fix: some errorhandling corrections

main.go

@@ -18,8 +18,11 @@ func main() {
 	}
 	cfg = config.ValidateConfig(cfg)
 
-	s := secretsmanager.InitializeClient(cfg)
+	s, err := secretsmanager.New(cfg)
-	data, err := secretsmanager.GetSecrets(&s, cfg)
+	if err != nil {
+		log.Fatalf("Error initializing secrets manager client: %s", err)
+	}
+	data, err := s.GetSecrets(cfg)
 	if err != nil {
 		log.Fatalf("Error retrieving secrets: %s", err)
 	}

secretsmanager/client.go

@@ -2,6 +2,7 @@ package secretsmanager
 
 import (
 	"context"
+	"fmt"
 	"time"
 
 	"secretsmanager/config"
@@ -15,30 +16,31 @@ type SecretsManager struct {
 	Client *vault.Client
 }
 
-func InitializeClient(
+func New(cfg config.Config) (*SecretsManager, error) {
-	cfg config.Config,
-) SecretsManager {
-
 	s := SecretsManager{}
 	s.Ctx = context.Background()
-	s.Client, _ = vault.New(
+	client, err := vault.New(
 		vault.WithAddress(cfg.VaultAddr),
 		vault.WithRequestTimeout(30*time.Second),
 		vault.WithTLS(vault.TLSConfiguration{
 			InsecureSkipVerify: false,
 		}),
 	)
+	if err != nil {
+		return nil, err
+	}
+	s.Client = client
 
 	config.InfoLog("Attempting to login with user %s", cfg.VaultUsername)
 	loginResp, err := s.Client.Auth.UserpassLogin(s.Ctx, cfg.VaultUsername, schema.UserpassLoginRequest{Password: cfg.VaultPassword})
 	if err != nil {
-		config.FatalLog("Vault login request failed: %s", err)
+		return nil, fmt.Errorf("vault login request failed: %w", err)
 	}
 	config.InfoLog("Login successful. Token received.")
 	err = s.Client.SetToken(loginResp.Auth.ClientToken)
 	if err != nil {
-		config.FatalLog("Vault login could not set token: %s", err)
+		return nil, fmt.Errorf("vault login could not set token: %w", err)
 	}
 
-	return s
+	return &s, nil
 }

secretsmanager/secrets.go

@@ -7,11 +7,7 @@ import (
 	"github.com/hashicorp/vault-client-go"
 )
 
-func GetSecrets(
+func (s *SecretsManager) GetSecrets(cfg config.Config) ([]string, error) {
-	s *SecretsManager,
-	cfg config.Config,
-) ([]string, error) {
-
 	config.InfoLog("Attempting to read secret from mount '%s' at path '%s'", cfg.VaultSecretsManagerID, cfg.VaultPath)
 	secret, err := s.Client.Secrets.KvV2Read(s.Ctx, cfg.VaultPath, vault.WithMountPath(cfg.VaultSecretsManagerID))
 	if err != nil {