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Add tests for Alternator batch operation metrics

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This patch adds unit tests to verify the correctness of the newly
introduced histogram metrics for get and write batch operation
latencies.

The test uses the existing latency test with the added metrics.

Signed-off-by: Amnon Heiman <amnon@scylladb.com>
This commit is contained in:
Amnon Heiman
2024-08-18 12:19:43 +03:00
parent d20a333f51
commit 63fdfb89cd
1 changed files with 5 additions and 1 deletions
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6
test/alternator/test_metrics.py
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@@ -243,12 +243,16 @@ def check_sets_latency(metrics, operation_names):
# Test latency metrics for PutItem, GetItem, DeleteItem, UpdateItem.
# We can't check what exactly the latency is - just that it gets updated.
def test_item_latency(test_table_s, metrics):
with check_sets_latency(metrics, ['DeleteItem', 'GetItem', 'PutItem', 'UpdateItem']):
with check_sets_latency(metrics, ['DeleteItem', 'GetItem', 'PutItem', 'UpdateItem', 'BatchWriteItem', 'BatchGetItem']):
p = random_string()
test_table_s.put_item(Item={'p': p})
test_table_s.get_item(Key={'p': p})
test_table_s.delete_item(Key={'p': p})
test_table_s.update_item(Key={'p': p})
test_table_s.meta.client.batch_write_item(RequestItems = {
test_table_s.name: [{'PutRequest': {'Item': {'p': random_string(), 'a': 'hi'}}}]})
test_table_s.meta.client.batch_get_item(RequestItems = {
test_table_s.name: {'Keys': [{'p': random_string()}], 'ConsistentRead': True}})
# Test latency metrics for GetRecords. Other Streams-related operations -
# ListStreams, DescribeStream, and GetShardIterator, have an operation