068d788084
The API to put scattered_message into output_stream() is gone in seastar API level 9, transport is the only place in Scylla that still uses it. The change is to put the response as a sequence of temporary_buffer-s. This preserves the zero-copy-ness of the reply, but needs few things to care about. First, the response header frame needs to be put as zero-copy buffer too. Despite output_stream() supports semi-mixed mode, where z.c. buffers can follow the buffered writes, it won't apply here. The socket is flushed() in batched mode, so even if the first reply populates the stream with data and flushes it, the next response may happen to start putting the header frame before delayed flush took place. Second, because socket is flushed in batch-flush poller, the temporary buffers that are put into it must hold the foreigh_ptr with the response object. With scattered message this was implemented with the help of a delter that was attached to the message, now the deleter is shared between all buffers. Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
Scylla in-source tests.
For details on how to run the tests, see docs/dev/testing.md
Shared C++ utils, libraries are in lib/, for Python - pylib/
alternator - Python tests which connect to a single server and use the DynamoDB API unit, boost, raft - unit tests in C++ cqlpy - Python tests which connect to a single server and use CQL topology* - tests that set up clusters and add/remove nodes cql - approval tests that use CQL and pre-recorded output rest_api - tests for Scylla REST API Port 9000 scylla-gdb - tests for scylla-gdb.py helper script nodetool - tests for C++ implementation of nodetool
If you can use an existing folder, consider adding your test to it. New folders should be used for new large categories/subsystems, or when the test environment is significantly different from some existing suite, e.g. you plan to start scylladb with different configuration, and you intend to add many tests and would like them to reuse an existing Scylla cluster (clusters can be reused for tests within the same folder).
To add a new folder, create a new directory, and then
copy & edit its suite.ini.