dongarandClaude Fable 5
18d4fcd701
Retrofit for the conventions merged in #4 (issue #3): - OpLog: JSON-lines emitter with the fixed envelope (ts, agent, event, task_id, cause); task_id set by the orchestrator at unit-of-work start - StateStore owns emission: transition, intent begin/commit/abort, and schema migrations each emit their event right after the durable write commits; callers pass the cause - reconcile_on_boot emits boot.reconcile with action and verdicts, and resolves intents with reconciliation-verdict causes - Failed resolutions emit nothing (a line exists iff the write committed) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
34 lines
1.1 KiB
Python
34 lines
1.1 KiB
Python
"""Structured operational logging (spec A9).
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One JSON object per line to stderr (journald captures it when running as a
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service). Every event carries the fixed envelope: ts, agent, event, task_id,
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cause. Logs are diagnostic, never load-bearing — nothing may read them back
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to derive state.
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"""
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import json
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import sys
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from datetime import UTC, datetime
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from typing import Any, TextIO
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class OpLog:
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def __init__(self, agent: str, stream: TextIO | None = None) -> None:
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self.agent = agent
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# Correlation ID for the enclosing unit of work; the orchestrator sets
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# it when a unit starts and clears it when the unit ends (A9).
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self.task_id: str | None = None
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self._stream = stream if stream is not None else sys.stderr
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def emit(self, event: str, *, cause: str, **fields: Any) -> None:
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record: dict[str, Any] = {
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"ts": datetime.now(UTC).isoformat(),
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"agent": self.agent,
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"event": event,
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"task_id": self.task_id,
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"cause": cause,
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**fields,
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}
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self._stream.write(json.dumps(record) + "\n")
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self._stream.flush()
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