code: package io.ray.serve.deployment;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class ExampleEchoDeployment {
    String prefix;
    String suffix = "";
    private static final Logger LOGGER = LoggerFactory.getLogger(ExampleEchoDeployment.class);
  
    public ExampleEchoDeployment(Object prefix) {
      LOGGER.info("recieve init args: {}", prefix);
      this.prefix = (String) prefix;
    }
  
    public String call(Object input) {
      LOGGER.info("recieve call request: {}", input);
      return this.prefix + input + this.suffix;
    }
  
    public boolean checkHealth() {
      return true;
    }
  
    public Object reconfigure(Object userConfig) {
      LOGGER.info("recieve userconfig: {}", userConfig);
      if (null != userConfig) {
        this.suffix = userConfig.toString();
      }
      return null;
    }
  }
  