Move cncd/pipeline/pipeline/ to pipeline/ (#347)

* Refactor: move cncd/pipeline/ to pipeline/

* Refactor: move pipeline/pipeline/ to pipeline/

pipeline/rpc/line.go

@@ -0,0 +1,107 @@
+package rpc
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"time"
+)
+
+// Identifies the type of line in the logs.
+const (
+	LineStdout int = iota
+	LineStderr
+	LineExitCode
+	LineMetadata
+	LineProgress
+)
+
+// Line is a line of console output.
+type Line struct {
+	Proc string `json:"proc,omitempty"`
+	Time int64  `json:"time,omitempty"`
+	Type int    `json:"type,omitempty"`
+	Pos  int    `json:"pos,omityempty"`
+	Out  string `json:"out,omitempty"`
+}
+
+func (l *Line) String() string {
+	switch l.Type {
+	case LineExitCode:
+		return fmt.Sprintf("[%s] exit code %s", l.Proc, l.Out)
+	default:
+		return fmt.Sprintf("[%s:L%v:%vs] %s", l.Proc, l.Pos, l.Time, l.Out)
+	}
+}
+
+// LineWriter sends logs to the client.
+type LineWriter struct {
+	peer  Peer
+	id    string
+	name  string
+	num   int
+	now   time.Time
+	rep   *strings.Replacer
+	lines []*Line
+}
+
+// NewLineWriter returns a new line reader.
+func NewLineWriter(peer Peer, id, name string, secret ...string) *LineWriter {
+	w := new(LineWriter)
+	w.peer = peer
+	w.id = id
+	w.name = name
+	w.num = 0
+	w.now = time.Now().UTC()
+
+	var oldnew []string
+	for _, old := range secret {
+		oldnew = append(oldnew, old)
+		oldnew = append(oldnew, "********")
+	}
+	if len(oldnew) != 0 {
+		w.rep = strings.NewReplacer(oldnew...)
+	}
+	return w
+}
+
+func (w *LineWriter) Write(p []byte) (n int, err error) {
+	out := string(p)
+	if w.rep != nil {
+		out = w.rep.Replace(out)
+	}
+
+	line := &Line{
+		Out:  out,
+		Proc: w.name,
+		Pos:  w.num,
+		Time: int64(time.Since(w.now).Seconds()),
+		Type: LineStdout,
+	}
+	w.peer.Log(context.Background(), w.id, line)
+	w.num++
+
+	// for _, part := range bytes.Split(p, []byte{'\n'}) {
+	// 	line := &Line{
+	// 		Out:  string(part),
+	// 		Proc: w.name,
+	// 		Pos:  w.num,
+	// 		Time: int64(time.Since(w.now).Seconds()),
+	// 		Type: LineStdout,
+	// 	}
+	// 	w.peer.Log(context.Background(), w.id, line)
+	// 	w.num++
+	// }
+	w.lines = append(w.lines, line)
+	return len(p), nil
+}
+
+// Lines returns the line history
+func (w *LineWriter) Lines() []*Line {
+	return w.lines
+}
+
+// Clear clears the line history
+func (w *LineWriter) Clear() {
+	w.lines = w.lines[:0]
+}