GroupScreen now checks the "last updated" information.

[ccbs] / bigscreen / fetch_needs_update.cpp

diff --git a/bigscreen/fetch_needs_update.cpp b/bigscreen/fetch_needs_update.cpp
new file mode 100644 (file)
index 0000000..bbb801e
--- /dev/null
+++ b/bigscreen/fetch_needs_update.cpp
@@ -0,0 +1,26 @@
+#include "fetch_needs_update.h"
+
+FetchNeedsUpdate::FetchNeedsUpdate(struct timeval last_updated, unsigned tournament, unsigned round, unsigned parallel, bool *result)
+       : last_updated(last_updated), tournament(tournament), round(round), parallel(parallel), result(result)
+{
+}
+
+void FetchNeedsUpdate::operator() (pqxx::transaction<> &t)
+{
+       // as we don't seem to have proper handling for timestamps in libpqxx,
+       // let's ask the database do to the work for us
+       char buf[256];
+       time_t lu = last_updated.tv_sec;
+       strftime(buf, 256, "%F %T", localtime(&lu));
+       
+       pqxx::result res( t.exec(std::string("SELECT (last_updated > '") + buf + "') AS needs_update FROM bigscreen.active_groups WHERE "
+               "tournament=" + pqxx::to_string(tournament) + " AND "
+               "round=" + pqxx::to_string(round) + " AND "
+               "parallel=" + pqxx::to_string(parallel)) );
+
+       try {
+               *result = res.at(0)["needs_update"].as(*result);
+       } catch (PGSTD::out_of_range &e) {
+               *result = false;
+       }
+}