chore: move errs to the errors file

Signed-off-by: Armando Ruocco <[email protected]>

Author: armru

internal/cnpgi/common/errors.go

@@ -1,10 +1,22 @@
 package common
 
 import (
+	"fmt"
+
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 )
 
+// ErrEndOfWALStreamReached is returned when end of WAL is detected in the cloud archive.
+var ErrEndOfWALStreamReached = status.Errorf(codes.NotFound, "end of WAL reached")
+
+// ErrMissingPermissions is raised when the sidecar has no
+// permission to download the credentials needed to reach
+// the object storage.
+// This will be fixed by the reconciliation loop in the
+// operator plugin.
+var ErrMissingPermissions = fmt.Errorf("no permission to download the backup credentials, retrying")
+
 // newWALNotFoundError returns a error that states that a
 // certain WAL file has not been found. This error is
 // compatible with GRPC status codes, resulting in a 404

internal/cnpgi/common/wal.go

@@ -18,8 +18,6 @@ import (
 	"github.com/cloudnative-pg/machinery/pkg/fileutils"
 	walUtils "github.com/cloudnative-pg/machinery/pkg/fileutils/wals"
 	"github.com/cloudnative-pg/machinery/pkg/log"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/types"
 	"sigs.k8s.io/controller-runtime/pkg/client"
@@ -29,13 +27,6 @@ import (
 	"github.com/cloudnative-pg/plugin-barman-cloud/internal/cnpgi/operator/config"
 )
 
-// ErrMissingPermissions is raised when the sidecar has no
-// permission to download the credentials needed to reach
-// the object storage.
-// This will be fixed by the reconciliation loop in the
-// operator plugin.
-var ErrMissingPermissions = fmt.Errorf("no permission to download the backup credentials, retrying")
-
 // SpoolManagementError is raised when a spool management
 // error has been detected
 type SpoolManagementError struct {
@@ -459,9 +450,6 @@ func gatherWALFilesToRestore(walName string, parallel int) (walList []string, er
 	return walList, err
 }
 
-// ErrEndOfWALStreamReached is returned when end of WAL is detected in the cloud archive.
-var ErrEndOfWALStreamReached = status.Errorf(codes.NotFound, "end of WAL reached")
-
 // checkEndOfWALStreamFlag returns ErrEndOfWALStreamReached if the flag is set in the restorer.
 func checkEndOfWALStreamFlag(walRestorer *barmanRestorer.WALRestorer) error {
 	contain, err := walRestorer.IsEndOfWALStream()