d5b4b02b28
We've updated all the places where token_metadata is mutated, and now we can progress to the next stage of the refactoring - gradually switching the read code paths. The calculate_natural_endpoints function is at the core of all of them. It decides to what nodes the given token should be replicated to for the given token_metadata. It has a lot of usages in various contexts, we can't switch them all in one commit, so instead we allowed the function to behave in both ways. If use_host_id parameter is false, the function uses the provided token_metadata as is and returns endpoint_set as a result. If it's true, it uses get_new() on the provided token_metadata and returns host_id_set as a result. The scope of the whole refactoring is limited to the erm data structure, its interface will be kept inet_address based for now. This means we'll often need to resolve host_ids to inet_address-es as soon as we got a result from calculated_natural_endpoints. A new calculate_natural_ips function is added for convenience. It uses the new token_metadata and immediately resolves returned host_id-s to inet_address-es. The auxiliary declarations natural_ep_type, set_type, vector_type, get_self_id, select_tm are introduced only for the sake of migration, they will be removed later.
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++ cql-pytest - 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.