prompto.config.auth.AuthenticationConfiguration Maven / Gradle / Ivy

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package prompto.config.auth;

import java.util.Collection;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import com.esotericsoftware.yamlbeans.YamlException;
import com.esotericsoftware.yamlbeans.document.YamlMapping;
import com.esotericsoftware.yamlbeans.document.YamlSequence;

import prompto.config.IConfigurationReader;
import prompto.config.auth.method.AuthenticationMethodConfiguration;
import prompto.config.auth.method.IAuthenticationMethodConfiguration;
import prompto.config.auth.source.AuthenticationSourceConfiguration;
import prompto.config.auth.source.IAuthenticationSourceConfiguration;
import prompto.security.auth.method.BasicAuthenticationMethodFactory;
import prompto.security.auth.source.IAuthenticationSourceFactory;

public class AuthenticationConfiguration extends IAuthenticationConfiguration.Inline {

	IConfigurationReader reader;
	
	public AuthenticationConfiguration(IConfigurationReader reader) {
		this.reader = reader;
		this.authenticationSourceConfiguration = ()->readAuthenticationSourceConfiguration();
		this.authenticationMethodConfiguration = ()->readAuthenticationMethodConfiguration();
		this.whiteList = ()->readWhiteList();
	}

	private Collection readWhiteList() {
		Collection list = reader.getArray("whiteList");
		if(list==null)
			return DEFAULT_WHITE_LIST;
		boolean useDefaultWhiteList = reader.getBooleanOrDefault("useDefaultWhiteList", true);
		if(useDefaultWhiteList) 
			return Stream.concat(list.stream(), DEFAULT_WHITE_LIST.stream()).collect(Collectors.toList());
		else
			return list;
	}

	private IAuthenticationSourceConfiguration readAuthenticationSourceConfiguration() {
		IConfigurationReader child = reader.getObject("source");
		return child==null ? null : readAuthenticationSourceConfiguration(child);
	}
	
	private IAuthenticationSourceConfiguration readAuthenticationSourceConfiguration(IConfigurationReader reader) {
		String className = reader.getString("factory");
		if(className==null)
			return new AuthenticationSourceConfiguration(reader);
		else try {
			return IAuthenticationSourceFactory.newFactory(className).newConfiguration(reader);
		} catch(Throwable t) {
			throw new RuntimeException(t);
		}
	}

	private IAuthenticationMethodConfiguration readAuthenticationMethodConfiguration() {
		IConfigurationReader child = reader.getObject("method");
		// default to BASIC authentication method
		if(child==null)
			return ()->new BasicAuthenticationMethodFactory();
		else
			return new AuthenticationMethodConfiguration(child);
	}
	
	@Override
	public YamlMapping toYaml() throws YamlException {
		YamlMapping yaml = new YamlMapping();
		IAuthenticationSourceConfiguration source = authenticationSourceConfiguration.get();
		if(source!=null)
			yaml.setEntry("source", source.getAuthenticationSourceFactory().toYaml());
		IAuthenticationMethodConfiguration method = authenticationMethodConfiguration.get();
		if(method!=null)
			yaml.setEntry("method", method.getAuthenticationMethodFactory().toYaml());
		Collection whiteList = reader.getArray("whiteList");
		if(whiteList!=null) {
			YamlSequence sequence = new YamlSequence();
			for(String entry : whiteList)
				sequence.addElement(entry);
			yaml.setEntry("whiteList", sequence);
		}
		return yaml;
	}

}