mirror of
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30 lines
1 KiB
Python
30 lines
1 KiB
Python
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"""High-level message and step lifecycle events.
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Wire verbs are fixed by the AI SDK protocol (``start`` / ``finish`` for
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the whole message, ``start-step`` / ``finish-step`` for each step).
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Python helpers always read ``format_<entity>_<verb>`` so pairs are
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visible at the call site.
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"""
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from __future__ import annotations
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from ..emitter import Emitter, attach_emitted_by
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from ..envelope import format_sse
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def format_message_start(message_id: str, *, emitter: Emitter | None = None) -> str:
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payload = {"type": "start", "messageId": message_id}
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return format_sse(attach_emitted_by(payload, emitter))
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def format_message_finish(*, emitter: Emitter | None = None) -> str:
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return format_sse(attach_emitted_by({"type": "finish"}, emitter))
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def format_step_start(*, emitter: Emitter | None = None) -> str:
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return format_sse(attach_emitted_by({"type": "start-step"}, emitter))
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def format_step_finish(*, emitter: Emitter | None = None) -> str:
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return format_sse(attach_emitted_by({"type": "finish-step"}, emitter))
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