Nathan
49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
# SPDX-FileCopyrightText: 2026 Blender Authors
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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"""
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Interactive timer-based execution for the MCP server.
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Polls client connections via ``bpy.app.timers`` so that requests are
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handled in Blender's main loop during normal interactive sessions.
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"""
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__all__ = (
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"run",
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)
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from . import mcp_to_blender_server
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def run() -> float | None:
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"""
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Timer callback: poll connections, return next interval.
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Returns ``None`` when the server is no longer running, which causes
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``bpy.app.timers`` to unregister this callback.
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"""
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# While errors *should* never happen: without exception handling here,
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# any error would remove the timer - effectively breaking the add-on.
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try:
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did_work = mcp_to_blender_server.poll()
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except Exception: # pylint: disable=broad-exception-caught
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import traceback
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import sys
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print(
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"Error: unhandled exception in the MCP server timer.\n"
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"This may be a bug in Blender-MCP, as errors should not be raised at this point, continuing:\n"
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"{:s}".format(traceback.format_exc()),
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file=sys.stderr,
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)
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# This is undefined, set to true so we reset the timer.
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did_work = True
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if not mcp_to_blender_server.is_running():
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return None
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if did_work:
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mcp_to_blender_server.timer_idle_reset()
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return mcp_to_blender_server.timer_idle_interval()
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