[rllib] Rename ServingEnv => ExternalEnv (#3302)

python/ray/rllib/examples/serving/cartpole_client.py

@@ -29,7 +29,7 @@ parser.add_argument(
 if __name__ == "__main__":
     args = parser.parse_args()
     env = gym.make("CartPole-v0")
-    client = PolicyClient("http://localhost:8900")
+    client = PolicyClient("http://localhost:9900")
 
     eid = client.start_episode(training_enabled=not args.no_train)
     obs = env.reset()

python/ray/rllib/examples/serving/cartpole_server.py

@@ -14,19 +14,19 @@ import numpy as np
 
 import ray
 from ray.rllib.agents.dqn import DQNAgent
-from ray.rllib.env.serving_env import ServingEnv
+from ray.rllib.env.external_env import ExternalEnv
 from ray.rllib.utils.policy_server import PolicyServer
 from ray.tune.logger import pretty_print
 from ray.tune.registry import register_env
 
 SERVER_ADDRESS = "localhost"
-SERVER_PORT = 8900
+SERVER_PORT = 9900
 CHECKPOINT_FILE = "last_checkpoint.out"
 
 
-class CartpoleServing(ServingEnv):
+class CartpoleServing(ExternalEnv):
     def __init__(self):
-        ServingEnv.__init__(
+        ExternalEnv.__init__(
             self, spaces.Discrete(2),
             spaces.Box(low=-10, high=10, shape=(4, ), dtype=np.float32))
 

python/ray/rllib/examples/serving/test.sh

@@ -4,7 +4,7 @@ pkill -f cartpole_server.py
 (python cartpole_server.py 2>&1 | grep -v 200) &
 pid=$!
 
-while ! curl localhost:8900; do   
+while ! curl localhost:9900; do   
   sleep 1
 done