Github user pvillard31 commented on a diff in the pull request: https://github.com/apache/nifi/pull/721#discussion_r79868592 --- Diff: nifi-nar-bundles/nifi-ignite-bundle/nifi-ignite-processors/src/main/java/org/apache/nifi/processors/ignite/cache/GetIgniteCache.java --- @@ -0,0 +1,119 @@ +/* + * 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.nifi.processors.ignite.cache; + +import java.io.ByteArrayInputStream; +import java.util.ArrayList; +import java.util.List; + +import org.apache.commons.lang3.StringUtils; +import org.apache.nifi.annotation.behavior.EventDriven; +import org.apache.nifi.annotation.behavior.InputRequirement; +import org.apache.nifi.annotation.behavior.InputRequirement.Requirement; +import org.apache.nifi.annotation.behavior.SupportsBatching; +import org.apache.nifi.annotation.behavior.WritesAttribute; +import org.apache.nifi.annotation.behavior.WritesAttributes; +import org.apache.nifi.annotation.documentation.CapabilityDescription; +import org.apache.nifi.annotation.documentation.SeeAlso; +import org.apache.nifi.annotation.documentation.Tags; +import org.apache.nifi.annotation.lifecycle.OnScheduled; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.flowfile.FlowFile; +import org.apache.nifi.processor.ProcessContext; +import org.apache.nifi.processor.ProcessSession; +import org.apache.nifi.processor.exception.ProcessException; + +/** + * Get cache processors which gets byte array for the key from Ignite cache and set the array + * as the FlowFile content. + */ +@EventDriven +@SupportsBatching +@Tags({ "Ignite", "get", "read", "cache", "key" }) +@InputRequirement(Requirement.INPUT_REQUIRED) +@CapabilityDescription("Get the byte array from Ignite Cache and adds it as the content of a FlowFile." + + "The processor uses the value of FlowFile attribute (Ignite cache entry key) as the cache key lookup. " + + "If the entry corresponding to the key is not found in the cache an error message is associated with the FlowFile " + + "Note - The Ignite Kernel periodically outputs node performance statistics to the logs. This message " + + " can be turned off by setting the log level for logger 'org.apache.ignite' to WARN in the logback.xml configuration file.") +@WritesAttributes({ + @WritesAttribute(attribute = GetIgniteCache.IGNITE_GET_FAILED_REASON_ATTRIBUTE_KEY, description = "The reason for getting entry from cache"), + @WritesAttribute(attribute = GetIgniteCache.IGNITE_GET_FAILED_MISSING_KEY_MESSAGE, description = "The FlowFile key attribute was missing.") + }) +@SeeAlso({PutIgniteCache.class}) +public class GetIgniteCache extends AbstractIgniteCacheProcessor { + + /** Flow file attribute keys and messages */ + public static final String IGNITE_GET_FAILED_REASON_ATTRIBUTE_KEY = "ignite.cache.get.failed.reason"; + public static final String IGNITE_GET_FAILED_MISSING_KEY_MESSAGE = "The FlowFile key attribute was missing"; --- End diff -- Shouldn't it be a key and not a description (as you did with the other written attribute)?
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