2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.apex.service.engine.event.impl.filecarrierplugin;
23 import org.onap.policy.apex.service.engine.event.impl.filecarrierplugin.consumer.ApexFileEventConsumer;
24 import org.onap.policy.apex.service.engine.event.impl.filecarrierplugin.producer.ApexFileEventProducer;
25 import org.onap.policy.apex.service.parameters.carriertechnology.CarrierTechnologyParameters;
26 import org.onap.policy.common.utils.resources.ResourceUtils;
29 * This class holds the parameters that allows transport of events into and out of Apex using files
30 * and standard input and output.
33 * The following parameters are defined:
35 * <li>fileName: The full path to the file from which to read events or to which to write events.
36 * <li>standardIO: If this flag is set to true, then standard input is used to read events in or
37 * standard output is used to write events and the fileName parameter is ignored if present
38 * <li>standardError: If this flag is set to true, then standard error is used to write events
39 * <li>streamingMode: If this flag is set to true, then streaming mode is set for reading events and
40 * event handling will wait on the input stream for events until the stream is closed. If streaming
41 * model is off, then event reading completes when the end of input is detected.
42 * <li>startDelay: The amount of milliseconds to wait at startup startup before processing the first
46 * @author Liam Fallon (liam.fallon@ericsson.com)
48 public class FILECarrierTechnologyParameters extends CarrierTechnologyParameters {
50 /** The label of this carrier technology. */
51 public static final String FILE_CARRIER_TECHNOLOGY_LABEL = "FILE";
53 /** The producer plugin class for the FILE carrier technology. */
54 public static final String FILE_EVENT_PRODUCER_PLUGIN_CLASS = ApexFileEventProducer.class.getCanonicalName();
56 /** The consumer plugin class for the FILE carrier technology. */
57 public static final String FILE_EVENT_CONSUMER_PLUGIN_CLASS = ApexFileEventConsumer.class.getCanonicalName();
59 private String fileName;
60 private boolean standardIO = false;
61 private boolean standardError = false;
62 private boolean streamingMode = false;
63 private long startDelay = 0;
67 * Constructor to create a file carrier technology parameters instance and register the instance
68 * with the parameter service.
70 public FILECarrierTechnologyParameters() {
71 super(FILECarrierTechnologyParameters.class.getCanonicalName());
73 // Set the carrier technology properties for the FILE carrier technology
74 this.setLabel(FILE_CARRIER_TECHNOLOGY_LABEL);
75 this.setEventProducerPluginClass(FILE_EVENT_PRODUCER_PLUGIN_CLASS);
76 this.setEventConsumerPluginClass(FILE_EVENT_CONSUMER_PLUGIN_CLASS);
80 * Gets the file name from which to read or to which to write events.
82 * @return the file name from which to read or to which to write events
84 public String getFileName() {
85 return ResourceUtils.getFilePath4Resource(fileName);
89 * Checks if is standard IO should be used for input or output.
91 * @return true, if standard IO should be used for input or output
93 public boolean isStandardIO() {
98 * Checks if is standard error should be used for output.
100 * @return true, if standard error should be used for output
102 public boolean isStandardError() {
103 return standardError;
107 * Checks if is streaming mode is on.
109 * @return true, if streaming mode is on
111 public boolean isStreamingMode() {
112 return streamingMode;
116 * Sets the file name from which to read or to which to write events.
118 * @param fileName the file name from which to read or to which to write events
120 public void setFileName(final String fileName) {
121 this.fileName = fileName;
125 * Sets if standard IO should be used for event input or output.
127 * @param standardIO if standard IO should be used for event input or output
129 public void setStandardIO(final boolean standardIO) {
130 this.standardIO = standardIO;
134 * Sets if standard error should be used for event output.
136 * @param standardError if standard error should be used for event output
138 public void setStandardError(final boolean standardError) {
139 this.standardError = standardError;
143 * Sets streaming mode.
145 * @param streamingMode the streaming mode value
147 public void setStreamingMode(final boolean streamingMode) {
148 this.streamingMode = streamingMode;
152 * Gets the delay in milliseconds before the plugin starts processing
156 public long getStartDelay() {
161 * Sets the delay in milliseconds before the plugin starts processing
163 * @param startDelay the delay
165 public void setStartDelay(final long startDelay) {
166 this.startDelay = startDelay;
172 * @see org.onap.policy.apex.service.parameters.carriertechnology.CarrierTechnologyParameters#
176 public String toString() {
177 return "FILECarrierTechnologyParameters [fileName=" + fileName + ", standardIO=" + standardIO
178 + ", standardError=" + standardError + ", streamingMode=" + streamingMode + ", startDelay=" + startDelay
185 * @see org.onap.policy.apex.apps.uservice.parameters.ApexParameterValidator#validate()
188 public String validate() {
189 final StringBuilder errorMessageBuilder = new StringBuilder();
191 errorMessageBuilder.append(super.validate());
193 if (!standardIO && !standardError && (fileName == null || fileName.trim().length() == 0)) {
194 errorMessageBuilder.append(
195 " fileName not specified or is blank or null, it must be specified as a valid file location\n");
198 if (standardIO || standardError) {
199 streamingMode = true;
202 if (startDelay < 0) {
203 errorMessageBuilder.append(" startDelay must be zero or a positive number of milliseconds\n");
206 return errorMessageBuilder.toString();