summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--cmd/podmanV2/containers/export.go57
-rw-r--r--pkg/api/handlers/compat/containers_export.go42
-rw-r--r--pkg/api/server/register_containers.go45
-rw-r--r--pkg/bindings/containers/containers.go20
-rw-r--r--pkg/domain/entities/containers.go4
-rw-r--r--pkg/domain/entities/engine_container.go1
-rw-r--r--pkg/domain/infra/abi/containers.go8
-rw-r--r--pkg/domain/infra/tunnel/containers.go16
8 files changed, 193 insertions, 0 deletions
diff --git a/cmd/podmanV2/containers/export.go b/cmd/podmanV2/containers/export.go
new file mode 100644
index 000000000..b93b60878
--- /dev/null
+++ b/cmd/podmanV2/containers/export.go
@@ -0,0 +1,57 @@
+package containers
+
+import (
+ "context"
+ "os"
+
+ "github.com/containers/libpod/cmd/podmanV2/parse"
+ "github.com/containers/libpod/cmd/podmanV2/registry"
+ "github.com/containers/libpod/pkg/domain/entities"
+ "github.com/pkg/errors"
+ "github.com/spf13/cobra"
+ "golang.org/x/crypto/ssh/terminal"
+)
+
+var (
+ exportDescription = "Exports container's filesystem contents as a tar archive" +
+ " and saves it on the local machine."
+
+ exportCommand = &cobra.Command{
+ Use: "export [flags] CONTAINER",
+ Short: "Export container's filesystem contents as a tar archive",
+ Long: exportDescription,
+ PersistentPreRunE: preRunE,
+ RunE: export,
+ Args: cobra.ExactArgs(1),
+ Example: `podman export ctrID > myCtr.tar
+ podman export --output="myCtr.tar" ctrID`,
+ }
+)
+
+var (
+ exportOpts entities.ContainerExportOptions
+)
+
+func init() {
+ registry.Commands = append(registry.Commands, registry.CliCommand{
+ Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+ Command: exportCommand,
+ })
+ exportCommand.SetHelpTemplate(registry.HelpTemplate())
+ exportCommand.SetUsageTemplate(registry.UsageTemplate())
+ flags := exportCommand.Flags()
+ flags.StringVarP(&exportOpts.Output, "output", "o", "", "Write to a specified file (default: stdout, which must be redirected)")
+}
+
+func export(cmd *cobra.Command, args []string) error {
+ if len(exportOpts.Output) == 0 {
+ file := os.Stdout
+ if terminal.IsTerminal(int(file.Fd())) {
+ return errors.Errorf("refusing to export to terminal. Use -o flag or redirect")
+ }
+ exportOpts.Output = "/dev/stdout"
+ } else if err := parse.ValidateFileName(exportOpts.Output); err != nil {
+ return err
+ }
+ return registry.ContainerEngine().ContainerExport(context.Background(), args[0], exportOpts)
+}
diff --git a/pkg/api/handlers/compat/containers_export.go b/pkg/api/handlers/compat/containers_export.go
new file mode 100644
index 000000000..37b9fbf2b
--- /dev/null
+++ b/pkg/api/handlers/compat/containers_export.go
@@ -0,0 +1,42 @@
+package compat
+
+import (
+ "io/ioutil"
+ "net/http"
+ "os"
+
+ "github.com/containers/libpod/libpod"
+ "github.com/containers/libpod/pkg/api/handlers/utils"
+ "github.com/pkg/errors"
+)
+
+func ExportContainer(w http.ResponseWriter, r *http.Request) {
+ runtime := r.Context().Value("runtime").(*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, "unable to create tarball tempfile", http.StatusInternalServerError, errors.Wrap(err, "unable to create tempfile"))
+ return
+ }
+ defer os.Remove(tmpfile.Name())
+ if err := tmpfile.Close(); err != nil {
+ utils.Error(w, "unable to close tempfile", http.StatusInternalServerError, errors.Wrap(err, "unable to close tempfile"))
+ return
+ }
+ if err := con.Export(tmpfile.Name()); err != nil {
+ utils.Error(w, "failed to save the image", http.StatusInternalServerError, errors.Wrap(err, "failed to save image"))
+ return
+ }
+ rdr, err := os.Open(tmpfile.Name())
+ if err != nil {
+ utils.Error(w, "failed to read temp tarball", http.StatusInternalServerError, errors.Wrap(err, "failed to read the exported tarfile"))
+ return
+ }
+ defer rdr.Close()
+ utils.WriteResponse(w, http.StatusOK, rdr)
+}
diff --git a/pkg/api/server/register_containers.go b/pkg/api/server/register_containers.go
index 08834ff01..145c054c0 100644
--- a/pkg/api/server/register_containers.go
+++ b/pkg/api/server/register_containers.go
@@ -587,6 +587,29 @@ func (s *APIServer) registerContainersHandlers(r *mux.Router) error {
r.HandleFunc(VersionedPath("/containers/{name}/resize"), s.APIHandler(compat.ResizeContainer)).Methods(http.MethodPost)
// Added non version path to URI to support docker non versioned paths
r.HandleFunc("/containers/{name}/resize", s.APIHandler(compat.ResizeContainer)).Methods(http.MethodPost)
+ // swagger:operation GET /containers/{name}/export compat exportContainer
+ // ---
+ // tags:
+ // - containers (compat)
+ // summary: Export a container
+ // description: Export the contents of a container as a tarball.
+ // parameters:
+ // - in: path
+ // name: name
+ // type: string
+ // required: true
+ // description: the name or ID of the container
+ // produces:
+ // - application/json
+ // responses:
+ // 200:
+ // description: tarball is returned in body
+ // 404:
+ // $ref: "#/responses/NoSuchContainer"
+ // 500:
+ // $ref: "#/responses/InternalError"
+ r.HandleFunc(VersionedPath("/containers/{name}/export"), s.APIHandler(compat.ExportContainer)).Methods(http.MethodGet)
+ r.HandleFunc("/containers/{name}/export", s.APIHandler(compat.ExportContainer)).Methods(http.MethodGet)
/*
libpod endpoints
@@ -1237,5 +1260,27 @@ func (s *APIServer) registerContainersHandlers(r *mux.Router) error {
// 500:
// $ref: "#/responses/InternalError"
r.HandleFunc(VersionedPath("/libpod/containers/{name}/resize"), s.APIHandler(compat.ResizeContainer)).Methods(http.MethodPost)
+ // swagger:operation GET /libpod/containers/{name}/export libpod libpodExportContainer
+ // ---
+ // tags:
+ // - containers
+ // summary: Export a container
+ // description: Export the contents of a container as a tarball.
+ // parameters:
+ // - in: path
+ // name: name
+ // type: string
+ // required: true
+ // description: the name or ID of the container
+ // produces:
+ // - application/json
+ // responses:
+ // 200:
+ // description: tarball is returned in body
+ // 404:
+ // $ref: "#/responses/NoSuchContainer"
+ // 500:
+ // $ref: "#/responses/InternalError"
+ r.HandleFunc(VersionedPath("/libpod/containers/{name}/export"), s.APIHandler(compat.ExportContainer)).Methods(http.MethodGet)
return nil
}
diff --git a/pkg/bindings/containers/containers.go b/pkg/bindings/containers/containers.go
index bad1294f4..49a2dfd58 100644
--- a/pkg/bindings/containers/containers.go
+++ b/pkg/bindings/containers/containers.go
@@ -2,6 +2,7 @@ package containers
import (
"context"
+ "io"
"net/http"
"net/url"
"strconv"
@@ -296,3 +297,22 @@ func Stop(ctx context.Context, nameOrID string, timeout *uint) error {
}
return response.Process(nil)
}
+
+// Export creates a tarball of the given name or ID of a container. It
+// requires an io.Writer be provided to write the tarball.
+func Export(ctx context.Context, nameOrID string, w io.Writer) error {
+ params := url.Values{}
+ conn, err := bindings.GetClient(ctx)
+ if err != nil {
+ return err
+ }
+ response, err := conn.DoRequest(nil, http.MethodGet, "/containers/%s/export", params, nameOrID)
+ if err != nil {
+ return err
+ }
+ if response.StatusCode/100 == 2 {
+ _, err = io.Copy(w, response.Body)
+ return err
+ }
+ return response.Process(nil)
+}
diff --git a/pkg/domain/entities/containers.go b/pkg/domain/entities/containers.go
index b7f1cd812..d51124f55 100644
--- a/pkg/domain/entities/containers.go
+++ b/pkg/domain/entities/containers.go
@@ -117,3 +117,7 @@ type CommitOptions struct {
type CommitReport struct {
Id string
}
+
+type ContainerExportOptions struct {
+ Output string
+}
diff --git a/pkg/domain/entities/engine_container.go b/pkg/domain/entities/engine_container.go
index c5f46ccfc..a122857cd 100644
--- a/pkg/domain/entities/engine_container.go
+++ b/pkg/domain/entities/engine_container.go
@@ -10,6 +10,7 @@ type ContainerEngine interface {
ContainerCommit(ctx context.Context, nameOrId string, options CommitOptions) (*CommitReport, error)
ContainerExists(ctx context.Context, nameOrId string) (*BoolReport, error)
ContainerInspect(ctx context.Context, namesOrIds []string, options InspectOptions) ([]*ContainerInspectReport, error)
+ ContainerExport(ctx context.Context, nameOrId string, options ContainerExportOptions) error
ContainerKill(ctx context.Context, namesOrIds []string, options KillOptions) ([]*KillReport, error)
ContainerPause(ctx context.Context, namesOrIds []string, options PauseUnPauseOptions) ([]*PauseUnpauseReport, error)
ContainerRestart(ctx context.Context, namesOrIds []string, options RestartOptions) ([]*RestartReport, error)
diff --git a/pkg/domain/infra/abi/containers.go b/pkg/domain/infra/abi/containers.go
index 172c7d1a3..d4c5ac311 100644
--- a/pkg/domain/infra/abi/containers.go
+++ b/pkg/domain/infra/abi/containers.go
@@ -325,3 +325,11 @@ func (ic *ContainerEngine) ContainerCommit(ctx context.Context, nameOrId string,
}
return &entities.CommitReport{Id: newImage.ID()}, nil
}
+
+func (ic *ContainerEngine) ContainerExport(ctx context.Context, nameOrId string, options entities.ContainerExportOptions) error {
+ ctr, err := ic.Libpod.LookupContainer(nameOrId)
+ if err != nil {
+ return err
+ }
+ return ctr.Export(options.Output)
+}
diff --git a/pkg/domain/infra/tunnel/containers.go b/pkg/domain/infra/tunnel/containers.go
index c1bade4ba..8885ae7c7 100644
--- a/pkg/domain/infra/tunnel/containers.go
+++ b/pkg/domain/infra/tunnel/containers.go
@@ -2,6 +2,8 @@ package tunnel
import (
"context"
+ "io"
+ "os"
"github.com/containers/image/v5/docker/reference"
@@ -210,3 +212,17 @@ func (ic *ContainerEngine) ContainerCommit(ctx context.Context, nameOrId string,
}
return &entities.CommitReport{Id: response.ID}, nil
}
+
+func (ic *ContainerEngine) ContainerExport(ctx context.Context, nameOrId string, options entities.ContainerExportOptions) error {
+ var (
+ err error
+ w io.Writer
+ )
+ if len(options.Output) > 0 {
+ w, err = os.Create(options.Output)
+ if err != nil {
+ return err
+ }
+ }
+ return containers.Export(ic.ClientCxt, nameOrId, w)
+}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-05 21:57:20 +0000