def test_fetch_stream_changesets(self):
event = self.load_event("StreamChangesets")
cmd = event_to_command(event)
assert isinstance(cmd, FetchStreamChangesets)
assert cmd.stream_id == "fe80eaef-90c3-41be-9bc0-3f85458b9a8e"
assert cmd.from_changeset == 1
assert cmd.to_changeset == 5
def test_global_changesets_without_explicit_limit(self):
event = self.load_event("GlobalChangesets")
del event["queryStringParameters"]["limit"]
cmd = event_to_command(event)
assert isinstance(cmd, FetchGlobalChangesets)
assert cmd.checkpoint == 44
assert cmd.limit == None
def test_fetch_stream_events(self):
event = self.load_event("StreamEvents")
cmd = event_to_command(event)
assert isinstance(cmd, FetchStreamEvents)
assert cmd.stream_id == "d2333e6b-65a7-4a10-9886-2dd2fe873bed"
assert cmd.from_event == 1
assert cmd.to_event == 5
def test_fetch_stream_changesets_without_to(self):
event = self.load_event("StreamChangesets")
del event["queryStringParameters"]["to"]
cmd = event_to_command(event)
assert isinstance(cmd, FetchStreamChangesets)
assert cmd.stream_id == "fe80eaef-90c3-41be-9bc0-3f85458b9a8e"
assert cmd.from_changeset == 1
assert cmd.to_changeset == None
def test_commit(self):
event = self.load_event("Commit")
cmd = event_to_command(event)
assert isinstance(cmd, Commit)
assert cmd.stream_id == "7ef3c378-8c97-49fe-97ba-f5afe719ea1c"
assert cmd.expected_last_changeset == 7
assert cmd.events == json.loads(event["body"])["events"]
assert cmd.metadata == json.loads(event["body"])["metadata"]
def test_fetch_stream_events_without_to(self):
event = self.load_event("StreamEvents")
del event["queryStringParameters"]["to"]
cmd = event_to_command(event)
assert isinstance(cmd, FetchStreamEvents)
assert cmd.stream_id == "d2333e6b-65a7-4a10-9886-2dd2fe873bed"
assert cmd.from_event == 1
assert cmd.to_event == None
def test_commit_with_implicit_expected_changeset(self):
event = self.load_event("Commit")
del event["queryStringParameters"]["expected_last_changeset"]
cmd = event_to_command(event)
assert isinstance(cmd, Commit)
assert cmd.stream_id == "7ef3c378-8c97-49fe-97ba-f5afe719ea1c"
assert cmd.expected_last_changeset == 0
assert cmd.events == json.loads(event["body"])["events"]
assert cmd.metadata == json.loads(event["body"])["metadata"]
def test_commit_with_last_event_as_empty_string(self):
event = self.load_event("Commit")
event["queryStringParameters"]["expected_last_event"] = ""
event["queryStringParameters"]["expected_last_changeset"] = ""
cmd = event_to_command(event)
assert isinstance(cmd, Commit)
assert cmd.stream_id == "7ef3c378-8c97-49fe-97ba-f5afe719ea1c"
assert cmd.expected_last_event == None
assert cmd.expected_last_changeset == 0
def request_handler(event, context):
logger.info(f"Processing incoming event: {event}")
pretty_print = True
parsed_event = event_to_command(event, context)
logger.debug(f"Event was parsed to: {parsed_event}")
if isinstance(parsed_event, Response):
return render(parsed_event, pretty_print)
handler = route_request(parsed_event)
response = handler.execute(parsed_event)
return render(response, pretty_print)
def test_assign_global_index(self):
event = self.load_event("AssignGlobalIndex")
cmd = event_to_command(event)
assert isinstance(cmd, AssignGlobalIndexes)
self.assertListEqual(cmd.changesets, [{
"stream_id": "99038933-e620-444d-9033-4128254f0cbd",
"changeset_id": 2
}, {
"stream_id": "206bc1ed-8e67-4a64-a596-8b32c0c20a97",
"changeset_id": 1
}])
def test_global_changesets_with_invalid_limit2(self):
event = self.load_event("GlobalChangesets")
event["queryStringParameters"]["limit"] = "0"
err = event_to_command(event)
assert isinstance(err, Response)
assert err.http_status == 400
self.assertDictEqual(
err.body, {
"error":
"INVALID_LIMIT",
"message":
'"0" is an invalid limit value. Expected an integer value greater than 0.'
})
def test_commit_without_stream_id(self):
event = self.load_event("Commit")
del event["pathParameters"]["stream_id"]
err = event_to_command(event)
assert isinstance(err, Response)
assert err.http_status == 400
self.assertDictEqual(
err.body, {
"error": "MISSING_STREAM_ID",
"message": 'stream_id is a required value'
})
def test_global_changesets_with_invalid_checkpoint2(self):
event = self.load_event("GlobalChangesets")
event["queryStringParameters"]["checkpoint"] = "-2"
err = event_to_command(event)
assert isinstance(err, Response)
assert err.http_status == 400
self.assertDictEqual(
err.body, {
"error":
"INVALID_CHECKPOINT",
"message":
'"-2" is an invalid checkpoint value. Expected a positive integer value.'
})
def test_commit_with_both_expected_event_and_changeset(self):
event = self.load_event("Commit")
event["queryStringParameters"]["expected_last_event"] = "0"
event["queryStringParameters"]["expected_last_changeset"] = "0"
err = event_to_command(event)
assert isinstance(err, Response)
assert err.http_status == 400
self.assertDictEqual(
err.body, {
"stream_id":
"7ef3c378-8c97-49fe-97ba-f5afe719ea1c",
"error":
"BOTH_EXPECTED_CHANGESET_AND_EVENT_ARE_SET",
"message":
'Cannot use both "last_changeset_id" and "last_event_id" for concurrency management. Specify only one value.'
})
def test_commit_with_negative_expected_changeset(self):
event = self.load_event("Commit")
event["queryStringParameters"]["expected_last_changeset"] = -1
err = event_to_command(event)
assert isinstance(err, Response)
assert err.http_status == 400
self.assertDictEqual(
err.body, {
"stream_id":
"7ef3c378-8c97-49fe-97ba-f5afe719ea1c",
"error":
"INVALID_EXPECTED_CHANGESET_ID",
"message":
f'The specified expected changeset id("-1") is invalid. Expected a positive integer.'
})
def test_fetch_stream_events_invalid_from(self):
event = self.load_event("StreamEvents")
event["queryStringParameters"]["from"] = "test"
err = event_to_command(event)
assert isinstance(err, Response)
assert err.http_status == 400
self.assertDictEqual(
err.body, {
"stream_id":
"d2333e6b-65a7-4a10-9886-2dd2fe873bed",
"error":
"INVALID_EVENT_FILTERING_PARAMS",
"message":
'The filtering params(from, to) have to be positive integer values'
})
def test_fetch_stream_changesets_invalid_from(self):
event = self.load_event("StreamChangesets")
event["queryStringParameters"]["from"] = "test"
err = event_to_command(event)
assert isinstance(err, Response)
assert err.http_status == 400
self.assertDictEqual(
err.body, {
"stream_id":
"fe80eaef-90c3-41be-9bc0-3f85458b9a8e",
"error":
"INVALID_CHANGESET_FILTERING_PARAMS",
"message":
'The filtering params(from, to) have to be positive integer values'
})
def test_fetch_stream_events_wrong_order_of_from_and_to(self):
event = self.load_event("StreamEvents")
event["queryStringParameters"]["from"] = "7"
event["queryStringParameters"]["to"] = "1"
err = event_to_command(event)
assert isinstance(err, Response)
assert err.http_status == 400
self.assertDictEqual(
err.body, {
"stream_id":
"d2333e6b-65a7-4a10-9886-2dd2fe873bed",
"error":
"INVALID_EVENT_FILTERING_PARAMS",
"message":
f'The higher boundary cannot be lower than the lower boundary: 7(from) > 1(to)'
})
def test_fetch_stream_changesets_wrong_order_of_from_and_to(self):
event = self.load_event("StreamChangesets")
event["queryStringParameters"]["from"] = "7"
event["queryStringParameters"]["to"] = "1"
err = event_to_command(event)
assert isinstance(err, Response)
assert err.http_status == 400
self.assertDictEqual(
err.body, {
"stream_id":
"fe80eaef-90c3-41be-9bc0-3f85458b9a8e",
"error":
"INVALID_CHANGESET_FILTERING_PARAMS",
"message":
f'The higher boundary cannot be lower than the lower boundary: 7(from) > 1(to)'
})
def test_version(self):
event = self.load_event("Version")
cmd = event_to_command(event)
assert isinstance(cmd, Version)
def test_global_changesets(self):
event = self.load_event("GlobalChangesets")
cmd = event_to_command(event)
assert isinstance(cmd, FetchGlobalChangesets)
assert cmd.checkpoint == 44
assert cmd.limit == 120
def indexer(event, context):
logger.info(f"Processing incoming event: {event}")
parsed_event = event_to_command(event, context)
logger.debug(f"Event was parsed to: {parsed_event}")
handler = route_request(parsed_event)
handler.execute(parsed_event)
