io.silverware.microservices.monitoring.MetricsAggregator Maven / Gradle / Ivy
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/*
* -----------------------------------------------------------------------\
* SilverWare
*
* Copyright (C) 2016 the original author or authors.
*
* 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.
* -----------------------------------------------------------------------/
*/
package io.silverware.microservices.monitoring;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import io.silverware.microservices.annotations.Microservice;
import io.silverware.microservices.monitoring.annotations.NotMonitored;
/**
* Static method for storage and exposure of all metrics recorded.
*/
@Microservice
public class MetricsAggregator {
/**
* Register storing {@link MetricsManager} for every method being called.
*/
private static final Map microserviceRegister = new HashMap<>();
private MetricsAggregator() {
}
/**
* Method for adding new microservice method into MetricsAggregator. Method is not monitored by {@link MonitoringMethodHandler}.
*
* @param method method to be added.
* @param time runtime of method to be added.
*/
@NotMonitored
public static void addMicroserviceMethod(Method method, BigDecimal time) {
MetricsManager metricsManager = microserviceRegister.get(method);
if (metricsManager == null) {
metricsManager = new MetricsManager();
metricsManager.addTime(time);
microserviceRegister.put(method, metricsManager);
} else {
metricsManager.addTime(time);
}
}
/**
* Method for exposing recorded metrics. Method is not monitored by {@link MonitoringMethodHandler}.
*
* @return metrics in JSON format.
*/
@NotMonitored
public static String getMetrics() {
if (microserviceRegister.isEmpty()) {
return "";
}
StringBuilder sb = new StringBuilder();
sb.append("{");
for (Map.Entry e : microserviceRegister.entrySet()) {
sb.append("\"").append(e.getKey().getDeclaringClass().getSimpleName()).append("::").append(e.getKey().getName()).append("\": ");
sb.append(e.getValue().toJson()).append(",");
}
//remove last comma
sb.deleteCharAt(sb.length() - 1);
sb.append("}");
return sb.toString();
}
/**
* Method for exposing all recorded values. Method is not monitored by {@link MonitoringMethodHandler}.
*
* @return all recorded values in array-like format.
*/
@NotMonitored
public static String getValues() {
StringBuilder sb = new StringBuilder();
for (Map.Entry e : microserviceRegister.entrySet()) {
sb.append(e.getKey().getDeclaringClass().getSimpleName()).append("::").append(e.getKey().getName()).append(": ");
for (BigDecimal bd : e.getValue().getValues()) {
sb.append(bd).append(",");
}
//remove last comma
sb.deleteCharAt(sb.length() - 1);
sb.append("\n");
}
return sb.toString();
}
/**
* Method showing how much values have been recorded for each microservice method. Method is not monitored by {@link MonitoringMethodHandler}.
*
* @return number of values for every microservice method in array-like format.
*/
@NotMonitored
public static String getValuesSize() {
StringBuilder sb = new StringBuilder();
for (Map.Entry e : microserviceRegister.entrySet()) {
sb.append(e.getKey().getDeclaringClass().getSimpleName()).append("::").append(e.getKey().getName()).append(": ").append(e.getValue().getValues().size()).append("\n");
}
return sb.toString();
}
/**
* Method returning unmodifiable register storing {@link MetricsManager} for every method being called.
*
* @return unmodifiable register.
*/
@NotMonitored
public static Map getMicroserviceRegister() {
return Collections.unmodifiableMap(microserviceRegister);
}
}