Hello everyone, please how can I call an endpoint in a `GET route` in `ktor` example: `<https://ap...

# getting-started

[Aminu Babayo Shehu]

Hello everyone, please how can I call an endpoint in a GET route in ktor example: <https://api.paystack.co/transaction/verify/353532> and after I called it, how can I get the response in form of json

[August Lilleaas]

you can use the ktor http client, which are available as separate modules from the ktor server package

https://ktor.io/docs/create-client.html

[Aminu Babayo Shehu]

get("/payments/verify/paystack/{ref}") {
    val ref = call.parameters["ref"] ?: return@get call.respondText("Missing or malformed ref", status = HttpStatusCode.BadRequest)

    //verify
    val client = HttpClient(CIO)
    val response = client.get("<https://api.paystack.co/transaction/verify/${ref}>") {
        header("Authorization", "Bearer sk_test_4ty6ggfb5c94ef56c888fd576bd06841ac3f9fc364118f")

    call.respond(response)

}

[Aminu Babayo Shehu]

above is how I’m doing it but I’m not getting the reponse

[August Lilleaas]

does that code compile? I would expect that you would need to extract values from response instead of forwarding it wholesale to call.respond()

[Aminu Babayo Shehu]

so, please any idea on how to extract it?

[August Lilleaas]

the response value is documented here: https://ktor.io/docs/response.html

[Aminu Babayo Shehu]

ohk, thank you

[Thomas Urbanitsch]

are you missing a } in the snippet you shared before your call.respond call?

but in general break it it up in pieces and
1. make sure your response from the ktor client part is working properly (e.g. a breakpoint on call.respond should give you that info), before thinking about
2. your ktor server part (call.respond) returning a json of what you received with your client

[Aminu Babayo Shehu]

Yes, Sir @Thomas Urbanitsch I for got copy the }

[Aminu Babayo Shehu]

Let me share the response of the json please

[Aminu Babayo Shehu]

This is what I’m getting

[Thomas Urbanitsch]

(in general i’m not sure what your snippet does but i would probably not share any tokens in an open slack community 😄 some “payments” api i don’t know + a hardcoded bearer token might get ppl interested)

[Aminu Babayo Shehu]

Instead of

{
  "status": "success",
  "message": "Transaction fetched successfully",
  "data": {
    "id": 1163068,
    "tx_ref": "akhlm-pstmn-blkchrge-xx6",
    "flw_ref": "FLW-M03K-02c21a8095c7e064b8b9714db834080b",
    "device_fingerprint": "N/A",
    "amount": 3000,
    "currency": "NGN",
    "charged_amount": 3000,
    "app_fee": 1000,
    "merchant_fee": 0,
    "processor_response": "Approved",
    "auth_model": "noauth",
    "ip": "pstmn",
    "narration": "Kendrick Graham",
    "status": "successful",
    "payment_type": "card",
    "created_at": "2020-03-11T19:22:07.000Z",
    "account_id": 73362,
    "amount_settled": 2000,
    "card": {
      "first_6digits": "553188",
      "last_4digits": "2950",
      "issuer": " CREDIT",
      "country": "NIGERIA NG",
      "type": "MASTERCARD",
      "token": "flw-t1nf-f9b3bf384cd30d6fca42b6df9d27bd2f-m03k",
      "expiry": "09/22"
    },
    "customer": {
      "id": 252759,
      "name": "Kendrick Graham",
      "phone_number": "0813XXXXXXX",
      "email": "<mailto:[e-mail]|[e-mail]>",
      "created_at": "2020-01-15T13:26:24.000Z"
    }
  }
}

[Thomas Urbanitsch]

yes, you are getting a HttpResponse because thats what your response val is, returned by the ktor client

Which is mentioned in the response link @August Lilleaas shared already. Which also explains how to get the body of that HttpResponse

[Aminu Babayo Shehu]

okay, thank you all

[Aminu Babayo Shehu]

Thank you all, I read the string using

jacksonObjectMapper().readTree(stringBody)