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A simple filiter in zuul

Anjali Sharma answered on January 6, 2023 Popularity 1/10 Helpfulness 1/10

answer A simple filiter in zuul

A simple filiter in zuul

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Zuul’s rule engine lets rules and filters be written in essentially any JVM language, with built-in support for Java and Groovy.

class QueryParamPreFilter extends ZuulFilter {
	@Override
	public int filterOrder() {
		return PRE_DECORATION_FILTER_ORDER - 1; // run before PreDecoration
	}

	@Override
	public String filterType() {
		return PRE_TYPE;
	}

	@Override
	public boolean shouldFilter() {
		RequestContext ctx = RequestContext.getCurrentContext();
		return !ctx.containsKey(FORWARD_TO_KEY) // a filter has already forwarded
				&& !ctx.containsKey(SERVICE_ID_KEY); // a filter has already determined serviceId
	}
    @Override
    public Object run() {
        RequestContext ctx = RequestContext.getCurrentContext();
		HttpServletRequest request = ctx.getRequest();
		if (request.getParameter("sample") != null) {
		    // put the serviceId in `RequestContext`
    		ctx.put(SERVICE_ID_KEY, request.getParameter("foo"));
    	}
        return null;
    }
}

https://cloud.spring.io/spring-cloud-netflix/multi/multi__router_and_filter_zuul.html

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript

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Contributed on Jan 06 2023

Anjali Sharma

0 Answers Avg Quality 2/10

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