From 25312bb5b4e2bd4e122703006fc85bbf080e5e7c Mon Sep 17 00:00:00 2001
From: baude <bbaude@redhat.com>
Date: Fri, 1 May 2020 12:57:41 -0500
Subject: v2 system subcommand

add system df, info, load, renumber, and migrate

Refactor for specialized libpod engines

add the ability to prune images, volumes, containers, and pods

Signed-off-by: baude <bbaude@redhat.com>
---
 cmd/podman/system/migrate.go | 63 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 cmd/podman/system/migrate.go

(limited to 'cmd/podman/system/migrate.go')

diff --git a/cmd/podman/system/migrate.go b/cmd/podman/system/migrate.go
new file mode 100644
index 000000000..13aa162c7
--- /dev/null
+++ b/cmd/podman/system/migrate.go
@@ -0,0 +1,63 @@
+package system
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/containers/libpod/pkg/domain/infra"
+	"github.com/spf13/cobra"
+)
+
+var (
+	migrateDescription = `
+        podman system migrate
+
+        Migrate existing containers to a new version of Podman.
+`
+
+	migrateCommand = &cobra.Command{
+		Use:   "migrate",
+		Args:  validate.NoArgs,
+		Short: "Migrate containers",
+		Long:  migrateDescription,
+		Run:   migrate,
+	}
+)
+
+var (
+	migrateOptions entities.SystemMigrateOptions
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode},
+		Command: migrateCommand,
+		Parent:  systemCmd,
+	})
+
+	flags := migrateCommand.Flags()
+	flags.StringVar(&migrateOptions.NewRuntime, "new-runtime", "", "Specify a new runtime for all containers")
+}
+
+func migrate(cmd *cobra.Command, args []string) {
+	// Shutdown all running engines, `renumber` will hijack repository
+	registry.ContainerEngine().Shutdown(registry.Context())
+	registry.ImageEngine().Shutdown(registry.Context())
+
+	engine, err := infra.NewSystemEngine(entities.MigrateMode, registry.PodmanConfig())
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(125)
+	}
+	defer engine.Shutdown(registry.Context())
+
+	err = engine.Migrate(registry.Context(), cmd.Flags(), registry.PodmanConfig(), migrateOptions)
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(125)
+	}
+	os.Exit(0)
+}
-- 
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