Joseph Doherty 6add4b4acc Python client: port bulk read/write SDK methods + CLI subcommands
Mirrors the .NET / Go ports of divergent branch commit f220908. HEAD's
Session class had only the subscribe-style bulks; this commit adds the
value-bulk SDK surface plus matching CLI subcommands and a
bench-read-bulk harness.

SDK (zb_mom_ww_mxgateway/session.py):
- async def write_bulk(server_handle, entries, *, correlation_id="")
  → list[pb.BulkWriteResult]
- async def write2_bulk(server_handle, entries, *, correlation_id="")
  → list[pb.BulkWriteResult]
- async def write_secured_bulk(server_handle, entries, *, correlation_id="")
  → list[pb.BulkWriteResult]
- async def write_secured2_bulk(server_handle, entries, *, correlation_id="")
  → list[pb.BulkWriteResult]
- async def read_bulk(server_handle, tag_addresses, *, timeout_ms=0,
  correlation_id="") → list[pb.BulkReadResult]

All five reuse the existing _ensure_bulk_size validator and route
through the existing invoke() pipeline. read_bulk additionally enforces
timeout_ms >= 0.

CLI (zb_mom_ww_mxgateway_cli/commands.py):
- read-bulk / write-bulk / write2-bulk / write-secured-bulk /
  write-secured2-bulk registered as click @main.command(...). The
  write families share a _build_write_bulk_entries() helper that parses
  --item-handles and --values with a single --type, validates count
  match, converts via to_mx_value, and assembles the correct per-entry
  proto message.
- bench-read-bulk: opens its own session, subscribes to --bulk-size
  TestMachine_NNN.TestChangingInt tags, runs warmup then steady-state
  ReadBulk for --duration-seconds with time.perf_counter() latency
  capture, and emits the shared JSON schema (language, durationMs,
  totalCalls, successfulCalls, failedCalls, totalReadResults,
  cachedReadResults, callsPerSecond, latencyMs:{p50,p95,p99,max,mean})
  so scripts/bench-read-bulk.ps1 collates Python alongside the four
  other clients. _percentile_summary + linear-interpolation
  _percentile helper match the Go / .NET implementations.

to_mx_value is added to the existing values-module import line in
commands.py since the bulk-write commands need it.

Verification: python -m pip install -e . --quiet --no-deps; pytest
42/42 passing. Manual smoke against live gateway on localhost:5120:
open-session → register → subscribe-bulk on two
TestMachine_NNN.TestChangingInt tags (both wasSuccessful=true) →
read-bulk (both wasSuccessful=true / wasCached=true / int32 values
present) → close-session SESSION_STATE_CLOSED.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-24 04:50:10 -04:00
2026-05-24 03:20:40 -04:00
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