Files
nextcloud-mcp-server/nextcloud_mcp_server/server/tables.py
T
Chris Coutinho 71e77e95bc refactor: integrate token exchange into unified get_client() pattern
Resolves the token exchange implementation gap where get_session_client()
was implemented but never used by tools. Unifies token acquisition into a
single async get_client() method that handles both pass-through and token
exchange modes transparently.

Core Changes:
- Make get_client() async and merge token exchange logic into it
- Remove scopes parameter from token exchange (Nextcloud doesn't support OAuth scopes)
- Update all 8 tool modules to use await get_client(ctx)
- Fix provisioning decorator to skip checks in BasicAuth mode

Token Acquisition Modes:
1. BasicAuth: Returns shared client (no token operations)
2. OAuth pass-through (default): Verifies and passes Flow 1 token to Nextcloud
3. OAuth token exchange (opt-in): Exchanges Flow 1 token for ephemeral token via RFC 8693

Key Architectural Clarifications:
- Progressive Consent (Flow 1/2) = Authorization architecture
- Token Exchange = Token acquisition pattern during tool execution
- Refresh tokens from Flow 2 are NEVER used for tool calls (only background jobs)
- Nextcloud scopes are "soft-scopes" enforced by MCP server, not IdP

Documentation Updates:
- ADR-004: Added comprehensive token acquisition patterns section
- CRITICAL-TOKEN-EXCHANGE-PATTERN.md: Updated to reflect implementation status
- CLAUDE.md: Updated architectural patterns with async get_client()

Testing:
- All 36 unit tests passing
- All 4 smoke tests passing (BasicAuth mode)
- Linting issues fixed (ruff)

Configuration:
ENABLE_TOKEN_EXCHANGE=false (default) - pass-through mode
ENABLE_TOKEN_EXCHANGE=true (opt-in) - token exchange mode

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-03 20:33:56 +01:00

65 lines
2.2 KiB
Python

import logging
from mcp.server.fastmcp import Context, FastMCP
from nextcloud_mcp_server.auth import require_scopes
from nextcloud_mcp_server.context import get_client
logger = logging.getLogger(__name__)
def configure_tables_tools(mcp: FastMCP):
# Tables tools
@mcp.tool()
@require_scopes("tables:read")
async def nc_tables_list_tables(ctx: Context):
"""List all tables available to the user"""
client = await get_client(ctx)
return await client.tables.list_tables()
@mcp.tool()
@require_scopes("tables:read")
async def nc_tables_get_schema(table_id: int, ctx: Context):
"""Get the schema/structure of a specific table including columns and views"""
client = await get_client(ctx)
return await client.tables.get_table_schema(table_id)
@mcp.tool()
@require_scopes("tables:read")
async def nc_tables_read_table(
table_id: int,
ctx: Context,
limit: int | None = None,
offset: int | None = None,
):
"""Read rows from a table with optional pagination"""
client = await get_client(ctx)
return await client.tables.get_table_rows(table_id, limit, offset)
@mcp.tool()
@require_scopes("tables:write")
async def nc_tables_insert_row(table_id: int, data: dict, ctx: Context):
"""Insert a new row into a table.
Data should be a dictionary mapping column IDs to values, e.g. {1: "text", 2: 42}
"""
client = await get_client(ctx)
return await client.tables.create_row(table_id, data)
@mcp.tool()
@require_scopes("tables:write")
async def nc_tables_update_row(row_id: int, data: dict, ctx: Context):
"""Update an existing row in a table.
Data should be a dictionary mapping column IDs to new values, e.g. {1: "new text", 2: 99}
"""
client = await get_client(ctx)
return await client.tables.update_row(row_id, data)
@mcp.tool()
@require_scopes("tables:write")
async def nc_tables_delete_row(row_id: int, ctx: Context):
"""Delete a row from a table"""
client = await get_client(ctx)
return await client.tables.delete_row(row_id)