compose/ecs/pkg/amazon/logs.go

64 lines
1.2 KiB
Go

package amazon
import (
"context"
"fmt"
"os"
"os/signal"
"strconv"
"strings"
"github.com/docker/ecs-plugin/pkg/console"
)
func (c *client) ComposeLogs(ctx context.Context, projectName string) error {
err := c.api.GetLogs(ctx, projectName, &logConsumer{
colors: map[string]console.ColorFunc{},
width: 0,
})
if err != nil {
return err
}
signalChan := make(chan os.Signal, 1)
signal.Notify(signalChan, os.Interrupt)
<-signalChan
return nil
}
type logConsumer struct {
colors map[string]console.ColorFunc
width int
}
func (l *logConsumer) Log(service, container, message string) {
cf, ok := l.colors[service]
if !ok {
cf = <-console.Rainbow
l.colors[service] = cf
l.computeWidth()
}
prefix := fmt.Sprintf("%-"+strconv.Itoa(l.width)+"s |", service)
for _, line := range strings.Split(message, "\n") {
fmt.Printf("%s %s\n", cf(prefix), line)
}
}
func (l *logConsumer) computeWidth() {
width := 0
for n := range l.colors {
if len(n) > width {
width = len(n)
}
}
l.width = width + 3
}
type LogConsumer interface {
Log(service, container, message string)
}
type logsAPI interface {
GetLogs(ctx context.Context, name string, consumer LogConsumer) error
}