1 files changed, 123 insertions, 0 deletions
diff --git a/jtosca/src/main/java/org/openecomp/sdc/toscaparser/utils/UrlUtils.java b/jtosca/src/main/java/org/openecomp/sdc/toscaparser/utils/UrlUtils.java
new file mode 100644
index 0000000..1bf2f50
--- /dev/null
+++ b/jtosca/src/main/java/org/openecomp/sdc/toscaparser/utils/UrlUtils.java
@@ -0,0 +1,123 @@
+package org.openecomp.sdc.toscaparser.utils;
+
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+import org.openecomp.sdc.toscaparser.common.ExceptionCollector;
+
+public class UrlUtils {
+	
+	public static boolean validateUrl(String sUrl) {
+        // Validates whether the given path is a URL or not
+
+        // If the given path includes a scheme (http, https, ftp, ...) and a net
+        // location (a domain name such as www.github.com) it is validated as a URL
+		try {
+			URL url = new URL(sUrl);
+			if(url.getProtocol().equals("file")) {
+				return true;
+			}
+			return url.getAuthority() != null;
+		}
+		catch(MalformedURLException e) {
+			return false; 
+		}
+	}
+	
+	public static String joinUrl(String sUrl,String relativePath) {
+        // Builds a new URL from the given URL and the relative path
+
+        // Example:
+        //   url: http://www.githib.com/openstack/heat
+        //   relative_path: heat-translator
+        //   - joined: http://www.githib.com/openstack/heat-translator
+		if(!validateUrl(sUrl)) {
+			ExceptionCollector.appendException(String.format(
+					"ValueError: The URL \"%s\" is malformed",sUrl));
+		}
+		try {
+			URL base = new URL(sUrl);
+			return (new URL(base,relativePath)).toString();
+		}
+		catch(MalformedURLException e) {
+			ExceptionCollector.appendException(String.format(
+					"ValueError: Joining URL \"%s\" and relative path \"%s\" caused an exception",sUrl,relativePath));
+			return sUrl; 
+		}
+	}
+
+	public static boolean isUrlAccessible(String sUrl) {
+        // Validates whether the given URL is accessible
+
+        // Returns true if the get call returns a 200 response code.
+        // Otherwise, returns false.
+		try {
+			HttpURLConnection connection = (HttpURLConnection) new URL(sUrl).openConnection();
+			connection.setRequestMethod("HEAD");
+			int responseCode = connection.getResponseCode();
+			return responseCode == 200;
+		}
+		catch(IOException e) {
+			return false;
+		}
+	}
+
+}
+
+/*python
+
+from six.moves.urllib.parse import urljoin
+from six.moves.urllib.parse import urlparse
+from toscaparser.common.exception import ExceptionCollector
+from toscaparser.utils.gettextutils import _
+
+try:
+    # Python 3.x
+    import urllib.request as urllib2
+except ImportError:
+    # Python 2.x
+    import urllib2
+
+
+class UrlUtils(object):
+
+    @staticmethod
+    def validate_url(path):
+        """Validates whether the given path is a URL or not.
+
+        If the given path includes a scheme (http, https, ftp, ...) and a net
+        location (a domain name such as www.github.com) it is validated as a
+        URL.
+        """
+        parsed = urlparse(path)
+        if parsed.scheme == 'file':
+            # If the url uses the file scheme netloc will be ""
+            return True
+        else:
+            return bool(parsed.scheme) and bool(parsed.netloc)
+
+    @staticmethod
+    def join_url(url, relative_path):
+        """Builds a new URL from the given URL and the relative path.
+
+        Example:
+          url: http://www.githib.com/openstack/heat
+          relative_path: heat-translator
+          - joined: http://www.githib.com/openstack/heat-translator
+        """
+        if not UrlUtils.validate_url(url):
+            ExceptionCollector.appendException(
+                ValueError(_('"%s" is not a valid URL.') % url))
+        return urljoin(url, relative_path)
+
+    @staticmethod
+    def url_accessible(url):
+        """Validates whether the given URL is accessible.
+
+        Returns true if the get call returns a 200 response code.
+        Otherwise, returns false.
+        """
+        return urllib2.urlopen(url).getcode() == 200
+*/
+\ No newline at end of file