Rewrite configuration layer to use Typesafe config

* Add custom mapping to convert Typesafe Config to Atomix
* Add type registries for custom object types

agent/src/main/java/io/atomix/agent/AtomixAgent.java

@@ -21,7 +21,6 @@
 import io.atomix.core.AtomixConfig;
 import io.atomix.rest.ManagedRestService;
 import io.atomix.rest.RestService;
-import io.atomix.utils.config.Configs;
 import io.atomix.utils.net.Address;
 import io.atomix.utils.net.MalformedAddressException;
 import net.sourceforge.argparse4j.ArgumentParsers;
@@ -34,7 +33,6 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.io.File;
 import java.util.List;
 
 /**
@@ -105,7 +103,7 @@ public static void main(String[] args) throws Exception {
     // If a configuration was provided, merge the configuration's member information with the provided command line arguments.
     AtomixConfig config;
     if (configString != null) {
-      config = loadConfig(configString);
+      config = Atomix.config(configString);
     } else {
       config = new AtomixConfig();
     }
@@ -182,18 +180,6 @@ public static void main(String[] args) throws Exception {
     }
   }
 
-  /**
-   * Loads a configuration from the given file.
-   */
-  private static AtomixConfig loadConfig(String config) {
-    File configFile = new File(config);
-    if (configFile.exists()) {
-      return Configs.load(configFile, AtomixConfig.class, Thread.currentThread().getContextClassLoader());
-    } else {
-      return Configs.load(config, AtomixConfig.class, Thread.currentThread().getContextClassLoader());
-    }
-  }
-
   static MemberId parseMemberId(String address) {
     int endIndex = address.indexOf('@');
     if (endIndex > 0) {

cluster/src/main/java/io/atomix/cluster/AtomixCluster.java

@@ -32,7 +32,7 @@
 import io.atomix.utils.concurrent.Futures;
 import io.atomix.utils.concurrent.SingleThreadContext;
 import io.atomix.utils.concurrent.ThreadContext;
-import io.atomix.utils.config.Configs;
+import io.atomix.utils.config.ConfigMapper;
 import io.atomix.utils.net.Address;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -233,7 +233,7 @@ public String toString() {
    * Loads a configuration from the given file.
    */
   private static ClusterConfig loadConfig(File config, ClassLoader classLoader) {
-    return Configs.load(config, ClusterConfig.class, classLoader);
+    return new ConfigMapper(classLoader).loadResources(ClusterConfig.class, config.getAbsolutePath());
   }
 
   /**