1 files changed, 73 insertions, 0 deletions
diff --git a/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/read/GenericInitReader.java b/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/read/GenericInitReader.java
new file mode 100644
index 000000000..024e0a815
--- /dev/null
+++ b/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/read/GenericInitReader.java
@@ -0,0 +1,73 @@
+/*
+ * 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.translate.impl.read;
+
+import static org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType.CONFIGURATION;
+
+import com.google.common.base.Optional;
+import io.fd.honeycomb.translate.read.InitFailedException;
+import io.fd.honeycomb.translate.read.Initializer;
+import io.fd.honeycomb.translate.read.ReadContext;
+import io.fd.honeycomb.translate.read.ReadFailedException;
+import io.fd.honeycomb.translate.spi.read.Initialized;
+import io.fd.honeycomb.translate.spi.read.InitializingReaderCustomizer;
+import javax.annotation.Nonnull;
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
+import org.opendaylight.yangtools.concepts.Builder;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public final class GenericInitReader<O extends DataObject, B extends Builder<O>>
+        extends GenericReader<O, B>
+        implements Initializer<O> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(GenericInitReader.class);
+
+    public GenericInitReader(@Nonnull final InstanceIdentifier<O> id,
+                             @Nonnull final InitializingReaderCustomizer<O, B> customizer) {
+        super(id, customizer);
+    }
+
+    @Override
+    public void init(final DataBroker broker, final InstanceIdentifier<O> id, final ReadContext ctx) throws
+            InitFailedException {
+        LOG.debug("{}: Initializing current: {}", this, id);
+
+        try {
+            final Optional<O> operational = readCurrent(id, ctx);
+            if (operational.isPresent()) {
+                final Initialized<? extends DataObject> init =
+                        ((InitializingReaderCustomizer<O, B>) customizer).init(id, operational.get(), ctx);
+                LOG.debug("{}: Writing init config : {} at: {}", GenericInitReader.this, init.getData(), init.getId());
+                writeInit(broker, init);
+            }
+        } catch (ReadFailedException e) {
+            LOG.warn("{}: Failed to initialize current, unable to read: {}", this, id, e);
+            throw new InitFailedException(e.getFailedId(), e);
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    static void writeInit(final DataBroker broker, final Initialized<? extends DataObject> init) {
+        final WriteTransaction writeTx = broker.newWriteOnlyTransaction();
+        writeTx.merge(CONFIGURATION, (InstanceIdentifier) init.getId(), init.getData(), true);
+        writeTx.submit();
+    }
+}