2.91. 平台 HTTP

from("platform-http:/hello").setBody(simple("Hello ${header.name}"));

from("platform-http:/hello?httpMethodRestrict=GET").setBody(simple("Hello ${header.name}"));

<dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-rest</artifactId>
</dependency>

rest()
    .get("/my-get-endpoint")
        .to("direct:handleGetRequest");

    .post("/my-post-endpoint")
        .to("direct:handlePostRequest");

from("platform-http:/upload/multipart?fileNameExtWhitelist=adoc,txt&httpMethodRestrict=POST")
    .to("log:multipart")
    .process(e -> {
        final AttachmentMessage am = e.getMessage(AttachmentMessage.class);
        if (am.hasAttachments()) {
            am.getAttachments().forEach((fileName, dataHandler) -> {
                try (InputStream in = dataHandler.getInputStream()) {
                    // do something with the input stream
                } catch (IOException ioe) {
                    throw new RuntimeException(ioe);
                }
            });
        }
    });

from("platform-http:/secure")
    .process(e -> {
        Message message = e.getMessage();
        QuarkusHttpUser user = message.getHeader(VertxPlatformHttpConstants.AUTHENTICATED_USER, QuarkusHttpUser.class);
        SecurityIdentity securityIdentity = user.getSecurityIdentity();
        Principal principal = securityIdentity.getPrincipal();
        // Do something useful with SecurityIdentity / Principal. E.g check user roles etc.
    });

from("platform-http:proxy")
    .toD("http://"
        + "${headers." + Exchange.HTTP_HOST + "}");

onException(InvalidOrderTotalException.class)
    .handled(true)
    .setHeader(Exchange.HTTP_RESPONSE_CODE).constant(500)
    .setHeader(Exchange.CONTENT_TYPE).constant("text/plain")
    .setBody().constant("The order total was not greater than 100");

from("platform-http:/orders")
    .choice().when().xpath("//order/total > 100")
        .to("direct:processOrder")
    .otherwise()
        .throwException(new InvalidOrderTotalException());

void initRouter(@Observes Router router) {
    // Custom 404 handler
    router.errorHandler(404, new Handler<RoutingContext>() {
        @Override
        public void handle(RoutingContext event) {
            event.response()
                .setStatusCode(404)
                .putHeader("Content-Type", "text/plain")
                .end("Sorry - resource not found");
        }
    });
}