WIP: Fix podman file uploads

Blocked on containers/podman#4495

Fixes #12

go.mod

@@ -17,7 +17,7 @@ require (
 	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
 	github.com/opencontainers/image-spec v1.0.1 // indirect
 	github.com/stretchr/testify v1.4.0 // indirect
-	github.com/varlink/go v0.0.0-20191018142704-4ecdbb8a36c2
+	github.com/varlink/go v0.3.0
 	golang.org/x/net v0.0.0-20191014212845-da9a3fd4c582 // indirect
 	golang.org/x/sync v0.0.0-20190423024810-112230192c58
 	golang.org/x/time v0.0.0-20190921001708-c4c64cad1fd0 // indirect

go.sum

@@ -52,8 +52,9 @@ github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/varlink/go v0.0.0-20191018142704-4ecdbb8a36c2 h1:KcTzc0lm6PuIl9sAz5GMSGQyDhbJOa9NC3u69PVIc7Y=
 github.com/varlink/go v0.0.0-20191018142704-4ecdbb8a36c2/go.mod h1:DKg9Y2ctoNkesREGAEak58l+jOC6JU2aqZvUYs5DynU=
+github.com/varlink/go v0.3.0 h1:7IDKK8X3W9qqgw7oisE2RgtdTOxBxDwX5RDm2qVoKT8=
+github.com/varlink/go v0.3.0/go.mod h1:DKg9Y2ctoNkesREGAEak58l+jOC6JU2aqZvUYs5DynU=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=

runtimes/podman/file.go

@@ -4,56 +4,77 @@ import (
 	"context"
 	"fmt"
 	"io"
-	"os"
 	"path/filepath"
+	"strings"
 
 	"github.com/uw-labs/podrick"
 	podman "github.com/uw-labs/podrick/runtimes/podman/iopodman"
 	"github.com/varlink/go/varlink"
 )
 
-func uploadFiles(ctx context.Context, conn *varlink.Connection, cID string, files ...podrick.File) (err error) {
-	mountDir, err := podman.MountContainer().Call(ctx, conn, cID)
-	if err != nil {
-		return fmt.Errorf("failed to mount container filesystem: %w", err)
-	}
-	defer func() {
-		uErr := podman.UnmountContainer().Call(context.Background(), conn, cID, true)
-		if err == nil {
-			err = uErr
-		}
-	}()
-
+func uploadFiles(ctx context.Context, addr string, files ...podrick.File) (err error) {
 	for _, f := range files {
-		err = uploadFile(ctx, mountDir, f)
-		if err != nil {
-			return fmt.Errorf("failed to upload file: %w", err)
-		}
+		uploadFile(ctx, addr, f)
 	}
 
 	return nil
 }
 
-func uploadFile(ctx context.Context, mountDir string, file podrick.File) (err error) {
+func uploadFile(ctx context.Context, addr string, file podrick.File) (err error) {
 	path := filepath.Clean(file.Path)
 	if !filepath.IsAbs(path) {
 		return fmt.Errorf("file paths must be absolute: %q", file.Path)
 	}
-	dest := filepath.Join(mountDir, path)
-	target, err := os.Create(dest)
+	//dest := filepath.Join(mountDir, path)
+
+	fConn, err := varlink.NewConnection(ctx, addr)
 	if err != nil {
-		return fmt.Errorf("failed to create file: %w", err)
+		return fmt.Errorf("failed to create new connection: %w", err)
 	}
 	defer func() {
-		cErr := target.Close()
+		cErr := fConn.Close()
 		if err == nil {
 			err = cErr
 		}
 	}()
-	_, err = io.Copy(target, file.Content)
+
+	reply, err := podman.SendFile().Upgrade(ctx, fConn, "", int64(file.Size))
 	if err != nil {
-		return fmt.Errorf("failed to copy file contents: %w", err)
+		return fmt.Errorf("failed to start connection upgrade: %w", err)
 	}
 
+	_, _, conn, err := reply(ctx)
+	if err != nil {
+		return fmt.Errorf("failed to upgrade connection: %w", err)
+	}
+
+	w := writerCtx{
+		WriterContext: conn,
+		ctx:           ctx,
+	}
+
+	_, err = io.Copy(w, file.Content)
+	if err != nil {
+		return fmt.Errorf("failed to upload file: %w", err)
+	}
+
+	filename, err := conn.ReadBytes(ctx, ':')
+	if err != nil {
+		return fmt.Errorf("failed to read file name: %w", err)
+	}
+
+	podman.LoadImage().Call(ctx, fConn)
+
+	fmt.Println("Create file", strings.ReplaceAll(string(filename), ":", ""))
+
 	return nil
 }
+
+type writerCtx struct {
+	varlink.WriterContext
+	ctx context.Context
+}
+
+func (w writerCtx) Write(in []byte) (int, error) {
+	return w.WriterContext.Write(w.ctx, in)
+}