Merge branch '239-last-time-activity' into 'master'

fix: extract the last time activity for ChatOps queries (#239)

# Description
Consider the `duration` label as a sign of user activity

Closes #239

See merge request postgres-ai/database-lab!274

Author: agneum

pkg/util/pglog/activity.go

@@ -125,7 +125,7 @@ func (s *Selector) FilterOldFilesInList() {
 
 // ParsePostgresLastActivity extracts the time of last session activity.
 func ParsePostgresLastActivity(logTime, text string) (*time.Time, error) {
-	if logTime == "" || !strings.Contains(text, "statement:") {
+	if logTime == "" || !(strings.Contains(text, "statement:") || strings.Contains(text, "duration:")) {
 		return nil, nil
 	}
 

pkg/util/pglog/activity_test.go

@@ -35,6 +35,11 @@ func TestGetPostgresLastActivity(t *testing.T) {
 			logMessage:   "duration: 9.893 ms  statement: SELECT 1;",
 			timeActivity: nil,
 		},
+		{
+			logTime:      "2021-03-24 15:33:56.135 UTC",
+			logMessage:   "duration: 0.544 ms  execute lrupsc_28_0: EXPLAIN (FORMAT TEXT) select 1",
+			timeActivity: pointer.ToTime(time.Date(2021, 3, 24, 15, 33, 56, 135000000, time.UTC)),
+		},
 	}
 
 	for _, tc := range testCases {