arno/clair
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

verify database state with retry

Browse Source
This commit is contained in:
Penghao Cen 2016-09-29 22:18:28 +08:00
parent 43969afa60
commit 01431bff84
1 changed files with 19 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
database/pgsql/pgsql.go
View File

@ -156,10 +156,26 @@ func openDatabase(registrableComponentConfig config.RegistrableComponentConfig)
return nil, fmt.Errorf("pgsql: could not open database: %v", err)
}
// Verify database state.
if err := pg.DB.Ping(); err != nil {
// Verify database state with retry.
ch := make(chan int, 1)
go func() {
for {
err := pg.DB.Ping()
if err == nil {
ch <- 1
} else {
log.Error("failed to verify database state, retry after 2 seconds")
time.Sleep(2 * time.Second)
}
}
}()
select {
case <-ch:
// verify database state ok, break
case <-time.After(60 * time.Second):
pg.Close()
return nil, fmt.Errorf("pgsql: could not open database: %v", err)
return nil, fmt.Errorf("pgsql: failed to verify database state after retry 30 times in 60 seconds: %v", err)
}
// Run migrations.