HC2VPP-192 - Removing of locator pair mapping

 When negative mapping(no locators present),
 do not invoke read as it would fail on non existing
 parent data

Change-Id: Ia20d707efd4d7fdab62d9dc0cd0b4003bc7de3cb
Signed-off-by: Jan Srnicek <jsrnicek@cisco.com>

2 files changed, 157 insertions, 1 deletions

diff --git a/lisp/lisp2vpp/src/main/java/io/fd/hc2vpp/lisp/gpe/translate/ctx/GpeLocatorPairMappingContextImpl.java b/lisp/lisp2vpp/src/main/java/io/fd/hc2vpp/lisp/gpe/translate/ctx/GpeLocatorPairMappingContextImpl.java
index a7d84d2b6..766478fd5 100644
--- a/lisp/lisp2vpp/src/main/java/io/fd/hc2vpp/lisp/gpe/translate/ctx/GpeLocatorPairMappingContextImpl.java
+++ b/lisp/lisp2vpp/src/main/java/io/fd/hc2vpp/lisp/gpe/translate/ctx/GpeLocatorPairMappingContextImpl.java
@@ -69,7 +69,11 @@ public class GpeLocatorPairMappingContextImpl implements GpeLocatorPairMappingCo
     public void removeMapping(@Nonnull final String entryId,
                               @Nonnull final MappingContext mappingContext) {
         LOG.debug("Removing all mappings for Gpe entry[id={}]", entryId);
-        mappingContext.delete(getMappingId(entryId));
+        KeyedInstanceIdentifier<Mapping, MappingKey> mappingId = getMappingId(entryId);
+        // if no mapping present, no need to invoke delete(it would throw error because of non existing parent data)
+        if (mappingContext.read(mappingId).isPresent()) {
+            mappingContext.delete(mappingId);
+        }
         LOG.debug("All mappings for Gpe entry[id={}] removed", entryId);
     }
 
diff --git a/lisp/lisp2vpp/src/test/java/io/fd/hc2vpp/lisp/gpe/translate/ctx/GpeLocatorPairMappingContextImplTest.java b/lisp/lisp2vpp/src/test/java/io/fd/hc2vpp/lisp/gpe/translate/ctx/GpeLocatorPairMappingContextImplTest.java
new file mode 100644
index 000000000..ed1d2d7d6
--- /dev/null
+++ b/lisp/lisp2vpp/src/test/java/io/fd/hc2vpp/lisp/gpe/translate/ctx/GpeLocatorPairMappingContextImplTest.java
@@ -0,0 +1,152 @@
+/*
+ * 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.hc2vpp.lisp.gpe.translate.ctx;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyNoMoreInteractions;
+import static org.mockito.Mockito.when;
+import static org.mockito.MockitoAnnotations.initMocks;
+
+import com.google.common.base.Optional;
+import io.fd.honeycomb.translate.MappingContext;
+import java.util.Collections;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.GpeLocatorPairIdentificationCtxAugmentation;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.GpeLocatorPairIdentificationContexts;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.gpe.locator.pair.identification.contexts.GpeLocatorPairIdentification;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.gpe.locator.pair.identification.contexts.GpeLocatorPairIdentificationKey;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.gpe.locator.pair.identification.contexts.gpe.locator.pair.identification.Mappings;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.gpe.locator.pair.identification.contexts.gpe.locator.pair.identification.mappings.Mapping;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.gpe.locator.pair.identification.contexts.gpe.locator.pair.identification.mappings.MappingBuilder;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.gpe.locator.pair.identification.contexts.gpe.locator.pair.identification.mappings.MappingKey;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.gpe.locator.pair.identification.contexts.gpe.locator.pair.identification.mappings.mapping.LocatorPairMapping;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.gpe.locator.pair.identification.contexts.gpe.locator.pair.identification.mappings.mapping.LocatorPairMappingBuilder;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.gpe.locator.pair.identification.contexts.gpe.locator.pair.identification.mappings.mapping.locator.pair.mapping.Pair;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.gpe.locator.pair.identification.context.rev170517.gpe.locator.pair.identification.context.attributes.gpe.locator.pair.identification.contexts.gpe.locator.pair.identification.mappings.mapping.locator.pair.mapping.PairBuilder;
+import org.opendaylight.yang.gen.v1.urn.honeycomb.params.xml.ns.yang.naming.context.rev160513.Contexts;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddress;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.Ipv4Address;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.opendaylight.yangtools.yang.binding.KeyedInstanceIdentifier;
+
+public class GpeLocatorPairMappingContextImplTest {
+
+    private static final String INSTANCE = "instance";
+
+    @Mock
+    private MappingContext mappingContext;
+
+    private GpeLocatorPairMappingContextImpl mapping;
+    private IpAddress localAddress;
+    private IpAddress remoteAddress;
+    private String entryId;
+    private String locatorId;
+
+    @Before
+    public void setUp() throws Exception {
+        initMocks(this);
+        mapping = new GpeLocatorPairMappingContextImpl(INSTANCE);
+        localAddress = new IpAddress(new Ipv4Address("192.168.2.1"));
+        remoteAddress = new IpAddress(new Ipv4Address("192.168.2.1"));
+        entryId = "entry";
+        locatorId = "locator";
+    }
+
+    @Test
+    public void addMapping() throws Exception {
+        mapping.addMapping(entryId, locatorId, gpeLocatorPair(localAddress, remoteAddress), mappingContext);
+        verify(mappingContext, times(1)).merge(mappingId(entryId),
+                mapingData(entryId, locatorId, localAddress, remoteAddress));
+        verifyNoMoreInteractions(mappingContext);
+    }
+
+    @Test
+    public void removeMappingPresent() throws Exception {
+        KeyedInstanceIdentifier<Mapping, MappingKey> instanceIdentifier = mappingId(entryId);
+        when(mappingContext.read(instanceIdentifier)).thenReturn(Optional.of(new MappingBuilder().build()));
+        mapping.removeMapping(entryId, mappingContext);
+        verify(mappingContext, times(1)).read(instanceIdentifier);
+        verify(mappingContext, times(1)).delete(instanceIdentifier);
+        verifyNoMoreInteractions(mappingContext);
+    }
+
+    @Test
+    public void removeMappingNotPresent() throws Exception {
+        when(mappingContext.read(mappingId(entryId))).thenReturn(Optional.absent());
+        mapping.removeMapping(entryId, mappingContext);
+        verify(mappingContext, times(1)).read(mappingId(entryId));
+        verifyNoMoreInteractions(mappingContext);
+    }
+
+
+    @Test
+    public void getMappingTextLocatorId() throws Exception {
+        when(mappingContext.read(mappingId(entryId)))
+                .thenReturn(Optional.of(mapingData(entryId, locatorId, localAddress, remoteAddress)));
+        final LocatorPairMapping mapping = this.mapping.getMapping(entryId, locatorId, mappingContext);
+        assertNotNull(mapping);
+        assertEquals(locatorId, mapping.getId());
+        final Pair pair = mapping.getPair();
+        assertEquals(localAddress, pair.getLocalAddress());
+        assertEquals(remoteAddress, pair.getRemoteAddress());
+    }
+
+    @Test
+    public void getMappingObjectLocatorId() throws Exception {
+        when(mappingContext.read(mappingId(entryId)))
+                .thenReturn(Optional.of(mapingData(entryId, locatorId, localAddress, remoteAddress)));
+        final LocatorPairMapping mapping =
+                this.mapping.getMapping(entryId, gpeLocatorPair(localAddress, remoteAddress), mappingContext);
+        assertNotNull(mapping);
+        assertEquals(locatorId, mapping.getId());
+        final Pair pair = mapping.getPair();
+        assertEquals(localAddress, pair.getLocalAddress());
+        assertEquals(remoteAddress, pair.getRemoteAddress());
+    }
+
+    private static GpeLocatorPair gpeLocatorPair(final IpAddress localAddress, final IpAddress remoteAddress) {
+        return new GpeLocatorPair.GpeLocatorPairBuilder().setLocalAddress(localAddress).setRemoteAddress(remoteAddress)
+                .createGpeLocatorPairIdentifier();
+    }
+
+    private static KeyedInstanceIdentifier<Mapping, MappingKey> mappingId(String entryId) {
+        return InstanceIdentifier.create(Contexts.class)
+                .augmentation(GpeLocatorPairIdentificationCtxAugmentation.class)
+                .child(GpeLocatorPairIdentificationContexts.class)
+                .child(GpeLocatorPairIdentification.class, new GpeLocatorPairIdentificationKey(INSTANCE))
+                .child(Mappings.class)
+                .child(Mapping.class, new MappingKey(entryId));
+    }
+
+    private static Mapping mapingData(String entryId, String locatorId, IpAddress localAddress,
+                                      IpAddress remoteAddress) {
+        return new MappingBuilder()
+                .setId(entryId)
+                .setLocatorPairMapping(Collections.singletonList(new LocatorPairMappingBuilder()
+                        .setId(locatorId)
+                        .setPair(new PairBuilder()
+                                .setLocalAddress(localAddress)
+                                .setRemoteAddress(remoteAddress)
+                                .build())
+                        .build())).build();
+    }
+}
\ No newline at end of file