58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
package main
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import (
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"database/sql"
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"flag"
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"fmt"
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"os"
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"time"
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_ "github.com/mattn/go-oci8"
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)
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const maxAttemtps = 60
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const wait = 10
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func main() {
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var host string
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flag.StringVar(&host, "h", "oracle", "hostname for oracle connection")
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flag.Parse()
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dbDSN := os.Getenv("GORM_DSN")
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if dbDSN == "" {
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dbDSN = fmt.Sprintf("gorm/gorm@%s:1521/XEPDB1", host)
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}
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fmt.Println("connecting to: ", dbDSN)
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for i := 0; i < maxAttemtps; i++ {
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db, err := sql.Open("oci8", dbDSN)
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if err != nil {
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fmt.Println(err.Error())
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fmt.Println("sleeping: ", wait, " seconds...")
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time.Sleep(wait * time.Second)
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continue
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}
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q := "select sysdate from dual"
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rows, err := db.Query(q)
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if err != nil {
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fmt.Println(err.Error())
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fmt.Println("sleeping: ", wait, " seconds...")
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time.Sleep(wait * time.Second)
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continue
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}
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defer rows.Close()
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var thedate string
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for rows.Next() {
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err := rows.Scan(&thedate)
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if err != nil {
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fmt.Println(err.Error())
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fmt.Println("sleeping: ", wait, " seconds...")
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time.Sleep(wait * time.Second)
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continue
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}
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}
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fmt.Println("connected to oracle...")
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return
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}
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fmt.Println("unable to connect.")
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os.Exit(-1)
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}
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