Merge branch 'stable-2.15'

* stable-2.15:
  Add missing documentation of 'all' option on list projects REST API
  RefAdvertisementIT: Test hiding meta refs
  Evict database idle connections

Change-Id: Id4a8f55403324773483880704f62d0c83e64f807

Documentation/rest-api-projects.txt

@@ -324,6 +324,33 @@ GET /projects/?type=PERMISSIONS HTTP/1.0
   }
 ----
 
+All::
+Get all projects, including those whose state is "HIDDEN".
++
+.Request
+----
+GET /projects/?all HTTP/1.0
+----
++
+.Response
+----
+  HTTP/1.1 200 OK
+  Content-Disposition: attachment
+  Content-Type: application/json; charset=UTF-8
+
+  )]}'
+  {
+    "All-Projects" {
+      "id": "All-Projects",
+      "state": "ACTIVE"
+    },
+    "some-other-project": {
+      "id": "some-other-project",
+      "state": "HIDDEN"
+    }
+  }
+----
+
 [[query-projects]]
 === Query Projects
 --

java/com/google/gerrit/server/schema/DataSourceProvider.java

@@ -138,6 +138,9 @@ public class DataSourceProvider implements Provider<DataSource>, LifecycleListen
               MILLISECONDS.convert(30, SECONDS),
               MILLISECONDS));
       ds.setInitialSize(ds.getMinIdle());
+      long evictIdleTimeMs = 1000L * 60;
+      ds.setMinEvictableIdleTimeMillis(evictIdleTimeMs);
+      ds.setTimeBetweenEvictionRunsMillis(evictIdleTimeMs / 2);
       ds.setValidationQuery(dst.getValidationQuery());
       ds.setValidationQueryTimeout(5);
       exportPoolMetrics(ds);