Firebase Admin SDK configuration

FirebaseConfig.java

import com.google.auth.oauth2.GoogleCredentials;
import com.google.firebase.FirebaseApp;
import com.google.firebase.FirebaseOptions;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ResourceLoader;

import java.io.InputStream;

/**
 * @author nvtuan
 * @since 11/16/18
 */
@Configuration
public class FirebaseConfig implements InitializingBean {

    @Value("${fcm.serviceAccountPath}")
    private String serviceAccountPath;

    private ResourceLoader resourceLoader;

    @Autowired
    public FirebaseConfig(ResourceLoader resourceLoader) {
        this.resourceLoader = resourceLoader;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        initializeSDK();
    }

    private void initializeSDK() {
        try {
            InputStream inputStream = resourceLoader.getResource(serviceAccountPath).getInputStream();
            FirebaseOptions options = new FirebaseOptions.Builder()
                    .setCredentials(GoogleCredentials.fromStream(inputStream))
                    .build();
            FirebaseApp.initializeApp(options);
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}