| /* |
| * 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.elasticsearch; |
| |
| import org.apache.nifi.components.PropertyDescriptor; |
| import org.apache.nifi.components.ValidationContext; |
| import org.apache.nifi.components.ValidationResult; |
| import org.apache.nifi.expression.ExpressionLanguageScope; |
| import org.apache.nifi.processor.AbstractProcessor; |
| import org.apache.nifi.processor.ProcessContext; |
| import org.apache.nifi.processor.exception.ProcessException; |
| import org.apache.nifi.processor.util.StandardValidators; |
| import org.apache.nifi.ssl.SSLContextService; |
| import org.apache.nifi.util.StringUtils; |
| |
| import java.util.Collection; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * A base class for all Elasticsearch processors |
| */ |
| abstract class AbstractElasticsearch5Processor extends AbstractProcessor { |
| |
| public static final PropertyDescriptor PROP_SSL_CONTEXT_SERVICE = new PropertyDescriptor.Builder() |
| .name("el5-ssl-context-service") |
| .displayName("SSL Context Service") |
| .description("The SSL Context Service used to provide client certificate information for TLS/SSL " |
| + "connections. This service only applies if the Elasticsearch endpoint(s) have been secured with TLS/SSL.") |
| .required(false) |
| .identifiesControllerService(SSLContextService.class) |
| .build(); |
| |
| protected static final PropertyDescriptor CHARSET = new PropertyDescriptor.Builder() |
| .name("el5-charset") |
| .displayName("Character Set") |
| .description("Specifies the character set of the document data.") |
| .required(true) |
| .defaultValue("UTF-8") |
| .addValidator(StandardValidators.CHARACTER_SET_VALIDATOR) |
| .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) |
| .build(); |
| |
| public static final PropertyDescriptor USERNAME = new PropertyDescriptor.Builder() |
| .name("el5-username") |
| .displayName("Username") |
| .description("Username to access the Elasticsearch cluster") |
| .required(false) |
| .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) |
| .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY) |
| .build(); |
| |
| public static final PropertyDescriptor PASSWORD = new PropertyDescriptor.Builder() |
| .name("el5-password") |
| .displayName("Password") |
| .description("Password to access the Elasticsearch cluster") |
| .required(false) |
| .sensitive(true) |
| .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) |
| .build(); |
| |
| protected abstract void createElasticsearchClient(ProcessContext context) throws ProcessException; |
| |
| @Override |
| protected Collection<ValidationResult> customValidate(ValidationContext validationContext) { |
| Set<ValidationResult> results = new HashSet<>(); |
| |
| // Ensure that if username or password is set, then the other is too |
| String userName = validationContext.getProperty(USERNAME).evaluateAttributeExpressions().getValue(); |
| String password = validationContext.getProperty(PASSWORD).evaluateAttributeExpressions().getValue(); |
| if (StringUtils.isEmpty(userName) != StringUtils.isEmpty(password)) { |
| results.add(new ValidationResult.Builder().valid(false).explanation( |
| "If username or password is specified, then the other must be specified as well").build()); |
| } |
| |
| return results; |
| } |
| |
| public void setup(ProcessContext context) { |
| // Create the client if one does not already exist |
| createElasticsearchClient(context); |
| } |
| |
| } |