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package io.vertx.up.uca.rs.hunt;
import io.horizon.eon.VString;
import io.vertx.core.http.HttpHeaders;
import io.vertx.core.http.HttpMethod;
import io.vertx.core.http.HttpServerResponse;
import io.horizon.eon.em.web.HttpStatusCode;
import io.vertx.up.commune.Envelop;
import io.vertx.up.uca.rs.hunt.adaptor.WingSelector;
import io.vertx.up.uca.rs.hunt.adaptor.Wings;
import jakarta.ws.rs.core.MediaType;
import java.time.Instant;
import java.util.Objects;
import java.util.Set;
/**
* Content-Type
* Accept
*/
final class Outcome {
static void media(final HttpServerResponse response, final Set produces) {
/*
* Response head already sent
*/
if (!response.headWritten()) {
/*
* @Produces means that server generate response to client
*/
if (produces.isEmpty()) {
/*
* No `produces` set for current api, select default `application/json`.
*/
response.putHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON);
} else {
if (produces.contains(MediaType.WILDCARD_TYPE)) {
/*
* Here are `.* / .*` wild card type set, select default `application/json`.
*/
response.putHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON);
} else {
/*
* MediaType extract from first set
*/
final MediaType type = produces.iterator().next();
if (Objects.isNull(type)) {
/*
* No content type set default situation, select default `application/json`
*/
response.putHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON);
} else {
/*
* Type + SLASH + SubType
*/
final String content = type.getType() + VString.SLASH + type.getSubtype();
response.putHeader(HttpHeaders.CONTENT_TYPE, content);
}
}
}
}
}
static void security(final HttpServerResponse response) {
/*
* Response head already sent
*/
if (!response.headWritten()) {
/*
* Refer: https://vertx.io/blog/writing-secure-vert-x-web-apps/
* */
response
/*
* do not allow proxies to cache the data
*/
.putHeader("Cache-Control", "no-store, no-cache")
/*
* prevents Internet Explorer from MIME - sniffing a
* response away from the declared content-type
*/
.putHeader("X-Content-Type-Options", "nosniff")
/*
* Strict HTTPS (for about ~6Months)
*/
.putHeader("Strict-Transport-Security", "max-age=" + 15768000)
/*
* IE8+ do not allow opening of attachments in the context of this resource
*/
.putHeader("X-Download-Options", "noopen")
/*
* enable XSS for IE
*/
.putHeader("X-XSS-Protection", "1; mode=block")
/*
* deny frames
*/
.putHeader("X-FRAME-OPTIONS", "DENY");
/*
* Set-Cookie
*/
}
}
static void out(final HttpServerResponse response, final Envelop envelop, final Set produces) {
/*
* Response processing
*/
if (!response.headWritten()) {
/*
* Set response data for current request / event
* The mime type has been set before this step ( mime ( HttpServerResponse, Set )
*/
if (!response.ended()) {
/*
* Set Date Header, Refer to RESTful Cookbook
* This header means when happened ( Error / Success )
*/
response.putHeader(HttpHeaders.DATE, Instant.now().toString());
if (HttpMethod.HEAD == envelop.method()) {
/*
* Whether the method is header
* When it's header, here process header request in special situation
* Only header
* 1. @HEAD annotation
* 2. No Data response ( No Content )
*/
response.setStatusCode(HttpStatusCode.NO_CONTENT.code());
response.setStatusMessage(HttpStatusCode.NO_CONTENT.message());
response.end(VString.EMPTY);
} else {
final String headerStr = response.headers().get(HttpHeaders.CONTENT_TYPE);
/*
* Wings selected
*/
final Wings wings = WingSelector.end(headerStr, produces);
/*
* Response head already sent
*/
wings.output(response, envelop);
}
}
}
response.closed();
}
}
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