Implement AutoCloseable

CHANGELOG.md

@@ -2,6 +2,7 @@
 * [feature] Initialization from environment variables using `fromEnv()` in factory (#8)
 * [feature] Automatic authentication with `buildAndAuth()`
 * [feature] Custom timeout and number of retries (#9)
+* [feature] Connector implements `AutoCloseable`
 * [fix] `SecretResponse` does not throw NPE on `get(key)` and `getData()` 
 
 ## 0.5.0 [2017-03-18]

src/main/java/de/stklcode/jvault/connector/HTTPVaultConnector.java

@@ -610,6 +610,13 @@ public class HTTPVaultConnector implements VaultConnector {
         return createTokenInternal(token, PATH_TOKEN + PATH_CREATE + "/" + role);
     }
 
+    @Override
+    public void close() {
+        authorized = false;
+        token = null;
+        tokenTTL = 0;
+    }
+
     /**
      * Create token.
      * Centralized method to handle different token creation requests.

src/main/java/de/stklcode/jvault/connector/VaultConnector.java

@@ -30,7 +30,7 @@ import java.util.*;
  * @author Stefan Kalscheuer
  * @since 0.1
  */
-public interface VaultConnector {
+public interface VaultConnector extends AutoCloseable {
     String PATH_SECRET = "secret";
 
     /**