Integration with URL Shortener

d) Integration with URL Shortener - Integration with URL shortener requires the following steps -

i) Create a new class by the name of UrlShortnerUtil

ii) Annotate this class with @Component and add the following code -

@Autowired
private RestTemplate restTemplate;

@Autowired
private VTRConfiguration config;

public String getShortenedUrl(String url){

  HashMap<String,String> body = new HashMap<>();
  body.put("url",url);
  StringBuilder builder = new StringBuilder(config.getUrlShortnerHost());
  builder.append(config.getUrlShortnerEndpoint());
  String res = restTemplate.postForObject(builder.toString(), body, String.class);

  if(StringUtils.isEmpty(res)){
    log.error("URL_SHORTENING_ERROR", "Unable to shorten url: " + url); ;
    return url;
  }
  else return res;
}

iii) Add the following properties in application.properties file -

#url shortner
egov.url.shortner.host=https://dev.digit.org
egov.url.shortner.endpoint=/egov-url-shortening/shortener