func (wo *WriteOperation) CompareAttribute(attributeName string, operator CompareAttribute, value io.Reader) *WriteOperation {
name := C.CString(attributeName)
defer freeString(name)
bufAddr, bufLen := readerToBuf(value)
C.rados_write_op_cmpxattr(wo.opContext, name, C.uint8_t(operator), bufAddr, C.size_t(bufLen))
return wo
}
func (ioctx *IOContext) WriteTaggedFull(oid string, tagName string, tag string, newTag string, data []byte) error {
c_oid := C.CString(oid)
c_tagName := C.CString(tagName)
defer C.free(unsafe.Pointer(c_oid))
defer C.free(unsafe.Pointer(c_tagName))
b_tag := []byte(tag)
b_newTag := []byte(newTag)
op := C.rados_create_write_op()
if tag == "" || tag == "0" {
C.rados_write_op_create(
op,
LIBRADOS_CREATE_EXCLUSIVE,
nil)
} else {
C.rados_write_op_cmpxattr(
op,
c_tagName,
LIBRADOS_CMPXATTR_OP_EQ,
(*C.char)(unsafe.Pointer(&b_tag[0])),
(C.size_t)(len(b_tag)))
}
C.rados_write_op_write_full(
op,
(*C.char)(unsafe.Pointer(&data[0])),
(C.size_t)(len(data)))
C.rados_write_op_setxattr(
op,
c_tagName,
(*C.char)(unsafe.Pointer(&b_newTag[0])),
(C.size_t)(len(b_newTag)))
ret := C.rados_write_op_operate(op, ioctx.ioctx, c_oid, nil, 0)
C.rados_release_write_op(op)
return GetRadosError(ret)
}