Examples with MissingKeyFilterExpressionException com.giffing.bucket4j.spring.boot.starter.exception.MissingKeyFilterExpressionException used on opensource projects

Example 1 with MissingKeyFilterExpressionException

use of com.giffing.bucket4j.spring.boot.starter.exception.MissingKeyFilterExpressionException in project bucket4j-spring-boot-starter by MarcGiffing.

the class Bucket4JBaseConfiguration method getKeyFilter.

/**
 * Creates the key filter lambda which is responsible to decide how the rate limit will be performed. The key
 * is the unique identifier like an IP address or a username.
 *
 * @param url is used to generated a unique cache key
 * @param rateLimit the {@link RateLimit} configuration which holds the skip condition string
 * @param expressionParser is used to evaluate the expression if the filter key type is EXPRESSION.
 * @param beanFactory used to get full access to all java beans in the SpEl
 * @return should not been null. If no filter key type is matching a plain 1 is returned so that all requests uses the same key.
 */
public KeyFilter getKeyFilter(String url, RateLimit rateLimit, ExpressionParser expressionParser, BeanFactory beanFactory) {
    switch(rateLimit.getFilterKeyType()) {
        case IP:
            return (request) -> url + "-" + request.getRemoteAddr();
        case EXPRESSION:
            String expression = rateLimit.getExpression();
            if (StringUtils.isEmpty(expression)) {
                throw new MissingKeyFilterExpressionException();
            }
            StandardEvaluationContext context = new StandardEvaluationContext();
            context.setBeanResolver(new BeanFactoryResolver(beanFactory));
            return (request) -> {
                // TODO performance problem - how can the request object reused in the expression without setting it as a rootObject
                Expression expr = expressionParser.parseExpression(rateLimit.getExpression());
                final String value = expr.getValue(context, request, String.class);
                return url + "-" + value;
            };
    }
    return (request) -> url + "-" + "1";
}

Example 2 with MissingKeyFilterExpressionException

use of com.giffing.bucket4j.spring.boot.starter.exception.MissingKeyFilterExpressionException in project bucket4j-spring-boot-starter by MarcGiffing.

the class Bucket4JAutoConfigFailureAnalyzer method analyze.

@Override
protected FailureAnalysis analyze(Throwable rootFailure, Bucket4jGeneralException cause) {
    String descriptionMessage = cause.getMessage();
    String actionMessage = cause.getMessage();
    if (cause instanceof JCacheNotFoundException) {
        JCacheNotFoundException ex = (JCacheNotFoundException) cause;
        descriptionMessage = "The cache name name defined in the property is not configured in the caching provider";
        actionMessage = "Cache name: " + ex.getCacheName() + newline + "Please configure your caching provider (ehcache, hazelcast, ...)";
    }
    if (cause instanceof MissingKeyFilterExpressionException) {
        descriptionMessage = "You've set the 'filter-key-type' to 'expression' but didn't set the property 'expression'";
        actionMessage = "Please set the property 'expression' in your configuration file with a valid expression (see Spring Expression Language)" + newline;
    }
    return new FailureAnalysis(descriptionMessage, actionMessage, cause);
}