Files
grist-mcp-server/src/grist_mcp/proxy.py
2026-01-02 13:57:38 -05:00

67 lines
1.9 KiB
Python

"""HTTP proxy handler for session token access."""
from dataclasses import dataclass
from typing import Any
class ProxyError(Exception):
"""Error during proxy request processing."""
def __init__(self, message: str, code: str):
self.message = message
self.code = code
super().__init__(message)
@dataclass
class ProxyRequest:
"""Parsed proxy request."""
method: str
table: str | None = None
records: list[dict] | None = None
record_ids: list[int] | None = None
filter: dict | None = None
sort: str | None = None
limit: int | None = None
query: str | None = None
table_id: str | None = None
columns: list[dict] | None = None
column_id: str | None = None
column_type: str | None = None
formula: str | None = None
type: str | None = None
METHODS_REQUIRING_TABLE = {
"get_records", "describe_table", "add_records", "update_records",
"delete_records", "add_column", "modify_column", "delete_column",
}
def parse_proxy_request(body: dict[str, Any]) -> ProxyRequest:
"""Parse and validate a proxy request body."""
if "method" not in body:
raise ProxyError("Missing required field: method", "INVALID_REQUEST")
method = body["method"]
if method in METHODS_REQUIRING_TABLE and "table" not in body:
raise ProxyError(f"Missing required field 'table' for method '{method}'", "INVALID_REQUEST")
return ProxyRequest(
method=method,
table=body.get("table"),
records=body.get("records"),
record_ids=body.get("record_ids"),
filter=body.get("filter"),
sort=body.get("sort"),
limit=body.get("limit"),
query=body.get("query"),
table_id=body.get("table_id"),
columns=body.get("columns"),
column_id=body.get("column_id"),
column_type=body.get("column_type"),
formula=body.get("formula"),
type=body.get("type"),
)