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ASF GitHub Bot commented on NIFI-2565: -------------------------------------- Github user selim-namsi commented on a diff in the pull request: https://github.com/apache/nifi/pull/1108#discussion_r83720540 --- Diff: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/GrokParser.java --- @@ -0,0 +1,243 @@ +/* + * 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.standard; + +import com.fasterxml.jackson.databind.ObjectMapper; +import oi.thekraken.grok.api.Grok; +import oi.thekraken.grok.api.Match; +import oi.thekraken.grok.api.exception.GrokException; +import org.apache.nifi.annotation.behavior.ReadsAttribute; +import org.apache.nifi.annotation.behavior.ReadsAttributes; +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.attributes.CoreAttributes; +import org.apache.nifi.flowfile.FlowFile; + +import org.apache.nifi.processor.AbstractProcessor; +import org.apache.nifi.processor.DataUnit; +import org.apache.nifi.processor.ProcessorInitializationContext; +import org.apache.nifi.processor.Relationship; +import org.apache.nifi.processor.ProcessContext; +import org.apache.nifi.processor.ProcessSession; +import org.apache.nifi.processor.exception.ProcessException; +import org.apache.nifi.processor.io.InputStreamCallback; +import org.apache.nifi.processor.io.StreamCallback; +import org.apache.nifi.processor.util.StandardValidators; +import org.apache.nifi.stream.io.BufferedOutputStream; +import org.apache.nifi.stream.io.StreamUtils; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.nio.charset.Charset; +import java.util.List; +import java.util.Map; +import java.util.HashMap; +import java.util.Set; +import java.util.HashSet; +import java.util.ArrayList; +import java.util.Collections; + + +@Tags({"Grok Processor"}) +@CapabilityDescription("Use Grok expression ,a la logstash, to parse data.") +@SeeAlso({}) +@ReadsAttributes({@ReadsAttribute(attribute="", description="")}) +@WritesAttributes({@WritesAttribute(attribute="", description="")}) +public class GrokParser extends AbstractProcessor { + + + public static final String DESTINATION_ATTRIBUTE = "flowfile-attribute"; + public static final String DESTINATION_CONTENT = "flowfile-content"; + private static final String APPLICATION_JSON = "application/json"; + + public static final PropertyDescriptor GROK_EXPRESSION = new PropertyDescriptor + .Builder().name("Grok Expression") + .description("Grok expression") + .required(true) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .build(); + + public static final PropertyDescriptor GROK_PATTERN_FILE = new PropertyDescriptor + .Builder().name("Grok Pattern file") + .description("Grok Pattern file definition") + .required(false) + .addValidator(StandardValidators.FILE_EXISTS_VALIDATOR) + .build(); + + public static final PropertyDescriptor DESTINATION = new PropertyDescriptor.Builder() + .name("Destination") + .description("Control if Grok output value is written as a new flowfile attribute " + --- End diff -- @markap14 Actually what I meant is that the output will contain many new flowfile attributes : the attribute names will be the grok identifiers and the attributes values will be the matched values. If you are okay with this I'll update the description > NiFi processor to parse logs using Grok patterns > ------------------------------------------------ > > Key: NIFI-2565 > URL: https://issues.apache.org/jira/browse/NIFI-2565 > Project: Apache NiFi > Issue Type: Improvement > Reporter: Andre > Fix For: 1.1.0 > > > Following up on Ryan Ward to create a Grok capable parser > https://mail-archives.apache.org/mod_mbox/nifi-dev/201606.mbox/%3CCADD=rnPa8nHkJbeM280=PTQ=wurtwhstm5u+7btoo9pcym2...@mail.gmail.com%3E -- This message was sent by Atlassian JIRA (v6.3.4#6332)