La traducción del material se preparó la víspera del inicio del curso en línea de pruebas de estrés.
4. Aplicación en prueba: base de datos de videojuegos
(Video Game Database). , , . API, Swagger, HTTP- (Get, Put, Update, Delete) XML JSON .
Gradle —
./gradlew bootRun
Maven —
mvn spring-boot:run
, : http://localhost:8080/swagger-ui/index.html#/
Swagger , - :
API Swagger, XML JSON.
: ( ) , AWS. , , , , AWS , , , , !
, , Gatling.
5. Gatling
Gatling . scala , Gatling . simulations.
5.1 Gatling
Scala
MyFirstTest
. :
package simulations
import io.gatling.core.Predef._
import io.gatling.http.Predef._
class MyFirstTest extends Simulation {
// 1 Http Conf ( Http)
val httpConf = http.baseUrl("http://localhost:8080/app/")
.header("Accept", "application/json")
.proxy(Proxy("localhost", 8888))
// 2 Scenario Definition ( )
val scn = scenario("My First Test")
.exec(http("Get All Games")
.get("videogames"))
// 3 Load Scenario ( )
setUp(
scn.inject(atOnceUsers(1))
).protocols(httpConf)
}
Gatling, . http://localhost:8080/app/videogames.
:
5.1.1
:
import io.gatling.core.Predef._
import io.gatling.http.Predef._
Gatling - Gatling.
5.1.2 Extends Simulation
, Scala
Gatling Simulation
:
class MyFirstTest extends Simulation {
, Gatling, Simulation Gatling.
, 3 :
5.1.3 HTTP (Http Conf)
, , HTTP Gatling.
HTTP :
// 1 Http Conf
val httpConf = http.baseUrl("http://localhost:8080/app/")
.header("Accept", "application/json")
baseUrl
, API .
(header), , Accept -> application/json.
HTTP - Gatling HTTP.
5.1.4 (Scenario Definition)
Gatling, (user journey). , , :
5
POST-
. .
GET videogames. , http://localhost:8080/app/videogames, baseUrl HTTP :
// 2 Scenario Definition ( )
val scn = scenario("My First Test")
.exec(http("Get All Games")
.get("videogames"))
5.1.5 -
Gatling — . (, , . .) Gatling. , , .
// 3 Load Scenario ( )
setUp(
scn.inject(atOnceUsers(1))
).protocols(httpConf)
Gatling! , Engine
MyFirstTest
:
3 Gatling:
HTTP
, Gatling:
5.2
(pause) . HTTP.
Scala simulations CheckResponseCode
. :
package simulations
import io.gatling.core.Predef._
import io.gatling.http.Predef._
import scala.concurrent.duration.DurationInt
class CheckResponseCode extends Simulation {
val httpConf = http.baseUrl("http://localhost:8080/app/")
.header("Accept", "application/json")
val scn = scenario("Video Game DB - 3 calls")
.exec(http("Get all video games - 1st call")
.get("videogames")
.check(status.is(200)))
.pause(5)
.exec(http("Get specific game")
.get("videogames/1")
.check(status.in(200 to 210)))
.pause(1, 20)
.exec(http("Get all Video games - 2nd call")
.get("videogames")
.check(status.not(404), status.not(500)))
.pause(3000.milliseconds)
setUp(
scn.inject(atOnceUsers(1))
).protocols(httpConf)
}
5.2.1
3 API. videogames, videogames/1, videogames.
.
18 .pause(5)
- 5 .
24 .pause(1, 20)
- 1 20 .
, 29 .pause(3000.milliseconds)
- , Gatling 3000 . : Gatling milliseconds, scala.concurrent.duration.DurationInt
.
5.2.2
API Gatling , . , Gatling .
17 .check(status.is(200)))
- , - 200.
23 .check(status.in(200 to 210)))
, , 200 210.
, 28 , - .check(status.not(404, status.not(500)))
- , 404 500.
5.3 Gatling Check API
Check API Gatling :
, .
.
JSONPath . JSONPath , . API.
(correlation) .
simulations CheckResponseBodyAndExtract
. :
package simulations
import io.gatling.core.Predef._
import io.gatling.http.Predef._
class CheckResponseBodyAndExtract extends Simulation {
val httpConf = http.baseUrl("http://localhost:8080/app/")
.header("Accept", "application/json")
val scn = scenario("Check JSON Path")
// First call - check the name of the game
.exec(http("Get specific game")
.get("videogames/1")
.check(jsonPath("$.name").is("Resident Evil 4")))
// Second call - extract the ID of a game and save it to a variable called gameId
.exec(http("Get all video games")
.get("videogames")
.check(jsonPath("$[1].id").saveAs("gameId")))
// Third call - use the gameId variable saved from the above call
.exec(http("Get specific game")
.get("videogames/${gameId}")
.check(jsonPath("$.name").is("Gran Turismo 3"))
setUp(
scn.inject(atOnceUsers(1))
).protocols(httpConf)
}
3 API. JSONPath, , name JSON Resident Evil 4 :
.exec(http("Get specific game")
.get("videogames/1")
.check(jsonPath("$.name").is("Resident Evil 4")))
. . id , JSON (.. 1):
.exec(http("Get all video games")
.get("videogames")
.check(jsonPath("$[1].id").saveAs("gameId")))
, gameId
, URL- API:
.exec(http("Get specific game")
.get("videogames/${gameId}")
.check(jsonPath("$.name").is("Gran Turismo 3"))
Gatling, .check()
, .saveAs
5.4. Gatling
, , HTTP- . HTTP- , .
, .
simulations CodeReuseWithObjects
. :
package simulations
import io.gatling.core.Predef._
import io.gatling.http.Predef._
class CodeReuseWithObjects extends Simulation {
val httpConf = http.baseUrl("http://localhost:8080/app/")
.header("Accept", "application/json")
def getAllVideoGames() = {
repeat(3) {
exec(http("Get all video games - 1st call")
.get("videogames")
.check(status.is(200)))
}
}
def getSpecificVideoGame() = {
repeat(5) {
exec(http("Get specific game")
.get("videogames/1")
.check(status.in(200 to 210)))
}
}
val scn = scenario("Code reuse")
.exec(getAllVideoGames())
.pause(5)
.exec(getSpecificVideoGame())
.pause(5)
.exec(getAllVideoGames())
setUp(
scn.inject(atOnceUsers(1))
).protocols(httpConf)
}
API, . — getAllVideoGames()
:
def getAllVideoGames() = {
repeat(3) {
exec(http("Get all video games - 1st call")
.get("videogames")
.check(status.is(200)))
}
}
, repeat(3)
- , 3 ( 3 HTTP-).
HTTP- - :
def getSpecificVideoGame() = {
repeat(5) {
exec(http("Get specific game")
.get("videogames/1")
.check(status.in(200 to 210)))
}
}
repeat(5)
, 5 .
, :
val scn = scenario("Code reuse")
.exec(getAllVideoGames())
.pause(5)
.exec(getSpecificVideoGame())
.pause(5)
.exec(getAllVideoGames())
, . , Gatling API.