#8 Destination class

src/main/java/io/jare/tk/Destination.java

@@ -0,0 +1,107 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 jare.io
+ *
+ * Permission is hereby granted, free of charge,  to any person obtaining
+ * a copy  of  this  software  and  associated  documentation files  (the
+ * "Software"),  to deal in the Software  without restriction,  including
+ * without limitation the rights to use,  copy,  modify,  merge, publish,
+ * distribute,  sublicense,  and/or sell  copies of the Software,  and to
+ * permit persons to whom the Software is furnished to do so,  subject to
+ * the  following  conditions:   the  above  copyright  notice  and  this
+ * permission notice  shall  be  included  in  all copies or  substantial
+ * portions of the Software.  The software is provided  "as is",  without
+ * warranty of any kind, express or implied, including but not limited to
+ * the warranties  of merchantability,  fitness for  a particular purpose
+ * and non-infringement.  In  no  event shall  the  authors  or copyright
+ * holders be liable for any claim,  damages or other liability,  whether
+ * in an action of contract,  tort or otherwise,  arising from, out of or
+ * in connection with the software or  the  use  or other dealings in the
+ * software.
+ */
+package io.jare.tk;
+
+import io.jare.model.Base;
+import io.jare.model.Domain;
+import java.net.HttpURLConnection;
+import java.net.URI;
+import java.util.Iterator;
+import java.util.Locale;
+import org.takes.HttpException;
+
+/**
+ * Destination for relay.
+ *
+ * @author Yegor Bugayenko (yegor@teamed.io)
+ * @version $Id$
+ * @since 0.4
+ */
+final class Destination {
+
+    /**
+     * Base.
+     */
+    private final transient Base base;
+
+    /**
+     * Destination URI.
+     */
+    private final transient URI uri;
+
+    /**
+     * Ctor.
+     * @param bse Base
+     * @param dst Destination URI (full)
+     */
+    Destination(final Base bse, final URI dst) {
+        this.base = bse;
+        this.uri = dst;
+    }
+
+    /**
+     * Build destination path.
+     * @return Destination path
+     * @throws HttpException If fails
+     */
+    public String path() throws HttpException {
+        if (!this.uri.isAbsolute()) {
+            throw new HttpException(
+                HttpURLConnection.HTTP_BAD_REQUEST,
+                String.format("URI \"%s\" is not absolute", this.uri)
+            );
+        }
+        final String protocol = this.uri.getScheme();
+        if (!"https".equals(protocol) && !"http".equals(protocol)) {
+            throw new HttpException(
+                HttpURLConnection.HTTP_BAD_REQUEST,
+                String.format(
+                    "protocol must be either HTTP or HTTPS at \"%s\"",
+                    this.uri
+                )
+            );
+        }
+        if (this.uri.getHost() == null) {
+            throw new HttpException(
+                HttpURLConnection.HTTP_BAD_REQUEST,
+                String.format("URI \"%s\" doesn't have a host", this.uri)
+            );
+        }
+        final String host = this.uri.getHost().toLowerCase(Locale.ENGLISH);
+        final Iterator<Domain> domains = this.base.domain(host);
+        if (!domains.hasNext()) {
+            throw new HttpException(
+                HttpURLConnection.HTTP_BAD_REQUEST,
+                String.format("domain \"%s\" is not registered", host)
+            );
+        }
+        final String path;
+        if (this.uri.getPath().isEmpty()) {
+            path = "/";
+        } else {
+            path = this.uri.getPath();
+        }
+        return path;
+    }
+
+}

src/main/java/io/jare/tk/TkRelay.java

@@ -24,14 +24,12 @@
 
 import com.google.common.collect.Iterables;
 import io.jare.model.Base;
-import io.jare.model.Domain;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.HttpURLConnection;
 import java.net.URI;
 import java.util.Collections;
 import java.util.Iterator;
-import java.util.Locale;
 import org.takes.HttpException;
 import org.takes.Request;
 import org.takes.Response;
@@ -75,58 +73,12 @@ public Response act(final Request req) throws IOException {
         final URI uri = URI.create(param.next().trim());
         return new RsWithHeader(
             new TkProxy(uri.toString()).act(
-                TkRelay.request(req, this.path(uri))
+                TkRelay.request(req, new Destination(this.base, uri).path())
             ),
             String.format("X-Jare-Target: %s", uri)
         );
     }
 
-    /**
-     * Build destination path.
-     * @param uri URI of destination
-     * @return Destination path
-     * @throws HttpException If fails
-     */
-    private String path(final URI uri) throws HttpException {
-        if (!uri.isAbsolute()) {
-            throw new HttpException(
-                HttpURLConnection.HTTP_BAD_REQUEST,
-                String.format("URI \"%s\" is not absolute", uri)
-            );
-        }
-        final String protocol = uri.getScheme();
-        if (!"https".equals(protocol) && !"http".equals(protocol)) {
-            throw new HttpException(
-                HttpURLConnection.HTTP_BAD_REQUEST,
-                String.format(
-                    "protocol must be either HTTP or HTTPS at \"%s\"",
-                    uri
-                )
-            );
-        }
-        if (uri.getHost() == null) {
-            throw new HttpException(
-                HttpURLConnection.HTTP_BAD_REQUEST,
-                String.format("URI \"%s\" doesn't have a host", uri)
-            );
-        }
-        final String host = uri.getHost().toLowerCase(Locale.ENGLISH);
-        final Iterator<Domain> domains = this.base.domain(host);
-        if (!domains.hasNext()) {
-            throw new HttpException(
-                HttpURLConnection.HTTP_BAD_REQUEST,
-                String.format("domain \"%s\" is not registered", host)
-            );
-        }
-        final String path;
-        if (uri.getPath().isEmpty()) {
-            path = "/";
-        } else {
-            path = uri.getPath();
-        }
-        return path;
-    }
-
     /**
      * The request to send.
      * @param req Original request