github.com/bdwilliams/libcompose@v0.3.1-0.20160826154243-d81a9bdacff0/project/listener.go (about)

     1  package project
     2  
     3  import (
     4  	"bytes"
     5  
     6  	"github.com/Sirupsen/logrus"
     7  	"github.com/docker/libcompose/project/events"
     8  )
     9  
    10  var (
    11  	infoEvents = map[events.EventType]bool{
    12  		events.ServiceDeleteStart:  true,
    13  		events.ServiceDelete:       true,
    14  		events.ServiceDownStart:    true,
    15  		events.ServiceDown:         true,
    16  		events.ServiceStopStart:    true,
    17  		events.ServiceStop:         true,
    18  		events.ServiceKillStart:    true,
    19  		events.ServiceKill:         true,
    20  		events.ServiceCreateStart:  true,
    21  		events.ServiceCreate:       true,
    22  		events.ServiceStartStart:   true,
    23  		events.ServiceStart:        true,
    24  		events.ServiceRestartStart: true,
    25  		events.ServiceRestart:      true,
    26  		events.ServiceUpStart:      true,
    27  		events.ServiceUp:           true,
    28  		events.ServicePauseStart:   true,
    29  		events.ServicePause:        true,
    30  		events.ServiceUnpauseStart: true,
    31  		events.ServiceUnpause:      true,
    32  	}
    33  )
    34  
    35  type defaultListener struct {
    36  	project    *Project
    37  	listenChan chan events.Event
    38  	upCount    int
    39  }
    40  
    41  // NewDefaultListener create a default listener for the specified project.
    42  func NewDefaultListener(p *Project) chan<- events.Event {
    43  	l := defaultListener{
    44  		listenChan: make(chan events.Event),
    45  		project:    p,
    46  	}
    47  	go l.start()
    48  	return l.listenChan
    49  }
    50  
    51  func (d *defaultListener) start() {
    52  	for event := range d.listenChan {
    53  		buffer := bytes.NewBuffer(nil)
    54  		if event.Data != nil {
    55  			for k, v := range event.Data {
    56  				if buffer.Len() > 0 {
    57  					buffer.WriteString(", ")
    58  				}
    59  				buffer.WriteString(k)
    60  				buffer.WriteString("=")
    61  				buffer.WriteString(v)
    62  			}
    63  		}
    64  
    65  		if event.EventType == events.ServiceUp {
    66  			d.upCount++
    67  		}
    68  
    69  		logf := logrus.Debugf
    70  
    71  		if infoEvents[event.EventType] {
    72  			logf = logrus.Infof
    73  		}
    74  
    75  		if event.ServiceName == "" {
    76  			logf("Project [%s]: %s %s", d.project.Name, event.EventType, buffer.Bytes())
    77  		} else {
    78  			logf("[%d/%d] [%s]: %s %s", d.upCount, d.project.ServiceConfigs.Len(), event.ServiceName, event.EventType, buffer.Bytes())
    79  		}
    80  	}
    81  }