fix: greatly improve performance of often-executed ping-fetch-query

[gigi.git] / src / org / cacert / gigi / ping / PingerDaemon.java

diff --git a/src/org/cacert/gigi/ping/PingerDaemon.java b/src/org/cacert/gigi/ping/PingerDaemon.java
index fa12d033f1f1696ef59787657baadd55972e2d84..0e4e3bd39df9c4ba216d729c84c066668d5a8645 100644 (file)
--- a/src/org/cacert/gigi/ping/PingerDaemon.java
+++ b/src/org/cacert/gigi/ping/PingerDaemon.java
@@ -5,6 +5,8 @@ import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.Queue;
 
+import org.cacert.gigi.database.DatabaseConnection;
+import org.cacert.gigi.database.DatabaseConnection.Link;
 import org.cacert.gigi.database.GigiPreparedStatement;
 import org.cacert.gigi.database.GigiResultSet;
 import org.cacert.gigi.dbObjects.Domain;
@@ -28,7 +30,23 @@ public class PingerDaemon extends Thread {
 
     @Override
     public void run() {
-        searchNeededPings = new GigiPreparedStatement("SELECT `pingconfig`.`id` FROM `pingconfig` LEFT JOIN `domainPinglog` ON `domainPinglog`.`configId` = `pingconfig`.`id` INNER JOIN `domains` ON `domains`.`id` = `pingconfig`.`domainid` WHERE ( `domainPinglog`.`configId` IS NULL OR `domainPinglog`.`when` < CURRENT_TIMESTAMP - interval '6 mons') AND `domains`.`deleted` IS NOT NULL AND `pingconfig`.`deleted` IS NOT NULL GROUP BY `pingconfig`.`id`");
+        try (Link l = DatabaseConnection.newLink(false)) {
+            runWithConnection();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void runWithConnection() {
+        searchNeededPings = new GigiPreparedStatement("SELECT `pc`.`id`" //
+                + " FROM `pingconfig` AS `pc`" //
+                + " INNER JOIN `domains` AS `d` ON `d`.`id` = `pc`.`domainid`" //
+                + " WHERE `d`.`deleted` IS NULL" //
+                + "  AND `pc`.`deleted` IS NULL" //
+                + "  AND NOT EXISTS (" //
+                + "    SELECT 1 FROM `domainPinglog` AS `dpl`" //
+                + "    WHERE `dpl`.`configId` = `pc`.`id`" //
+                + "     AND `dpl`.`when` >= CURRENT_TIMESTAMP - interval '6 mons')");
         pingers.put(DomainPingType.EMAIL, new EmailPinger());
         pingers.put(DomainPingType.SSL, new SSLPinger(truststore));
         pingers.put(DomainPingType.HTTP, new HTTPFetch());