public void processGetVersions(ResponseBuilder rb) throws IOException {
SolrQueryRequest req = rb.req;
SolrQueryResponse rsp = rb.rsp;
SolrParams params = req.getParams();
if (!params.getBool(COMPONENT_NAME, true)) {
return;
}
int nVersions = params.getInt("getVersions", -1);
if (nVersions == -1) return;
String sync = params.get("sync");
if (sync != null) {
processSync(rb, nVersions, sync);
return;
}
UpdateLog ulog = req.getCore().getUpdateHandler().getUpdateLog();
if (ulog == null) return;
UpdateLog.RecentUpdates recentUpdates = ulog.getRecentUpdates();
try {
rb.rsp.add("versions", recentUpdates.getVersions(nVersions));
} finally {
recentUpdates.close(); // cache this somehow?
}
}
public void processGetUpdates(ResponseBuilder rb) throws IOException {
SolrQueryRequest req = rb.req;
SolrQueryResponse rsp = rb.rsp;
SolrParams params = req.getParams();
if (!params.getBool(COMPONENT_NAME, true)) {
return;
}
String versionsStr = params.get("getUpdates");
if (versionsStr == null) return;
UpdateLog ulog = req.getCore().getUpdateHandler().getUpdateLog();
if (ulog == null) return;
List<String> versions = StrUtils.splitSmart(versionsStr, ",", true);
List<Object> updates = new ArrayList<Object>(versions.size());
long minVersion = Long.MAX_VALUE;
// TODO: get this from cache instead of rebuilding?
UpdateLog.RecentUpdates recentUpdates = ulog.getRecentUpdates();
try {
for (String versionStr : versions) {
long version = Long.parseLong(versionStr);
try {
Object o = recentUpdates.lookup(version);
if (o == null) continue;
if (version > 0) {
minVersion = Math.min(minVersion, version);
}
// TODO: do any kind of validation here?
updates.add(o);
} catch (SolrException e) {
log.warn("Exception reading log for updates", e);
} catch (ClassCastException e) {
log.warn("Exception reading log for updates", e);
}
}
// Must return all delete-by-query commands that occur after the first add requested
// since they may apply.
updates.addAll(recentUpdates.getDeleteByQuery(minVersion));
rb.rsp.add("updates", updates);
} finally {
recentUpdates.close(); // cache this somehow?
}
}