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Add ability to configure client from env variables #136

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Merged
majst01 merged 1 commit into from
Jun 16, 2026
Merged

Add ability to configure client from env variables #136

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25 changes: 23 additions & 2 deletions go/client/conn.go
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Original file line number Diff line number Diff line change
Expand Up @@ -5,13 +5,19 @@ import (
"fmt"
"log/slog"
"net/http"
"net/url"
"os"
"time"

"connectrpc.com/connect"
"github.com/golang-jwt/jwt/v5"
)

const tokenRenewChecksDuringLifetime = 4
const (
tokenRenewChecksDuringLifetime = 4
TokenEnvName = "METAL_APIV2_TOKEN"
BaseURLEnvName = "METAL_APIV2_URL"
)

type (
// DialConfig is the configuration to create a api-server connection
Expand Down Expand Up @@ -55,9 +61,23 @@ func (d *DialConfig) HttpClient() *http.Client {
}

func (dc *DialConfig) parse() error {
if dc.BaseURL == "" {
dc.BaseURL = os.Getenv(BaseURLEnvName)
if dc.BaseURL == "" {
return fmt.Errorf("neither BaseURL nor %s were given", BaseURLEnvName)
}
if _, err := url.Parse(dc.BaseURL); err != nil {
return err
}
}

if dc.Token == "" {
return nil
dc.Token = os.Getenv(TokenEnvName)
if dc.Token == "" {
return nil
}
}

parsed, err := jwt.Parse(dc.Token, nil)
if err != nil && !errors.Is(err, jwt.ErrTokenUnverifiable) {
return fmt.Errorf("unable to parse token:%w", err)
Expand All @@ -80,5 +100,6 @@ func (dc *DialConfig) parse() error {
if dc.issuedAt.IsZero() {
dc.issuedAt = time.Now()
}

return nil
}
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