wehub-resource-sync
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49 lines
1.6 KiB
Python
49 lines
1.6 KiB
Python
"""Rendezvous tool on the lowlevel `Server`, proving concurrent dispatch without `MCPServer`."""
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from collections import defaultdict
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from typing import Any
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import anyio
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import mcp_types as types
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from mcp.server.context import ServerRequestContext
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from mcp.server.lowlevel import Server
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from stories._hosting import run_server_from_args
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MEET_INPUT_SCHEMA: dict[str, Any] = {
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"type": "object",
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"properties": {
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"tag": {"type": "string"},
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"party": {"type": "array", "items": {"type": "string"}},
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},
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"required": ["tag", "party"],
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}
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def build_server() -> Server[Any]:
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arrivals: dict[str, anyio.Event] = defaultdict(anyio.Event)
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async def list_tools(
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ctx: ServerRequestContext[Any], params: types.PaginatedRequestParams | None
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) -> types.ListToolsResult:
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return types.ListToolsResult(
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tools=[types.Tool(name="meet", description="Rendezvous with peers.", input_schema=MEET_INPUT_SCHEMA)]
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)
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async def call_tool(ctx: ServerRequestContext[Any], params: types.CallToolRequestParams) -> types.CallToolResult:
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assert params.name == "meet"
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assert params.arguments is not None
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tag = params.arguments["tag"]
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assert isinstance(tag, str)
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arrivals[tag].set()
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for peer in params.arguments["party"]:
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await arrivals[peer].wait()
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await ctx.session.report_progress(1.0, total=1.0, message=tag)
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return types.CallToolResult(content=[types.TextContent(text=tag)])
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return Server("parallel-calls-example", on_list_tools=list_tools, on_call_tool=call_tool)
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if __name__ == "__main__":
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run_server_from_args(build_server)
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