Cloud

Question 1

Struktura OCI (6)

Answer 1

OS
docker - virtualni kontejner
kubernetes - orchestrator dockeru
jvm - v kazdem dockeru
java server - automatizace
java kod

Question 2

Http request - metody (4) + metody pro metadata (2)

Answer 2

get (default)
post (insert)
put (update)
delete

head, options

Question 3

Http response - statusy (5)

Answer 3

100 - info
200 - success
300 - redirect
400 - client error
500 - server error

Question 4

Http response syntax pro zpravu “This,is,message” v UTF-8

Answer 4

header + nepovinne body
HTTP/1.1 200 OK
Content-Type: “text/plain; charset=UTF-8”
Content-Length: 123
Date: … GMT
This,is,message

Question 5

Http request syntax pro www.sample.com/product/1

Answer 5

GET /product/1 HTTP/1.1
Host: www.sample.com

Question 6

REST co to je, jake muzou byt formaty message

Answer 6

Resource based application; kazdy resource ma svoji entitu s url a operacemi
plain text, json, xml, …

Question 7

REST handler syntax: nacti parametr “id” a posli zpet message “processing {id}”

Answer 7

Handler handler = (ServerRequest req, ServerResponse res) -> {
String id = req.path().param(“id”);
res.status(Http.Status.OK_200);
res.headers().put(“Content-Type”, “text/plain; charset=UTF-8”);
res.send(“processing “ + id);
};

Question 8

REST routing syntax pro prirazeni handleru:
“/” - welcome()
“/products” - DELETE - deleteProducts()

Answer 8

Routing routing = Rounting.builder()
.any(“/”, welcome())
.delete(“/products”, deleteProducts())
.build();

Question 9

REST routing - any - jak zapises lambdou poslani “message”

Answer 9

.any((req, res) -> res.status(200).send(“message”))

Question 10

REST server configuration pro localhost:8080 syntax

Answer 10

ServerConfiguration config = ServerConfiguration.builder()
.bindAddress(InetAddress.getLocalHost())
.port(8080)
.build();

Question 11

REST web server - vyrob a spust

Answer 11

WebServer ws = new WebServer(serverConfiguration, routing);
ws.start();