Root resource

    1. We just remap database results in page information entry objects.

    3. JsonObject#encode() gives a compact String representation of the JSON data.

    Getting a page

    1. private void apiGetPage(RoutingContext context) {
    2.   int id = Integer.valueOf(context.request().getParam("id"));
    3.   dbService.fetchPageById(id, reply -> {
    4.     JsonObject response = new JsonObject();
    5.     if (reply.succeeded()) {
    6.       JsonObject dbObject = reply.result();
    7.       if (dbObject.getBoolean("found")) {
    8.         JsonObject payload = new JsonObject()
    9.           .put("name", dbObject.getString("name"))
    10.           .put("id", dbObject.getInteger("id"))
    11.           .put("markdown", dbObject.getString("content"))
    12.           .put("html", Processor.process(dbObject.getString("content")));
    13.         response
    14.           .put("page", payload);
    15.         context.response().setStatusCode(200);
    16.       } else {
    18.         response
    19.           .put("success", false)
    20.           .put("error", "There is no page with ID " + id);
    21.       }
    22.     } else {
    23.       response
    24.         .put("success", false)
    25.         .put("error", reply.cause().getMessage());
    26.       context.response().setStatusCode(500);
    27.     }
    28.     context.response().putHeader("Content-Type", "application/json");
    29.     context.response().end(response.encode());
    30.   });
    31. }

    Creating a page

    1. private boolean validateJsonPageDocument(RoutingContext context, JsonObject page, String... expectedKeys) {
    2.   if (!Arrays.stream(expectedKeys).allMatch(page::containsKey)) {
    3.     LOGGER.error("Bad page creation JSON payload: " + page.encodePrettily() + " from " + context.request().remoteAddress());
    5.     context.response().end(new JsonObject()
    6.       .put("success", false)
    7.       .put("error", "Bad request payload").encode());
    8.     return false;
    9.   }
    10.   return true;
    11. }

    Updating a page

    The handleSimpleDbReply method is a helper for finishing the request processing:

    1. private void handleSimpleDbReply(RoutingContext context, AsyncResult<Void> reply) {
    2.   if (reply.succeeded()) {
    3.     context.response().setStatusCode(200);
    4.     context.response().putHeader("Content-Type", "application/json");
    5.     context.response().end(new JsonObject().put("success", true).encode());
    6.   } else {
    7.     context.response().setStatusCode(500);
    8.     context.response().putHeader("Content-Type", "application/json");
    9.     context.response().end(new JsonObject()
    10.       .put("success", false)
    11.       .put("error", reply.cause().getMessage()).encode());
    13. }

    Deleting a page