# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
from datetime import datetime
from flask import jsonify, request
from nvflare.ha.overseer.app import app
from nvflare.ha.overseer.utils import (
get_all_sp,
get_primary_sp,
get_system_state,
promote_sp,
set_system_state,
simple_PSP_policy,
update_sp_state,
)
heartbeat_timeout = os.environ.get("NVFL_OVERSEER_HEARTBEAT_TIMEOUT", "10")
try:
heartbeat_timeout = int(heartbeat_timeout)
except Exception:
heartbeat_timeout = 10
[docs]@app.route("/api/v1/heartbeat", methods=["GET", "POST"])
def heartbeat():
if request.method == "POST":
req = request.json
project = req.get("project")
role = req.get("role")
if project is None or role is None:
return jsonify({"Error": "project and role must be provided"})
now = datetime.utcnow()
update_sp_state(project, now, heartbeat_timeout=heartbeat_timeout)
if role == "server":
sp_end_point = req.get("sp_end_point")
if sp_end_point is None:
return jsonify({"Error": "sp_end_point is not provided"})
incoming_sp = dict(sp_end_point=sp_end_point, project=project)
psp = simple_PSP_policy(incoming_sp, now)
elif role in ["client", "admin"]:
psp = get_primary_sp(project)
else:
psp = {}
return jsonify({"primary_sp": psp, "sp_list": get_all_sp(project), "system": get_system_state()})
[docs]@app.route("/api/v1/state", methods=["POST"])
def state():
if app.config.get("DEBUG") is not True and request.headers.get("X-ROLE") != "project_admin":
return jsonify({"Error": "No rights"})
req = request.json
state = req.get("state")
if state not in ["ready", "shutdown"]:
return jsonify({"Error": "Wrong state"})
set_system_state(state)
return jsonify({"Status": get_system_state()})
[docs]@app.route("/api/v1/refresh")
def refresh():
if app.config.get("DEBUG") is not True and request.headers.get("X-ROLE") != "project_admin":
return jsonify({"Error": "No rights"})
return jsonify({"Status": "Error. API disabled."})
if __name__ == "__main__":
app.run()