1 files changed, 50 insertions, 0 deletions
diff --git a/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/util/function/LocalSidFunctionBindingRegistry.java b/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/util/function/LocalSidFunctionBindingRegistry.java
new file mode 100644
index 000000000..d56656fb9
--- /dev/null
+++ b/srv6/srv6-impl/src/main/java/io/fd/hc2vpp/srv6/util/function/LocalSidFunctionBindingRegistry.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2018 Bell Canada, Pantheon Technologies and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.hc2vpp.srv6.util.function;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import io.fd.hc2vpp.srv6.write.sid.request.LocalSidFunctionRequest;
+import java.util.ArrayList;
+import java.util.List;
+import javax.annotation.Nonnull;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+abstract class LocalSidFunctionBindingRegistry<T extends LocalSidFunctionRequest> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(LocalSidFunctionBindingRegistry.class);
+    final List<LocalSidFunctionBinder<T>> binders;
+
+    LocalSidFunctionBindingRegistry() {
+        binders = new ArrayList<>();
+    }
+
+    @SuppressWarnings("unchecked")
+    public void registerFunctionType(@Nonnull final LocalSidFunctionBinder binder) {
+        checkNotNull(binder, "Cannot register null binder");
+        if (!isFunctionRegistered(binder)) {
+            binders.add(binder);
+        } else {
+            LOG.warn("Binder for class already registered. Canceling registration for {}.", binder);
+        }
+    }
+
+    private boolean isFunctionRegistered(@Nonnull final LocalSidFunctionBinder binder) {
+        return binders.stream().parallel().anyMatch(locBinder -> locBinder.getClass().equals(binder.getClass()));
+    }
+}