CODEWITHSUNDEEP
javaloggingjettyembedded-jetty
Henrique
Henrique

Reputation: 5011

Spark web framework logging requests and responses

I'm using the Spark web framework to develop a REST API. Is there a way to automatically log all incoming requests and outgoing responses (query params, headers, status codes, etc) or do I need to manually add logging for each one of the handlers?

The Spark documentation has nothing on this subject.

Thanks.

Upvotes: 14

Views: 3591

Answers (3)

Vivek
Vivek

Reputation: 67

This should be enough:

public static void main(String[] args) {
    // add logger
    after((request, response) -> {
        LOG.info(String.format("%s %s", request.requestMethod(), request.url()));
    });
}

Upvotes: 0

Evan Siroky
Evan Siroky

Reputation: 9418

Building upon Joe's answer... here's a version that'll do both request and reponse:

public static void main(String[] args) {
    ... all your other handlers

    // add logger
    after((request, response) -> {
        LOG.info(requestAndResponseInfoToString(request, response));
    });
}

private static String requestAndResponseInfoToString(Request request, Response response) {
    StringBuilder sb = new StringBuilder();
    sb.append(request.requestMethod());
    sb.append(" " + request.url());
    sb.append(" " + request.body());
    HttpServletResponse raw = response.raw();
    sb.append(" Reponse: " + raw.getStatus());
    sb.append(" " + raw.getHeader("content-type"));
    try {
        sb.append(" body size in bytes: " + response.body().getBytes(raw.getCharacterEncoding()).length);
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return sb.toString();
}

Upvotes: 1

Joe
Joe

Reputation: 3620

Here's was my workaround.

private static String requestInfoToString(Request request) {
    StringBuilder sb = new StringBuilder();
    sb.append(request.requestMethod());
    sb.append(" " + request.url());
    sb.append(" " + request.body());
    return sb.toString();
}

public static void main(String[] args) {
    // Bunch of handlers

    before((request, response) -> {
        log.info(requestInfoToString(request));
    });
}

Upvotes: 12

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