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pybind/rbd: add config_image_set/get/remove api in rbd.pyx

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Signed-off-by: Zheng Yin <zhengyin@cmss.chinamobile.com>
This commit is contained in:
zhengyin 2019-08-02 03:26:20 -04:00
parent 74d18394bf
commit 6eb39dbb64
1 changed files with 78 additions and 1 deletions
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79
src/pybind/rbd/rbd.pyx
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@ -4459,10 +4459,87 @@ written." % (self.name, ret, length))
"""
List image-level config overrides.
:returns: :class:`ConfigPoolIterator`
:returns: :class:`ConfigImageIterator`
"""
return ConfigImageIterator(self)
def config_set(self, key, value):
"""
Set an image-level configuration override.
:param key: key
:type key: str
:param value: value
:type value: str
"""
conf_key = 'conf_' + key
conf_key = cstr(conf_key, 'key')
value = cstr(value, 'value')
cdef:
char *_key = conf_key
char *_value = value
with nogil:
ret = rbd_metadata_set(self.image, _key, _value)
if ret != 0:
raise make_ex(ret, 'error setting config %s for image %s' %
(key, self.name))
def config_get(self, key):
"""
Get an image-level configuration override.
:param key: key
:type key: str
:returns: str - value
"""
conf_key = 'conf_' + key
conf_key = cstr(conf_key, 'key')
cdef:
char *_key = conf_key
size_t size = 4096
char *value = NULL
int ret
try:
while True:
value = <char *>realloc_chk(value, size)
with nogil:
ret = rbd_metadata_get(self.image, _key, value, &size)
if ret != -errno.ERANGE:
break
if ret == -errno.ENOENT:
raise KeyError('no config %s for image %s' % (key, self.name))
if ret != 0:
raise make_ex(ret, 'error getting config %s for image %s' %
(key, self.name))
return decode_cstr(value)
finally:
free(value)
def config_remove(self, key):
"""
Remove an image-level configuration override.
:param key: key
:type key: str
"""
conf_key = 'conf_' + key
conf_key = cstr(conf_key, 'key')
cdef:
char *_key = conf_key
with nogil:
ret = rbd_metadata_remove(self.image, _key)
if ret == -errno.ENOENT:
raise KeyError('no config %s for image %s' % (key, self.name))
if ret != 0:
raise make_ex(ret, 'error removing config %s for image %s' %
(key, self.name))
def snap_get_namespace_type(self, snap_id):
"""
Get the snapshot namespace type.