Change errors a bit

Signed-off-by: Peyton Walters <pwalters18@bloomberg.net>

Author: Peyton Walters

cmd/plugin/vault-auth-spire.go

@@ -20,6 +20,8 @@ import (
 	"context"
 	"errors"
 	"flag"
+	"fmt"
+
 	"github.com/bloomberg/vault-auth-spire/internal/common"
 	"github.com/hashicorp/vault/sdk/framework"
 	"github.com/hashicorp/vault/sdk/logical"
@@ -144,7 +146,7 @@ func parseSettings() (*common.Settings, error) {
 
 	settings, err := common.ReadSettings(settingsFilePath)
 	if err != nil {
-		return nil, errors.New("vault-auth-spire: Failed to read settings from '" + settingsFilePath + "' - " + err.Error())
+		return nil, fmt.Errorf("vault-auth-spire: Failed to read settings from %s: %v", settingsFilePath, err)
 	}
 
 	return settings, nil

internal/common/settings.go

@@ -54,10 +54,6 @@ type LogSettings struct {
 	Compress   bool
 }
 
-func wrapError(err error) error {
-	return errors.New("parse-settings: " + err.Error())
-}
-
 // ReadSettings reads settings from JSON into config objects using Viper
 func ReadSettings(fromPath string) (*Settings, error) {
 	settings := new(Settings)
@@ -68,17 +64,17 @@ func ReadSettings(fromPath string) (*Settings, error) {
 	// Load the config from disk at sourcePath
 	viper.SetConfigFile(fromPath)
 	if err = viper.ReadInConfig(); err != nil {
-		return nil, wrapError(err)
+		return nil, err
 	}
 
 	// Read logging settings
 	if settings.Log, err = readLogSettings(); err != nil {
-		return nil, wrapError(err)
+		return nil, err
 	}
 
 	// Read our source of trust settings
 	if settings.SourceOfTrust, err = readSourceOfTrustSettings(); err != nil {
-		return nil, wrapError(err)
+		return nil, err
 	}
 
 	return settings, nil