IGNITE-22141 C++ 3.0: Implement Partition Awareness for C++ client

[Erixonich]

https://issues.apache.org/jira/browse/IGNITE-22141

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[Copilot]

Pull request overview

Implements initial partition-awareness plumbing for the Ignite 3 C++ client by introducing a partition-assignment protocol message, tracking assignment timestamps, and routing certain key-based requests to a preferred node. Adds C++ integration tests that validate routing behavior via an ASIO proxy that can intercept client/server messages.

Changes:

• Add protocol + client-side state for partition assignment (new op PARTITION_ASSIGNMENT_GET, parsing/writing helpers, assignment timestamp propagation).
• Route C++ TUPLE_GET through a preferred-node selection based on collocated columns hash.
• Add C++ partition-awareness integration test infrastructure (proxy message listener + test job on Java side to expose partition distribution).

Reviewed changes

Copilot reviewed 25 out of 25 changed files in this pull request and generated 12 comments.

Show a summary per file

File	Description
modules/runner/src/testFixtures/java/org/apache/ignite/internal/runner/app/Jobs.java	Adds a compute job to return Java-calculated partition distribution for C++ tests.
modules/runner/src/integrationTest/java/org/apache/ignite/internal/runner/app/PlatformTestNodeRunner.java	Import changes (currently unused).
modules/platforms/cpp/tests/test-common/proxy/message_listener.h	New proxy listener that decodes length-prefixed messages into structured client/server messages.
modules/platforms/cpp/tests/test-common/proxy/asio_proxy.h	Proxy adjustments for raw message type + improved logging and capture.
modules/platforms/cpp/tests/test-common/CMakeLists.txt	Links test-common with asio and msgpack-c.
modules/platforms/cpp/tests/fake_server/proxy/message_listener.h	Removes old minimal message listener (replaced by test-common version).
modules/platforms/cpp/tests/fake_server/connection_test.cpp	Switches to including proxy header from include path.
modules/platforms/cpp/tests/fake_server/CMakeLists.txt	Removes direct asio link from fake_server test target (now via ignite-test-common).
modules/platforms/cpp/tests/client-test/partition_awareness_test.cpp	New integration test validating partition-aware routing for get via proxy interception.
modules/platforms/cpp/tests/client-test/ignite_runner_suite.h	Adds job constant and __partition_id pseudocolumn constant for tests.
modules/platforms/cpp/tests/client-test/CMakeLists.txt	Adds the new partition awareness test to the client-test target.
modules/platforms/cpp/ignite/protocol/partition_assignment.h	New partition assignment data structure.
modules/platforms/cpp/ignite/protocol/messages.h	Exposes partition-assignment read/write APIs and adds node id/name to handshake response.
modules/platforms/cpp/ignite/protocol/messages.cpp	Parses node id/name from handshake and implements partition-assignment request/response helpers.
modules/platforms/cpp/ignite/protocol/client_operation.h	Adds PARTITION_ASSIGNMENT_GET op code.
modules/platforms/cpp/ignite/common/uuid.h	Adds uuid::from_string for tests/utilities.
modules/platforms/cpp/ignite/common/uuid_test.cpp	Adds unit test coverage for uuid::from_string.
modules/platforms/cpp/ignite/client/detail/table/table_impl.h	Adds partition-assignment state/mutex and APIs to load/compute preferred node.
modules/platforms/cpp/ignite/client/detail/table/table_impl.cpp	Loads assignment and routes TUPLE_GET using preferred node name derived from key hash.
modules/platforms/cpp/ignite/client/detail/table/schema.h	Adds collocated_columns to schema for partition-hash calculation.
modules/platforms/cpp/ignite/client/detail/node_connection.h	Adds node id/name fields; introduces send-failure logging behavior (currently via stdout).
modules/platforms/cpp/ignite/client/detail/node_connection.cpp	Propagates PARTITION_ASSIGNMENT_CHANGED flag to cluster connection and stores handshake node id/name.
modules/platforms/cpp/ignite/client/detail/connection_event_handler.h	Adds partition-assignment-changed callback.
modules/platforms/cpp/ignite/client/detail/cluster_connection.h	Adds assignment timestamp + preferred-node routing hooks.
modules/platforms/cpp/ignite/client/detail/cluster_connection.cpp	Updates assignment timestamp on notifications and selects preferred channel by node name.

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Pull request overview

Copilot reviewed 25 out of 25 changed files in this pull request and generated 10 comments.

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Pull request overview

Copilot reviewed 24 out of 24 changed files in this pull request and generated 5 comments.

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