52 lines
817 B
Go
52 lines
817 B
Go
package with
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import (
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"context"
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"database/sql"
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"log"
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"time"
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_ "github.com/lib/pq"
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)
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func PSQL(ctx context.Context, conn string, foo func(db *sql.DB) error) error {
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log.Println("opening...")
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pg, err := sql.Open("postgres", conn)
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if err != nil {
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return err
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}
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defer func() {
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log.Println("closed:", pg.Close())
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}()
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func() {
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pinged := make(chan bool)
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defer close(pinged)
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for {
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log.Println("pinging...")
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go func() {
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err := pg.PingContext(ctx)
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if err != nil {
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log.Println("!", err)
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}
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select {
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case pinged <- err == nil:
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case <-ctx.Done():
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case <-time.After(time.Second * 5):
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}
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}()
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select {
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case <-ctx.Done():
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return
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case ok := <-pinged:
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if ok {
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return
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}
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case <-time.After(time.Second * 5):
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}
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}
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}()
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return foo(pg)
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}
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