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Merge pull request #51 from jmccann/pretty_out
pretty logging for drone exec
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,67 @@ | ||
package exec | ||
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import ( | ||
"fmt" | ||
"os" | ||
"strings" | ||
"time" | ||
) | ||
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// Identifies the type of line in the logs. | ||
const ( | ||
LineStdout int = iota | ||
LineStderr | ||
LineExitCode | ||
LineMetadata | ||
LineProgress | ||
) | ||
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// 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"` | ||
} | ||
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// LineWriter sends logs to the client. | ||
type LineWriter struct { | ||
name string | ||
num int | ||
now time.Time | ||
rep *strings.Replacer | ||
lines []*Line | ||
} | ||
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// NewLineWriter returns a new line reader. | ||
func NewLineWriter(name string) *LineWriter { | ||
w := new(LineWriter) | ||
w.name = name | ||
w.num = 0 | ||
w.now = time.Now().UTC() | ||
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return w | ||
} | ||
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func (w *LineWriter) Write(p []byte) (n int, err error) { | ||
out := string(p) | ||
if w.rep != nil { | ||
out = w.rep.Replace(out) | ||
} | ||
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line := &Line{ | ||
Out: out, | ||
Proc: w.name, | ||
Pos: w.num, | ||
Time: int64(time.Since(w.now).Seconds()), | ||
Type: LineStdout, | ||
} | ||
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fmt.Fprintf(os.Stderr, "[%s:L%d:%ds] %s", w.name, w.num, int64(time.Since(w.now).Seconds()), out) | ||
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w.num++ | ||
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w.lines = append(w.lines, line) | ||
return len(p), nil | ||
} |