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# Copyright 2017 Google Inc. 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.
"""Host Info APIs implemented using Google Cloud Endpoints."""
import datetime
import endpoints
import logging
from google.appengine.api import users
from google.appengine.ext import ndb
from webapp.src import vtslab_status as Status
from webapp.src.endpoint import endpoint_base
from webapp.src.proto import model
HOST_INFO_RESOURCE = endpoints.ResourceContainer(model.HostInfoMessage)
# Product type name for null device.
_NULL_DEVICE_PRODUCT_TYPE = "null"
def AddNullDevices(hostname, null_device_count):
"""Adds null devices to DeviceModel data store.
Args:
hostname: string, the host name.
null_device_count: integer, the number of null devices.
"""
device_query = model.DeviceModel.query(
model.DeviceModel.hostname == hostname,
model.DeviceModel.product == _NULL_DEVICE_PRODUCT_TYPE
)
null_devices = device_query.fetch()
existing_null_device_count = len(null_devices)
if existing_null_device_count < null_device_count:
devices_to_put = []
for _ in range(null_device_count - existing_null_device_count):
device = model.DeviceModel()
device.hostname = hostname
device.serial = "n/a"
device.product = _NULL_DEVICE_PRODUCT_TYPE
device.status = Status.DEVICE_STATUS_DICT["ready"]
device.scheduling_status = Status.DEVICE_SCHEDULING_STATUS_DICT[
"free"]
device.timestamp = datetime.datetime.now()
devices_to_put.append(device)
if devices_to_put:
ndb.put_multi(devices_to_put)
@endpoints.api(name='host', version='v1')
class HostInfoApi(endpoint_base.EndpointBase):
"""Endpoint API for host_info."""
@endpoints.method(
HOST_INFO_RESOURCE,
model.DefaultResponse,
path='set',
http_method='POST',
name='set')
def set(self, request):
"""Sets the host info based on the `request`."""
if users.get_current_user():
username = users.get_current_user().email()
else:
username = "anonymous"
devices_to_put = []
for request_device in request.devices:
device_query = model.DeviceModel.query(
model.DeviceModel.serial == request_device.serial
)
existing_device = device_query.fetch()
if existing_device:
device = existing_device[0]
else:
device = model.DeviceModel()
device.serial = request_device.serial
device.scheduling_status = Status.DEVICE_SCHEDULING_STATUS_DICT[
"free"]
if not device.product or request_device.product != "error":
device.product = request_device.product
device.username = username
device.hostname = request.hostname
device.status = request_device.status
device.timestamp = datetime.datetime.now()
devices_to_put.append(device)
if devices_to_put:
ndb.put_multi(devices_to_put)
return model.DefaultResponse(
return_code=model.ReturnCodeMessage.SUCCESS)
@endpoints.method(
endpoint_base.GET_REQUEST_RESOURCE,
model.DeviceResponseMessage,
path="get",
http_method="POST",
name="get")
def get(self, request):
"""Gets the devices from datastore."""
return_list, more = self.Get(request=request,
metaclass=model.DeviceModel,
message=model.DeviceInfoMessage)
return model.DeviceResponseMessage(devices=return_list, has_next=more)
@endpoints.method(
endpoint_base.COUNT_REQUEST_RESOURCE,
model.CountResponseMessage,
path="count",
http_method="POST",
name="count")
def count(self, request):
"""Gets total number of DeviceModel entities stored in datastore."""
filters = self.CreateFilterList(
filter_string=request.filter, metaclass=model.DeviceModel)
count = self.Count(metaclass=model.DeviceModel, filters=filters)
return model.CountResponseMessage(count=count)
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