Examples with CircuitBreakResult com.tencent.polaris.api.plugin.circuitbreaker.CircuitBreakResult used on opensource projects

Example 1 with CircuitBreakResult

use of com.tencent.polaris.api.plugin.circuitbreaker.CircuitBreakResult in project polaris-java by polarismesh.

the class ChangeStateUtils method buildCircuitBreakResult.

/**
 * 构建熔断结果
 *
 * @param stateMachine 熔断状态机
 * @param instances 实例集
 * @param parameter 熔断参数
 * @param <T> 配置类型
 * @return 结果
 */
public static <T extends Verifier> CircuitBreakResult buildCircuitBreakResult(StateMachine<T> stateMachine, Collection<Instance> instances, StateMachine.Parameter parameter) {
    long curTimeMs = System.currentTimeMillis();
    CircuitBreakResult result = new CircuitBreakResult(curTimeMs, parameter.getHalfOpenMaxReqCount());
    String cbName = parameter.getCircuitBreakerName();
    for (Instance instance : instances) {
        Set<StatusDimension> statusDimensions = stateMachine.getStatusDimensions(instance, parameter);
        if (CollectionUtils.isEmpty(statusDimensions)) {
            continue;
        }
        String instanceId = instance.getId();
        for (StatusDimension statusDimension : statusDimensions) {
            if (stateMachine.closeToOpen(instance, statusDimension, parameter)) {
                result.getInstancesToOpen().put(new ResultKey(instanceId, statusDimension), instance);
                LOG.info("circuitBreaker: instance {} and dimension {} changed from close to open by {}", instanceId, statusDimension, cbName);
                continue;
            }
            if (stateMachine.openToHalfOpen(instance, statusDimension, parameter)) {
                result.getInstancesToHalfOpen().put(new ResultKey(instanceId, statusDimension), instance);
                LOG.info("circuitBreaker: instance {} and dimension {} changed from open to halfOpen by {}", instanceId, statusDimension, cbName);
                continue;
            }
            if (stateMachine.halfOpenToOpen(instance, statusDimension, parameter)) {
                result.getInstancesToOpen().put(new ResultKey(instanceId, statusDimension), instance);
                LOG.info("circuitBreaker: instance {} and dimension {} changed from halfOpen to open by {}", instanceId, statusDimension, cbName);
                continue;
            }
            if (stateMachine.halfOpenToClose(instance, statusDimension, parameter)) {
                result.getInstancesToClose().put(new ResultKey(instanceId, statusDimension), instance);
                LOG.info("circuitBreaker: instance {} and dimension {} changed from halfOpen to close by {}", instanceId, statusDimension, cbName);
            }
        }
    }
    return result;
}

Example 2 with CircuitBreakResult

use of com.tencent.polaris.api.plugin.circuitbreaker.CircuitBreakResult in project polaris-java by polarismesh.

the class InstancesCircuitBreakTask method run.

@Override
public void run() {
    Map<String, CircuitBreakResult> allResults = new HashMap<>();
    Set<ResultKey> statusChangedInstances = new HashSet<>();
    Collection<Instance> targetInstances = instances;
    if (StringUtils.isNotEmpty(instId)) {
        Instance instance = getInstance();
        if (null != instance) {
            targetInstances = new ArrayList<>();
            targetInstances.add(instance);
        }
    }
    if (CollectionUtils.isEmpty(targetInstances)) {
        return;
    }
    for (CircuitBreaker circuitBreaker : extensions.getCircuitBreakers()) {
        if (StringUtils.isNotBlank(cbName) && !cbName.equals(circuitBreaker.getName())) {
            continue;
        }
        CircuitBreakResult circuitBreakResult = circuitBreaker.checkInstance(targetInstances);
        if (null == circuitBreakResult || circuitBreakResult.isEmptyResult()) {
            continue;
        }
        cleanInstanceSet(circuitBreakResult.getInstancesToOpen(), statusChangedInstances);
        cleanInstanceSet(circuitBreakResult.getInstancesToHalfOpen(), statusChangedInstances);
        cleanInstanceSet(circuitBreakResult.getInstancesToClose(), statusChangedInstances);
        allResults.put(circuitBreaker.getName(), circuitBreakResult);
    }
    ServiceUpdateRequest updateRequest = buildServiceUpdateRequest(serviceKey, allResults);
    if (CollectionUtils.isEmpty(updateRequest.getProperties())) {
        return;
    }
    LOG.info("update cache for circuitbreaker, value is {}", updateRequest);
    extensions.getLocalRegistry().updateInstances(updateRequest);
}