HONEYCOMB-106 - Support for generic cache management

Changed exception handling/logging
Removed useless utility class/its logic shifted to respective classes
Cleanup of not needed code

Change-Id: Id2fe4ab60b541067c3d0dc6fa442fbfa66d1e618
Signed-off-by: Jan Srnicek <jsrnicek@cisco.com>

1 files changed, 144 insertions, 0 deletions

diff --git a/v3po/vpp-translate-utils/src/test/java/io/fd/honeycomb/v3po/translate/v3po/util/cache/DumpCacheManagerTest.java b/v3po/vpp-translate-utils/src/test/java/io/fd/honeycomb/v3po/translate/v3po/util/cache/DumpCacheManagerTest.java
new file mode 100644
index 000000000..9cbbda8ad
--- /dev/null
+++ b/v3po/vpp-translate-utils/src/test/java/io/fd/honeycomb/v3po/translate/v3po/util/cache/DumpCacheManagerTest.java
@@ -0,0 +1,144 @@
+/*
+ * 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.translate.v3po.util.cache;
+
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.when;
+
+import com.google.common.base.Optional;
+import io.fd.honeycomb.v3po.translate.ModificationCache;
+import io.fd.honeycomb.v3po.translate.v3po.util.cache.exceptions.check.i.DumpEmptyException;
+import io.fd.honeycomb.v3po.translate.v3po.util.cache.exceptions.execution.DumpExecutionFailedException;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.openvpp.jvpp.dto.IpDetails;
+import org.openvpp.jvpp.dto.IpDetailsReplyDump;
+
+public class DumpCacheManagerTest {
+
+    private static final String KEY = "cacheKey";
+
+    @Mock
+    private EntityDumpExecutor<IpDetailsReplyDump, Void> executor;
+
+    private DumpCacheManager<IpDetailsReplyDump, Void> managerPositive;
+    private DumpCacheManager<IpDetailsReplyDump, Void> managerPositiveWithPostProcessing;
+    private DumpCacheManager<IpDetailsReplyDump, Void> managerNegative;
+    private ModificationCache cache;
+
+    @Before
+    public void init() {
+        MockitoAnnotations.initMocks(this);
+        managerPositive =
+                new DumpCacheManager.DumpCacheManagerBuilder<IpDetailsReplyDump, Void>()
+                        .withExecutor(executor)
+                        .withNonEmptyPredicate(createPositivePredicate())
+                        .build();
+
+        managerPositiveWithPostProcessing = new DumpCacheManager.DumpCacheManagerBuilder<IpDetailsReplyDump, Void>()
+                .withExecutor(executor)
+                .withNonEmptyPredicate(createPositivePredicate())
+                .withPostProcessingFunction(createPostProcessor())
+                .build();
+
+        managerNegative =
+                new DumpCacheManager.DumpCacheManagerBuilder<IpDetailsReplyDump, Void>()
+                        .withExecutor(executor)
+                        .withNonEmptyPredicate(createNegativePredicate())
+                        .build();
+
+        cache = new ModificationCache();
+    }
+
+    /**
+     * This test verify full dump-caching cycle
+     */
+    @Test
+    public void testCaching() throws DumpExecutionFailedException {
+
+
+        Optional<IpDetailsReplyDump> stage1Optional = managerNegative.getDump(KEY, cache);
+
+        //this is first call so instance should be from executor
+        assertEquals(false, stage1Optional.isPresent());
+        assertEquals(false, cache.containsKey(KEY));
+
+        //rebind executor with other data
+        IpDetailsReplyDump stage2LoadedDump = new IpDetailsReplyDump();
+        when(executor.executeDump()).thenReturn(stage2LoadedDump);
+
+        Optional<IpDetailsReplyDump> stage2Optional = managerPositive.getDump(KEY, cache);
+
+        assertEquals(true, stage2Optional.isPresent());
+        assertEquals(stage2LoadedDump, stage2Optional.get());
+
+        //rebind executor with other data
+        IpDetailsReplyDump stage3LoadedDump = new IpDetailsReplyDump();
+        when(executor.executeDump()).thenReturn(stage3LoadedDump);
+
+        Optional<IpDetailsReplyDump> stage3Optional = managerPositive.getDump(KEY, cache);
+        assertEquals(true, stage3Optional.isPresent());
+        //check if it returns instance cached from previous stage
+        assertEquals(stage2LoadedDump, stage3Optional.get());
+    }
+
+    @Test
+    public void testPostprocessing() throws DumpExecutionFailedException {
+        IpDetailsReplyDump dump = new IpDetailsReplyDump();
+        IpDetails details = new IpDetails();
+        details.swIfIndex = 2;
+        dump.ipDetails.add(details);
+
+        when(executor.executeDump()).thenReturn(dump);
+
+        Optional<IpDetailsReplyDump> optionalDump = managerPositiveWithPostProcessing.getDump(KEY, cache);
+
+        assertEquals(true, optionalDump.isPresent());
+        assertEquals(1, optionalDump.get().ipDetails.size());
+        assertEquals(7, optionalDump.get().ipDetails.get(0).swIfIndex);
+    }
+
+    private EntityDumpNonEmptyCheck<IpDetailsReplyDump> createNegativePredicate() {
+        return data -> {
+            throw new DumpEmptyException("Empty dump", new IllegalArgumentException());
+        };
+    }
+
+    private EntityDumpNonEmptyCheck<IpDetailsReplyDump> createPositivePredicate() {
+        return data -> {
+            //DO NOTHING
+        };
+    }
+
+    private EntityDumpPostProcessingFunction<IpDetailsReplyDump> createPostProcessor() {
+        return ipDetailsReplyDump -> {
+            IpDetailsReplyDump modified = new IpDetailsReplyDump();
+
+            for (IpDetails detail : ipDetailsReplyDump.ipDetails) {
+                IpDetails modifiedDetail = new IpDetails();
+                modifiedDetail.swIfIndex = detail.swIfIndex + 5;
+
+                modified.ipDetails.add(modifiedDetail);
+            }
+
+            return modified;
+        };
+    }
+}
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