Update Rust Client

README.md

@@ -140,4 +140,4 @@ API specification
 Contributors
 ============
 
-See the [contributors page] (https://github.com/openai/gym-http-api/graphs/contributors)
+See the [contributors page](https://github.com/openai/gym-http-api/graphs/contributors)

binding-rust/Cargo.toml

@@ -5,5 +5,6 @@ authors = ["NivenT <[email protected]>"]
 
 [dependencies]
 rand = "0.3.14"
-serde_json = "0.8.0"
-hyper = "0.9.12"
+serde = "1.0.10"
+serde_json = "1.0.2"
+reqwest = "0.7.1"

binding-rust/examples/random_agent.rs

@@ -1,20 +1,20 @@
 extern crate gym;
 
-use gym::*;
+use gym::GymClient;
 
 fn main() {
 	println!("**********************************");
 
-	let mut client = GymClient::new("http://localhost:5000".to_string());
-	//println!("already running environments:\n{:?}\n", client.get_envs().unwrap());
+	let client = GymClient::new("http://localhost:5000".to_string()).unwrap();
+	println!("already running environments:\n{:?}\n", client.get_envs().unwrap());
 
-	let mut env = match client.make("CartPole-v0") {
+	let env = match client.make("CartPole-v0") {
 		Ok(env) => env,
 		Err(msg) => panic!("Could not make environment because of error:\n{}", msg)
 	};
 
-	//println!("observation space:\n{:?}\n", env.observation_space());
-	//println!("action space:\n{:?}\n", env.action_space());
+	println!("observation space:\n{:?}\n", env.observation_space());
+	println!("action space:\n{:?}\n", env.action_space());
 
 	let _ = env.monitor_start("/tmp/random-agent-results".to_string(), true, false);
 	for ep in 0..10 {

binding-rust/src/error.rs

@@ -0,0 +1,44 @@
+use std::error::Error;
+use std::fmt;
+
+use serde_json;
+
+use reqwest;
+
+pub type GymResult<T> = Result<T, GymError>;
+
+#[derive(Debug)]
+pub enum GymError {
+    Connection(reqwest::Error),
+    Json(serde_json::Error)
+}
+
+impl fmt::Display for GymError {
+	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+		match *self {
+			GymError::Connection(ref err) => fmt::Display::fmt(err, f),
+			GymError::Json(ref err)		  => fmt::Display::fmt(err, f),
+		}
+	}
+}
+
+impl Error for GymError {
+	fn description(&self) -> &str {
+		match *self {
+			GymError::Connection(ref err) => err.description(),
+			GymError::Json(ref err)       => err.description()
+		}
+	}
+}
+
+impl From<reqwest::Error> for GymError {
+	fn from(err: reqwest::Error) -> GymError {
+		GymError::Connection(err)
+	}
+}
+
+impl From<serde_json::Error> for GymError {
+	fn from(err: serde_json::Error) -> GymError {
+		GymError::Json(err)
+	}
+}