private static ResourceStreamSourceChainOfResponsibility createComposite(
final List<ResourceStreamSource> resourceStreamSources) {
final ResourceStreamSourceChainOfResponsibility composite =
new ResourceStreamSourceChainOfResponsibility();
for (final ResourceStreamSource rss : resourceStreamSources) {
if (rss == null) {
continue;
}
composite.addResourceStreamSource(rss);
}
return composite;
}
/**
* Loads the configuration resource (usually, a file) with the specified name from the first
* {@link ResourceStreamSource} available.
*
* <p>If the configuration resource cannot be found then the provided {@link NotFoundPolicy}
* determines whether an exception is thrown or not.
*/
private void loadConfigurationResource(
final String configurationResource,
final NotFoundPolicy notFoundPolicy,
final IsisConfigurationDefault.ContainsPolicy containsPolicy) {
try {
final PropertiesReader propertiesReader =
loadConfigurationResource(resourceStreamSourceChain, configurationResource);
LOG.info("loading properties from " + configurationResource);
configuration.add(propertiesReader.getProperties(), containsPolicy);
configurationResourcesFound.add(configurationResource);
return;
} catch (final IOException ignore) {
// ignore
}
if (notFoundPolicy == NotFoundPolicy.FAIL_FAST) {
throw new IsisException(
String.format(
"failed to load '%s'; tried using: %s",
configurationResource, resourceStreamSourceChain.getName()));
}
configurationResourcesNotFound.add(configurationResource);
if (LOG.isDebugEnabled()) {
LOG.debug(String.format("'%s' not found, but not needed", configurationResource));
}
}