// Get OAuth token from STS
public String getToken(String username, String password, String realm, String endpoint) {
HttpRequest req = new HttpRequest();
req.setMethod('POST');
req.setEndpoint(endpoint);
req.setHeader('content-type', FORM_URL_ENCODED);
req.setBody(formatRequest(username, password, realm));
req.setTimeout(2000);
Http http = new Http();
String result = '';
try {
HttpResponse res = http.send(req);
Integer statusCode = res.getStatusCode();
if (statusCode != 200) {
throw new myException('Request failed; Http Status Code = ' + statusCode);
}
result = res.getBody();
statusCode = res.getStatusCode();
} catch(System.CalloutException e) {
// log and/or handle exception
System.debug(e.getStackTraceString());
// re-throw exception
throw(e);
}
return result;
}
// format body/message of OAuth token request
private String formatRequest(String username, String password, String realm) {
String[] args = new String[] {EncodingUtil.urlEncode(username,'UTF-8'), EncodingUtil.urlEncode(password,'UTF-8'), EncodingUtil.urlEncode(realm,'UTF-8')};
String format = 'wrap_name={0}&wrap_password={1}&wrap_scope={2}';
return String.format(format, args);
}
// format raw response from OAuth token request
private String formatToken(string rawResponse) {
String temp = 'wrap_access_token=';
Integer index = temp.Length();
String rawToken = EncodingUtil.urlDecode(rawResponse.split('&')[0], 'UTF-8');
String token = rawToken.substring(index, rawToken.length());
return 'WRAP access_token="' + token + '"';
}
// Get student requirements
public String getStudentRequirements(String token, String studentId, String awardYear) {
HttpRequest req = new HttpRequest();
req.setMethod('GET');
// Note: retrieve root URL from configuration
req.setEndpoint('[root url]/studentrequirements/' + studentId + '?awardyear=' + awardYear);
req.setHeader('Authorization', token);
req.setHeader('Accept', 'application/json');
req.setTimeout(2000);
Http http = new Http();
String result = '';
try {
HttpResponse res = http.send(req);
Integer statusCode = res.getStatusCode();
if (statusCode != 200) {
throw new myException('Request failed; Http Status Code = ' + statusCode);
}
result = res.getBody();
} catch(System.CalloutException e) {
// log and/or handle exception
System.debug(e);
// re-throw exception
throw(e);
}
return result;
}
