| /* |
| * 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.hadoop; |
| |
| import org.apache.nifi.components.ValidationContext; |
| import org.apache.nifi.components.ValidationResult; |
| import org.apache.nifi.components.Validator; |
| |
| /** |
| * Validators for Hadoop related processors. |
| */ |
| public interface HadoopValidators { |
| |
| /* |
| * Validates that a property is a valid umask, i.e. a short octal number that is not negative. |
| */ |
| Validator UMASK_VALIDATOR = new Validator() { |
| @Override |
| public ValidationResult validate(final String subject, final String value, final ValidationContext context) { |
| String reason = null; |
| try { |
| final short shortVal = Short.parseShort(value, 8); |
| if (shortVal < 0) { |
| reason = "octal umask [" + value + "] cannot be negative"; |
| } else if (shortVal > 511) { |
| // HDFS umask has 9 bits: rwxrwxrwx ; the sticky bit cannot be umasked |
| reason = "octal umask [" + value + "] is not a valid umask"; |
| } |
| } catch (final NumberFormatException e) { |
| reason = "[" + value + "] is not a valid short octal number"; |
| } |
| return new ValidationResult.Builder().subject(subject).input(value).explanation(reason).valid(reason == null) |
| .build(); |
| } |
| }; |
| |
| /* |
| * Validates that a property is a valid short number greater than 0. |
| */ |
| Validator POSITIVE_SHORT_VALIDATOR = new Validator() { |
| @Override |
| public ValidationResult validate(final String subject, final String value, final ValidationContext context) { |
| String reason = null; |
| try { |
| final short shortVal = Short.parseShort(value); |
| if (shortVal <= 0) { |
| reason = "short integer must be greater than zero"; |
| } |
| } catch (final NumberFormatException e) { |
| reason = "[" + value + "] is not a valid short integer"; |
| } |
| return new ValidationResult.Builder().subject(subject).input(value).explanation(reason).valid(reason == null) |
| .build(); |
| } |
| }; |
| |
| } |