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Phase 1.1 foundation: Minimal gRPC ext_proc server stub. - ext_proc/ module with __init__ and server.py - ExternalProcessorServicer placeholder (Process() raises NotImplementedError) - requirements.txt with core dependencies (grpcio, protobuf, pydantic, pyyaml, tiktoken) - Dockerfile for containerization (python:3.11-slim) - setup.py for package management - pytest.ini and test structure - .gitignore for Python/IDE artifacts Tests: - test_version: confirms version is 0.1.0 - test_imports: verifies core dependencies importable - test_servicer_placeholder: confirms ExternalProcessorServicer exists All tests pass. Ready for Phase 1.2 (SSE Parser) to start. Depends on: none Blocks: PR-1.2 (SSE Parser), PR-1.4 (Scanner Interface)
Phase 1.2: Core SSE parsing for OpenAI-compatible LLM streaming.
streaming/sse_parser.py:
- split_sse_events(buf: bytes) → (events, remaining)
Splits raw bytes on \n\n delimiter
- parse_sse_event(event: bytes) → Optional[dict]
Parses "data: {...}" JSON, extracts delta.content
- is_done_event(event: bytes) → bool
Detects [DONE] marker
Handles: incomplete events, malformed JSON, OpenAI format, edge cases
Tests (16 tests, 100% pass):
- TestSplitSSEEvents: single, multiple, incomplete, empty
- TestParseSSEEvent: delta content, finish_reason, [DONE], edge cases
- TestIsDoneEvent: detection with/without prefix
- TestIntegration: realistic streaming sequence
Depends on: PR-1.1
Blocks: PR-1.3 (Logical Stream + Holdback)
xiaoqi-7
requested review from
Fei-Guo,
rambohe-ch,
techworldhello and
zhuangqh
as code owners
October 2, 2026 04:33
3 of 9 tasks
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Phase 1.2: Core SSE parsing for OpenAI-compatible LLM streaming.
streaming/sse_parser.py:
Splits raw bytes on \n\n delimiter, returns complete events + remainder
Parses "data: {...}" JSON, extracts delta.content from OpenAI format
Detects [DONE] marker for stream termination
Handles:
Tests (16 tests, 100% pass):
Depends on: PR-1.1 (#227)
Blocks: PR-1.3 (Logical Stream + Holdback)