qkc/slave 05: add MasterConn protocol layer - #37
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# Conflicts: # qkc/cluster/slave/compat_test.go
# Conflicts: # qkc/cluster/wire/messages_test.go
# Conflicts: # qkc/cluster/conn/base.go # qkc/cluster/conn/base_test.go
…ShardIDs are not set.
# Conflicts: # qkc/cluster/slave/xshard_conn.go # qkc/cluster/slave/xshard_pool.go # qkc/cluster/slave/xshard_test.go
qzhodl
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Sep 7, 2026
qzhodl
reviewed
Sep 7, 2026
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Add MasterConn: the slave-side master↔slave connection layer
Introduces
MasterConn, the slave-side TCP connection to the cluster master, built on the existingBaseConn.This PR establishes protocol compatibility, opcode registration, request dispatch, and handler delegation. Cluster business logic remains out of scope.
Scope
ClusterMetadataframing over TCP.DESTROY_CLUSTER_PEER_CONNECTION_COMMAND.SendAddMinorBlockHeaderSendAddMinorBlockHeaderListCommHandler(communication and topology orchestration);MasterHandler(business RPC handling).Not in Scope
Reviewer Notes
Handler boundary
ADD_ROOT_BLOCKintentionally goes throughCommHandlerrather thanMasterHandlerbecause applying the root block may activate new shards. This keeps the complete operation behind the same orchestration boundary as shard activation.The two shard-activation triggers are
PING(root_tip)andADD_ROOT_BLOCK(root_block).CREATE / DESTROY semantics
CREATE is a normal request/response RPC.
DESTROY is the sole non-RPC opcode.
Its serializer carries a placeholder
ResponseOpCode = 0only because the generic serializer registration requires one. The value is ignored for non-RPC opcodes and never appears on the wire.Full Codex 5.6 review completed.