/**
* Tests that we are in {@link GemFireHealth#OKAY_HEALTH okay} health if cache loads take too
* long.
*
* @see CacheHealthEvaluator#checkLoadTime
*/
public void testCheckLoadTime() throws CacheException {
Cache cache = CacheFactory.create(this.system);
CachePerfStats stats = ((GemFireCacheImpl) cache).getCachePerfStats();
AttributesFactory factory = new AttributesFactory();
factory.setScope(Scope.LOCAL);
factory.setCacheLoader(
new CacheLoader() {
public Object load(LoaderHelper helper) throws CacheLoaderException {
return "Loaded";
}
public void close() {}
});
RegionAttributes attrs = factory.create();
Region region = cache.createRegion(this.getName(), attrs);
GemFireHealthConfig config = new GemFireHealthConfigImpl(null);
config.setMaxLoadTime(100);
CacheHealthEvaluator eval =
new CacheHealthEvaluator(config, this.system.getDistributionManager());
for (int i = 0; i < 10; i++) {
region.get("Test1 " + i);
}
long firstLoadTime = stats.getLoadTime();
long firstLoadsCompleted = stats.getLoadsCompleted();
assertTrue(firstLoadTime >= 0);
assertTrue(firstLoadsCompleted > 0);
// First time should always be empty
List status = new ArrayList();
eval.evaluate(status);
assertEquals(0, status.size());
config = new GemFireHealthConfigImpl(null);
config.setMaxLoadTime(10);
eval = new CacheHealthEvaluator(config, this.system.getDistributionManager());
eval.evaluate(status);
long start = System.currentTimeMillis();
for (int i = 0; i < 100; i++) {
region.get("Test2 " + i);
}
assertTrue(System.currentTimeMillis() - start < 1000);
long secondLoadTime = stats.getLoadTime();
long secondLoadsCompleted = stats.getLoadsCompleted();
assertTrue(
"firstLoadTime=" + firstLoadTime + ", secondLoadTime=" + secondLoadTime,
secondLoadTime >= firstLoadTime);
assertTrue(secondLoadsCompleted > firstLoadsCompleted);
// Averge should be less than 10 milliseconds
status = new ArrayList();
eval.evaluate(status);
assertEquals(0, status.size());
region
.getAttributesMutator()
.setCacheLoader(
new CacheLoader() {
public Object load(LoaderHelper helper) throws CacheLoaderException {
try {
Thread.sleep(20);
} catch (InterruptedException ex) {
fail("Why was I interrupted?");
}
return "Loaded";
}
public void close() {}
});
for (int i = 0; i < 50; i++) {
region.get("Test3 " + i);
}
long thirdLoadTime = stats.getLoadTime();
long thirdLoadsCompleted = stats.getLoadsCompleted();
assertTrue(thirdLoadTime > secondLoadTime);
assertTrue(thirdLoadsCompleted > secondLoadsCompleted);
status = new ArrayList();
eval.evaluate(status);
assertEquals(1, status.size());
AbstractHealthEvaluator.HealthStatus ill = (AbstractHealthEvaluator.HealthStatus) status.get(0);
assertEquals(GemFireHealth.OKAY_HEALTH, ill.getHealthCode());
String s = "The average duration of a Cache load";
assertTrue(ill.getDiagnosis().indexOf(s) != -1);
}
/**
* Tests that we are in {@link GemFireHealth#OKAY_HEALTH okay} health if the hit ratio dips below
* the threshold.
*/
public void testCheckHitRatio() throws CacheException {
Cache cache = CacheFactory.create(this.system);
// CachePerfStats stats = ((GemFireCache) cache).getCachePerfStats();
AttributesFactory factory = new AttributesFactory();
factory.setScope(Scope.LOCAL);
factory.setCacheLoader(
new CacheLoader() {
public Object load(LoaderHelper helper) throws CacheLoaderException {
return "Loaded";
}
public void close() {}
});
RegionAttributes attrs = factory.create();
Region region = cache.createRegion(this.getName(), attrs);
GemFireHealthConfig config = new GemFireHealthConfigImpl(null);
config.setMinHitRatio(0.5);
CacheHealthEvaluator eval =
new CacheHealthEvaluator(config, this.system.getDistributionManager());
List status = new ArrayList();
eval.evaluate(status);
assertEquals(0, status.size());
region.get("One");
region.get("One");
region.get("One");
status = new ArrayList();
eval.evaluate(status);
assertEquals(0, status.size());
for (int i = 0; i < 50; i++) {
region.get("Miss " + i);
}
status = new ArrayList();
eval.evaluate(status);
AbstractHealthEvaluator.HealthStatus ill = (AbstractHealthEvaluator.HealthStatus) status.get(0);
assertEquals(GemFireHealth.OKAY_HEALTH, ill.getHealthCode());
String s = "The hit ratio of this Cache";
assertTrue(ill.getDiagnosis().indexOf(s) != -1);
}