wehub-resource-sync
49b9bb6724
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66 lines
2.3 KiB
Python
66 lines
2.3 KiB
Python
"""Resources primitive (lowlevel API): hand-built list/templates/read handlers."""
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from typing import Any
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import mcp_types as types
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from mcp_types.jsonrpc import INVALID_PARAMS
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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 mcp.shared.exceptions import MCPError
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from stories._hosting import run_server_from_args
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def build_server() -> Server[Any]:
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async def list_resources(
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ctx: ServerRequestContext[Any], params: types.PaginatedRequestParams | None
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) -> types.ListResourcesResult:
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return types.ListResourcesResult(
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resources=[
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types.Resource(
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uri="config://app",
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name="app_config",
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description="Static application config.",
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mime_type="application/json",
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)
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]
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)
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async def list_resource_templates(
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ctx: ServerRequestContext[Any], params: types.PaginatedRequestParams | None
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) -> types.ListResourceTemplatesResult:
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return types.ListResourceTemplatesResult(
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resource_templates=[
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types.ResourceTemplate(
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uri_template="greeting://{name}",
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name="greeting",
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description="A greeting for the named subject.",
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mime_type="text/plain",
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)
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]
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)
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async def read_resource(
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ctx: ServerRequestContext[Any], params: types.ReadResourceRequestParams
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) -> types.ReadResourceResult:
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if params.uri == "config://app":
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text, mime = '{"feature": true}', "application/json"
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elif params.uri.startswith("greeting://"):
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text, mime = f"Hello, {params.uri.removeprefix('greeting://')}!", "text/plain"
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else:
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raise MCPError(code=INVALID_PARAMS, message=f"Resource not found: {params.uri}")
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return types.ReadResourceResult(
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contents=[types.TextResourceContents(uri=params.uri, mime_type=mime, text=text)]
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)
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return Server(
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"resources-example",
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on_list_resources=list_resources,
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on_list_resource_templates=list_resource_templates,
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on_read_resource=read_resource,
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)
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if __name__ == "__main__":
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run_server_from_args(build_server)
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