def test_timespan_too_big(s3_file_from_metadata, random_metadata):
url = 's3://foo/blapp'
s3_file_from_metadata(url, random_metadata)
random_metadata['start'] = 0
random_metadata['end'] = (DatalakeRecord.MAXIMUM_BUCKET_SPAN + 1) * \
DatalakeRecord.TIME_BUCKET_SIZE_IN_MS
with pytest.raises(UnsupportedTimeRange):
DatalakeRecord.list_from_metadata(url, random_metadata)
def maker(**kwargs):
m = random_metadata()
m.update(**kwargs)
key = '/'.join([str(v) for v in kwargs.values()])
url = 's3://datalake-test/' + key
s3_file_from_metadata(url, m)
return DatalakeRecord.list_from_metadata(url, m)
def test_get_time_buckets_misaligned():
# Test for regression on bug when querying over x buckets for a timeframe
# (end - start) of < x buckets (i.e. end of B0 to start of B2)
start = DatalakeRecord.TIME_BUCKET_SIZE_IN_MS * 4 / 5
end = DatalakeRecord.TIME_BUCKET_SIZE_IN_MS * 11 / 5
buckets = DatalakeRecord.get_time_buckets(start, end)
assert buckets == [0, 1, 2]
def test_list_from_metadata(s3_file_from_metadata, random_metadata):
url = 's3://foo/baz'
s3_file_from_metadata(url, random_metadata)
records = DatalakeRecord.list_from_metadata(url, random_metadata)
assert len(records) >= 1
for r in records:
assert r['metadata'] == random_metadata
def test_no_end_exclusion(table_maker, querier, s3_file_from_metadata):
m = random_metadata()
del (m['end'])
url = 's3://datalake-test/' + m['id']
s3_file_from_metadata(url, m)
records = DatalakeRecord.list_from_metadata(url, m)
table_maker(records)
results = querier.query_by_time(m['start'] + 1, m['start'] + 2, m['what'])
assert len(results) == 0
def test_no_end(random_metadata, s3_file_from_metadata):
url = 's3://foo/baz'
del (random_metadata['end'])
expected_metadata = random_metadata.copy()
expected_metadata['end'] = None
s3_file_from_metadata(url, random_metadata)
records = DatalakeRecord.list_from_metadata(url, random_metadata)
assert len(records) >= 1
for r in records:
assert r['metadata'] == expected_metadata
def test_no_end(table_maker, querier, s3_file_from_metadata):
m = generate_random_metadata()
del(m['end'])
url = 's3://datalake-test/' + m['id']
s3_file_from_metadata(url, m)
records = DatalakeRecord.list_from_metadata(url, m)
table_maker(records)
results = querier.query_by_time(m['start'], m['start'] + 1, m['what'])
assert len(results) == 1
assert results[0]['metadata']['end'] is None
def test_record_size_and_create_time(s3_file_maker, random_metadata):
url = 's3://foo/bar'
now = int(time.time() * 1000.0)
# s3 create times have a 1s resolution. So we just tolerate 2x that to
# ensure the test passes reasonably.
max_tolerable_delta = 2000
s3_file_maker('foo', 'bar', 'thissongisjust23byteslong', random_metadata)
records = DatalakeRecord.list_from_url(url)
assert len(records) >= 1
for r in records:
assert r['metadata'] == random_metadata
assert abs(r['create_time'] - now) <= max_tolerable_delta
assert r['size'] == 25
def query_by_time(self, start, end, what, where=None, cursor=None):
results = []
buckets = DatalakeRecord.get_time_buckets(start, end)
if cursor:
current_bucket = cursor['current_time_bucket']
i = buckets.index(current_bucket)
buckets = buckets[i:]
for b in buckets:
cursor = self._query_time_bucket(b, results, start, end, what,
where, cursor)
if cursor and \
cursor.current_time_bucket and \
cursor.current_time_bucket > buckets[-1]:
# this is a corner case. It means that the next query would take us
# into the next bucket, but the next bucket is beyond the time of
# interest. Just clear the cursor in this case.
cursor = None
return QueryResults(results, cursor)
def maker(content, metadata):
path = metadata['id'] + '/data'
s3_file_maker('datalake-test', path, content, metadata)
url = 's3://datalake-test/' + path
records = DatalakeRecord.list_from_metadata(url, metadata)
table_maker(records)
def datalake_records(self):
if self['eventName'] not in self.EVENTS_WITH_RECORDS:
return []
return [dlr for dlr in DatalakeRecord.list_from_url(self.s3_url)]
def test_no_metadata(s3_file_maker):
url = 's3://foo/bar'
s3_file_maker('foo', 'bar', 'the content', None)
with pytest.raises(InvalidDatalakeMetadata):
DatalakeRecord.list_from_url(url)
def test_no_such_bucket(s3_connection):
url = 's3://no/such/file'
with pytest.raises(NoSuchDatalakeFile):
DatalakeRecord.list_from_url(url)
def test_no_such_datalake_file_in_bucket(s3_bucket_maker):
s3_bucket_maker('test-bucket')
url = 's3://test-bucket/such/file'
with pytest.raises(NoSuchDatalakeFile):
DatalakeRecord.list_from_url(url)
def test_from_url_fails_without_boto():
with pytest.raises(InsufficientConfiguration):
DatalakeRecord.list_from_url('s3://foo/bar')
def ingest(self, url):
'''ingest the metadata associated with the given url'''
records = DatalakeRecord.list_from_url(url)
for r in records:
self.storage.store(r)