fcb8d040e8
Instead of lengthy blurbs, switch to single-line, machine-readable standardized (https://spdx.dev) license identifiers. The Linux kernel switched long ago, so there is strong precedent. Three cases are handled: AGPL-only, Apache-only, and dual licensed. For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0), reasoning that our changes are extensive enough to apply our license. The changes we applied mechanically with a script, except to licenses/README.md. Closes #9937
61 lines
2.7 KiB
Python
61 lines
2.7 KiB
Python
# Copyright 2021-present ScyllaDB
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#
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# SPDX-License-Identifier: AGPL-3.0-or-later
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#############################################################################
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# Non-deterministic CQL functions should be evaluated just before query
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# execution.
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# Check that these functions (e.g. `now()`, `uuid()` and `current*()`) work
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# consistently both for un-prepared and prepared statements for LWT queries
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# (e.g. execution order is correct and `bounce_to_shard` messages forward the
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# same value for the execution on another shard).
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#############################################################################
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from time import sleep
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from util import new_test_table
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def lwt_nondeterm_fn_repeated_execute(cql, test_keyspace, pk_type, fn):
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with new_test_table(cql, test_keyspace, f"pk {pk_type} PRIMARY KEY") as table:
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# Test that both unprepared and prepared statements work exactly the
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# same way as described above.
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# The number of inserted rows should be exactly the same as the number
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# of query executions to show that each time non-deterministic function
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# call yields a different value (sleep 1ms to make sure time-dependent
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# functions demonstrate correct behavior).
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# Insert statements should not crash and handle `bounce_to_shard`
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# cross-shard request correctly by forwarding cached results
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# from the initial shard to the target (the test used to crash
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# before #8604 was resolved).
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insert_str = f"INSERT INTO {table} (pk) VALUES ({fn}()) IF NOT EXISTS"
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select_str = f"SELECT * FROM {table}"
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num_iterations = 10
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for i in range(num_iterations):
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cql.execute(insert_str)
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sleep(0.001)
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rows = list(cql.execute(select_str))
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assert len(rows) == num_iterations
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insert_stmt = cql.prepare(insert_str)
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for i in range(num_iterations):
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cql.execute(insert_stmt, [])
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sleep(0.001)
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rows = list(cql.execute(select_str))
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assert len(rows) == num_iterations * 2
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def test_lwt_uuid_fn_pk_insert(cql, test_keyspace):
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lwt_nondeterm_fn_repeated_execute(cql, test_keyspace, "uuid", "uuid")
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def test_lwt_currenttimestamp_fn_pk_insert(cql, test_keyspace):
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lwt_nondeterm_fn_repeated_execute(cql, test_keyspace, "timestamp", "currenttimestamp")
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def test_lwt_currenttime_fn_pk_insert(cql, test_keyspace):
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lwt_nondeterm_fn_repeated_execute(cql, test_keyspace, "time", "currenttime")
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def test_lwt_currenttimeuuid_fn_pk_insert(cql, test_keyspace):
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lwt_nondeterm_fn_repeated_execute(cql, test_keyspace, "timeuuid", "currenttimeuuid")
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def test_lwt_now_fn_pk_insert(cql, test_keyspace):
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lwt_nondeterm_fn_repeated_execute(cql, test_keyspace, "timeuuid", "now")
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