@Override
public void init(@Nonnull FilterConfig filterConfig) throws ServletException {
final String mapping = filterConfig.getInitParameter(MAPPING_INIT_ATTRIBUTE);
if (mapping != null) {
setMapping(mapping);
}
final String registryRef = filterConfig.getInitParameter(REGISTRY_REF_INIT_ATTRIBUTE);
if (!isEmpty(registryRef)) {
setRegistry(getBeanFor(filterConfig.getServletContext(), registryRef, JmxRegistry.class));
}
final String interceptor = filterConfig.getInitParameter(INTERCEPTOR_INIT_ATTRIBUTE);
if (!isEmpty(interceptor)) {
setInterceptor(loadInterceptor(interceptor));
}
final String interceptorRef = filterConfig.getInitParameter(INTERCEPTOR_REF_INIT_ATTRIBUTE);
if (!isEmpty(interceptorRef)) {
setInterceptor(
getBeanFor(
filterConfig.getServletContext(), interceptorRef, ServletHealthInterceptor.class));
}
handleHostIncludeExcludesIfNeeded(filterConfig);
init();
}
protected void handleHostIncludeExcludesIfNeeded(@Nonnull FilterConfig filterConfig) {
final String includeHosts = filterConfig.getInitParameter(INCLUDES_HOSTS);
final String excludeHosts = filterConfig.getInitParameter(EXCLUDES_HOSTS);
if (!isEmpty(includeHosts) || !isEmpty(excludeHosts)) {
final ServletHealthInterceptor originalInterceptor = getInterceptor();
final AllowedHostsServletHealthInterceptor newInterceptor =
new AllowedHostsServletHealthInterceptor();
newInterceptor.setIncludesPattern(includeHosts);
newInterceptor.setExcludesPattern(excludeHosts);
setInterceptor(
originalInterceptor != null
? new CombinedServletHealthInterceptor(originalInterceptor, newInterceptor)
: newInterceptor);
}
}