1 files changed, 54 insertions, 0 deletions
diff --git a/container-core/src/main/java/com/yahoo/jdisc/http/filter/chain/ResponseFilterChain.java b/container-core/src/main/java/com/yahoo/jdisc/http/filter/chain/ResponseFilterChain.java
new file mode 100644
index 00000000000..5c5eda1f139
--- /dev/null
+++ b/container-core/src/main/java/com/yahoo/jdisc/http/filter/chain/ResponseFilterChain.java
@@ -0,0 +1,54 @@
+// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.jdisc.http.filter.chain;
+
+import com.yahoo.jdisc.AbstractResource;
+import com.yahoo.jdisc.Request;
+import com.yahoo.jdisc.Response;
+import com.yahoo.jdisc.application.ResourcePool;
+import com.yahoo.jdisc.http.filter.ResponseFilter;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * @author Simon Thoresen Hult
+ */
+public final class ResponseFilterChain extends AbstractResource implements ResponseFilter {
+
+    private final List<ResponseFilter> filters = new ArrayList<>();
+    private final ResourcePool filterReferences = new ResourcePool();
+
+    private ResponseFilterChain(Iterable<? extends ResponseFilter> filters) {
+        for (ResponseFilter filter : filters) {
+            this.filters.add(filter);
+            filterReferences.retain(filter);
+        }
+    }
+
+    @Override
+    public void filter(Response response, Request request) {
+        for (ResponseFilter filter : filters) {
+            filter.filter(response, request);
+        }
+    }
+
+    @Override
+    protected void destroy() {
+        filterReferences.release();
+    }
+
+    public static ResponseFilter newInstance(ResponseFilter... filters) {
+        return newInstance(Arrays.asList(filters));
+    }
+
+    public static ResponseFilter newInstance(List<? extends ResponseFilter> filters) {
+        if (filters.size() == 0) {
+            return EmptyResponseFilter.INSTANCE;
+        }
+        if (filters.size() == 1) {
+            return filters.get(0);
+        }
+        return new ResponseFilterChain(filters);
+    }
+}