SnakeYAML Parse Example

app.yml

applications:
  authentication:
    serviceVersion: 2.0
    serviceUrl: https://myapp.corp/auth
    appEnv: DEV
    timeoutInMs: 5000
    enableLog: true

  service1:
    enableLog: true
    authRequired: true
    appEnv: DEV
    timeoutInMs: 5000
    serviceUrl: https://myapp.corp/service1
    serviceName: SomeService1
    serviceVersion: 1.1
    serviceNamespace: http://myapp.corp/ns/service1

  service2:
    enableLog: true
    authRequired: true
    appEnv: DEV
    timeoutInMs: 5000
    serviceUrl: https://myapp.corp/service2
    serviceName: SomeService2
    serviceVersion: 2.0
    serviceNamespace: http://myapp.corp/ns/service2

ParseSample.java

package com.marceldias.mars.yaml;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;


import org.yaml.snakeyaml.TypeDescription;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.Constructor;

public class ParseSample {

	public static void main(String... a) {
		Constructor constructor = new Constructor(YamlConfig.class);
		Yaml yaml = new Yaml( constructor );

		InputStream input = null;
		try {
			input = new FileInputStream(new File("/tmp/apps.yml"));
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		YamlConfig data = yaml.loadAs( input, YamlConfig.class );
		System.out.println( data );
		System.out.println( yaml.dump( data ));
	}
}

ServiceConfig.java

public class ServiceConfig {

	private Boolean enableLog;
	private Boolean authRequired;
	private String appEnv;
	private Integer timeoutInMs;
	private String serviceUrl;
	private String serviceName;
	private String serviceVersion;
	private String serviceNamespace;

	public Boolean getEnableLog() {
		return enableLog;
	}

	public void setEnableLog(Boolean enableLog) {
		this.enableLog = enableLog;
	}

	public Boolean getAuthRequired() {
		return authRequired;
	}

	public void setAuthRequired(Boolean authRequired) {
		this.authRequired = authRequired;
	}

	public String getAppEnv() {
		return appEnv;
	}

	public void setAppEnv(String appEnv) {
		this.appEnv = appEnv;
	}

	public Integer getTimeoutInMs() {
		return timeoutInMs;
	}

	public void setTimeoutInMs(Integer timeoutInMs) {
		this.timeoutInMs = timeoutInMs;
	}

	public String getServiceUrl() {
		return serviceUrl;
	}

	public void setServiceUrl(String serviceUrl) {
		this.serviceUrl = serviceUrl;
	}

	public String getServiceName() {
		return serviceName;
	}

	public void setServiceName(String serviceName) {
		this.serviceName = serviceName;
	}

	public String getServiceVersion() {
		return serviceVersion;
	}

	public void setServiceVersion(String serviceVersion) {
		this.serviceVersion = serviceVersion;
	}

	public String getServiceNamespace() {
		return serviceNamespace;
	}

	public void setServiceNamespace(String serviceNamespace) {
		this.serviceNamespace = serviceNamespace;
	}
}

YamlConfig.java

import java.util.Map;

public class YamlConfig {

	Map<String, ServiceConfig> applications;

	public Map<String, ServiceConfig> getApplications() {
		return applications;
	}

	public void setApplications(Map<String, ServiceConfig> applications) {
		this.applications = applications;
	}

	@Override public String toString() {
		return "YamlConfig{" +
				"applications=" + applications +
				'}';
	}
}