def create(self, path, lock):
"""Create a direct lock for a resource path.
path:
Normalized path (utf8 encoded string, no trailing '/')
lock:
lock dictionary, without a token entry
Returns:
New unique lock token.: <lock
**Note:** the lock dictionary may be modified on return:
- lock['root'] is ignored and set to the normalized <path>
- lock['timeout'] may be normalized and shorter than requested
- lock['token'] is added
"""
self._lock.acquireWrite()
try:
# We expect only a lock definition, not an existing lock
assert lock.get("token") is None
assert lock.get("expire") is None, "Use timeout instead of expire"
assert path and "/" in path
# Normalize root: /foo/bar
org_path = path
path = normalizeLockRoot(path)
lock["root"] = path
# Normalize timeout from ttl to expire-date
timeout = float(lock.get("timeout"))
if timeout is None:
timeout = LockStorage.LOCK_TIME_OUT_DEFAULT
elif timeout < 0 or timeout > LockStorage.LOCK_TIME_OUT_MAX:
timeout = LockStorage.LOCK_TIME_OUT_MAX
lock["timeout"] = timeout
lock["expire"] = time.time() + timeout
validateLock(lock)
token = generateLockToken()
lock["token"] = token
# Store lock
lock_db = from_dict_to_base(lock)
self._session.add(lock_db)
# Store locked path reference
url2token = Url2Token(
path=path,
token=token
)
self._session.add(url2token)
self._session.commit()
self._flush()
_logger.debug("LockStorageDict.set(%r): %s" % (org_path, lockString(lock)))
# print("LockStorageDict.set(%r): %s" % (org_path, lockString(lock)))
return lock
finally:
self._lock.release()
def create(self, path, lock):
"""Create a direct lock for a resource path.
path:
Normalized path (utf8 encoded string, no trailing '/')
lock:
lock dictionary, without a token entry
Returns:
New unique lock token.: <lock
**Note:** the lock dictionary may be modified on return:
- lock['root'] is ignored and set to the normalized <path>
- lock['timeout'] may be normalized and shorter than requested
- lock['token'] is added
"""
self._lock.acquireWrite()
try:
# We expect only a lock definition, not an existing lock
assert lock.get("token") is None
assert lock.get("expire") is None, "Use timeout instead of expire"
assert path and "/" in path
# Normalize root: /foo/bar
org_path = path
path = normalizeLockRoot(path)
lock["root"] = path
# Normalize timeout from ttl to expire-date
timeout = float(lock.get("timeout"))
if timeout is None:
timeout = LockStorageDict.LOCK_TIME_OUT_DEFAULT
elif timeout < 0 or timeout > LockStorageDict.LOCK_TIME_OUT_MAX:
timeout = LockStorageDict.LOCK_TIME_OUT_MAX
lock["timeout"] = timeout
lock["expire"] = time.time() + timeout
validateLock(lock)
token = generateLockToken()
lock["token"] = token
# Store lock
self._dict[token] = lock
# Store locked path reference
key = "URL2TOKEN:%s" % path
if not key in self._dict:
self._dict[key] = [token]
else:
# Note: Shelve dictionary returns copies, so we must reassign values:
tokList = self._dict[key]
tokList.append(token)
self._dict[key] = tokList
self._flush()
_logger.debug("LockStorageDict.set(%r): %s" %
(org_path, lockString(lock)))
# print("LockStorageDict.set(%r): %s" % (org_path, lockString(lock)))
return lock
finally:
self._lock.release()
def create(self, path, lock):
"""Create a direct lock for a resource path.
path:
Normalized path (utf8 encoded string, no trailing '/')
lock:
lock dictionary, without a token entry
Returns:
New unique lock token.: <lock
**Note:** the lock dictionary may be modified on return:
- lock['root'] is ignored and set to the normalized <path>
- lock['timeout'] may be normalized and shorter than requested
- lock['token'] is added
"""
self._lock.acquireWrite()
try:
# We expect only a lock definition, not an existing lock
assert lock.get("token") is None
assert lock.get("expire") is None, "Use timeout instead of expire"
assert path and "/" in path
# Normalize root: /foo/bar
org_path = path
path = normalizeLockRoot(path)
lock["root"] = path
# Normalize timeout from ttl to expire-date
timeout = float(lock.get("timeout"))
if timeout is None:
timeout = LockStorage.LOCK_TIME_OUT_DEFAULT
elif timeout < 0 or timeout > LockStorage.LOCK_TIME_OUT_MAX:
timeout = LockStorage.LOCK_TIME_OUT_MAX
lock["timeout"] = timeout
lock["expire"] = time.time() + timeout
validateLock(lock)
token = generateLockToken()
lock["token"] = token
# Store lock
lock_db = from_dict_to_base(lock)
self._session.add(lock_db)
# Store locked path reference
url2token = Url2Token(path=path, token=token)
self._session.add(url2token)
self._session.commit()
self._flush()
_logger.debug("LockStorageDict.set(%r): %s" %
(org_path, lockString(lock)))
# print("LockStorageDict.set(%r): %s" % (org_path, lockString(lock)))
return lock
finally:
self._lock.release()
def create(self, path, lock):
"""Create a direct lock for a resource path.
path:
Normalized path (utf8 encoded string, no trailing '/')
lock:
lock dictionary, without a token entry
Returns:
New unique lock token.: <lock
**Note:** the lock dictionary may be modified on return:
- lock['root'] is ignored and set to the normalized <path>
- lock['timeout'] may be normalized and shorter than requested
- lock['token'] is added
"""
self._lock.acquireWrite()
try:
# We expect only a lock definition, not an existing lock
assert lock.get("token") is None
assert lock.get("expire") is None, "Use timeout instead of expire"
assert path and "/" in path
# Normalize root: /foo/bar
org_path = path
path = normalizeLockRoot(path)
lock["root"] = path
# Normalize timeout from ttl to expire-date
timeout = float(lock.get("timeout"))
if timeout is None:
timeout = LockStorageDict.LOCK_TIME_OUT_DEFAULT
elif timeout < 0 or timeout > LockStorageDict.LOCK_TIME_OUT_MAX:
timeout = LockStorageDict.LOCK_TIME_OUT_MAX
lock["timeout"] = timeout
lock["expire"] = time.time() + timeout
validateLock(lock)
token = generateLockToken()
lock["token"] = token
# Store lock
self._dict[token] = lock
# Store locked path reference
key = "URL2TOKEN:%s" % path
if not key in self._dict:
self._dict[key] = [ token ]
else:
# Note: Shelve dictionary returns copies, so we must reassign values:
tokList = self._dict[key]
tokList.append(token)
self._dict[key] = tokList
self._flush()
_logger.debug("LockStorageDict.set(%r): %s" % (org_path, lockString(lock)))
# print("LockStorageDict.set(%r): %s" % (org_path, lockString(lock)))
return lock
finally:
self._lock.release()