com.avanza.astrix.ft.hystrix.HystrixStrategyMapping Maven / Gradle / Ivy
/*
* Copyright 2014 Avanza Bank AB
*
* 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 com.avanza.astrix.ft.hystrix;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.netflix.hystrix.HystrixCommandKey;
import com.netflix.hystrix.HystrixThreadPoolKey;
import com.netflix.hystrix.strategy.concurrency.HystrixConcurrencyStrategyDefault;
import com.netflix.hystrix.strategy.eventnotifier.HystrixEventNotifierDefault;
import com.netflix.hystrix.strategy.properties.HystrixPropertiesStrategyDefault;
final class HystrixStrategyMapping {
private static Pattern pattern = Pattern.compile("\\[(\\d+)\\]$");
private final Map strategiesById = new ConcurrentHashMap<>();
private Optional getStrategies(String strategiesId) {
return Optional.ofNullable(strategiesById.get(strategiesId));
}
void registerStrategies(HystrixStrategies strategies) {
strategiesById.put(strategies.getId(), strategies);
}
HystrixStrategies getHystrixStrategies(HystrixCommandKey commandKey) {
String contextId = parseStrategiesId(commandKey.name()).orElse("1");
return getStrategies(contextId).orElseGet(HystrixStrategyMapping::getDefault);
}
HystrixStrategies getHystrixStrategies(HystrixThreadPoolKey commandKey) {
String contextId = parseStrategiesId(commandKey.name()).orElse("1");
return getStrategies(contextId).orElseGet(HystrixStrategyMapping::getDefault);
}
Optional parseStrategiesId(String commandKey) {
Matcher matcher = pattern.matcher(commandKey);
if (matcher.find()) {
return Optional.of(matcher.group(1));
}
return Optional.empty();
}
static HystrixStrategies getDefault() {
return new HystrixStrategies(HystrixPropertiesStrategyDefault.getInstance(),
HystrixConcurrencyStrategyDefault.getInstance(),
HystrixEventNotifierDefault.getInstance(),
"default");
}
}