summaryrefslogtreecommitdiff
path: root/pkg/api/handlers/compat/containers_export.go
blob: 743ce2d5334925c26a998139509832e3fcd283e5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
package compat

import (
	"io/ioutil"
	"net/http"
	"os"

	"github.com/containers/podman/v4/libpod"
	"github.com/containers/podman/v4/pkg/api/handlers/utils"
	api "github.com/containers/podman/v4/pkg/api/types"
	"github.com/pkg/errors"
)

func ExportContainer(w http.ResponseWriter, r *http.Request) {
	runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
	name := utils.GetName(r)
	con, err := runtime.LookupContainer(name)
	if err != nil {
		utils.ContainerNotFound(w, name, err)
		return
	}
	tmpfile, err := ioutil.TempFile("", "api.tar")
	if err != nil {
		utils.Error(w, http.StatusInternalServerError, errors.Wrap(err, "unable to create tempfile"))
		return
	}
	defer os.Remove(tmpfile.Name())
	if err := tmpfile.Close(); err != nil {
		utils.Error(w, http.StatusInternalServerError, errors.Wrap(err, "unable to close tempfile"))
		return
	}
	if err := con.Export(tmpfile.Name()); err != nil {
		utils.Error(w, http.StatusInternalServerError, errors.Wrap(err, "failed to save image"))
		return
	}
	rdr, err := os.Open(tmpfile.Name())
	if err != nil {
		utils.Error(w, http.StatusInternalServerError, errors.Wrap(err, "failed to read the exported tarfile"))
		return
	}
	defer rdr.Close()
	utils.WriteResponse(w, http.StatusOK, rdr)
}