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12-21-2018
02:30 PM
Nifi throwing below error on startup: java.util.ServiceConfigurationError: org.apache.nifi.processor.Processor: Provider org.apache.nifi.processors.standard.CalculateRecordStats could not be instantiated at java.util.ServiceLoader.fail(ServiceLoader.java:232) at java.util.ServiceLoader.access$100(ServiceLoader.java:185) at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:384) at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404) at java.util.ServiceLoader$1.next(ServiceLoader.java:480) at org.apache.nifi.nar.ExtensionManager.loadExtensions(ExtensionManager.java:148) at org.apache.nifi.nar.ExtensionManager.discoverExtensions(ExtensionManager.java:123) at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:838) at org.apache.nifi.NiFi.<init>(NiFi.java:157) at org.apache.nifi.NiFi.<init>(NiFi.java:71) at org.apache.nifi.NiFi.main(NiFi.java:296) Caused by: java.lang.NoClassDefFoundError: org/apache/nifi/serialization/RecordReaderFactory at org.apache.nifi.processors.standard.CalculateRecordStats.<clinit>(CalculateRecordStats.java:72) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at java.lang.Class.newInstance(Class.java:442) at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:380) ... 8 common frames omitted Caused by: java.lang.ClassNotFoundException: org.apache.nifi.serialization.RecordReaderFactory at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 15 common frames omitted Below is my pom.xml <?xml version="1.0" encoding="UTF-8"?>
<!--
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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.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>user-dimension-processor</groupId>
<artifactId>user-dimension-artifactId</artifactId>
<version>1.0</version>
</parent>
<artifactId>nifi-user-dimension-processors</artifactId>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-api</artifactId>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-utils</artifactId>
<version>1.8.0</version>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-mock</artifactId>
<version>1.8.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.bazaarvoice.jolt</groupId>
<artifactId>json-utils</artifactId>
<version>0.1.1</version>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20180813</version>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-standard-processors</artifactId>
<version>1.8.0</version>
</dependency>
<dependency>
<groupId>org.apache.parquet</groupId>
<artifactId>parquet-avro</artifactId>
<version>1.10.0</version>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-record</artifactId>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-record-serialization-service-api</artifactId>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-dbcp-service</artifactId>
<version>1.8.0</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-dbcp-service-api</artifactId>
<version>1.8.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-expression-language</artifactId>
<version>1.8.0</version>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-processor-utils</artifactId>
<version>1.8.0</version>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-record-serialization-service-api</artifactId>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-record-serialization-services</artifactId>
<version>1.2.0</version>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-ssl-context-service-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<version>1.2.0</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.5.0</version>
</dependency>
</dependencies>
</project>
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12-13-2018
09:17 AM
you are correct all the UI component calls REST API however to call most of the REST API we need to pass the id to same. When we create everything from java code base we will not have any such id which was getting generated in case of UI,how I can do everything from my own custom java program without having any UI.
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12-11-2018
05:27 PM
I want to use Nifi without UI . As using UI we can set all the property value in UI and same will be passed to onTrigger with all the values in ProcessContext. How I can assign the value to Property without UI and pass to onTrigger using ProcessContext. Like all the value we can provide to ExecuteSQLRecord processor in UI which will be set to ProcessContext,how same can be achieved without UI.
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12-10-2018
09:21 PM
I want to write my own code which will run Nifi processor from a java class ,how I can create set ProcessContext value and pass to onTrigger method ? I didn’t find any settermethod for ProcessContext class methods .
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