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match_server.py
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match_server.py
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# Copyright 2022 Google LLC
#
# 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
#
# https:#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.
from locust import HttpUser, task
from locust.exception import RescheduleTask
import json
# Generate games
# A game consists of 100 players. Only 1 winner randomly selected from those players
#
# Matchmaking is random list of players that are not playing. This is sufficient for testing
# purposes, but is too simple for real use-cases. In real scenarios, something like OpenMatch
# should be used for matchmaking. https://github.com/googleforgames/open-match
#
# To achieve this
# A locust user 'GameMatch' will start off by creating a "game"
# Then, pre-selecting a subset of users, and set a current_game attribute for those players.
# Once done, after a period of time, a winner is randomly selected.
# Create and close game matches
class GameMatch(HttpUser):
def on_start(self):
global openGames
# TODO: prepopulate list of exiting open games
openGames = []
@task(2)
def createGame(self):
headers = {"Content-Type": "application/json"}
# Create the game, then store the response in memory of list of open games.
with self.client.post("/games/create", headers=headers, catch_response=True) as response:
try:
gameUUID = response.json()
openGames.append({"gameUUID": gameUUID})
except json.JSONDecodeError:
raise RescheduleTask()
except KeyError:
response.failure("Response did not contain expected key 'gameUUID'")
@task(1)
def closeGame(self):
# No open games are in memory, reschedule task to run again later.
if len(openGames) == 0:
raise RescheduleTask()
headers = {"Content-Type": "application/json"}
# Close the first open game in our list, removing it to avoid contention from concurrent requests
game = openGames[0]
del openGames[0]
data = {"gameUUID": game["gameUUID"]}
self.client.put("/games/close", data=json.dumps(data), headers=headers)
# with self.client.get("/games/open", headers=headers, catch_response=True) as response:
# try:
# data = {"gameUUID": response.json()["gameUUID"]}
# self.client.put("/games/close", data=json.dumps(data), headers=headers)
# except json.JSONDecodeError:
# response.failure("Response could not be decoded as JSON")
# except KeyError:
# response.failure("Response did not contain expected key 'playerUUID'")