From f6953c3c460f218f914b9200ec385284b843b093 Mon Sep 17 00:00:00 2001
From: FabioISTI <FabioISTI@192.168.1.100>
Date: Wed, 8 Apr 2020 16:05:43 +0200
Subject: [PATCH] explicit HEAD method

---
 .../gcube/data/transfer/service/transfers/REST.java | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/main/java/org/gcube/data/transfer/service/transfers/REST.java b/src/main/java/org/gcube/data/transfer/service/transfers/REST.java
index 061fe56..162adc8 100644
--- a/src/main/java/org/gcube/data/transfer/service/transfers/REST.java
+++ b/src/main/java/org/gcube/data/transfer/service/transfers/REST.java
@@ -12,6 +12,7 @@ import javax.ws.rs.Consumes;
 import javax.ws.rs.DELETE;
 import javax.ws.rs.DefaultValue;
 import javax.ws.rs.GET;
+import javax.ws.rs.HEAD;
 import javax.ws.rs.POST;
 import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
@@ -26,6 +27,7 @@ import org.gcube.data.transfer.model.DeletionReport;
 import org.gcube.data.transfer.model.Destination;
 import org.gcube.data.transfer.model.DestinationClashPolicy;
 import org.gcube.data.transfer.model.PluginInvocation;
+import org.gcube.data.transfer.model.RemoteFileDescriptor;
 import org.gcube.data.transfer.model.ServiceConstants;
 import org.gcube.data.transfer.model.TransferRequest;
 import org.gcube.data.transfer.model.TransferTicket;
@@ -193,6 +195,17 @@ public class REST {
 		}
 	}
 
+	@HEAD
+	@Produces(MediaType.APPLICATION_JSON)
+	public RemoteFileDescriptor getDescriptor() {
+		String pathString="<"+destinationID+">/"+subPath;		
+		try {
+			log.info("Received HEAD request at {} , descriptor option is {} ",pathString);
+			return persistence.getDescriptor(destinationID, subPath);
+		}catch(DestinationAccessException e) {
+			throw new WebApplicationException("Unable to access selected path "+pathString,e,Status.INTERNAL_SERVER_ERROR);
+		}
+	}
 
 	@DELETE	
 	@Produces(MediaType.APPLICATION_JSON)