* org.onap.aaf
* ===========================================================================
* Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
+ *
+ * Modification Copyright (c) 2019 IBM
* ===========================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
public class Cached<TRANS extends Trans, DATA extends Cacheable> extends Cache<TRANS,DATA> {
// Java does not allow creation of Arrays with Generics in them...
- // private Map<String,Dated> cache[];
protected final CIDAO<TRANS> info;
private static Timer infoTimer;
protected final String name;
private final long expireIn;
-
- // Taken from String Hash, but coded, to ensure consistent across Java versions. Also covers negative case;
- public int cacheIdx(String key) {
- int h = 0;
- for (int i = 0; i < key.length(); i++) {
- h = 31*h + key.charAt(i);
- }
- if(h<0)h*=-1;
- return h%segSize;
- }
-
public Cached(CIDAO<TRANS> info, String name, int segSize, long expireIn) {
this.name =name;
this.segSize = segSize;
this.expireIn = expireIn;
cache = new Object[segSize];
// Create a new Map for each Segment, and store locally
- for(int i=0;i<segSize;++i) {
+ for (int i=0;i<segSize;++i) {
cache[i]=obtain(name+i);
}
}
+
+ // Taken from String Hash, but coded, to ensure consistent across Java versions. Also covers negative case;
+ public int cacheIdx(String key) {
+ int h = 0;
+ for (int i = 0; i < key.length(); i++) {
+ h = 31*h + key.charAt(i);
+ }
+ if (h<0) {
+ h*=-1;
+ }
+ return h%segSize;
+ }
public void add(String key, List<DATA> data) {
@SuppressWarnings("unchecked")
int cacheIdx = cacheIdx(key);
@SuppressWarnings("unchecked")
Map<String,Dated> map = ((Map<String,Dated>)cache[cacheIdx]);
-// if(map.remove(key)!=null) // Not seeming to remove all the time
- if(map!=null)map.clear();
-// System.err.println("Remove " + name + " " + key);
+ if (map!=null)map.clear();
return cacheIdx;
}
public Result<Void> invalidate(int segment) {
- if(segment<0 || segment>=cache.length) return Result.err(Status.ERR_BadData,"Cache Segment %s is out of range",Integer.toString(segment));
+ if (segment<0 || segment>=cache.length) {
+ return Result.err(Status.ERR_BadData,"Cache Segment %s is out of range",Integer.toString(segment));
+ }
@SuppressWarnings("unchecked")
Map<String,Dated> map = ((Map<String,Dated>)cache[segment]);
- if(map!=null) {
+ if (map!=null) {
map.clear();
}
return Result.ok();
}
- protected interface Getter<D> {
+ @FunctionalInterface
+ public interface Getter<D> {
public abstract Result<List<D>> get();
};
Date dbStamp = info.get(trans, name,cacheIdx);
// Check for cache Entry and whether it is still good (a good Cache Entry is same or after DBEntry, so we use "before" syntax)
- if(cached!=null && dbStamp.before(cached.timestamp)) {
+ if (cached!=null && dbStamp!=null && dbStamp.before(cached.timestamp)) {
ld = (List<DATA>)cached.data;
rld = Result.ok(ld);
} else {
rld = getter.get();
- if(rld.isOK()) { // only store valid lists
+ if (rld.isOK()) { // only store valid lists
map.put(key, new Dated(rld.value,expireIn)); // successful item found gets put in cache
-// } else if(rld.status == Result.ERR_Backend){
-// map.remove(key);
}
}
return rld;
* @param dao
*/
public static void startCleansing(AuthzEnv env, CachedDAO<?,?,?> ... dao) {
- for(CachedDAO<?,?,?> d : dao) {
- for(int i=0;i<d.segSize;++i) {
+ for (CachedDAO<?,?,?> d : dao) {
+ for (int i=0;i<d.segSize;++i) {
startCleansing(env, d.table()+i);
}
}
public static<T extends Trans> void startRefresh(AuthzEnv env, CIDAO<AuthzTrans> cidao) {
- if(infoTimer==null) {
+ if (infoTimer==null) {
infoTimer = new Timer("CachedDAO Info Refresh Timer");
int minRefresh = 10*1000*60; // 10 mins Integer.parseInt(env.getProperty(CACHE_MIN_REFRESH_INTERVAL,"2000")); // 2 second minimum refresh
infoTimer.schedule(new Refresh(env,cidao, minRefresh), 1000, minRefresh); // note: Refresh from DB immediately
public static void stopTimer() {
Cache.stopTimer();
- if(infoTimer!=null) {
+ if (infoTimer!=null) {
infoTimer.cancel();
infoTimer = null;
}
}
- private final static class Refresh extends TimerTask {
- private static final int maxRefresh = 2*60*10000; // 20 mins
+ private static final class Refresh extends TimerTask {
+ private static final int MAXREFRESH = 2*60*10000; // 20 mins
private AuthzEnv env;
private CIDAO<AuthzTrans> cidao;
private int minRefresh;
this.env = env;
this.cidao = cidao;
this.minRefresh = minRefresh;
- lastRun = System.currentTimeMillis()-maxRefresh-1000;
+ lastRun = System.currentTimeMillis()-MAXREFRESH-1000;
}
@Override
long now = System.currentTimeMillis();
long interval = now-lastRun;
- if(interval < minRefresh || interval < Math.min(env.transRate(),maxRefresh)) return;
+ if (interval < minRefresh || interval < Math.min(env.transRate(),MAXREFRESH)) {
+ return;
+ }
lastRun = now;
AuthzTrans trans = env.newTransNoAvg();
Result<Void> rv = cidao.check(trans);
- if(rv.status!=Result.OK) {
+ if (rv.status!=Result.OK) {
env.error().log("Error in CacheInfo Refresh",rv.details);
}
- if(env.debug().isLoggable()) {
+ if (env.debug().isLoggable()) {
StringBuilder sb = new StringBuilder("Cache Info Refresh: ");
trans.auditTrail(0, sb, Env.REMOTE);
env.debug().log(sb);
Code Review / aaf / authz.git / blobdiff