Initialize v3po data structures

This is a workaround to avoid posible DataTree exception
when submitting new interface configuration without pre-existing
day0 configuration.

Applies for all list nodes and a proper fix will follow in ODL.

Change-Id: I6ee6e7ae189542d5ae2ad742f431b88745c42c4d
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

1 files changed, 59 insertions, 0 deletions

diff --git a/v3po/impl/src/main/java/org/opendaylight/yang/gen/v1/urn/opendaylight/params/xml/ns/yang/v3po/impl/rev141210/V3poModule.java b/v3po/impl/src/main/java/org/opendaylight/yang/gen/v1/urn/opendaylight/params/xml/ns/yang/v3po/impl/rev141210/V3poModule.java
index 5a5fd1147..0805452c5 100644
--- a/v3po/impl/src/main/java/org/opendaylight/yang/gen/v1/urn/opendaylight/params/xml/ns/yang/v3po/impl/rev141210/V3poModule.java
+++ b/v3po/impl/src/main/java/org/opendaylight/yang/gen/v1/urn/opendaylight/params/xml/ns/yang/v3po/impl/rev141210/V3poModule.java
@@ -16,6 +16,21 @@
 package org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.impl.rev141210;
 
 import io.fd.honeycomb.v3po.impl.V3poProvider;
+import java.util.Collection;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
+import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
+import org.opendaylight.controller.sal.core.api.Broker;
+import org.opendaylight.controller.sal.core.api.Provider;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.Interfaces;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.interfaces.rev140508.interfaces.Interface;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.Vpp;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.BridgeDomains;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.rev150105.vpp.bridge.domains.BridgeDomain;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
 
 public class V3poModule extends org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.v3po.impl.rev141210.AbstractV3poModule {
     public V3poModule(org.opendaylight.controller.config.api.ModuleIdentifier identifier, org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
@@ -33,9 +48,53 @@ public class V3poModule extends org.opendaylight.yang.gen.v1.urn.opendaylight.pa
 
     @Override
     public java.lang.AutoCloseable createInstance() {
+       getDomBrokerDependency().registerProvider(new InitializationProvider());
+
         V3poProvider provider = new V3poProvider();
         getBrokerDependency().registerProvider(provider);
         return provider;
     }
 
+    /**
+     * Writes list parents as a workaround for ODL issue
+     * TODO remove (also remove from yang model and cfg) and fix ODL bug-5382
+     */
+    private class InitializationProvider implements Provider {
+        @Override
+        public void onSessionInitiated(final Broker.ProviderSession providerSession) {
+            final DOMDataBroker service = providerSession.getService(DOMDataBroker.class);
+            final DOMDataWriteTransaction domDataWriteTransaction = service.newWriteOnlyTransaction();
+
+            // Initialize interfaces list
+            YangInstanceIdentifier.NodeIdentifier nodeId = getNodeId(Interfaces.QNAME);
+            YangInstanceIdentifier interfacesYid = YangInstanceIdentifier.create(nodeId);
+            domDataWriteTransaction.merge(LogicalDatastoreType.CONFIGURATION,
+                interfacesYid, Builders.containerBuilder().withNodeIdentifier(nodeId)
+                    .withChild(Builders.mapBuilder().withNodeIdentifier(getNodeId(Interface.QNAME)).build())
+                    .build());
+
+            // Initialize bridge domains list
+            nodeId = getNodeId(BridgeDomains.QNAME);
+            interfacesYid = YangInstanceIdentifier.create(getNodeId(Vpp.QNAME), nodeId);
+            domDataWriteTransaction.merge(LogicalDatastoreType.CONFIGURATION,
+                interfacesYid, Builders.containerBuilder().withNodeIdentifier(nodeId)
+                    .withChild(Builders.mapBuilder().withNodeIdentifier(getNodeId(BridgeDomain.QNAME)).build())
+                    .build());
+
+            try {
+                domDataWriteTransaction.submit().checkedGet();
+            } catch (TransactionCommitFailedException e) {
+                throw new IllegalStateException("Unable to initialize parent data structures", e);
+            }
+        }
+
+        private YangInstanceIdentifier.NodeIdentifier getNodeId(final QName qname) {
+            return new YangInstanceIdentifier.NodeIdentifier(qname);
+        }
+
+        @Override
+        public Collection<ProviderFunctionality> getProviderFunctionality() {
+            return null;
+        }
+    }
 }