/
postgres.go
80 lines (57 loc) · 1.49 KB
/
postgres.go
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package updater
import (
"context"
"fmt"
"log"
"github.com/Abbas-gheydi/hanoproxy/model"
"github.com/jackc/pgx/v4"
)
func (rec *recordTable) checkPostgresHealth(r model.Record) (updatedRecord model.Record) {
for i := range r.Ip {
go func(i int) {
isSalve, err := psqlConnect(r.Ip[i].UserName,
r.Ip[i].Password,
r.Options.DbName,
r.Ip[i].Addr,
r.Ip[i].Port)
if err != nil {
rec.update(&r.Ip[i], false)
} else {
rec.update(&r.Ip[i], true)
}
switch isSalve {
case true:
if r.Options.MasterOnly {
rec.update(&r.Ip[i], false)
}
case false:
if r.Options.SlaveOnly {
rec.update(&r.Ip[i], false)
}
}
}(i)
}
return r
}
func psqlConnect(username string, password string, dbname string, ip string, port string) (isSlave bool, err error) {
defer func() {
if err := recover(); err != nil {
log.Println("panic occurred:", err)
}
}()
//urlExample := "postgres://user:pass@localhost:5432/postgres"
urlExample := fmt.Sprintf("postgres://%v:%v@%v:%v/%v", username, password, ip, port, dbname)
conn, err := pgx.Connect(context.Background(), urlExample)
if err != nil {
log.Printf("Unable to connect to database: %v\n", err)
return
}
defer conn.Close(context.Background())
err = conn.QueryRow(context.Background(), "select pg_is_in_recovery()").Scan(&isSlave)
if err != nil {
log.Printf("QueryRow failed: %v\n", err)
return
}
log.Println("postgres", ip, "connected successfully. isSlave:", isSlave)
return
}