| /* |
| * 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.processor.util.listen; |
| |
| import org.apache.nifi.components.PropertyDescriptor; |
| import org.apache.nifi.components.ValidationContext; |
| import org.apache.nifi.components.ValidationResult; |
| import org.apache.nifi.components.Validator; |
| import org.apache.nifi.expression.AttributeExpression; |
| import org.apache.nifi.expression.ExpressionLanguageScope; |
| import org.apache.nifi.processor.util.StandardValidators; |
| |
| import java.net.NetworkInterface; |
| import java.net.SocketException; |
| import java.util.Enumeration; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * Shared properties. |
| */ |
| public class ListenerProperties { |
| |
| private static final Set<String> interfaceSet = new HashSet<>(); |
| |
| static { |
| try { |
| final Enumeration<NetworkInterface> interfaceEnum = NetworkInterface.getNetworkInterfaces(); |
| while (interfaceEnum.hasMoreElements()) { |
| final NetworkInterface ifc = interfaceEnum.nextElement(); |
| interfaceSet.add(ifc.getName()); |
| } |
| } catch (SocketException e) { |
| } |
| } |
| |
| public static final PropertyDescriptor NETWORK_INTF_NAME = new PropertyDescriptor.Builder() |
| .name("Local Network Interface") |
| .description("The name of a local network interface to be used to restrict listening to a specific LAN.") |
| .addValidator(new Validator() { |
| @Override |
| public ValidationResult validate(String subject, String input, ValidationContext context) { |
| ValidationResult result = new ValidationResult.Builder() |
| .subject("Local Network Interface").valid(true).input(input).build(); |
| if (interfaceSet.contains(input.toLowerCase())) { |
| return result; |
| } |
| |
| String message; |
| String realValue = input; |
| try { |
| if (context.isExpressionLanguagePresent(input)) { |
| AttributeExpression ae = context.newExpressionLanguageCompiler().compile(input); |
| realValue = ae.evaluate(); |
| } |
| |
| if (interfaceSet.contains(realValue.toLowerCase())) { |
| return result; |
| } |
| |
| message = realValue + " is not a valid network name. Valid names are " + interfaceSet.toString(); |
| |
| } catch (IllegalArgumentException e) { |
| message = "Not a valid AttributeExpression: " + e.getMessage(); |
| } |
| result = new ValidationResult.Builder().subject("Local Network Interface") |
| .valid(false).input(input).explanation(message).build(); |
| |
| return result; |
| } |
| }) |
| .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY) |
| .build(); |
| |
| public static final PropertyDescriptor PORT = new PropertyDescriptor |
| .Builder().name("Port") |
| .description("The port to listen on for communication.") |
| .required(true) |
| .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY) |
| .addValidator(StandardValidators.PORT_VALIDATOR) |
| .build(); |
| public static final PropertyDescriptor CHARSET = new PropertyDescriptor.Builder() |
| .name("Character Set") |
| .description("Specifies the character set of the received data.") |
| .required(true) |
| .defaultValue("UTF-8") |
| .addValidator(StandardValidators.CHARACTER_SET_VALIDATOR) |
| .build(); |
| public static final PropertyDescriptor RECV_BUFFER_SIZE = new PropertyDescriptor.Builder() |
| .name("Receive Buffer Size") |
| .description("The size of each buffer used to receive messages. Adjust this value appropriately based on the expected size of the " + |
| "incoming messages.") |
| .addValidator(StandardValidators.DATA_SIZE_VALIDATOR) |
| .defaultValue("65507 B") |
| .required(true) |
| .build(); |
| public static final PropertyDescriptor MAX_SOCKET_BUFFER_SIZE = new PropertyDescriptor.Builder() |
| .name("Max Size of Socket Buffer") |
| .description("The maximum size of the socket buffer that should be used. This is a suggestion to the Operating System " + |
| "to indicate how big the socket buffer should be. If this value is set too low, the buffer may fill up before " + |
| "the data can be read, and incoming data will be dropped.") |
| .addValidator(StandardValidators.DATA_SIZE_VALIDATOR) |
| .defaultValue("1 MB") |
| .required(true) |
| .build(); |
| public static final PropertyDescriptor MAX_MESSAGE_QUEUE_SIZE = new PropertyDescriptor.Builder() |
| .name("Max Size of Message Queue") |
| .description("The maximum size of the internal queue used to buffer messages being transferred from the underlying channel to the processor. " + |
| "Setting this value higher allows more messages to be buffered in memory during surges of incoming messages, but increases the total " + |
| "memory used by the processor during these surges.") |
| .addValidator(StandardValidators.POSITIVE_INTEGER_VALIDATOR) |
| .defaultValue("10000") |
| .required(true) |
| .build(); |
| public static final PropertyDescriptor MAX_CONNECTIONS = new PropertyDescriptor.Builder() |
| .name("Max Number of TCP Connections") |
| .description("The maximum number of concurrent TCP connections to accept.") |
| .addValidator(StandardValidators.createLongValidator(1, 65535, true)) |
| .defaultValue("2") |
| .required(true) |
| .build(); |
| public static final PropertyDescriptor MAX_BATCH_SIZE = new PropertyDescriptor.Builder() |
| .name("Max Batch Size") |
| .description( |
| "The maximum number of messages to add to a single FlowFile. If multiple messages are available, they will be concatenated along with " |
| + "the <Message Delimiter> up to this configured maximum number of messages") |
| .addValidator(StandardValidators.POSITIVE_INTEGER_VALIDATOR) |
| .expressionLanguageSupported(ExpressionLanguageScope.NONE) |
| .defaultValue("1") |
| .required(true) |
| .build(); |
| public static final PropertyDescriptor MESSAGE_DELIMITER = new PropertyDescriptor.Builder() |
| .name("Message Delimiter") |
| .displayName("Batching Message Delimiter") |
| .description("Specifies the delimiter to place between messages when multiple messages are bundled together (see <Max Batch Size> property).") |
| .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) |
| .defaultValue("\\n") |
| .required(true) |
| .build(); |
| |
| } |