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Merge pull request #21 from Kai-Zhang/master
Add python interface
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,225 @@ | ||
| #!/usr/bin/python | ||
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| from ctypes import CDLL, byref, CFUNCTYPE, POINTER, Structure, cast, addressof | ||
| from ctypes import c_void_p, c_char_p, c_long, c_int, c_bool, py_object | ||
| import threading | ||
|
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| SDKError = ('OK', 'ClusterDown', 'NoSuchKey', 'Timeout', 'LockFail', | ||
| 'CleanBinlogFail', 'UserExists', 'PermissionDenied', 'PasswordError', | ||
| 'UnknownUser') | ||
| NodeStatus = ('Leader', 'Candidate', 'Follower', 'Offline') | ||
| ClusterInfo = ('server_id', 'status', 'term', 'last_log_index', 'last_log_term', | ||
| 'commit_index', 'last_applied') | ||
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| class WatchParam: | ||
| def __init__(self, key, value, deleted, context): | ||
| self.key = key | ||
| self.value = value | ||
| self.deleted = deleted | ||
| self.context = context | ||
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| class InsSDK: | ||
| class _ClusterNodeInfo(Structure): | ||
| _fields_ = [('server_id', c_char_p), | ||
| ('status', c_int), | ||
| ('term', c_long), | ||
| ('last_log_index', c_long), | ||
| ('last_log_term', c_long), | ||
| ('commit_index', c_long), | ||
| ('last_applied', c_long)] | ||
| class _WatchParam(Structure): | ||
| _fields_ = [('key', c_char_p), | ||
| ('value', c_char_p), | ||
| ('deleted', c_bool), | ||
| ('context', c_void_p)] | ||
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| WatchCallback = CFUNCTYPE(None, POINTER(_WatchParam), c_long, c_int) | ||
| SessionTimeoutCallback = CFUNCTYPE(None, c_long, c_void_p) | ||
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| def __init__(self, members): | ||
| if isinstance(members, basestring): | ||
| self._sdk = _ins.GetSDK(members) | ||
| else: | ||
| self._sdk = _ins.GetSDKFromArray(members) | ||
| self._local = threading.local() | ||
| self._local.errno = c_int() | ||
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| def __del__(self): | ||
| if _ins != None: | ||
| _ins.DeleteSDK(self._sdk) | ||
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| def error(self): | ||
| return SDKError[self._local.errno] | ||
|
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| def show(self): | ||
| count = c_int() | ||
| cluster_ptr = _ins.SDKShowCluster(self._sdk, byref(count)) | ||
| count = count.value | ||
| ClusterArray = self._ClusterNodeInfo * count | ||
| clusters = ClusterArray.from_address(cluster_ptr) | ||
| cluster_list = [] | ||
| for i in xrange(count): | ||
| cluster_list.append({ | ||
| 'server_id' : str(clusters[i].server_id), | ||
| 'status' : NodeStatus[clusters[i].status], | ||
| 'term' : clusters[i].term, | ||
| 'last_log_index' : clusters[i].last_log_index, | ||
| 'last_log_term' : clusters[i].last_log_term, | ||
| 'commit_index' : clusters[i].commit_index, | ||
| 'last_applied' : clusters[i].last_applied | ||
| }) | ||
| _ins.DeleteClusterArray(cluster_ptr) | ||
| return cluster_list | ||
|
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| def get(self, key): | ||
| return _ins.SDKGet(self._sdk, key, byref(self._local.errno)) | ||
|
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| def put(self, key, value): | ||
| return _ins.SDKPut(self._sdk, key, value, byref(self._local.errno)) | ||
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| def delete(self, key): | ||
| return _ins.SDKDelete(self._sdk, key, byref(self._local.errno)) | ||
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| def scan(self, start_key, end_key): | ||
| self._local.errno = c_int(0) | ||
| return ScanResult(_ins.SDKScan(self._sdk, start_key, end_key)) | ||
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| def watch(self, key, callback, context): | ||
| ctx = py_object(context) | ||
| self._contexts[addressof(ctx)] = ctx | ||
| self._callback[id(callback)] = callback | ||
| def _watch_wrapper(param, cb, error): | ||
| param = param.contents | ||
| context = cast(c_void_p(param.context), POINTER(py_object)).contents | ||
| pm = WatchParam(param.key, param.value, param.deleted, context.value) | ||
| InsSDK._callback[cb](pm, SDKError[error]) | ||
| del InsSDK._callback[cb] | ||
| del InsSDK._contexts[addressof(context)] | ||
| return _ins.SDKWatch(self._sdk, key, self.WatchCallback(_watch_wrapper), \ | ||
| id(callback), byref(ctx), byref(self._local.errno)) | ||
|
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| def lock(self, key): | ||
| return _ins.SDKLock(self._sdk, key, byref(self._local.errno)) | ||
|
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| def trylock(self, key): | ||
| return _ins.SDKTryLock(self._sdk, key, byref(self._local.errno)) | ||
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| def unlock(self, key): | ||
| return _ins.SDKUnLock(self._sdk, key, byref(self._local.errno)) | ||
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| def login(self, username, password): | ||
| return _ins.SDKLogin(self._sdk, username, password, byref(self._local.errno)) | ||
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| def logout(self): | ||
| return _ins.SDKLogout(self._sdk, byref(self._local.errno)) | ||
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| def register(self, username, password): | ||
| return _ins.SDKRegister(self._sdk, username, password, byref(self._local.errno)) | ||
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| def get_session_id(self): | ||
| return _ins.SDKGetSessionID(self._sdk) | ||
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| def get_current_user_id(self): | ||
| return _ins.SDKGetCurrentUserID(self._sdk) | ||
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| def is_logged_in(self): | ||
| return _ins.SDKIsLoggedIn(self._sdk) | ||
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| def register_session_timeout(self, callback, context): | ||
| ctx = py_object(context) | ||
| self._contexts[addressof(context)] = context | ||
| self._callback[id(callback)] = callback | ||
| def _timeout_wrapper(cb, ctx): | ||
| context = cast(ctx, POINTER(py_object)).contents | ||
| InsSDK._callback[cb](context.value) | ||
| del InsSDK._callback[cb] | ||
| del InsSDK._contexts[addressof(context)] | ||
| _ins.SDKRegisterSessionTimeout(self._sdk, self.SessionTimeoutCallback(wrapper), \ | ||
| id(callback), byref(ctx)) | ||
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| _contexts = {} | ||
| _callback = {} | ||
|
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| # <-- InsSDK class definition ends here | ||
|
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| class ScanResult: | ||
| def __init__(self, res_ptr): | ||
| self.scanner = res_ptr | ||
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| def __del__(self): | ||
| if _ins != None: | ||
| _ins.DeleteScanResult(self.scanner) | ||
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| def __iter__(self): | ||
| return self | ||
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| def done(self): | ||
| return _ins.ScanResultDone(self.scanner) | ||
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| def error(self): | ||
| return SDKError[_ins.ScanResultError(self.scanner)] | ||
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| def key(self): | ||
| return _ins.ScanResultKey(self.scanner) | ||
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| def value(self): | ||
| return _ins.ScanResultValue(self.scanner) | ||
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| def pair(self): | ||
| return self.key(), self.value() | ||
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| def next(self): | ||
| if self.done(): | ||
| raise StopIteration() | ||
| else: | ||
| key, value = self.pair() | ||
| _ins.ScanResultNext(self.scanner) | ||
| return key, value | ||
|
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| # <-- ScanResult class definition ends here | ||
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| _ins = CDLL('./libins_py.so') | ||
| def _set_function_sign(): | ||
| _ins.SDKShowCluster.argtypes = [c_void_p, POINTER(c_int)] | ||
| _ins.SDKShowCluster.restype = c_void_p | ||
| _ins.SDKGet.argtypes = [c_void_p, c_char_p, POINTER(c_int)] | ||
| _ins.SDKGet.restype = c_char_p | ||
| _ins.SDKPut.argtypes = [c_void_p, c_char_p, c_char_p, POINTER(c_int)] | ||
| _ins.SDKPut.restype = c_bool | ||
| _ins.SDKDelete.argtypes = [c_void_p, c_char_p, POINTER(c_int)] | ||
| _ins.SDKDelete.restype = c_bool | ||
| _ins.SDKScan.argtypes = [c_void_p, c_char_p, c_char_p] | ||
| _ins.SDKScan.restype = c_void_p | ||
| _ins.SDKWatch.argtypes = [c_void_p, c_char_p, InsSDK.WatchCallback, \ | ||
| c_long, c_void_p, c_void_p] | ||
| _ins.SDKWatch.restype = c_bool | ||
| _ins.SDKLock.argtypes = [c_void_p, c_char_p, POINTER(c_int)] | ||
| _ins.SDKLock.restype = c_bool | ||
| _ins.SDKTryLock.argtypes = [c_void_p, c_char_p, POINTER(c_int)] | ||
| _ins.SDKTryLock.restype = c_bool | ||
| _ins.SDKUnLock.argtypes = [c_void_p, c_char_p, POINTER(c_int)] | ||
| _ins.SDKUnLock.restype = c_bool | ||
| _ins.SDKLogin.argtypes = [c_void_p, c_char_p, c_char_p, POINTER(c_int)] | ||
| _ins.SDKLogin.restype = c_bool | ||
| _ins.SDKLogout.argtypes = [c_void_p, POINTER(c_int)] | ||
| _ins.SDKLogout.restype = c_bool | ||
| _ins.SDKRegister.argtypes = [c_void_p, c_char_p, c_char_p, POINTER(c_int)] | ||
| _ins.SDKRegister.restype = c_bool | ||
| _ins.SDKGetSessionID.argtypes = [c_void_p] | ||
| _ins.SDKGetSessionID.restype = c_char_p | ||
| _ins.SDKGetCurrentUserID.argtypes = [c_void_p] | ||
| _ins.SDKGetCurrentUserID.restype = c_char_p | ||
| _ins.SDKIsLoggedIn.argtypes = [c_void_p] | ||
| _ins.SDKIsLoggedIn.restype = c_bool | ||
| _ins.SDKRegisterSessionTimeout.argtypes = [c_void_p, InsSDK.SessionTimeoutCallback, \ | ||
| c_long, c_void_p] | ||
| _ins.ScanResultDone.argtypes = [c_void_p] | ||
| _ins.ScanResultDone.restype = c_bool | ||
| _ins.ScanResultError.argtypes = [c_void_p] | ||
| _ins.ScanResultError.restype = c_int | ||
| _ins.ScanResultKey.argtypes = [c_void_p] | ||
| _ins.ScanResultKey.restype = c_char_p | ||
| _ins.ScanResultValue.argtypes = [c_void_p] | ||
| _ins.ScanResultValue.restype = c_char_p | ||
| _set_function_sign() | ||
|
|
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