private HttpCachingConfig(SolrConfig conf) {
never304 = conf.getBool(CACHE_PRE + "@never304", false);
etagSeed = conf.get(CACHE_PRE + "@etagSeed", "Solr");
lastModFrom = LastModFrom.parse(conf.get(CACHE_PRE + "@lastModFrom", "openTime"));
cacheControlHeader = conf.get(CACHE_PRE + "cacheControl", null);
Long tmp = null; // maxAge
if (null != cacheControlHeader) {
try {
final Matcher ttlMatcher = MAX_AGE.matcher(cacheControlHeader);
final String ttlStr = ttlMatcher.find() ? ttlMatcher.group(1) : null;
tmp = (null != ttlStr && !"".equals(ttlStr)) ? Long.valueOf(ttlStr) : null;
} catch (Exception e) {
log.warn(
"Ignoring exception while attempting to "
+ "extract max-age from cacheControl config: "
+ cacheControlHeader,
e);
}
}
maxAge = tmp;
}
