))
if resp.status_int == HTTP_NOT_FOUND and self.app.account_autocreate:
if len(self.account_name) > MAX_ACCOUNT_NAME_LENGTH:
resp = HTTPBadRequest(request=req)
resp.body = 'Account name length of %d longer than %d' % \
(len(self.account_name), MAX_ACCOUNT_NAME_LENGTH)
return resp
resp = self.make_requests(
Request.blank('/v1/' + self.account_name),
self.app.account_ring, account_partition, 'PUT',
'/' + self.account_name, [headers] * len(accounts))
if not is_success(resp.status_int):
self.app.logger.warning('Could not autocreate account %r' %
self.account_name)
return resp
return resp
def container_info(self, account, container, account_autocreate=False):
"""
Get container information and thusly verify container existence.
This will also make a call to account_info to verify that the
account exists.
:param account: account name for the container
:param container: container name to look up
:returns: dict containing at least container partition ('partition'),
container nodes ('containers'), container read
acl ('read_acl'), container write acl ('write_acl'),
and container sync key ('sync_key').
Values are set to None if the container does not exist.
"""
part, nodes = self.app.container_ring.get_nodes(account, container)
path = '/%s/%s' % (account, container)
container_info = {'status': 0, 'read_acl': None,
'write_acl': None, 'sync_key': None,
'count': None, 'bytes': None,
'versions': None, 'partition': None,
'nodes': None}
if self.app.memcache:
cache_key = get_container_memcache_key(account, container)
cache_value = self.app.memcache.get(cache_key)
if isinstance(cache_value, dict):
if 'container_size' in cache_value:
cache_value['count'] = cache_value['container_size']
if is_success(cache_value['status']):
container_info.update(cache_value)
container_info['partition'] = part
container_info['nodes'] = nodes
return container_info
if not self.account_info(account, autocreate=account_autocreate)[1]:
return container_info
attempts_left = len(nodes)
headers = {'x-trans-id': self.trans_id, 'Connection': 'close'}
for node in self.iter_nodes(part, nodes, self.app.container_ring):
try:
start_node_timing = time.time()
with ConnectionTimeout(self.app.conn_timeout):
conn = http_connect(node['ip'], node['port'],
node['device'], part, 'HEAD',
path, headers)
self.app.set_node_timing(node, time.time() - start_node_timing)
with Timeout(self.app.node_timeout):
resp = conn.getresponse()
resp.read()
if is_success(resp.status):
container_info.update(
headers_to_container_info(resp.getheaders()))
break
elif resp.status == HTTP_NOT_FOUND:
container_info['status'] = HTTP_NOT_FOUND
else:
container_info['status'] = -1
if resp.status == HTTP_INSUFFICIENT_STORAGE:
self.error_limit(node)
except (Exception, Timeout):
self.exception_occurred(
node, _('Container'),
_('Trying to get container info for %s') % path)
attempts_left -= 1
if attempts_left <= 0:
break
if self.app.memcache:
if container_info['status'] == HTTP_OK:
self.app.memcache.set(
cache_key, container_info,
time=self.app.recheck_container_existence)
elif container_info['status'] == HTTP_NOT_FOUND:
self.app.memcache.set(
cache_key, container_info,
time=self.app.recheck_container_existence * 0.1)
if container_info['status'] == HTTP_OK:
container_info['partition'] = part
container_info['nodes'] = nodes
return container_info
def is_good_source(self, src):
"""
Indicates whether or not the request made to the backend found
what it was looking for.
"""
return is_success(src.status) or is_redirection(src.status)
def case_info(self, case, autocreate=False):
"""
Get case information, and also verify that the account exists.
:param case: name of the case to get the info for
:returns: tuple of (case id, evidence_count)
or (None, None) if it does not exist
"""
partition, nodes = self.app.account_ring.get_nodes(account)
account_info = {'status': 0,
'container_count': 0,
'total_object_count': None,
'bytes': None,
'meta': {}}
# 0 = no responses, 200 = found, 404 = not found, -1 = mixed responses
if self.app.memcache:
cache_key = get_account_memcache_key(account)
cache_value = self.app.memcache.get(cache_key)
if not isinstance(cache_value, dict):
result_code = cache_value
container_count = 0
else:
result_code = cache_value['status']
try:
container_count = int(cache_value['container_count'])
except ValueError:
container_count = 0
if result_code == HTTP_OK:
return partition, nodes, container_count
elif result_code == HTTP_NOT_FOUND and not autocreate:
return None, None, None
result_code = 0
attempts_left = len(nodes)
path = '/%s' % account
headers = {'x-trans-id': self.trans_id, 'Connection': 'close'}
iternodes = self.iter_nodes(partition, nodes, self.app.account_ring)
while attempts_left > 0:
try:
node = iternodes.next()
except StopIteration:
break
attempts_left -= 1
try:
start_node_timing = time.time()
with ConnectionTimeout(self.app.conn_timeout):
conn = http_connect(node['ip'], node['port'],
node['device'], partition, 'HEAD',
path, headers)
self.app.set_node_timing(node, time.time() - start_node_timing)
with Timeout(self.app.node_timeout):
resp = conn.getresponse()
resp.read()
if is_success(resp.status):
result_code = HTTP_OK
account_info.update(
headers_to_account_info(resp.getheaders()))
break
elif resp.status == HTTP_NOT_FOUND:
if result_code == 0:
result_code = HTTP_NOT_FOUND
elif result_code != HTTP_NOT_FOUND:
result_code = -1
elif resp.status == HTTP_INSUFFICIENT_STORAGE:
self.error_limit(node)
continue
else:
result_code = -1
except (Exception, Timeout):
self.exception_occurred(node, _('Account'),
_('Trying to get account info for %s')
% path)
if result_code == HTTP_NOT_FOUND and autocreate:
if len(account) > MAX_ACCOUNT_NAME_LENGTH:
return None, None, None
headers = {'X-Timestamp': normalize_timestamp(time.time()),
'X-Trans-Id': self.trans_id,
'Connection': 'close'}
resp = self.make_requests(Request.blank('/v1' + path),
self.app.account_ring, partition, 'PUT',
path, [headers] * len(nodes))
if not is_success(resp.status_int):
self.app.logger.warning('Could not autocreate account %r' %
path)
return None, None, None
result_code = HTTP_OK
if self.app.memcache and result_code in (HTTP_OK, HTTP_NOT_FOUND):
if result_code == HTTP_OK:
cache_timeout = self.app.recheck_account_existence
else:
cache_timeout = self.app.recheck_account_existence * 0.1
account_info.update(status=result_code)
self.app.memcache.set(cache_key,
account_info,
time=cache_timeout)
if result_code == HTTP_OK:
try:
container_count = int(account_info['container_count'])
except ValueError:
container_count = 0
return partition, nodes, container_count
return None, None, None