HONEYCOMB-369: configurable BGP peers

BGP peer configuration is no longer read from bgp-peer.json file.
Netconf/Restconf is can be used instead.
BGP peer configuration in HC follows openconfig-extensions model (as in ODL BGP):
* http://docs.opendaylight.org/en/stable-boron/user-guide/bgp-user-guide.html#bgp-peering
* http://docs.opendaylight.org/en/stable-boron/user-guide/bgp-user-guide.html#bgp-application-peer-and-programmable-rib

Change-Id: I91aa6c4fc0923edbacf6cd10abd3957569a4f8c6
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>
(cherry picked from commit a3d562afdd96d4c37fe608af99f364e879ee92b6)

1 files changed, 70 insertions, 0 deletions

diff --git a/infra/northbound/bgp/src/main/java/io/fd/honeycomb/infra/bgp/neighbors/NetworkInstanceCustomizer.java b/infra/northbound/bgp/src/main/java/io/fd/honeycomb/infra/bgp/neighbors/NetworkInstanceCustomizer.java
new file mode 100644
index 000000000..1505537ab
--- /dev/null
+++ b/infra/northbound/bgp/src/main/java/io/fd/honeycomb/infra/bgp/neighbors/NetworkInstanceCustomizer.java
@@ -0,0 +1,70 @@
+/*
+ * 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.NetworkInstance;
+import org.opendaylight.yang.gen.v1.http.openconfig.net.yang.network.instance.rev151018.network.instance.top.network.instances.NetworkInstanceKey;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * Dummy customizer for handling network-instance node required by BGP peer configuration (HC implements the same model
+ * as ODL BGP).
+ *
+ * Ensures that at most one network instance is created.
+ *
+ * Update and delete is not supported, because HC does not support runtime BGP server reconfiguration.
+ */
+final class NetworkInstanceCustomizer implements ListWriterCustomizer<NetworkInstance, NetworkInstanceKey> {
+    private final String networkInstanceName;
+
+    NetworkInstanceCustomizer(@Nonnull final String networkInstanceName) {
+        this.networkInstanceName = checkNotNull(networkInstanceName, "network instance name should not be null");
+    }
+
+    @Override
+    public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<NetworkInstance> id,
+                                       @Nonnull final NetworkInstance dataAfter,
+                                       @Nonnull final WriteContext writeContext) throws WriteFailedException {
+        final String instanceName = dataAfter.getName();
+        checkArgument(networkInstanceName.equals(instanceName),
+            "Only single network instance named %s is supported, but %s was given", networkInstanceName, instanceName);
+    }
+
+    @Override
+    public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<NetworkInstance> id,
+                                        @Nonnull final NetworkInstance dataBefore,
+                                        @Nonnull final NetworkInstance dataAfter,
+                                        @Nonnull final WriteContext writeContext) throws WriteFailedException {
+        throw new WriteFailedException.UpdateFailedException(id, dataBefore, dataAfter,
+            new UnsupportedOperationException("Network instance update is not supported"));
+    }
+
+    @Override
+    public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<NetworkInstance> id,
+                                        @Nonnull final NetworkInstance dataBefore,
+                                        @Nonnull final WriteContext writeContext) throws WriteFailedException {
+        throw new WriteFailedException.DeleteFailedException(id,
+            new UnsupportedOperationException("Network instance delete is not supported"));
+    }
+}