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/*
* Copyright (c) 2016 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.v3po.data.impl;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Matchers.any;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import com.google.common.io.ByteStreams;
import java.nio.file.Files;
import java.nio.file.Path;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.opendaylight.controller.sal.core.api.model.SchemaService;
import org.opendaylight.yangtools.yang.common.QName;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
import org.opendaylight.yangtools.yang.parser.stmt.reactor.CrossSourceStatementReactor;
import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.YangInferencePipeline;
import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.YangStatementSourceImpl;
import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.EffectiveSchemaContext;
public class PersistingDataTreeAdapterTest {
public static final String NAMESPACE = "urn:opendaylight:params:xml:ns:yang:test:persistence";
// The root QNAME can be anything, onyl its children are iterated
private static final QName ROOT_QNAME = QName.create("random", "data");
private static final QName TOP_CONTAINER_NAME = QName.create(NAMESPACE, "2015-01-05", "top-container");
private static final QName STRING_LEAF_QNAME = QName.create(TOP_CONTAINER_NAME, "string");
@Mock
private DataTree delegatingDataTree;
@Mock
private SchemaService schemaService;
@Mock
private DataTreeSnapshot snapshot;
private Path tmpPersistFile;
private PersistingDataTreeAdapter persistingDataTreeAdapter;
@Before
public void setUp() throws Exception {
MockitoAnnotations.initMocks(this);
tmpPersistFile = Files.createTempFile("testing-hc-persistence", "json");
// Build test yang schemas
final CrossSourceStatementReactor.BuildAction buildAction = YangInferencePipeline.RFC6020_REACTOR.newBuild();
buildAction.addSource(new YangStatementSourceImpl(getClass().getResourceAsStream("/test-persistence.yang")));
final EffectiveSchemaContext effectiveSchemaContext = buildAction.buildEffective();
doReturn(effectiveSchemaContext).when(schemaService).getGlobalContext();
persistingDataTreeAdapter = new PersistingDataTreeAdapter(delegatingDataTree, schemaService, tmpPersistFile);
}
@Test
public void testPersist() throws Exception {
doReturn(snapshot).when(delegatingDataTree).takeSnapshot();
NormalizedNode<?, ?> data = getData("testing");
doReturn(com.google.common.base.Optional.of(data)).when(snapshot).readNode(YangInstanceIdentifier.EMPTY);
persistingDataTreeAdapter.commit(null);
assertTrue(Files.exists(tmpPersistFile));
String persisted = new String(Files.readAllBytes(tmpPersistFile));
String expected =
new String(ByteStreams.toByteArray(getClass().getResourceAsStream("/expected-persisted-output.txt")));
assertEquals(expected, persisted);
data = getData("testing2");
doReturn(com.google.common.base.Optional.of(data)).when(snapshot).readNode(YangInstanceIdentifier.EMPTY);
persistingDataTreeAdapter.commit(null);
verify(delegatingDataTree, times(2)).commit(null);
persisted = new String(Files.readAllBytes(tmpPersistFile));
assertEquals(expected.replace("testing", "testing2"), persisted);
persistingDataTreeAdapter.close();
// File has to stay even after close
assertTrue(Files.exists(tmpPersistFile));
}
@Test
public void testNoPersistOnFailure() throws Exception {
doThrow(new IllegalStateException("testing errors")).when(delegatingDataTree).commit(any(DataTreeCandidate.class));
try {
persistingDataTreeAdapter.commit(null);
fail("Exception expected");
} catch (IllegalStateException e) {
assertFalse(Files.exists(tmpPersistFile));
verify(delegatingDataTree, times(0)).takeSnapshot();
verify(delegatingDataTree).commit(any(DataTreeCandidate.class));
}
}
private NormalizedNode<?, ?> getData(final String stringValue) {
return Builders.containerBuilder()
.withNodeIdentifier(new YangInstanceIdentifier.NodeIdentifier(ROOT_QNAME))
.withChild(Builders.containerBuilder()
.withNodeIdentifier(new YangInstanceIdentifier.NodeIdentifier(TOP_CONTAINER_NAME))
.withChild(ImmutableNodes.leafNode(STRING_LEAF_QNAME, stringValue))
.build())
.build();
}
}
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