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/*
* ============LICENSE_START=======================================================
* PNF-REGISTRATION-HANDLER
* ================================================================================ Copyright (C)
* 2018 NOKIA Intellectual Property. All rights reserved.
* ================================================================================ Licensed 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. ============LICENSE_END=========================================================
*/
package org.onap.pnfsimulator.simulator;
import java.time.Duration;
import java.time.Instant;
import java.util.Map;
import org.json.JSONObject;
import org.onap.pnfsimulator.simulator.client.HttpClientAdapter;
import org.onap.pnfsimulator.simulator.client.HttpClientAdapterImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;
public class Simulator extends Thread {
private static final Logger LOGGER = LoggerFactory.getLogger(Simulator.class);
private final Marker EXIT = MarkerFactory.getMarker("EXIT");
private Map<String, String> contextMap = MDC.getCopyOfContextMap();
private boolean isEndless;
private String vesUrl;
private HttpClientAdapter httpClient;
private JSONObject messageBody;
private Duration duration;
private Duration interval;
private Instant endTime;
private Simulator() {}
public static Builder builder() {
return new Builder();
}
@Override
public void run() {
setMdcContextMap(contextMap);
LOGGER.info("Simulation started - duration: {}, interval: {}s", getDuration(), interval.getSeconds());
endTime = Instant.now().plus(duration);
while (isEndless || runningTimeNotExceeded()) {
try {
LOGGER.info("Message to be sent:\n" + getMessage());
httpClient.send(messageBody.toString(), vesUrl);
Thread.sleep(interval.toMillis());
} catch (InterruptedException e) {
LOGGER.info("Simulation interrupted");
return;
}
}
LOGGER.info(EXIT, "Simulation finished");
MDC.clear();
}
private void setMdcContextMap(Map<String, String> mdcContextMap) {
if (mdcContextMap != null)
MDC.setContextMap(mdcContextMap);
}
private String getMessage() {
return messageBody.toString(4);
}
private String getDuration() {
return isEndless() ? "infinity" : duration.getSeconds() + "s";
}
private boolean runningTimeNotExceeded() {
return Instant.now().isBefore(endTime);
}
public boolean isEndless() {
return isEndless;
}
public long getRemainingTime() {
return Duration.between(Instant.now(), endTime).getSeconds();
}
public static class Builder {
private String vesUrl;
private HttpClientAdapter httpClient;
private JSONObject messageBody;
private Duration duration;
private Duration interval;
private Builder() {
this.vesUrl = "";
this.httpClient = new HttpClientAdapterImpl();
this.messageBody = new JSONObject();
this.duration = Duration.ZERO;
this.interval = Duration.ZERO;
}
public Builder withVesUrl(String vesUrl) {
this.vesUrl = vesUrl;
return this;
}
public Builder withCustomHttpClientAdapter(HttpClientAdapter httpClient) {
this.httpClient = httpClient;
return this;
}
public Builder withMessageBody(JSONObject messageBody) {
this.messageBody = messageBody;
return this;
}
public Builder withDuration(Duration duration) {
this.duration = duration;
return this;
}
public Builder withInterval(Duration interval) {
this.interval = interval;
return this;
}
public Simulator build() {
Simulator simulator = new Simulator();
simulator.vesUrl = this.vesUrl;
simulator.httpClient = this.httpClient;
simulator.messageBody = this.messageBody;
simulator.duration = this.duration;
simulator.interval = this.interval;
simulator.isEndless = duration.equals(Duration.ZERO);
return simulator;
}
}
}
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