2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * Copyright (C) 2017 Amdocs
7 * ================================================================================
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 * ============LICENSE_END=========================================================
20 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
25 package org.openecomp.appc.adapter.restHealthcheck.impl;
27 import org.openecomp.appc.Constants;
28 import org.openecomp.appc.configuration.Configuration;
29 import org.openecomp.sdnc.sli.SvcLogicContext;
31 public class RequestContext {
33 * The number of seconds of wait time between successive attempts to connect to the provider. This is used to
34 * recover from provider outages or failures. It is not used to recover from logical errors, such as an invalid
35 * request, server not found, etc.
37 private Integer retryDelay;
40 * The number of times we will attempt to connect to the provider. This is used to recover from provider outages or
41 * failures. It is not used to recover from logical errors, such as an invalid request, server not found, etc.
43 private Integer retryLimit;
46 * The total time, in milliseconds, that the provider can have to process this request. If the accumulated time
47 * exceeds the time to live, then the request is failed with a timeout exception, regardless of the state of the
48 * provider. Note that the caller may supply this as a value in seconds, in which case it must be converted to
49 * milliseconds for the request context.
51 private Long timeToLive;
54 * The accumulated time, in milliseconds, that has been used so far to process the request. This is compared to the
55 * time to live each time it is updated. If the accumulated time exceeds the time to live, then the request is
56 * failed with a timeout exception, regardless of the state of the provider.
58 private long accumulatedTime;
61 * The total number of retries attempted so far
66 * The time when the stopwatch was started
68 private long startTime = -1;
71 * The service logic (DG) context from the SLI
73 private SvcLogicContext svcLogicContext;
81 * Set to true whenever the retry limit has been exceeded, reset to false when reset() is called.
83 private boolean retryFailed;
86 * Creates the request context
89 * The service logic (SLI) context associated with the current DG
91 public RequestContext(SvcLogicContext context) {
92 setSvcLogicContext(context);
96 * @return The retry delay, in seconds. If zero, then no retry is to be performed
98 public int getRetryDelay() {
99 if (retryDelay == null) {
101 retryDelay = Integer.valueOf(value);
104 return retryDelay.intValue();
108 * This method is a helper that allows the caller to delay for the retry interval time and not have to handle the
109 * thread interruption, timer handling, etc.
111 public void delay() {
112 long time = getRetryDelay() * 1000L;
113 long future = System.currentTimeMillis() + time;
115 while (System.currentTimeMillis() < future && time > 0) {
118 } catch (InterruptedException e) {
120 * This is rare, but it can happen if another thread interrupts us while we are sleeping. In that
121 * case, the thread is resumed before the delay time has actually expired, so re-calculate the
122 * amount of delay time needed and reenter the sleep until we get to the future time.
124 time = future - System.currentTimeMillis();
131 * @return The number of retries that are allowed per connection
133 public int getRetryLimit() {
134 if (retryLimit == null) {
136 retryLimit = Integer.valueOf(value);
139 return retryLimit.intValue();
143 * Check and count the connection attempt.
145 * @return True if the connection should be attempted. False indicates that the number of retries has been exhausted
146 * and it should NOT be attempted.
148 public boolean attempt() {
149 if (retryFailed || attempt >= getRetryLimit()) {
159 * @return The number of retry attempts so far
161 public int getAttempts() {
166 * @return True if the retry limit has been exceeded, false otherwise
168 public boolean isFailed() {
173 * This method both checks the time to live to see if it has been exceeded and accumulates the total time used so
176 * Each time this method is called it accumulates the total duration since the last time it was called to the total
177 * time accumulator. It then checks the total time to the time to live and if greater, it returns false. As long as
178 * the total time used is less than or equal to the time to live limit, the method returns true. It is important to
179 * call this method at the very beginning of the process so that all parts of the process are tracked.
182 * @return True if the total time to live has not been exceeded. False indicates that the total time to live has
183 * been exceeded and no further processing should be performed.
185 public boolean isAlive() {
186 long now = System.currentTimeMillis();
187 if (startTime == -1) {
191 accumulatedTime += (now - startTime);
193 if (accumulatedTime > timeToLive) {
200 * @return The total amount of time used, in milliseconds.
202 public long getTotalDuration() {
203 return accumulatedTime;
207 * This method is called to reset the retry counters. It has no effect on the time to live accumulator.
209 public void reset() {
214 * Sets the time to live to the value, expressed in seconds
217 * The time to live, in seconds
219 public void setTimeToLiveSeconds(int time) {
220 setTimeToLiveMS(time * 1000L);
224 * Sets the time to live to the value, expressed in milliseconds
227 * The time to live, in milliseconds
229 public void setTimeToLiveMS(long time) {
230 this.timeToLive = time;
234 * @return The service logic context associated with this request
236 public SvcLogicContext getSvcLogicContext() {
237 return svcLogicContext;
241 * @param svcLogicContext
242 * The service logic context to be associated with this request
244 public void setSvcLogicContext(SvcLogicContext svcLogicContext) {
245 this.svcLogicContext = svcLogicContext;