2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights
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=========================================================
24 package org.openecomp.appc.adapter.restHealthcheck.impl;
26 import org.openecomp.appc.Constants;
27 import org.openecomp.appc.configuration.Configuration;
28 import org.openecomp.sdnc.sli.SvcLogicContext;
30 public class RequestContext {
32 * The number of seconds of wait time between successive attempts to connect to the provider. This is used to
33 * recover from provider outages or failures. It is not used to recover from logical errors, such as an invalid
34 * request, server not found, etc.
36 private Integer retryDelay;
39 * The number of times we will attempt to connect to the provider. This is used to recover from provider outages or
40 * failures. It is not used to recover from logical errors, such as an invalid request, server not found, etc.
42 private Integer retryLimit;
45 * The total time, in milliseconds, that the provider can have to process this request. If the accumulated time
46 * exceeds the time to live, then the request is failed with a timeout exception, regardless of the state of the
47 * provider. Note that the caller may supply this as a value in seconds, in which case it must be converted to
48 * milliseconds for the request context.
50 private Long timeToLive;
53 * The accumulated time, in milliseconds, that has been used so far to process the request. This is compared to the
54 * time to live each time it is updated. If the accumulated time exceeds the time to live, then the request is
55 * failed with a timeout exception, regardless of the state of the provider.
57 private long accumulatedTime;
60 * The total number of retries attempted so far
65 * The time when the stopwatch was started
67 private long startTime = -1;
70 * The service logic (DG) context from the SLI
72 private SvcLogicContext svcLogicContext;
80 * Set to true whenever the retry limit has been exceeded, reset to false when reset() is called.
82 private boolean retryFailed;
85 * Creates the request context
88 * The service logic (SLI) context associated with the current DG
90 public RequestContext(SvcLogicContext context) {
91 setSvcLogicContext(context);
95 * @return The retry delay, in seconds. If zero, then no retry is to be performed
97 public int getRetryDelay() {
98 if (retryDelay == null) {
100 retryDelay = Integer.valueOf(value);
103 return retryDelay.intValue();
107 * This method is a helper that allows the caller to delay for the retry interval time and not have to handle the
108 * thread interruption, timer handling, etc.
110 public void delay() {
111 long time = getRetryDelay() * 1000L;
112 long future = System.currentTimeMillis() + time;
114 while (System.currentTimeMillis() < future && time > 0) {
117 } catch (InterruptedException e) {
119 * This is rare, but it can happen if another thread interrupts us while we are sleeping. In that
120 * case, the thread is resumed before the delay time has actually expired, so re-calculate the
121 * amount of delay time needed and reenter the sleep until we get to the future time.
123 time = future - System.currentTimeMillis();
130 * @return The number of retries that are allowed per connection
132 public int getRetryLimit() {
133 if (retryLimit == null) {
135 retryLimit = Integer.valueOf(value);
138 return retryLimit.intValue();
142 * Check and count the connection attempt.
144 * @return True if the connection should be attempted. False indicates that the number of retries has been exhausted
145 * and it should NOT be attempted.
147 public boolean attempt() {
148 if (retryFailed || attempt >= getRetryLimit()) {
158 * @return The number of retry attempts so far
160 public int getAttempts() {
165 * @return True if the retry limit has been exceeded, false otherwise
167 public boolean isFailed() {
172 * This method both checks the time to live to see if it has been exceeded and accumulates the total time used so
175 * Each time this method is called it accumulates the total duration since the last time it was called to the total
176 * time accumulator. It then checks the total time to the time to live and if greater, it returns false. As long as
177 * the total time used is less than or equal to the time to live limit, the method returns true. It is important to
178 * call this method at the very beginning of the process so that all parts of the process are tracked.
181 * @return True if the total time to live has not been exceeded. False indicates that the total time to live has
182 * been exceeded and no further processing should be performed.
184 public boolean isAlive() {
185 long now = System.currentTimeMillis();
186 if (startTime == -1) {
190 accumulatedTime += (now - startTime);
192 if (accumulatedTime > timeToLive) {
199 * @return The total amount of time used, in milliseconds.
201 public long getTotalDuration() {
202 return accumulatedTime;
206 * This method is called to reset the retry counters. It has no effect on the time to live accumulator.
208 public void reset() {
213 * Sets the time to live to the value, expressed in seconds
216 * The time to live, in seconds
218 public void setTimeToLiveSeconds(int time) {
219 setTimeToLiveMS(time * 1000L);
223 * Sets the time to live to the value, expressed in milliseconds
226 * The time to live, in milliseconds
228 public void setTimeToLiveMS(long time) {
229 this.timeToLive = time;
233 * @return The service logic context associated with this request
235 public SvcLogicContext getSvcLogicContext() {
236 return svcLogicContext;
240 * @param svcLogicContext
241 * The service logic context to be associated with this request
243 public void setSvcLogicContext(SvcLogicContext svcLogicContext) {
244 this.svcLogicContext = svcLogicContext;