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Merge pull request #89 from battags/CASC-200 

CASC-200 Introduce Properties File Configuration Option
This commit is contained in:
Scott 2014-12-22 22:10:50 -05:00
parent d7ca6a098e 39f0f29dd9
commit 0b220c6f55
2 changed files with 84 additions and 1 deletions
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2
cas-client-core/src/main/java/org/jasig/cas/client/configuration/ConfigurationStrategyName.java
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@ -13,7 +13,7 @@ import org.slf4j.LoggerFactory;
*/
public enum ConfigurationStrategyName {
DEFAULT(LegacyConfigurationStrategyImpl.class), JNDI(JndiConfigurationStrategyImpl.class), WEB_XML(WebXmlConfigurationStrategyImpl.class);
DEFAULT(LegacyConfigurationStrategyImpl.class), JNDI(JndiConfigurationStrategyImpl.class), WEB_XML(WebXmlConfigurationStrategyImpl.class), PROPERTY_FILE(PropertiesConfigurationStrategyImpl.class);
private static final Logger LOGGER = LoggerFactory.getLogger(ConfigurationStrategyName.class);

83
cas-client-core/src/main/java/org/jasig/cas/client/configuration/PropertiesConfigurationStrategyImpl.java Normal file
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@ -0,0 +1,83 @@
package org.jasig.cas.client.configuration;
import org.jasig.cas.client.util.CommonUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.Filter;
import javax.servlet.FilterConfig;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;
/**
* @author Scott Battaglia
* @since 3.4.0
*/
public final class PropertiesConfigurationStrategyImpl extends BaseConfigurationStrategy {
/**
* Property name we'll use in the {@link javax.servlet.FilterConfig} and {@link javax.servlet.ServletConfig} to try and find where
* you stored the configuration file.
*/
private static final String CONFIGURATION_FILE_LOCATION = "configFileLocation";
/**
* Default location of the configuration file. Mostly for testing/demo. You will most likely want to configure an alternative location.
*/
private static final String DEFAULT_CONFIGURATION_FILE_LOCATION = "/etc/java-cas-client.properties";
private static final Logger LOGGER = LoggerFactory.getLogger(PropertiesConfigurationStrategyImpl.class);
private String simpleFilterName;
private Properties properties = new Properties();
@Override
protected String get(final ConfigurationKey configurationKey) {
final String property = configurationKey.getName();
final String filterSpecificProperty = this.simpleFilterName + "." + property;
final String filterSpecificValue = this.properties.getProperty(filterSpecificProperty);
if (CommonUtils.isNotEmpty(filterSpecificValue)) {
return filterSpecificValue;
}
return this.properties.getProperty(property);
}
public void init(final FilterConfig filterConfig, final Class<? extends Filter> filterClazz) {
this.simpleFilterName = filterClazz.getSimpleName();
final String fileLocationFromFilterConfig = filterConfig.getInitParameter(CONFIGURATION_FILE_LOCATION);
final boolean filterConfigFileLoad = loadPropertiesFromFile(fileLocationFromFilterConfig);
if (!filterConfigFileLoad) {
final String fileLocationFromServletConfig = filterConfig.getServletContext().getInitParameter(CONFIGURATION_FILE_LOCATION);
final boolean servletContextFileLoad = loadPropertiesFromFile(fileLocationFromServletConfig);
if (!servletContextFileLoad) {
final boolean defaultConfigFileLoaded = loadPropertiesFromFile(DEFAULT_CONFIGURATION_FILE_LOCATION);
CommonUtils.assertTrue(defaultConfigFileLoaded, "unable to load properties to configure CAS client");
}
}
}
private boolean loadPropertiesFromFile(final String file) {
if (CommonUtils.isEmpty(file)) {
return false;
}
FileInputStream fis = null;
try {
fis = new FileInputStream(file);
this.properties.load(fis);
return true;
} catch (final IOException e) {
LOGGER.warn("Unable to load properties for file {}", file, e);
return false;
} finally {
CommonUtils.closeQuietly(fis);
}
}
}