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WIP: Now using event timestamp to retrieve relevant logs. #209

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WIP: Now using event timestamp to retrieve relevant logs. #209

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357e669
Now using event timestamp to retrieve relevant logs.
mattatcha Jun 25, 2016
b8dd210
ignore containers with unsupported log drivers
pmbauer Jul 1, 2016
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68 changes: 15 additions & 53 deletions router/pump.go
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Original file line number Diff line number Diff line change
Expand Up @@ -120,7 +120,7 @@ func (p *LogsPump) Run() error {
p.pumpLogs(&docker.APIEvents{
ID: normalID(listing.ID),
Status: "start",
}, false)
})
}
events := make(chan *docker.APIEvents)
err = p.client.AddEventListener(events)
Expand All @@ -131,7 +131,7 @@ func (p *LogsPump) Run() error {
debug("pump.Run() event:", normalID(event.ID), event.Status)
switch event.Status {
case "start", "restart":
go p.pumpLogs(event, true)
go p.pumpLogs(event)
case "rename":
go p.rename(event)
case "die":
Expand All @@ -141,7 +141,7 @@ func (p *LogsPump) Run() error {
return errors.New("docker event stream closed")
}

func (p *LogsPump) pumpLogs(event *docker.APIEvents, backlog bool) {
func (p *LogsPump) pumpLogs(event *docker.APIEvents) {
id := normalID(event.ID)
container, err := p.client.InspectContainer(id)
assert(err, "pump")
Expand All @@ -158,62 +158,24 @@ func (p *LogsPump) pumpLogs(event *docker.APIEvents, backlog bool) {
return
}

var sinceTime time.Time
if backlog {
sinceTime = time.Unix(0, 0)
} else {
sinceTime = time.Now()
}

p.mu.Lock()
if _, exists := p.pumps[id]; exists {
p.mu.Unlock()
debug("pump.pumpLogs():", id, "pump exists")
return
}
outrd, outwr := io.Pipe()
errrd, errwr := io.Pipe()
p.pumps[id] = newContainerPump(container, outrd, errrd)
p.mu.Unlock()
p.update(event)
go func() {
for {
debug("pump.pumpLogs():", id, "started")
err := p.client.Logs(docker.LogsOptions{
Container: id,
OutputStream: outwr,
ErrorStream: errwr,
Stdout: true,
Stderr: true,
Follow: true,
Tail: "all",
Since: sinceTime.Unix(),
})
if err != nil {
debug("pump.pumpLogs():", id, "stopped with error:", err)
} else {
debug("pump.pumpLogs():", id, "stopped")
}

sinceTime = time.Now()

container, err := p.client.InspectContainer(id)
if err != nil {
_, four04 := err.(*docker.NoSuchContainer)
if !four04 {
assert(err, "pump")
}
} else if container.State.Running {
continue
}

debug("pump.pumpLogs():", id, "dead")
outwr.Close()
errwr.Close()
p.mu.Lock()
delete(p.pumps, id)
p.mu.Unlock()
return
err := p.client.Logs(docker.LogsOptions{
Container: id,
OutputStream: outwr,
ErrorStream: errwr,
Stdout: true,
Stderr: true,
Follow: true,
Tail: "all",
Since: event.Time,
})
if err != nil {
debug("pump.pumpLogs():", id, "stopped:", err)
}
}()
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This kills the work done to fix the fact that we previously didn't reconnect, as mentioned here: #191

}
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