●方法定义
save_snapshots(self, snapshots_list)
●方法参数说明
参数名称 |
参数说明 |
参数类型 |
默认值 |
snapshots_list |
内存快照列表,[(tagid, snapshot), ...],元素为record.Record类型,对于数字状态集digitalset, Record的属性value应该为数字状态集digitalset的状态ID(state id)。列表个数不超过65535。 Record对象结构体: { sec: 数字类型 msec: 数字类型 tagType: 枚举型 quality: 数字类型 value: 数字类型 } |
record.Record类型的list |
|
●异常
如果调用失败,抛出hyperdb.HDError异常
如果参数错误,抛出HDParaError异常
●方法调用
def SaveSnapshots(self): tagnames = []
hdrecord_list = []
snapshot_list = []
for i in range(10, 20):
tagnames.append('tag_int16_' + str(i))
for tagname in tagnames:
try:
self.myTag = self.myTagMgr.get_tag(tagname)
except Exception as e:
print(e)
hdrecord = record.Record(int(time.strftime('%m%d%H%M%S', time.localtime())), 0)
hdrecord.tagtype = self.myTag.tagtype
hdrecord.quality = 192
hdrecord.value = random.randint(0, 10)
hdrecord_list.append(hdrecord)
try:
ret = self.myTagMgr.get_tagIDs(tagnames)
except Exception as e:
print("get_tagIDs error: ", e.errcode)
for i in range(10):
snapshot_list.append((ret[1][i], hdrecord_list[i]))
try:
self.myTag.save_snapshots(snapshot_list)
except Exception as e:
print("save_snapshots error: ", e.errcode)
else:
print("saving snapshots succeeds")