rpc builder

RPC Builder (Experimental)

The RPC builder constructs a best‑effort TDS RPC request payload for a limited set of types. It is intended for controlled tests, not production encoding.

Supported types

• NVARCHAR: UTF‑16LE data with a default collation blob.
• INT: 32‑bit signed.
• BIT: 0/1.

Files

• Builder: src/tds/rpc_build.py
• Param type map loader: src/tds/rpc_types.py
• Config example: config/rpc_param_types.json

Config and flags

• RPC_REPACK_BUILDER=true: enable rebuilding RPC payload after in‑place autocorrect.
• RPC_PARAM_TYPES_PATH: optional path to a JSON map { "proc": { "Param": "nvarchar|int|bit" } }.
• RPC_AUTOCORRECT_INPLACE=true|false: in‑place rewrite when normalized NVARCHAR fits (pad/truncate guarded by RPC_TRUNCATE_ON_AUTOCORRECT).

Limitations

• Not a full TDS implementation; metadata and collation are simplified.
• Only procedure name + positional named parameters; no TVPs, decimals, dates, or nulls.
• Use for demos and CI smoke tests; for production, integrate a proper TDS library or extend the encoder.

Example map (config/rpc_param_types.json)

{
  "dbo.UpdateCustomer": {
    "CustomerId": "int",
    "Phone": "nvarchar",
    "IsActive": "bit"
  }
}