2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright © 2021 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 * ============LICENSE_END=========================================================
20 package org.o.ran.oam.nf.oam.adopter.pm.rest.manager;
22 import java.time.Duration;
23 import java.time.LocalTime;
24 import java.time.ZoneId;
25 import java.time.ZonedDateTime;
26 import java.time.format.DateTimeFormatter;
27 import java.util.concurrent.Executors;
28 import java.util.concurrent.ScheduledExecutorService;
29 import java.util.concurrent.TimeUnit;
31 public final class PerformanceManagementRestAgent implements AutoCloseable {
33 private static final DateTimeFormatter TIME_INPUT_FORMAT = DateTimeFormatter.ofPattern("HH:mm:ss");
34 private final ScheduledExecutorService scheduler;
35 private final Runnable pmAgent;
36 private final LocalTime synchronizationTimeStart;
37 private final int synchronizationTimeFrequency;
38 private final ZoneId zoneId;
41 PerformanceManagementRestAgent(final Runnable pmAgent, final String synchronizationTimeStart,
42 final int synchronizationTimeFrequency, final ZoneId zoneId) {
43 this.scheduler = Executors.newSingleThreadScheduledExecutor();
44 this.pmAgent = pmAgent;
45 this.synchronizationTimeStart = LocalTime.parse(synchronizationTimeStart, TIME_INPUT_FORMAT);
46 this.synchronizationTimeFrequency = synchronizationTimeFrequency;
51 * Initialize service at fixed rate.
54 final long initialDelay = initialDelay();
55 scheduler.scheduleAtFixedRate(pmAgent, initialDelay, synchronizationTimeFrequency, TimeUnit.SECONDS);
58 private long initialDelay() {
59 final ZonedDateTime now = ZonedDateTime.now(zoneId);
61 ZonedDateTime nextRun = now
62 .withHour(synchronizationTimeStart.getHour())
63 .withMinute(synchronizationTimeStart.getMinute())
64 .withSecond(synchronizationTimeStart.getSecond());
65 if (now.compareTo(nextRun) > 0) {
66 nextRun = nextRun.plusSeconds(synchronizationTimeFrequency);
68 final Duration duration = Duration.between(now, nextRun);
69 return duration.getSeconds();
72 public ZoneId getTimeZone() {