def __init__(self, data, metadata="", event_id = None, event_type=None, is_json = False):
Ensure.is_bool(is_json, "is_json")
self.isJson = is_json
self.data = data if is_json else str(data)
self.metadata = metadata
if event_id is None:
self.eventId = str(uuid.uuid4())
else:
self.eventId = event_id
if event_type is None:
self.eventType = str(type(data))
else:
self.eventType = event_type
def _start_read_all_events_forward(self, prepare_position, commit_position, count, on_success, on_failed):
Ensure.is_greater_equal_number_then(-1, prepare_position, "prepare_position")
Ensure.is_greater_equal_number_then(-1, commit_position, "commit_position")
Ensure.is_greater_equal_number_then(1, count, "count")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
events = []
batch_counter = 0
params = ReadEventsData
params.prepare_position = prepare_position
params.commit_position = commit_position
params.count = count
params.batch_counter = batch_counter
params.events = events
self._read_batch_all_events_forward(params, on_success, on_failed)
def _start_read_stream_events_backward(self, stream_id, start_position, count, on_success, on_failed):
Ensure.is_not_empty_string(stream_id, "stream_id")
Ensure.is_greater_equal_number_then(-1,start_position, "start_position")
Ensure.is_greater_equal_number_then(1, count, "count")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
stream_id = quote(stream_id)
events = []
batch_counter=0
params = ReadEventsData
params.stream_id = stream_id
params.start_position = start_position
params.count = count
params.batch_counter = batch_counter
params.events = events
self._read_batch_events_backward(params, on_success, on_failed)
def _start_read_event(self,stream_id, event_number, on_success, on_failed):
Ensure.is_not_empty_string(stream_id, "stream_id")
Ensure.is_greater_equal_number_then(0,event_number, "event_number")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
stream_id = quote(stream_id)
url = "{0}/streams/{1}/event/{2}".format(self._base_url, stream_id, str(event_number))
self._tornado_http_sender.send_async(url, "GET", self._headers, None,
lambda x: self._read_event_callback(x, on_success, on_failed))
def _start_read_all_events_backward(self, prepare_position,
commit_position, count, on_success,
on_failed):
Ensure.is_number(prepare_position, "prepare_position")
Ensure.is_number(commit_position, "commit_position")
Ensure.is_greater_equal_number_then(1, count, "count")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
events = []
batch_counter = 0
params = ReadEventsData
params.prepare_position = prepare_position
params.commit_position = commit_position
params.count = count
params.batch_counter = batch_counter
params.events = events
self._read_batch_all_events_backward(params, on_success, on_failed)
def __init__(self,
data,
metadata="",
event_id=None,
event_type=None,
is_json=False):
Ensure.is_bool(is_json, "is_json")
self.isJson = is_json
self.data = data if is_json else str(data)
self.metadata = metadata
if event_id is None:
self.eventId = str(uuid.uuid4())
else:
self.eventId = event_id
if event_type is None:
self.eventType = str(type(data))
else:
self.eventType = event_type
def _start_delete_stream(self,stream_id, expected_version, on_success, on_failed, ):
Ensure.is_not_empty_string(stream_id, "stream_id")
Ensure.is_number(expected_version, "expected_version")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
stream_id = quote(stream_id)
url = "{0}/streams/{1}".format(self._base_url, stream_id)
body = to_json(DeleteStreamRequestBody(expected_version))
self._tornado_http_sender.send_async(url, "DELETE", self._headers, body,
lambda x: self._delete_stream_callback(x, on_success, on_failed))
def _start_read_stream_events_backward(self, stream_id, start_position,
count, on_success, on_failed):
Ensure.is_not_empty_string(stream_id, "stream_id")
Ensure.is_greater_equal_number_then(-1, start_position,
"start_position")
Ensure.is_greater_equal_number_then(1, count, "count")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
stream_id = quote(stream_id)
events = []
batch_counter = 0
params = ReadEventsData
params.stream_id = stream_id
params.start_position = start_position
params.count = count
params.batch_counter = batch_counter
params.events = events
self._read_batch_events_backward(params, on_success, on_failed)
def _start_append_to_stream(self,stream_id, events, expected_version, on_success, on_failed):
Ensure.is_not_empty_string(stream_id, "stream_id")
Ensure.is_number(expected_version, "expected_version")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
stream_id = quote(stream_id)
if type(events) is not list:
events = [events]
body = to_json(AppendToStreamRequestBody(expected_version, events))
url = "{0}/streams/{1}".format(self._base_url,stream_id)
self._tornado_http_sender.send_async(url,"POST", self._headers, body,
lambda x: self._append_to_stream_callback(x, on_success, on_failed))
def _start_read_event(self, stream_id, event_number, on_success,
on_failed):
Ensure.is_not_empty_string(stream_id, "stream_id")
Ensure.is_greater_equal_number_then(0, event_number, "event_number")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
stream_id = quote(stream_id)
url = "{0}/streams/{1}/event/{2}".format(self._base_url, stream_id,
str(event_number))
self._tornado_http_sender.send_async(
url, "GET", self._headers, None,
lambda x: self._read_event_callback(x, on_success, on_failed))
def _start_create_stream(self, stream_id, metadata, on_success, on_failed):
Ensure.is_not_empty_string(stream_id, "stream_id")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
body = to_json(CreateStreamRequestBody(stream_id, metadata))
url = "{0}/streams".format(self._base_url)
self._tornado_http_sender.send_async(url, "POST", self._headers, body, lambda x: self._create_stream_callback(x, on_success, on_failed))
def _start_append_to_stream(self, stream_id, events, expected_version,
on_success, on_failed):
Ensure.is_not_empty_string(stream_id, "stream_id")
Ensure.is_number(expected_version, "expected_version")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
stream_id = quote(stream_id)
if type(events) is not list:
events = [events]
body = to_json(AppendToStreamRequestBody(expected_version, events))
url = "{0}/streams/{1}".format(self._base_url, stream_id)
self._tornado_http_sender.send_async(
url, "POST", self._headers,
body, lambda x: self._append_to_stream_callback(
x, on_success, on_failed))
def _start_create_stream(self, stream_id, metadata, on_success, on_failed):
Ensure.is_not_empty_string(stream_id, "stream_id")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
body = to_json(CreateStreamRequestBody(stream_id, metadata))
url = "{0}/streams".format(self._base_url)
self._tornado_http_sender.send_async(
url, "POST", self._headers, body,
lambda x: self._create_stream_callback(x, on_success, on_failed))
def _start_delete_stream(
self,
stream_id,
expected_version,
on_success,
on_failed,
):
Ensure.is_not_empty_string(stream_id, "stream_id")
Ensure.is_number(expected_version, "expected_version")
Ensure.is_function(on_success, "on_success")
Ensure.is_function(on_failed, "on_failed")
stream_id = quote(stream_id)
url = "{0}/streams/{1}".format(self._base_url, stream_id)
body = to_json(DeleteStreamRequestBody(expected_version))
self._tornado_http_sender.send_async(
url, "DELETE", self._headers, body,
lambda x: self._delete_stream_callback(x, on_success, on_failed))
