vendor: add buildkit

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/github.com/containerd/containerd/cio/io.go

@@ -20,8 +20,8 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"net/url"
 	"os"
-	"path/filepath"
 	"sync"
 
 	"github.com/containerd/containerd/defaults"
@@ -222,46 +222,76 @@ type DirectIO struct {
 	cio
 }
 
-var _ IO = &DirectIO{}
+var (
+	_ IO = &DirectIO{}
+	_ IO = &logURI{}
+)
 
-// LogFile creates a file on disk that logs the task's STDOUT,STDERR.
-// If the log file already exists, the logs will be appended to the file.
-func LogFile(path string) Creator {
+// LogURI provides the raw logging URI
+func LogURI(uri *url.URL) Creator {
 	return func(_ string) (IO, error) {
-		if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil {
-			return nil, err
-		}
-		f, err := os.OpenFile(path, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
-		if err != nil {
-			return nil, err
-		}
-		f.Close()
-		return &logIO{
+		return &logURI{
 			config: Config{
-				Stdout: path,
-				Stderr: path,
+				Stdout: uri.String(),
+				Stderr: uri.String(),
 			},
 		}, nil
 	}
 }
 
-type logIO struct {
+// BinaryIO forwards container STDOUT|STDERR directly to a logging binary
+func BinaryIO(binary string, args map[string]string) Creator {
+	return func(_ string) (IO, error) {
+		uri := &url.URL{
+			Scheme: "binary",
+			Host:   binary,
+		}
+		for k, v := range args {
+			uri.Query().Set(k, v)
+		}
+		return &logURI{
+			config: Config{
+				Stdout: uri.String(),
+				Stderr: uri.String(),
+			},
+		}, nil
+	}
+}
+
+// LogFile creates a file on disk that logs the task's STDOUT,STDERR.
+// If the log file already exists, the logs will be appended to the file.
+func LogFile(path string) Creator {
+	return func(_ string) (IO, error) {
+		uri := &url.URL{
+			Scheme: "file",
+			Host:   path,
+		}
+		return &logURI{
+			config: Config{
+				Stdout: uri.String(),
+				Stderr: uri.String(),
+			},
+		}, nil
+	}
+}
+
+type logURI struct {
 	config Config
 }
 
-func (l *logIO) Config() Config {
+func (l *logURI) Config() Config {
 	return l.config
 }
 
-func (l *logIO) Cancel() {
+func (l *logURI) Cancel() {
 
 }
 
-func (l *logIO) Wait() {
+func (l *logURI) Wait() {
 
 }
 
-func (l *logIO) Close() error {
+func (l *logURI) Close() error {
 	return nil
 }
 

vendor/github.com/containerd/containerd/cio/io_windows.go

@@ -31,11 +31,15 @@ const pipeRoot = `\\.\pipe`
 
 // NewFIFOSetInDir returns a new set of fifos for the task
 func NewFIFOSetInDir(_, id string, terminal bool) (*FIFOSet, error) {
+	stderrPipe := ""
+	if !terminal {
+		stderrPipe = fmt.Sprintf(`%s\ctr-%s-stderr`, pipeRoot, id)
+	}
 	return NewFIFOSet(Config{
 		Terminal: terminal,
 		Stdin:    fmt.Sprintf(`%s\ctr-%s-stdin`, pipeRoot, id),
 		Stdout:   fmt.Sprintf(`%s\ctr-%s-stdout`, pipeRoot, id),
-		Stderr:   fmt.Sprintf(`%s\ctr-%s-stderr`, pipeRoot, id),
+		Stderr:   stderrPipe,
 	}, nil), nil
 }