This class helps to convert a property file entries into cloudformation script to add them as SSM::Parameter

ConvertPropertiesToCfn.java

package java_experiments;

import java.io.IOException;
import java.io.InputStream;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Properties;

/*
 * This class helps to convert a property file entries into cloudformation script to add them as SSM::Parameter
 */
public class ConvertPropertiesToCfn {

	public static void main(String[] args) throws IOException{
		processProperties();
	}

	private static void processProperties() throws IOException {
		String propFileName = "env.properties";
		Map<String, String> prop = null;
		try(var inStream = ConvertPropertiesToCfn.class.getClassLoader().getResourceAsStream(propFileName)){
			prop = getOrderedProperties(inStream);
		}catch(IOException ie) {
			throw new RuntimeException("Could not read file");
		}
		
		StringBuffer strBuf = new StringBuffer(); 
		for (Object k : prop.keySet()) {
			String key = (String) k ;
			String value = prop.get(key);
			strBuf.append("\n");
			strBuf.append(String.format("  %s: ",toCamelCase(key)));
			strBuf.append("\n");
			strBuf.append("    Type: \"AWS::SSM::Parameter\" ");
			strBuf.append("\n");
			strBuf.append("    Properties: ");
			strBuf.append("\n");
			strBuf.append(String.format("      Name: \"%s/service-web/%s\" ","stage",key));
			strBuf.append("\n");
			if (value.equals("REQUEST_VALUE")) {
				strBuf.append("      Type: \"SecureString\" ");
			}else {
				strBuf.append("      Type: \"String\" ");
			}
			strBuf.append("\n");
			strBuf.append(String.format("      Value: \"%s\" ",value));
			strBuf.append("\n");
			strBuf.append(" ");
			strBuf.append("\n");
		}
		System.out.println(strBuf);
	}
	
	static String toCamelCase(String s){
	   String[] parts = s.split("_");
	   String camelCaseString = "";
	   for (String part : parts){
	      camelCaseString = camelCaseString + toProperCase(part);
	   }
	   return camelCaseString;
	}

	static String toProperCase(String s) {
	    return s.substring(0, 1).toUpperCase() +
	               s.substring(1).toLowerCase();
	}
	
	public static Map<String, String> getOrderedProperties(InputStream in) throws IOException{
	    Map<String, String> mp = new LinkedHashMap<>();
	    (new Properties(){
	        public synchronized Object put(Object key, Object value) {
	            return mp.put((String) key, (String) value);
	        }
	    }).load(in);
	    return mp;
	}	
}