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pragma_server.py
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pragma_server.py
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import random
import uuid
import ujson as json
import common
import time
import base64
import gevent
import gevent.event
from common import RUNNING
from locust import User, task, between, events, tag
from pragma import Pragma
import pragma_operator
from websocket_client.pragma_websocket_user import PragmaWSUser
class PragmaGenericServer():
def __init__(self):
self.server_id = str(uuid.uuid4())
self.headers = {
# "Content-Type": "application/json",
"Accept": "application/json"
}
def parse_script_line(self, line, variables):
if not "{{" in line or not "}}" in line:
return line
while "{{" in line:
variable_name = line.split("{{", 1)[1].split("}}", 1)[0]
variable_value = variables.get(variable_name)
line = line.replace("{{" + variable_name + "}}", variable_value)
return line
def get_return_value(self, response, return_request):
_response = response
for path in return_request:
_response = _response.get(path)
return _response
class PragmaWSServer(PragmaWSUser, PragmaGenericServer):
wait_time = between(1,5)
def __init__(self, environment):
self.connected = False
self.last_received = 0
self.provided_schema = environment.host.split("://")[0]
self.provided_port = environment.host.split(":")[-1]
self.login_schema = environment.parsed_options.login_schema
self.http_port = environment.parsed_options.http_port
self.show_responses = environment.parsed_options.show_responses
# We ask the user to provide min and max duration in seconds, which we translate to how many 10s KeepAlive loops we perform
self.min_keepalive_repeats = round(environment.parsed_options.match_duration_min / 10)
self.max_keepalive_repeats = round(environment.parsed_options.match_duration_max / 10)
self.rpc = "v1/rpc"
self.players = []
super().__init__(environment)
self.http_headers = {
"Content-Type": "application/json",
"Accept": "application/json"
}
self.ws_headers = {
"Connection": "Upgrade",
"Upgrade": "websocket",
"Sec-WebSocket-Version": "13",
"Sec-WebSocket-Extensions": "permessage-deflate; client_max_window_bits",
"Accept": "application/json"
}
self.host = environment.host
self.notifications = {}
self.game_instance_id = None
self.notify_result = gevent.event.Event()
def on_start(self):
self.partner_game_token = pragma_operator.OPERATOR.partner_game_token
def process_message_by_type(self, type, message_data):
match type:
case "GameInstanceRpc.GetGameStartDataV1Response":
#Fetch the player list for the game instance
player_list = message_data['response']['payload']['gameStart']['players']
for player in player_list:
self.players.append(player['playerId'])
@tag('load_test')
@task
def load_test_script(self):
script = None
with open('websocket_server_script.json', 'r') as file:
script = json.load(file)
try:
#Currently repeats its logic to stand ready as a server after each match
while(True):
self.call(script=script)
finally:
self.stop()
if self in RUNNING:
del RUNNING[self]
def call(self, **kwargs):
script = kwargs.get('script')
script_vars = {"serverId": self.server_id, "partnerGameToken": self.partner_game_token}
self.my_value = None
for call in script.get('script'):
call_name = call.get('name')
# If we're not connected yet then connect now, we'll keep using the same connection for all the calls
if not self.connected:
headers = self.listize_element(call.get('headers') | self.ws_headers, script_vars)
ws_url = f"{self.host}/{call.get('uri')}"
self.connect(ws_url, headers)
self.connected = True
start_time = time.time()
timeout = 10
repeat = 0
if call.get('acceptable-timeout'):
timeout = int(call.get('acceptable-timeout'))
if call_name == "keep game alive":
if (self.min_keepalive_repeats < self.max_keepalive_repeats):
repeat = random.randrange(self.min_keepalive_repeats, self.max_keepalive_repeats)
else:
repeat = self.min_keepalive_repeats
if call_name == "exit":
break
if call_name == "connect players":
#Prep the player list
for i in range(len(self.players)):
script_vars[f"playerId{i}"] = self.players[i]
if call_name == "end game":
#prepare the player results
for i in range(len(self.players)):
player_xp = random.randrange(10,100)
player_headshots = random.randrange(0,5)
script_vars[f"playerHeadshots{i}"] = str(player_headshots)
script_vars[f"playerXp{i}"] = str(player_xp)
if call_name == "wait":
success_type = call.get("success")
failure_type = call.get("failure")
elapsed_time = (time.time() - start_time)
successful = False
waited_time = 0
while True:
if failure_type and failure_type in self.notifications:
#print(f"Recieved failure notification: waited: {waited_time} {failure_type}")
del self.notifications[failure_type]
sucesssful = True
break
if success_type and success_type in self.notifications:
successful = True
#print(f"Received success notification: waited: {waited_time} {success_type} ")
del self.notifications[success_type]
break
elapsed_time = (time.time() - start_time)
if elapsed_time >= timeout:
raise TimeoutError(f"Websocket waiting for notification {call_name} successType:{success_type} failureType:{failure_type} failed with a timeout! slept: {waited_time} ")
wait_left = timeout - elapsed_time
waited_time = self.wait_for_result(wait_left)
if successful:
continue
else:
break
# TODO: Something causes this to not yield after the block for most of the calls, which messes up the response time tracking for most of the calls
# We need some of these calls to loop indefinitely (ReportCapacity)
while True:
with common.manual_report(call.get('name')):
if call_name == "keep game alive":
#Sleep before we ping again
gevent.sleep(10)
RUNNING[self] = {'timeout': timeout, 'start-time': time.time()}
# Do variable replacement in the request body
body_json = call.get('body')
body = self.stringize_element(body_json, script_vars)
headers = self.listize_element(call.get('headers') | self.ws_headers, script_vars)
if "type" in body_json:
call_type = f"{call_name} : {body_json['type']}"
ws_url = f"{self.host}/{call.get('uri')}"
self.send(body, call_type)
elapsed_time = (time.time() - start_time)
waited_time = self.wait_for_result(timeout)
if call.get('return'):
for property in call.get('return'):
path = call.get('return').get(property)
return_value = self.get_return_value(self.my_value, path)
script_vars[property] = return_value
if (elapsed_time >= timeout) and not self.my_value:
raise TimeoutError(f"Websocket call {call.get('name')} failed with a timeout!")
if call_name == "end game":
#Clean up after the match is done
self.players = []
self.game_instance_id = 0
if call_name == "report capacity":
#Check to see if we got a gameInstanceId, otherwise continue to loop
try:
game_instance_ids = self.my_value['response']['payload']['gameInstanceIds']
#This is to catch an odd issue where we saw a KeyError indicating that payload contained no gameInstanceIds
except KeyError:
print(self.my_value)
raise
if game_instance_ids:
self.game_instance_id = game_instance_ids[0]
script_vars["gameInstanceId"] = self.game_instance_id
break
else:
gevent.sleep(1)
else:
if repeat > 0:
repeat -= 1
else:
break
def on_message(self, message):
super().on_message(message) # handle in the User first
message = json.loads(message)
name = self.get_name_from_json(message)
if self.show_responses:
print(f"Response from server {self.server_id} script call {name} : ")
print(json.dumps(message, indent=4))
self.process_message_by_type(name, message)
if message.get("response"):
self.my_value = message
if message.get("notification"):
self.notifications[name] = message
self.last_received = time.time()
self.notify_result.set()