/**
* Get a random key from the given region that is within this instance's range. If no keys qualify
* in the region, return null.
*
* @param aRegion - The region to get the key from.
* @param excludeKey - The region to get the key from.
* @returns A key from aRegion, or null.
*/
public Object getRandomKey(Region aRegion, Object excludeKey) {
long start = System.currentTimeMillis();
int lower = ((Integer) (lowerKeyRange.get())).intValue();
int upper = ((Integer) (upperKeyRange.get())).intValue();
long randomKeyIndex = TestConfig.tab().getRandGen().nextLong(lower, upper);
long startKeyIndex = randomKeyIndex;
Object key = NameFactory.getObjectNameForCounter(randomKeyIndex);
do {
boolean done = false;
if ((!(key.equals(excludeKey))) && (aRegion.containsKey(key))) done = true;
if (done) break;
randomKeyIndex++; // go to the next key
if (randomKeyIndex > upper) randomKeyIndex = lower;
if (randomKeyIndex == startKeyIndex) { // considered all keys
key = null;
break;
}
key = NameFactory.getObjectNameForCounter(randomKeyIndex);
} while (true);
long end = System.currentTimeMillis();
Log.getLogWriter()
.info(
"Done in TxUtilKeyRange:getRandomKey, key is "
+ key
+ " "
+ aRegion.getFullPath()
+ " getRandomKey took "
+ (end - start)
+ " millis");
return key;
}
/** Initialize the key ranges */
public void initialize() {
long uniqueKeyCounter =
TxBB.getBB().getSharedCounters().incrementAndRead(TxBB.UniqueKeyCounter);
int lower = (int) (((uniqueKeyCounter - 1) * KEY_RANGE) + 1);
int upper = (int) (uniqueKeyCounter * KEY_RANGE);
lowerKeyRange.set(new Integer(lower));
upperKeyRange.set(new Integer(upper));
Log.getLogWriter()
.info(
"LowerKeyRange is "
+ lowerKeyRange.get()
+ ", upperKeyRange is "
+ upperKeyRange.get());
super.initialize();
}
/** Called for debugging */
public void printKeyRange(Region aRegion) {
int lower = ((Integer) (lowerKeyRange.get())).intValue();
int upper = ((Integer) (upperKeyRange.get())).intValue();
StringBuffer aStr = new StringBuffer();
for (int i = lower; i <= upper; i++) {
Object key = NameFactory.getObjectNameForCounter(i);
aStr.append(
"key "
+ key
+ " containsKey: "
+ aRegion.containsKey(key)
+ ", containsValueForKey: "
+ aRegion.containsValueForKey(key)
+ ", getValueInVM: "
+ diskReg.DiskRegUtil.getValueInVM(aRegion, key)
+ "\n");
}
Log.getLogWriter().info(aStr.toString());
}
/**
* Creates a new key/value in the given region by creating a new key within the range and a random
* value.
*
* @param aRegion The region to create the new key in.
* @param exists Not used in this overridden method; this test wants to use unique keys even on
* creates, so we don't do anything different here based on the value of exists.
* @return An instance of Operation describing the create operation.
*/
@Override
public Operation createEntry(Region aRegion, boolean exists) {
int lower = ((Integer) (lowerKeyRange.get())).intValue();
int upper = ((Integer) (upperKeyRange.get())).intValue();
long keyIndex = TestConfig.tab().getRandGen().nextInt(lower, upper);
long startKeyIndex = keyIndex;
Object key = NameFactory.getObjectNameForCounter(keyIndex);
boolean containsKey = aRegion.containsKey(key);
while (containsKey) { // looking for a key that does not exist
keyIndex++; // go to the next key
if (keyIndex > upper) keyIndex = lower;
if (keyIndex == startKeyIndex) { // considered all keys
return null;
}
key = NameFactory.getObjectNameForCounter(keyIndex);
containsKey = aRegion.containsKey(key);
}
BaseValueHolder vh = new ValueHolder(key, randomValues, new Integer(modValInitializer++));
try {
Log.getLogWriter()
.info(
"createEntryKeyRange: putting key "
+ key
+ ", object "
+ vh.toString()
+ " in region "
+ aRegion.getFullPath());
aRegion.put(key, vh);
Log.getLogWriter()
.info(
"createEntryKeyRange: done putting key "
+ key
+ ", object "
+ vh.toString()
+ " in region "
+ aRegion.getFullPath());
} catch (Exception e) {
throw new TestException(TestHelper.getStackTrace(e));
}
return new Operation(aRegion.getFullPath(), key, Operation.ENTRY_CREATE, null, vh.modVal);
}
