Github user kchilton2 commented on a diff in the pull request:
https://github.com/apache/incubator-rya/pull/296#discussion_r187727065
--- Diff:
extras/kafka.connect/accumulo/src/main/java/org/apache/rya/kafka/connect/accumulo/AccumuloRyaSinkTask.java
---
@@ -0,0 +1,111 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.rya.kafka.connect.accumulo;
+
+import static java.util.Objects.requireNonNull;
+
+import java.util.Map;
+
+import org.apache.accumulo.core.client.AccumuloException;
+import org.apache.accumulo.core.client.AccumuloSecurityException;
+import org.apache.accumulo.core.client.Connector;
+import org.apache.accumulo.core.client.Instance;
+import org.apache.accumulo.core.client.ZooKeeperInstance;
+import org.apache.accumulo.core.client.security.tokens.PasswordToken;
+import org.apache.kafka.connect.errors.ConnectException;
+import org.apache.rya.accumulo.AccumuloRdfConfiguration;
+import org.apache.rya.api.client.RyaClient;
+import org.apache.rya.api.client.RyaClientException;
+import org.apache.rya.api.client.accumulo.AccumuloConnectionDetails;
+import org.apache.rya.api.client.accumulo.AccumuloRyaClientFactory;
+import org.apache.rya.api.persist.RyaDAOException;
+import org.apache.rya.kafka.connect.api.sink.RyaSinkTask;
+import org.apache.rya.rdftriplestore.inference.InferenceEngineException;
+import org.apache.rya.sail.config.RyaSailFactory;
+import org.eclipse.rdf4j.sail.Sail;
+import org.eclipse.rdf4j.sail.SailException;
+
+import edu.umd.cs.findbugs.annotations.DefaultAnnotation;
+import edu.umd.cs.findbugs.annotations.NonNull;
+
+/**
+ * A {@link RyaSinkTask} that uses the Accumulo implementation of Rya to
store data.
+ */
+@DefaultAnnotation(NonNull.class)
+public class AccumuloRyaSinkTask extends RyaSinkTask {
+
+ @Override
+ protected void checkRyaInstanceExists(final Map<String, String>
taskConfig) throws ConnectException {
+ requireNonNull(taskConfig);
+
+ // Parse the configuration object.
+ final AccumuloRyaSinkConfig config = new
AccumuloRyaSinkConfig(taskConfig);
+
+ // Connect to the instance of Accumulo.
+ final Connector connector;
+ try {
+ final Instance instance = new
ZooKeeperInstance(config.getClusterName(), config.getZookeepers());
+ connector = instance.getConnector(config.getUsername(), new
PasswordToken( config.getPassword() ));
+ } catch (AccumuloException | AccumuloSecurityException e) {
+ throw new ConnectException("Could not create a Connector to
the configured Accumulo instance.", e);
+ }
+
+ // Use a RyaClient to see if the configured instance exists.
+ try {
+ final AccumuloConnectionDetails connectionDetails = new
AccumuloConnectionDetails(
+ config.getUsername(),
+ config.getPassword().toCharArray(),
+ config.getClusterName(),
+ config.getZookeepers());
+ final RyaClient client =
AccumuloRyaClientFactory.build(connectionDetails, connector);
+
+ if(!client.getInstanceExists().exists(
config.getRyaInstanceName() )) {
+ throw new ConnectException("The Rya Instance named " +
+ config.getRyaInstanceName() + " has not been
installed.");
+ }
+
+ } catch (final RyaClientException e) {
+ throw new ConnectException("Unable to determine if the Rya
Instance named " +
+ config.getRyaInstanceName() + " has been installed.",
e);
+ }
+ }
+
+ @Override
+ protected Sail makeSail(final Map<String, String> taskConfig) throws
ConnectException {
+ requireNonNull(taskConfig);
+
+ // Parse the configuration object.
+ final AccumuloRyaSinkConfig config = new
AccumuloRyaSinkConfig(taskConfig);
+
+ // Move the configuration into a Rya Configuration object.
+ final AccumuloRdfConfiguration ryaConfig = new
AccumuloRdfConfiguration();
+ ryaConfig.setTablePrefix( config.getRyaInstanceName() );
+ ryaConfig.setAccumuloZookeepers( config.getZookeepers() );
+ ryaConfig.setAccumuloInstance( config.getClusterName() );
+ ryaConfig.setAccumuloUser( config.getUsername() );
+ ryaConfig.setAccumuloPassword( config.getPassword() );
+
+ // Create the Sail object.
+ try {
+ return RyaSailFactory.getInstance(ryaConfig);
--- End diff --
I'll add that to the future work section of the manual.
---
