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replace.go
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replace.go
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// Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package update
import (
"os"
"path/filepath"
"github.com/GoogleContainerTools/kpt/internal/errors"
"github.com/GoogleContainerTools/kpt/internal/pkg"
"github.com/GoogleContainerTools/kpt/internal/types"
"github.com/GoogleContainerTools/kpt/internal/util/pkgutil"
)
// Updater updates a package to a new upstream version.
//
// If the package at pkgPath differs from the upstream ref it was fetch from, then Update will
// delete the local package. This will wipe all local changes.
type ReplaceUpdater struct{}
func (u ReplaceUpdater) Update(options Options) error {
const op errors.Op = "update.Update"
paths, err := pkgutil.FindSubpackagesForPaths(pkg.Local, true, options.LocalPath, options.UpdatedPath)
if err != nil {
return errors.E(op, types.UniquePath(options.LocalPath), err)
}
for _, p := range append([]string{"."}, paths...) {
isRootPkg := false
if p == "." && options.IsRoot {
isRootPkg = true
}
localSubPkgPath := filepath.Join(options.LocalPath, p)
updatedSubPkgPath := filepath.Join(options.UpdatedPath, p)
err = pkgutil.RemovePackageContent(localSubPkgPath, !isRootPkg)
if err != nil {
return errors.E(op, types.UniquePath(localSubPkgPath), err)
}
// If the package doesn't exist in updated, we make sure it is
// deleted from the local package. If it exists in updated, we copy
// the content of the package into local.
_, err = os.Stat(updatedSubPkgPath)
if err != nil && !os.IsNotExist(err) {
return errors.E(op, types.UniquePath(localSubPkgPath), err)
}
if os.IsNotExist(err) {
if err = os.RemoveAll(localSubPkgPath); err != nil {
return errors.E(op, types.UniquePath(localSubPkgPath), err)
}
} else {
if err = pkgutil.CopyPackage(updatedSubPkgPath, localSubPkgPath, !isRootPkg, pkg.None); err != nil {
return errors.E(op, types.UniquePath(localSubPkgPath), err)
}
}
}
return nil
}