Tweak spec test because pymongo unpins cursors eagerly after errors.
Tweak spec test for PoolClearedEvent ordering when MongoDB handshake fails (see DRIVERS-1785).
Only skip killCursors for some error codes.
Rely on SDAM error handling to close the connection after a state change error.
Add service_id to various events.
Retain reference to pinned sockets to prevent premptive closure by CPython's cyclic GC.
Command errors during the handshake MUST use SDAM error handling rules.
Mark server unknown after auth failures.
Test network timeout errors pre/post auth.
PoolClearedError MUST NOT mark the server Unknown.
Add "authEnabled" runOn requirement for SDAM integration tests.
Mark server unknown and clear the pool when background connections fail.
Eagerly evict threads from the wait queue when pool is paused. Evicted
threads will raise the following error:
AutoReconnect('localhost:27017: connection pool paused')
Introduce PoolClearedEvent and ConnectionPoolListener.pool_ready.
CMAP spec test changes:
- CMAP unit tests should not use real monitors
- Assert that CMAP threads complete all scheduled operations
Change the driver to maintain a count of in-progress operations to each
server (per client). When selecting a mongos server, the driver now picks
2 suitable servers at random and selects the server with fewer in-progress
operations. Previously, the driver selected a mongos server at random.
The new behavior is intended to route operations away from unhealthy or
slow servers in highly concurrent single client workloads.
PYTHON-2460 Only reset Pool.active_sockets to 0 after a fork()
MongoClient now requires 2 connections and 2 threads to each MongoDB 4.4+ server.
With one connection, the server streams (or pushes) updated heartbeat info.
With the other connection, the client periodically pings the server to
establish an accurate round-trip time (RTT). This change optimizes the
discovery of server state changes such as replica set elections.
Additional changes:
- Mark server Unknown before retrying isMaster check.
- Always reset the pool _after_ marking the server unknown.
- Configure fail point before creating the client in test SpecRunner.
- Unfreeze with replSetFreeze:0 to ensure a speedy elections in test suite.
Fix DeprecationWarning: PY_SSIZE_T_CLEAN will be required for '#' formats
Fix DeprecationWarning: isAlive() is deprecated, use is_alive() instead
Fix SyntaxWarning: invalid escape sequence
Test Python 3.8 on Travis
Skip test for symbol type which pymongo converts to string.
Fix {} comparison with RawBSONDocument in command events.
Add support for $$type assertions.
Nicer message in check_events.
Support errorContains with empty string.
Move custom data files to custom/.
Add retryReads URI option that defaults to True.
Supported read operations will be retried once after transient
network, election, and shutdown errors on MongoDB 3.6+.
Supported operations are:
listCollections, listIndexes, and listDatabases
distinct
count, estimated_document_count, count_documents
aggregate (not including $out)
find (only for the initial find command, getMore commands are not
retried).
ChangeStreams: watch (initial aggregate command).
GridFS read APIs.
Test changes:
Add retryable reads spec test runner.
Disable retryable reads in network error tests.
