com.genexus.db.driver.ExternalProviderBase Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of gxexternalproviders Show documentation
Core classes for the runtime used by Java and Android apps generated with GeneXus
The newest version!
package com.genexus.db.driver;

import com.genexus.util.Encryption;
import com.genexus.util.GXService;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public abstract class ExternalProviderBase {
	private static Logger logger = LogManager.getLogger(ExternalProviderBase.class);
	private GXService service;

	abstract String getName();

	static final String DEFAULT_ACL = "DEFAULT_ACL";
	static final String DEFAULT_EXPIRATION = "DEFAULT_EXPIRATION";
	static final String FOLDER = "FOLDER_NAME";

	@Deprecated
	static final String DEFAULT_ACL_DEPRECATED = "STORAGE_PROVIDER_DEFAULT_ACL";
	@Deprecated
	static final String DEFAULT_EXPIRATION_DEPRECATED = "STORAGE_PROVIDER_DEFAULT_EXPIRATION";

	static final int DEFAULT_EXPIRATION_MINUTES = 24 * 60;
	 ResourceAccessControlList defaultAcl = ResourceAccessControlList.PublicRead;

	public ExternalProviderBase() {
		init();
	}

	public ExternalProviderBase(GXService s) {
		this.service = s;
		init();
	}

	private void init() {
		String aclS = getPropertyValue(DEFAULT_ACL, DEFAULT_ACL_DEPRECATED, "");
		if (aclS.length() > 0) {
			this.defaultAcl = ResourceAccessControlList.parse(aclS);
		}
	}

	public String getEncryptedPropertyValue(String propertyName, String alternativePropertyName) throws Exception {
		String value = getEncryptedPropertyValue(propertyName, alternativePropertyName, null);
		if (value == null) {
			String errorMessage = String.format("Service configuration error - Property name %s must be defined", resolvePropertyName(propertyName));
			logger.fatal(errorMessage);
			throw new Exception(errorMessage);
		}
		return value;
	}

	public String getEncryptedPropertyValue(String propertyName, String alternativePropertyName, String defaultValue) {
		String encryptedOrUnEncryptedValue = getPropertyValue(propertyName, alternativePropertyName, defaultValue);
		String decryptedValue = encryptedOrUnEncryptedValue;
		if (encryptedOrUnEncryptedValue != null && encryptedOrUnEncryptedValue.length() > 0) {
			try {
				String decryptedTemp = Encryption.tryDecrypt64(encryptedOrUnEncryptedValue);
				decryptedValue = (decryptedTemp != null) ? decryptedTemp: encryptedOrUnEncryptedValue;
			}
			catch (Exception e) {
				logger.warn("Could not decrypt property name: " + resolvePropertyName(propertyName));
			}
		}
		return decryptedValue;
	}

	public String getPropertyValue(String propertyName, String alternativePropertyName) throws Exception{
		String value = getPropertyValue(propertyName, alternativePropertyName, null);
		if (value == null) {
			String errorMessage = String.format("Service configuration error - Property name %s must be defined", resolvePropertyName(propertyName));
			logger.fatal(errorMessage);
			throw new Exception(errorMessage);
		}
		return value;
	}

	public String getPropertyValue(String propertyName, String alternativePropertyName, String defaultValue) {
		String value = readFromEnvVars(propertyName, alternativePropertyName);
		if (value != null) {
			return value;
		}
		String resolvedPtyName = resolvePropertyName(propertyName);
		if (service != null) {
			value = this.service.getProperties().get(resolvedPtyName);
			if (value == null || value.length() == 0) {
				value = this.service.getProperties().get(alternativePropertyName);
			}
		}
		return value != null? value: defaultValue;
	}

	private String readFromEnvVars(String propertyName, String alternativePropertyName) {
		if (service != null && !service.getAllowOverrideWithEnvVarSettings()){
			return null;
		}

		String value = System.getenv(resolvePropertyName(propertyName));
		if (value == null){
			value = System.getenv(alternativePropertyName);
		}
		return value;
	}

	private String resolvePropertyName(String propertyName) {
		return String.format("STORAGE_%s_%s", getName(), propertyName);
	}

}