use of org.apache.solr.util.plugin.PluginInfoInitialized in project lucene-solr by apache.
the class MetricSuppliers method getReservoir.
private static final Reservoir getReservoir(SolrResourceLoader loader, PluginInfo info) {
if (info == null) {
return new ExponentiallyDecayingReservoir();
}
Clock clk = getClock(info, CLOCK);
String clazz = ExponentiallyDecayingReservoir.class.getName();
int size = -1;
double alpha = -1;
long window = -1;
if (info.initArgs != null) {
if (info.initArgs.get(RESERVOIR) != null) {
String val = String.valueOf(info.initArgs.get(RESERVOIR)).trim();
if (!val.isEmpty()) {
clazz = val;
}
}
Number n = (Number) info.initArgs.get(RESERVOIR_SIZE);
if (n != null) {
size = n.intValue();
}
n = (Number) info.initArgs.get(RESERVOIR_EDR_ALPHA);
if (n != null) {
alpha = n.doubleValue();
}
n = (Number) info.initArgs.get(RESERVOIR_WINDOW);
if (n != null) {
window = n.longValue();
}
}
if (size <= 0) {
size = DEFAULT_SIZE;
}
if (alpha <= 0) {
alpha = DEFAULT_ALPHA;
}
// special case for core implementations
if (clazz.equals(EDR_CLAZZ)) {
return new ExponentiallyDecayingReservoir(size, alpha, clk);
} else if (clazz.equals(UNI_CLAZZ)) {
return new UniformReservoir(size);
} else if (clazz.equals(STW_CLAZZ)) {
if (window <= 0) {
// 5 minutes, comparable to EDR
window = DEFAULT_WINDOW;
}
return new SlidingTimeWindowReservoir(window, TimeUnit.SECONDS);
} else if (clazz.equals(SW_CLAZZ)) {
return new SlidingWindowReservoir(size);
} else {
// custom reservoir
Reservoir reservoir;
try {
reservoir = loader.newInstance(clazz, Reservoir.class);
if (reservoir instanceof PluginInfoInitialized) {
((PluginInfoInitialized) reservoir).init(info);
} else {
SolrPluginUtils.invokeSetters(reservoir, info.initArgs, true);
}
return reservoir;
} catch (Exception e) {
log.warn("Error initializing custom Reservoir implementation (will use default): " + info, e);
return new ExponentiallyDecayingReservoir(size, alpha, clk);
}
}
}
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