97 lines
2.3 KiB
Go
97 lines
2.3 KiB
Go
/*
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Copyright 2018 the Velero contributors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package restic
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import (
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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)
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// Command represents a restic command.
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type Command struct {
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Command string
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RepoIdentifier string
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PasswordFile string
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Dir string
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Args []string
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ExtraFlags []string
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Env []string
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}
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func (c *Command) RepoName() string {
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if c.RepoIdentifier == "" {
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return ""
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}
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return c.RepoIdentifier[strings.LastIndex(c.RepoIdentifier, "/")+1:]
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}
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// StringSlice returns the command as a slice of strings.
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func (c *Command) StringSlice() []string {
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res := []string{"restic"}
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res = append(res, c.Command, repoFlag(c.RepoIdentifier))
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if c.PasswordFile != "" {
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res = append(res, passwordFlag(c.PasswordFile))
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}
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// If VELERO_SCRATCH_DIR is defined, put the restic cache within it. If not,
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// allow restic to choose the location. This makes running either in-cluster
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// or local (dev) work properly.
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if scratch := os.Getenv("VELERO_SCRATCH_DIR"); scratch != "" {
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res = append(res, cacheDirFlag(filepath.Join(scratch, ".cache", "restic")))
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}
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res = append(res, c.Args...)
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res = append(res, c.ExtraFlags...)
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return res
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}
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// String returns the command as a string.
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func (c *Command) String() string {
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return strings.Join(c.StringSlice(), " ")
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}
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// Cmd returns an exec.Cmd for the command.
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func (c *Command) Cmd() *exec.Cmd {
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parts := c.StringSlice()
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cmd := exec.Command(parts[0], parts[1:]...)
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cmd.Dir = c.Dir
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if len(c.Env) > 0 {
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cmd.Env = c.Env
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}
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return cmd
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}
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func repoFlag(repoIdentifier string) string {
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return fmt.Sprintf("--repo=%s", repoIdentifier)
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}
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func passwordFlag(file string) string {
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return fmt.Sprintf("--password-file=%s", file)
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}
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func cacheDirFlag(dir string) string {
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return fmt.Sprintf("--cache-dir=%s", dir)
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}
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