Example usage for org.springframework.http.server.reactive ServerHttpRequest mutate

Introduction

In this page you can find the example usage for org.springframework.http.server.reactive ServerHttpRequest mutate.

Prototype

default ServerHttpRequest.Builder mutate() 

Source Link

Document

Return a builder to mutate properties of this request by wrapping it with ServerHttpRequestDecorator and returning either mutated values or delegating back to this instance.

Usage

From source file:org.springframework.cloud.gateway.filter.factory.PrefixPathGatewayFilterFactory.java

@Override
public GatewayFilter apply(Config config) {
    return (exchange, chain) -> {

        boolean alreadyPrefixed = exchange.getAttributeOrDefault(GATEWAY_ALREADY_PREFIXED_ATTR, false);
        if (alreadyPrefixed) {
            return chain.filter(exchange);
        }//  w w  w  .  ja v a  2  s  .c  o  m
        exchange.getAttributes().put(GATEWAY_ALREADY_PREFIXED_ATTR, true);

        ServerHttpRequest req = exchange.getRequest();
        addOriginalRequestUrl(exchange, req.getURI());
        String newPath = config.prefix + req.getURI().getRawPath();

        ServerHttpRequest request = req.mutate().path(newPath).build();

        exchange.getAttributes().put(GATEWAY_REQUEST_URL_ATTR, request.getURI());

        if (log.isTraceEnabled()) {
            log.trace("Prefixed URI with: " + config.prefix + " -> " + request.getURI());
        }

        return chain.filter(exchange.mutate().request(request).build());
    };
}

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