Ruby

citi Developer OAuth2 Client Credentials Grant

See more OAuth2 Examples

Get access token for your application credentials. You can use this for citi APIs which do not require customer credential verification and consent (e.g. Onboarding). Ruby

require 'chilkat'

success = false

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

http = Chilkat::CkHttp.new()

# Implements the following CURL command:

# curl --request POST \
#   --url https://sandbox.apihub.citi.com/gcb/api/clientCredentials/oauth2/token/us/gcb \
#   --header 'accept: application/json' \
#   --user client-id:client-secret \
#   --header 'content-type: application/x-www-form-urlencoded' \
#   --data 'grant_type=client_credentials&scope=%2Fapi'

http.put_Login("client-id")
http.put_Password("client-secret")

req = Chilkat::CkHttpRequest.new()
req.put_HttpVerb("POST")
req.put_Path("/gcb/api/clientCredentials/oauth2/token/us/gcb")
req.put_ContentType("application/x-www-form-urlencoded")
req.AddParam("grant_type","client_credentials")
req.AddParam("scope","/api")
req.AddHeader("accept","application/json")

resp = Chilkat::CkHttpResponse.new()
success = http.HttpReq("https://sandbox.apihub.citi.com/gcb/api/clientCredentials/oauth2/token/us/gcb",req,resp)
if (success == false)
    print http.lastErrorText() + "\n";
    exit
end

sbResponseBody = Chilkat::CkStringBuilder.new()
resp.GetBodySb(sbResponseBody)
jResp = Chilkat::CkJsonObject.new()
jResp.LoadSb(sbResponseBody)
jResp.put_EmitCompact(false)

print "Response Body:" + "\n";
print jResp.emit() + "\n";

respStatusCode = resp.get_StatusCode()
print "Response Status Code = " + respStatusCode.to_s() + "\n";
if (respStatusCode >= 400)
    print "Response Header:" + "\n";
    print resp.header() + "\n";
    print "Failed." + "\n";
    exit
end

success = jResp.WriteFile("qa_data/tokens/citi_client_credentials.json")
if (success == false)
    print "Failed to save JSON access token file." + "\n";
    exit
end

#  Sample JSON response:
#  (Sample code for parsing the JSON response is shown below)

#  {
#    "token_type": "bearer",
#    "access_token": "AAIkMjdh ... 3fsWb7zJ0s",
#    "expires_in": 1800,
#    "consented_on": 1584817860,
#    "scope": "/api"
#  }

#  Sample code for parsing the JSON response...
#  Use the following online tool to generate parsing code from sample JSON:
#  Generate Parsing Code from JSON

token_type = jResp.stringOf("token_type")
access_token = jResp.stringOf("access_token")
expires_in = jResp.IntOf("expires_in")
consented_on = jResp.IntOf("consented_on")
scope = jResp.stringOf("scope")