mirror of
https://github.com/GNS3/gns3-server.git
synced 2026-09-04 00:55:16 +03:00
db9f645c98
- Node bulk: start_all_nodes, stop_all_nodes, suspend_all_nodes, reload_all_nodes - Node advanced: duplicate_node, isolate_node, unisolate_node, get_node_links - Project: lock_project, unlock_project - Server: get_version, get_statistics
549 lines
24 KiB
Python
549 lines
24 KiB
Python
#
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# Copyright (C) 2026 GNS3 Technologies Inc.
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# Author: Yue Guobin
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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MCP tool handlers for GNS3 node management.
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Handlers receive (params, gns3_ctx) and call GNS3's REST API
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via Gns3Connector (from custom_gns3fy).
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"""
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from typing import Any
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import logging
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log = logging.getLogger(__name__)
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# ── Constants ──────────────────────────────────────────────────────────────
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# Maximum bytes to return from get_node_file (safety net).
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# Larger files are truncated with a truncated=True flag.
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MAX_NODE_FILE_BYTES = 50 * 1024 # 50 KiB
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# ── Helper ─────────────────────────────────────────────────────────────────
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def _get_connector(gns3_ctx: dict[str, Any]):
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from gns3server.agent.gns3_copilot.gns3_client.custom_gns3fy import Gns3Connector
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return Gns3Connector(
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url=gns3_ctx["server_url"],
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jwt_token=gns3_ctx["jwt_token"],
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api_version=3,
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verify=False,
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)
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# ── Tool handlers ──────────────────────────────────────────────────────────
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def get_nodes_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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if not project_id:
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return {"error": "project_id is required"}
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conn = _get_connector(gns3_ctx)
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nodes = conn.http_call("get", f"{conn.base_url}/projects/{project_id}/nodes").json()
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return {"nodes": nodes, "count": len(nodes)}
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def get_node_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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return conn.http_call("get", f"{conn.base_url}/projects/{project_id}/nodes/{node_id}").json()
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def start_node_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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conn.http_call("post", f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/start", json_data={})
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return {"message": f"Node {node_id} started", "node_id": node_id}
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def stop_node_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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conn.http_call("post", f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/stop", json_data={})
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return {"message": f"Node {node_id} stopped", "node_id": node_id}
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def reload_node_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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conn.http_call("post", f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/reload")
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return {"message": f"Node {node_id} reloaded", "node_id": node_id}
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def suspend_node_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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conn.http_call("post", f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/suspend")
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return {"message": f"Node {node_id} suspended", "node_id": node_id}
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def create_node_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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template_id = params.get("template_id")
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if not project_id or not template_id:
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return {"error": "project_id and template_id are required"}
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conn = _get_connector(gns3_ctx)
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data = {
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"x": params.get("x", 0),
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"y": params.get("y", 0),
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"compute_id": params.get("compute_id", "local"),
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}
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url = f"{conn.base_url}/projects/{project_id}/templates/{template_id}"
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return conn.http_call("post", url, json_data=data).json()
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def delete_node_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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conn.http_call("delete", f"{conn.base_url}/projects/{project_id}/nodes/{node_id}")
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return {"message": f"Node {node_id} deleted", "node_id": node_id}
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def update_node_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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# Extract update parameters - handle nested kwargs structure from MCP clients
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if "kwargs" in params and isinstance(params["kwargs"], dict):
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update_data = params["kwargs"]
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else:
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update_data = {k: v for k, v in params.items() if k not in ("project_id", "node_id", "kwargs")}
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url = f"{conn.base_url}/projects/{project_id}/nodes/{node_id}"
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return conn.http_call("put", url, json_data=update_data).json()
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def get_node_console_info_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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node = conn.http_call("get", f"{conn.base_url}/projects/{project_id}/nodes/{node_id}").json()
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console_type = node.get("console_type", "unknown")
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ws_url = f"{gns3_ctx['server_url']}/v3/projects/{project_id}/nodes/{node_id}/console/ws?token={gns3_ctx['jwt_token']}"
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result = {
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"node_id": node_id,
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"node_name": node.get("name"),
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"console_type": console_type,
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"ws_url": ws_url,
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"command": f"websocat {ws_url}",
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}
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if console_type in ("vnc",):
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result["vnc_url"] = f"/v3/projects/{project_id}/nodes/{node_id}/console/vnc?token={gns3_ctx['jwt_token']}"
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return result
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# ── Node file handlers ────────────────────────────────────────────────────
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def list_node_files_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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url = f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/files"
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query = {}
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if params.get("path"):
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query["path"] = params["path"]
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if params.get("recursive"):
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query["recursive"] = "true"
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files = conn.http_call("get", url, params=query if query else None).json()
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return {"files": files, "count": len(files)}
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def get_node_file_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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file_path = params.get("file_path")
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if not project_id or not node_id or not file_path:
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return {"error": "project_id, node_id and file_path are required"}
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offset = params.get("offset", 0)
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limit = params.get("limit", 200)
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conn = _get_connector(gns3_ctx)
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url = f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/files/{file_path}"
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raw = conn.http_call("get", url).text
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total_bytes = len(raw.encode("utf-8"))
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truncated = False
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if total_bytes > MAX_NODE_FILE_BYTES:
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raw = raw[:MAX_NODE_FILE_BYTES]
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truncated = True
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lines = raw.splitlines(keepends=False)
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total_lines = len(lines)
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# Apply offset/limit
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selected = lines[offset: offset + limit] if offset < total_lines else []
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has_more = (offset + limit) < total_lines or truncated
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return {
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"file_path": file_path,
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"content": "\n".join(selected),
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"metadata": {
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"total_lines": total_lines,
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"total_bytes": total_bytes,
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"offset": offset,
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"limit": limit,
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"returned_lines": len(selected),
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"returned_bytes": len("\n".join(selected).encode("utf-8")),
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"truncated": truncated or has_more,
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"has_more": has_more,
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},
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}
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def write_node_file_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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file_path = params.get("file_path")
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content = params.get("content")
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if not project_id or not node_id or not file_path or content is None:
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return {"error": "project_id, node_id, file_path and content are required"}
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conn = _get_connector(gns3_ctx)
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url = f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/files/{file_path}"
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conn.http_call("post", url, data=content, headers={"Content-Type": "text/plain"})
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return {"message": f"File {file_path} written to node {node_id}", "file_path": file_path, "node_id": node_id}
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def delete_node_file_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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file_path = params.get("file_path")
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if not project_id or not node_id or not file_path:
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return {"error": "project_id, node_id and file_path are required"}
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conn = _get_connector(gns3_ctx)
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url = f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/files/{file_path}"
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conn.http_call("delete", url)
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return {"message": f"File {file_path} deleted from node {node_id}", "file_path": file_path, "node_id": node_id}
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# ── Node bulk / advanced handlers ────────────────────────────────────
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def start_all_nodes_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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if not project_id:
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return {"error": "project_id is required"}
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conn = _get_connector(gns3_ctx)
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conn.http_call("post", f"{conn.base_url}/projects/{project_id}/nodes/start")
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return {"message": "All nodes started", "project_id": project_id}
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def stop_all_nodes_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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if not project_id:
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return {"error": "project_id is required"}
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conn = _get_connector(gns3_ctx)
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conn.http_call("post", f"{conn.base_url}/projects/{project_id}/nodes/stop")
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return {"message": "All nodes stopped", "project_id": project_id}
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def suspend_all_nodes_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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if not project_id:
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return {"error": "project_id is required"}
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conn = _get_connector(gns3_ctx)
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conn.http_call("post", f"{conn.base_url}/projects/{project_id}/nodes/suspend")
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return {"message": "All nodes suspended", "project_id": project_id}
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def reload_all_nodes_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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if not project_id:
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return {"error": "project_id is required"}
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conn = _get_connector(gns3_ctx)
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conn.http_call("post", f"{conn.base_url}/projects/{project_id}/nodes/reload")
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return {"message": "All nodes reloaded", "project_id": project_id}
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def duplicate_node_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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data = {k: v for k, v in params.items() if k not in ("project_id", "node_id") and v is not None}
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result = conn.http_call("post", f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/duplicate", json_data=data).json()
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return {"message": f"Node {node_id} duplicated", "node": result}
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def isolate_node_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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conn.http_call("post", f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/isolate")
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return {"message": f"Node {node_id} isolated (all links suspended)", "node_id": node_id}
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def unisolate_node_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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conn.http_call("post", f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/unisolate")
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return {"message": f"Node {node_id} unisolated (links resumed)", "node_id": node_id}
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def get_node_links_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> dict[str, Any]:
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project_id = params.get("project_id")
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node_id = params.get("node_id")
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if not project_id or not node_id:
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return {"error": "project_id and node_id are required"}
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conn = _get_connector(gns3_ctx)
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links = conn.http_call("get", f"{conn.base_url}/projects/{project_id}/nodes/{node_id}/links").json()
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return {"links": links, "count": len(links)}
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# ── Tool definitions ───────────────────────────────────────────────────────
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NODE_TOOLS = [
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{
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"name": "get_nodes",
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"description": "List all nodes in a project",
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"parameters": {
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"type": "object",
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"properties": {
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"project_id": {"type": "string", "description": "Project UUID"},
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},
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"required": ["project_id"],
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},
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"handler": get_nodes_handler,
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},
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{
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"name": "get_node",
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"description": "Get detailed information about a specific node",
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"parameters": {
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"type": "object",
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"properties": {
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"project_id": {"type": "string", "description": "Project UUID"},
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"node_id": {"type": "string", "description": "Node UUID"},
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},
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"required": ["project_id", "node_id"],
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},
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"handler": get_node_handler,
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},
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{
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"name": "start_node",
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"description": "Start a node in a project",
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"parameters": {
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"type": "object",
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"properties": {
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"project_id": {"type": "string", "description": "Project UUID"},
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"node_id": {"type": "string", "description": "Node UUID"},
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},
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"required": ["project_id", "node_id"],
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},
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"handler": start_node_handler,
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},
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{
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"name": "stop_node",
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"description": "Stop a node in a project",
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"parameters": {
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"type": "object",
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"properties": {
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"project_id": {"type": "string", "description": "Project UUID"},
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"node_id": {"type": "string", "description": "Node UUID"},
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},
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"required": ["project_id", "node_id"],
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},
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"handler": stop_node_handler,
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},
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{
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"name": "reload_node",
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"description": "Reload (restart) a node in a project",
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"parameters": {
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"type": "object",
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"properties": {
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"project_id": {"type": "string", "description": "Project UUID"},
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"node_id": {"type": "string", "description": "Node UUID"},
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},
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"required": ["project_id", "node_id"],
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},
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"handler": reload_node_handler,
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},
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{
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"name": "suspend_node",
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"description": "Suspend a node in a project",
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"parameters": {
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"type": "object",
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"properties": {
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"project_id": {"type": "string", "description": "Project UUID"},
|
|
"node_id": {"type": "string", "description": "Node UUID"},
|
|
},
|
|
"required": ["project_id", "node_id"],
|
|
},
|
|
"handler": suspend_node_handler,
|
|
},
|
|
{
|
|
"name": "create_node",
|
|
"description": "Create a new node from a template in a project",
|
|
"parameters": {
|
|
"type": "object",
|
|
"properties": {
|
|
"project_id": {"type": "string", "description": "Project UUID"},
|
|
"template_id": {"type": "string", "description": "Template UUID"},
|
|
"x": {"type": "integer", "description": "X coordinate (optional)"},
|
|
"y": {"type": "integer", "description": "Y coordinate (optional)"},
|
|
"compute_id": {"type": "string", "description": "Compute ID (optional, default: local)"},
|
|
},
|
|
"required": ["project_id", "template_id"],
|
|
},
|
|
"handler": create_node_handler,
|
|
},
|
|
{
|
|
"name": "delete_node",
|
|
"description": "Delete a node from a project",
|
|
"parameters": {
|
|
"type": "object",
|
|
"properties": {
|
|
"project_id": {"type": "string", "description": "Project UUID"},
|
|
"node_id": {"type": "string", "description": "Node UUID"},
|
|
},
|
|
"required": ["project_id", "node_id"],
|
|
},
|
|
"handler": delete_node_handler,
|
|
},
|
|
{
|
|
"name": "update_node",
|
|
"description": "Update a node's properties (name, position, etc.)",
|
|
"parameters": {
|
|
"type": "object",
|
|
"properties": {
|
|
"project_id": {"type": "string", "description": "Project UUID"},
|
|
"node_id": {"type": "string", "description": "Node UUID"},
|
|
"name": {"type": "string", "description": "New node name (optional)"},
|
|
"x": {"type": "integer", "description": "New X position (optional)"},
|
|
"y": {"type": "integer", "description": "New Y position (optional)"},
|
|
"compute_id": {"type": "string", "description": "Compute ID (optional)"},
|
|
},
|
|
"required": ["project_id", "node_id"],
|
|
},
|
|
"handler": update_node_handler,
|
|
},
|
|
{
|
|
"name": "get_node_console_info",
|
|
"description": "Get console WebSocket URL for a node (use websocat to connect)",
|
|
"parameters": {
|
|
"type": "object",
|
|
"properties": {
|
|
"project_id": {"type": "string", "description": "Project UUID"},
|
|
"node_id": {"type": "string", "description": "Node UUID"},
|
|
},
|
|
"required": ["project_id", "node_id"],
|
|
},
|
|
"handler": get_node_console_info_handler,
|
|
},
|
|
{
|
|
"name": "list_node_files",
|
|
"description": "List files in a node directory with metadata (name, size, type, modified time). "
|
|
"Use recursive=true for a full recursive listing. "
|
|
"Check file sizes before reading large files with get_node_file.",
|
|
"parameters": {
|
|
"type": "object",
|
|
"properties": {
|
|
"project_id": {"type": "string", "description": "Project UUID"},
|
|
"node_id": {"type": "string", "description": "Node UUID"},
|
|
"path": {"type": "string", "description": "Subdirectory path within node directory (optional)"},
|
|
"recursive": {"type": "boolean", "description": "Recursively list all files (optional, default: false)"},
|
|
},
|
|
"required": ["project_id", "node_id"],
|
|
},
|
|
"handler": list_node_files_handler,
|
|
},
|
|
{
|
|
"name": "get_node_file",
|
|
"description": "Read a text file from a node directory. Returns file content line-by-line with offset/limit support. "
|
|
"Best practice: start with offset=0, limit=200 to preview, then increase offset to read more. "
|
|
"Large files (>50KB) are auto-truncated; check the metadata.truncated flag. "
|
|
"For binary files, check file type via list_node_files first.",
|
|
"parameters": {
|
|
"type": "object",
|
|
"properties": {
|
|
"project_id": {"type": "string", "description": "Project UUID"},
|
|
"node_id": {"type": "string", "description": "Node UUID"},
|
|
"file_path": {"type": "string", "description": "Path to the file within the node directory"},
|
|
"offset": {"type": "integer", "description": "Line offset to start reading from (optional, default: 0)"},
|
|
"limit": {"type": "integer", "description": "Maximum number of lines to return (optional, default: 200)"},
|
|
},
|
|
"required": ["project_id", "node_id", "file_path"],
|
|
},
|
|
"handler": get_node_file_handler,
|
|
},
|
|
{
|
|
"name": "write_node_file",
|
|
"description": "Write content to a file in a node directory. Creates the file if it doesn't exist. "
|
|
"Overwrites existing content. Useful for updating configuration files on nodes.",
|
|
"parameters": {
|
|
"type": "object",
|
|
"properties": {
|
|
"project_id": {"type": "string", "description": "Project UUID"},
|
|
"node_id": {"type": "string", "description": "Node UUID"},
|
|
"file_path": {"type": "string", "description": "Path to the file within the node directory"},
|
|
"content": {"type": "string", "description": "Content to write to the file"},
|
|
},
|
|
"required": ["project_id", "node_id", "file_path", "content"],
|
|
},
|
|
"handler": write_node_file_handler,
|
|
},
|
|
{
|
|
"name": "delete_node_file",
|
|
"description": "Delete a file from a node directory. Cannot be undone. "
|
|
"Use list_node_files to confirm the file path before deleting.",
|
|
"parameters": {
|
|
"type": "object",
|
|
"properties": {
|
|
"project_id": {"type": "string", "description": "Project UUID"},
|
|
"node_id": {"type": "string", "description": "Node UUID"},
|
|
"file_path": {"type": "string", "description": "Path to the file within the node directory"},
|
|
},
|
|
"required": ["project_id", "node_id", "file_path"],
|
|
},
|
|
"handler": delete_node_file_handler,
|
|
},
|
|
]
|