jriou/pgterminate
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Use state_change for measuring elapsed time

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This commit is contained in:
Julien Riou 2018-06-11 21:02:24 +02:00
commit 3a89201a94
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GPG key ID: BA3E15176E45E85D
3 changed files with 35 additions and 40 deletions
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8
base/db.go
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@ -42,7 +42,7 @@ func (db *Db) Disconnect() {
// Sessions connects to the database and returns current sessions
func (db *Db) Sessions() (sessions []Session) {
query := `select pid as pid, usename as user, datname as db, host(client_addr)::text || ':' || client_port::text as client, state as state, substring(query from 1 for ` + strconv.Itoa(maxQueryLength) + `) as query, coalesce(extract(epoch from now() - backend_start), 0) as "backendDuration", coalesce(extract(epoch from now() - xact_start), 0) as "xactDuration", coalesce(extract(epoch from now() - query_start), 0) as "queryDuration" from pg_catalog.pg_stat_activity where pid <> pg_backend_pid();`
query := `select pid as pid, usename as user, datname as db, host(client_addr)::text || ':' || client_port::text as client, state as state, substring(query from 1 for ` + strconv.Itoa(maxQueryLength) + `) as query, coalesce(extract(epoch from now() - state_change), 0) as "stateDuration" from pg_catalog.pg_stat_activity where pid <> pg_backend_pid();`
rows, err := db.conn.Query(query)
Panic(err)
defer rows.Close()
@ -50,12 +50,12 @@ func (db *Db) Sessions() (sessions []Session) {
for rows.Next() {
var pid sql.NullInt64
var user, db, client, state, query sql.NullString
var backendDuration, xactDuration, queryDuration float64
err := rows.Scan(&pid, &user, &db, &client, &state, &query, &backendDuration, &xactDuration, &queryDuration)
var stateDuration float64
err := rows.Scan(&pid, &user, &db, &client, &state, &query, &stateDuration)
Panic(err)
if pid.Valid && user.Valid && db.Valid && client.Valid && state.Valid && query.Valid {
sessions = append(sessions, NewSession(pid.Int64, user.String, db.String, client.String, state.String, query.String, backendDuration, xactDuration, queryDuration))
sessions = append(sessions, NewSession(pid.Int64, user.String, db.String, client.String, state.String, query.String, stateDuration))
}
}