1 files changed, 75 insertions, 0 deletions
diff --git a/infra/northbound/bgp/src/main/java/io/fd/honeycomb/infra/bgp/neighbors/ProtocolCustomizer.java b/infra/northbound/bgp/src/main/java/io/fd/honeycomb/infra/bgp/neighbors/ProtocolCustomizer.java
new file mode 100644
index 000000000..7e0dd8f45
--- /dev/null
+++ b/infra/northbound/bgp/src/main/java/io/fd/honeycomb/infra/bgp/neighbors/ProtocolCustomizer.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2017 Cisco 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.honeycomb.infra.bgp.neighbors;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer;
+import io.fd.honeycomb.translate.write.WriteContext;
+import io.fd.honeycomb.translate.write.WriteFailedException;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.network.instance.rev151018.network.instance.top.network.instances.network.instance.protocols.Protocol;
+import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.network.instance.rev151018.network.instance.top.network.instances.network.instance.protocols.ProtocolKey;
+import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.policy.types.rev151009.BGP;
+import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.policy.types.rev151009.InstallProtocolType;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * Dummy customizer for handling network-instance's protocol node required by BGP peer configuration (HC implements the
+ * same model as ODL BGP).
+ *
+ * Ensures that at most one protocol is created.
+ *
+ * Update and delete is not supported, because HC does not support runtime BGP server reconfiguration.
+ */
+final class ProtocolCustomizer implements ListWriterCustomizer<Protocol, ProtocolKey> {
+    private final String protocolInstanceName;
+
+    ProtocolCustomizer(@Nonnull final String protocolInstanceName) {
+        this.protocolInstanceName = checkNotNull(protocolInstanceName, "protocol instance name should not be null");
+    }
+
+    @Override
+    public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<Protocol> id,
+                                       @Nonnull final Protocol dataAfter, @Nonnull final WriteContext writeContext)
+        throws WriteFailedException {
+        final String protocolName = dataAfter.getName();
+        checkArgument(protocolInstanceName.equals(protocolName),
+            "Only single protocol named %s is supported, but %s was given", protocolInstanceName, protocolName);
+
+        final Class<? extends InstallProtocolType> identifier = dataAfter.getIdentifier();
+        checkArgument(BGP.class.equals(identifier),
+            "Only BGP protocol type is supported, but %s was given", identifier);
+    }
+
+    @Override
+    public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<Protocol> id,
+                                        @Nonnull final Protocol dataBefore, @Nonnull final Protocol dataAfter,
+                                        @Nonnull final WriteContext writeContext) throws WriteFailedException {
+        throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter,
+            new UnsupportedOperationException("Network instance protocol update is not supported"));
+    }
+
+    @Override
+    public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<Protocol> id,
+                                        @Nonnull final Protocol dataBefore, @Nonnull final WriteContext writeContext)
+        throws WriteFailedException {
+        throw new WriteFailedException.DeleteFailedException(id,
+            new UnsupportedOperationException("Network instance protocol delete is not supported"));
+    }
+}