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.
32 * <p>The following parameters are defined:
34 * <li>fileName: The full path to the file from which to read events or to which to write events.
35 * <li>standardIO: If this flag is set to true, then standard input is used to read events in or
36 * standard output is used to write events and the fileName parameter is ignored if present
37 * <li>standardError: If this flag is set to true, then standard error is used to write events
38 * <li>streamingMode: If this flag is set to true, then streaming mode is set for reading events and
39 * event handling will wait on the input stream for events until the stream is closed. If streaming
40 * model is off, then event reading completes when the end of input is detected.
41 * <li>startDelay: The amount of milliseconds to wait at startup startup before processing the first
45 * @author Liam Fallon (liam.fallon@ericsson.com)
47 public class FILECarrierTechnologyParameters extends CarrierTechnologyParameters {
49 /** The label of this carrier technology. */
50 public static final String FILE_CARRIER_TECHNOLOGY_LABEL = "FILE";
52 /** The producer plugin class for the FILE carrier technology. */
53 public static final String FILE_EVENT_PRODUCER_PLUGIN_CLASS = ApexFileEventProducer.class.getCanonicalName();
55 /** The consumer plugin class for the FILE carrier technology. */
56 public static final String FILE_EVENT_CONSUMER_PLUGIN_CLASS = ApexFileEventConsumer.class.getCanonicalName();
58 private String fileName;
59 private boolean standardIO = false;
60 private boolean standardError = false;
61 private boolean streamingMode = false;
62 private long startDelay = 0;
66 * Constructor to create a file carrier technology parameters instance and register the instance
67 * with the parameter service.
69 public FILECarrierTechnologyParameters() {
70 super(FILECarrierTechnologyParameters.class.getCanonicalName());
72 // Set the carrier technology properties for the FILE carrier technology
73 this.setLabel(FILE_CARRIER_TECHNOLOGY_LABEL);
74 this.setEventProducerPluginClass(FILE_EVENT_PRODUCER_PLUGIN_CLASS);
75 this.setEventConsumerPluginClass(FILE_EVENT_CONSUMER_PLUGIN_CLASS);
79 * Gets the file name from which to read or to which to write events.
81 * @return the file name from which to read or to which to write events
83 public String getFileName() {
84 return ResourceUtils.getFilePath4Resource(fileName);
88 * Checks if is standard IO should be used for input or output.
90 * @return true, if standard IO should be used for input or output
92 public boolean isStandardIO() {
97 * Checks if is standard error should be used for output.
99 * @return true, if standard error should be used for output
101 public boolean isStandardError() {
102 return standardError;
106 * Checks if is streaming mode is on.
108 * @return true, if streaming mode is on
110 public boolean isStreamingMode() {
111 return streamingMode;
115 * Sets the file name from which to read or to which to write events.
117 * @param fileName the file name from which to read or to which to write events
119 public void setFileName(final String fileName) {
120 this.fileName = fileName;
124 * Sets if standard IO should be used for event input or output.
126 * @param standardIO if standard IO should be used for event input or output
128 public void setStandardIO(final boolean standardIO) {
129 this.standardIO = standardIO;
133 * Sets if standard error should be used for event output.
135 * @param standardError if standard error should be used for event output
137 public void setStandardError(final boolean standardError) {
138 this.standardError = standardError;
142 * Sets streaming mode.
144 * @param streamingMode the streaming mode value
146 public void setStreamingMode(final boolean streamingMode) {
147 this.streamingMode = streamingMode;
151 * Gets the delay in milliseconds before the plugin starts processing.
155 public long getStartDelay() {
160 * Sets the delay in milliseconds before the plugin starts processing.
162 * @param startDelay the delay
164 public void setStartDelay(final long startDelay) {
165 this.startDelay = startDelay;
171 * @see org.onap.policy.apex.service.parameters.carriertechnology.CarrierTechnologyParameters#
175 public String toString() {
176 return "FILECarrierTechnologyParameters [fileName=" + fileName + ", standardIO=" + standardIO
177 + ", standardError=" + standardError + ", streamingMode=" + streamingMode + ", startDelay=" + startDelay
184 * @see org.onap.policy.apex.apps.uservice.parameters.ApexParameterValidator#validate()
187 public String validate() {
188 final StringBuilder errorMessageBuilder = new StringBuilder();
190 errorMessageBuilder.append(super.validate());
192 if (!standardIO && !standardError && (fileName == null || fileName.trim().length() == 0)) {
193 errorMessageBuilder.append(
194 " fileName not specified or is blank or null, it must be specified as a valid file location\n");
197 if (standardIO || standardError) {
198 streamingMode = true;
201 if (startDelay < 0) {
202 errorMessageBuilder.append(" startDelay must be zero or a positive number of milliseconds\n");
205 return errorMessageBuilder.toString();