X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=datarouter-node%2Fsrc%2Fmain%2Fjava%2Fcom%2Fatt%2Fresearch%2Fdatarouter%2Fnode%2FDeliveryQueue.java;fp=datarouter-node%2Fsrc%2Fmain%2Fjava%2Fcom%2Fatt%2Fresearch%2Fdatarouter%2Fnode%2FDeliveryQueue.java;h=0000000000000000000000000000000000000000;hb=e4b20cc6f7c31f48ddd0de5bcd054b09a35cd510;hp=71c77978d6b99e8edf51ceb135b3845fc7b74a35;hpb=315f5603d8e42969a13d985ca8bb50146e82325a;p=dmaap%2Fdatarouter.git
diff --git a/datarouter-node/src/main/java/com/att/research/datarouter/node/DeliveryQueue.java b/datarouter-node/src/main/java/com/att/research/datarouter/node/DeliveryQueue.java
deleted file mode 100644
index 71c77978..00000000
--- a/datarouter-node/src/main/java/com/att/research/datarouter/node/DeliveryQueue.java
+++ /dev/null
@@ -1,348 +0,0 @@
-/*******************************************************************************
- * ============LICENSE_START==================================================
- * * org.onap.dmaap
- * * ===========================================================================
- * * Copyright © 2017 AT&T 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====================================================
- * *
- * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
- * *
- ******************************************************************************/
-
-
-package com.att.research.datarouter.node;
-
-import java.io.*;
-import java.util.*;
-
-/**
- * Mechanism for monitoring and controlling delivery of files to a destination.
- *
- * The DeliveryQueue class maintains lists of DeliveryTasks for a single
- * destination (a subscription or another data router node) and assigns
- * delivery threads to try to deliver them. It also maintains a delivery
- * status that causes it to back off on delivery attempts after a failure.
- *
- * If the most recent delivery result was a failure, then no more attempts
- * will be made for a period of time. Initially, and on the first failure
- * following a success, this delay will be DeliveryQueueHelper.getInitFailureTimer() (milliseconds).
- * If, after this delay, additional failures occur, each failure will
- * multiply the delay by DeliveryQueueHelper.getFailureBackoff() up to a
- * maximum delay specified by DeliveryQueueHelper.getMaxFailureTimer().
- * Note that this behavior applies to the delivery queue as a whole and not
- * to individual files in the queue. If multiple files are being
- * delivered and one fails, the delay will be started. If a second
- * delivery fails while the delay was active, it will not change the delay
- * or change the duration of any subsequent delay.
- * If, however, it succeeds, it will cancel the delay.
- *
- * The queue maintains 3 collections of files to deliver: A todo list of
- * files that will be attempted, a working set of files that are being
- * attempted, and a retry set of files that were attempted and failed.
- * Whenever the todo list is empty and needs to be refilled, a scan of the
- * spool directory is made and the file names sorted. Any files in the working set are ignored.
- * If a DeliveryTask for the file is in the retry set, then that delivery
- * task is placed on the todo list. Otherwise, a new DeliveryTask for the
- * file is created and placed on the todo list.
- * If, when a DeliveryTask is about to be removed from the todo list, its
- * age exceeds DeliveryQueueHelper.getExpirationTimer(), then it is instead
- * marked as expired.
- *
- * A delivery queue also maintains a skip flag. This flag is true if the
- * failure timer is active or if no files are found in a directory scan.
- */
-public class DeliveryQueue implements Runnable, DeliveryTaskHelper {
- private DeliveryQueueHelper dqh;
- private DestInfo di;
- private Hashtable working = new Hashtable();
- private Hashtable retry = new Hashtable();
- private int todoindex;
- private boolean failed;
- private long failduration;
- private long resumetime;
- File dir;
- private Vector todo = new Vector();
- /**
- * Try to cancel a delivery task.
- * @return The length of the task in bytes or 0 if the task cannot be cancelled.
- */
- public synchronized long cancelTask(String pubid) {
- if (working.get(pubid) != null) {
- return(0);
- }
- DeliveryTask dt = retry.get(pubid);
- if (dt == null) {
- for (int i = todoindex; i < todo.size(); i++) {
- DeliveryTask xdt = todo.get(i);
- if (xdt.getPublishId().equals(pubid)) {
- dt = xdt;
- break;
- }
- }
- }
- if (dt == null) {
- dt = new DeliveryTask(this, pubid);
- if (dt.getFileId() == null) {
- return(0);
- }
- }
- if (dt.isCleaned()) {
- return(0);
- }
- StatusLog.logExp(dt.getPublishId(), dt.getFeedId(), dt.getSubId(), dt.getURL(), dt.getMethod(), dt.getCType(), dt.getLength(), "diskFull", dt.getAttempts());
- dt.clean();
- return(dt.getLength());
- }
- /**
- * Mark that a delivery task has succeeded.
- */
- public synchronized void markSuccess(DeliveryTask task) {
- working.remove(task.getPublishId());
- task.clean();
- failed = false;
- failduration = 0;
- }
- /**
- * Mark that a delivery task has expired.
- */
- public synchronized void markExpired(DeliveryTask task) {
- task.clean();
- }
- /**
- * Mark that a delivery task has failed permanently.
- */
- public synchronized void markFailNoRetry(DeliveryTask task) {
- working.remove(task.getPublishId());
- task.clean();
- failed = false;
- failduration = 0;
- }
- private void fdupdate() {
- if (!failed) {
- failed = true;
- if (failduration == 0) {
- failduration = dqh.getInitFailureTimer();
- }
- resumetime = System.currentTimeMillis() + failduration;
- long maxdur = dqh.getMaxFailureTimer();
- failduration = (long)(failduration * dqh.getFailureBackoff());
- if (failduration > maxdur) {
- failduration = maxdur;
- }
- }
- }
- /**
- * Mark that a delivery task has been redirected.
- */
- public synchronized void markRedirect(DeliveryTask task) {
- working.remove(task.getPublishId());
- retry.put(task.getPublishId(), task);
- }
- /**
- * Mark that a delivery task has temporarily failed.
- */
- public synchronized void markFailWithRetry(DeliveryTask task) {
- working.remove(task.getPublishId());
- retry.put(task.getPublishId(), task);
- fdupdate();
- }
- /**
- * Get the next task.
- */
- public synchronized DeliveryTask getNext() {
- DeliveryTask ret = peekNext();
- if (ret != null) {
- todoindex++;
- working.put(ret.getPublishId(), ret);
- }
- return(ret);
- }
- /**
- * Peek at the next task.
- */
- public synchronized DeliveryTask peekNext() {
- long now = System.currentTimeMillis();
- long mindate = now - dqh.getExpirationTimer();
- if (failed) {
- if (now > resumetime) {
- failed = false;
- } else {
- return(null);
- }
- }
- while (true) {
- if (todoindex >= todo.size()) {
- todoindex = 0;
- todo = new Vector();
- String[] files = dir.list();
- Arrays.sort(files);
- for (String fname: files) {
- if (!fname.endsWith(".M")) {
- continue;
- }
- String fname2 = fname.substring(0, fname.length() - 2);
- long pidtime = 0;
- int dot = fname2.indexOf('.');
- if (dot < 1) {
- continue;
- }
- try {
- pidtime = Long.parseLong(fname2.substring(0, dot));
- } catch (Exception e) {
- }
- if (pidtime < 1000000000000L) {
- continue;
- }
- if (working.get(fname2) != null) {
- continue;
- }
- DeliveryTask dt = retry.get(fname2);
- if (dt == null) {
- dt = new DeliveryTask(this, fname2);
- }
- todo.add(dt);
- }
- retry = new Hashtable();
- }
- if (todoindex < todo.size()) {
- DeliveryTask dt = todo.get(todoindex);
- if (dt.isCleaned()) {
- todoindex++;
- continue;
- }
- if (dt.getDate() >= mindate) {
- return(dt);
- }
- todoindex++;
- reportExpiry(dt);
- continue;
- }
- return(null);
- }
- }
- /**
- * Create a delivery queue for a given destination info
- */
- public DeliveryQueue(DeliveryQueueHelper dqh, DestInfo di) {
- this.dqh = dqh;
- this.di = di;
- dir = new File(di.getSpool());
- dir.mkdirs();
- }
- /**
- * Update the destination info for this delivery queue
- */
- public void config(DestInfo di) {
- this.di = di;
- }
- /**
- * Get the dest info
- */
- public DestInfo getDestInfo() {
- return(di);
- }
- /**
- * Get the config manager
- */
- public DeliveryQueueHelper getConfig() {
- return(dqh);
- }
- /**
- * Exceptional condition occurred during delivery
- */
- public void reportDeliveryExtra(DeliveryTask task, long sent) {
- StatusLog.logDelExtra(task.getPublishId(), task.getFeedId(), task.getSubId(), task.getLength(), sent);
- }
- /**
- * Message too old to deliver
- */
- public void reportExpiry(DeliveryTask task) {
- StatusLog.logExp(task.getPublishId(), task.getFeedId(), task.getSubId(), task.getURL(), task.getMethod(), task.getCType(), task.getLength(), "retriesExhausted", task.getAttempts());
- markExpired(task);
- }
- /**
- * Completed a delivery attempt
- */
- public void reportStatus(DeliveryTask task, int status, String xpubid, String location) {
- if (status < 300) {
- StatusLog.logDel(task.getPublishId(), task.getFeedId(), task.getSubId(), task.getURL(), task.getMethod(), task.getCType(), task.getLength(), di.getAuthUser(), status, xpubid);
- markSuccess(task);
- } else if (status < 400 && dqh.isFollowRedirects()) {
- StatusLog.logDel(task.getPublishId(), task.getFeedId(), task.getSubId(), task.getURL(), task.getMethod(), task.getCType(), task.getLength(), di.getAuthUser(), status, location);
- if (dqh.handleRedirection(di, location, task.getFileId())) {
- markRedirect(task);
- } else {
- StatusLog.logExp(task.getPublishId(), task.getFeedId(), task.getSubId(), task.getURL(), task.getMethod(), task.getCType(), task.getLength(), "notRetryable", task.getAttempts());
- markFailNoRetry(task);
- }
- } else if (status < 500) {
- StatusLog.logDel(task.getPublishId(), task.getFeedId(), task.getSubId(), task.getURL(), task.getMethod(), task.getCType(), task.getLength(), di.getAuthUser(), status, location);
- StatusLog.logExp(task.getPublishId(), task.getFeedId(), task.getSubId(), task.getURL(), task.getMethod(), task.getCType(), task.getLength(), "notRetryable", task.getAttempts());
- markFailNoRetry(task);
- } else {
- StatusLog.logDel(task.getPublishId(), task.getFeedId(), task.getSubId(), task.getURL(), task.getMethod(), task.getCType(), task.getLength(), di.getAuthUser(), status, location);
- markFailWithRetry(task);
- }
- }
- /**
- * Delivery failed by reason of an exception
- */
- public void reportException(DeliveryTask task, Exception exception) {
- StatusLog.logDel(task.getPublishId(), task.getFeedId(), task.getSubId(), task.getURL(), task.getMethod(), task.getCType(), task.getLength(), di.getAuthUser(), -1, exception.toString());
- dqh.handleUnreachable(di);
- markFailWithRetry(task);
- }
- /**
- * Get the feed ID for a subscription
- * @param subid The subscription ID
- * @return The feed ID
- */
- public String getFeedId(String subid) {
- return(dqh.getFeedId(subid));
- }
- /**
- * Get the URL to deliver a message to given the file ID
- */
- public String getDestURL(String fileid) {
- return(dqh.getDestURL(di, fileid));
- }
- /**
- * Deliver files until there's a failure or there are no more
- * files to deliver
- */
- public void run() {
- DeliveryTask t;
- long endtime = System.currentTimeMillis() + dqh.getFairTimeLimit();
- int filestogo = dqh.getFairFileLimit();
- while ((t = getNext()) != null) {
- t.run();
- if (--filestogo <= 0 || System.currentTimeMillis() > endtime) {
- break;
- }
- }
- }
- /**
- * Is there no work to do for this queue right now?
- */
- public synchronized boolean isSkipSet() {
- return(peekNext() == null);
- }
- /**
- * Reset the retry timer
- */
- public void resetQueue() {
- resumetime = System.currentTimeMillis();
- }
-}