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heartbeat.go
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/
heartbeat.go
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package workerserver
import (
"encoding/json"
"fmt"
"net/http"
"time"
"github.com/concourse/atc"
"github.com/concourse/atc/api/present"
"github.com/concourse/atc/dbng"
"github.com/concourse/atc/metric"
)
func (s *Server) HeartbeatWorker(w http.ResponseWriter, r *http.Request) {
var (
registration atc.Worker
ttl time.Duration
err error
)
logger := s.logger.Session("heartbeat-worker")
workerName := r.FormValue(":worker_name")
ttlStr := r.URL.Query().Get("ttl")
if len(ttlStr) > 0 {
ttl, err = time.ParseDuration(ttlStr)
if err != nil {
logger.Error("failed-to-parse-ttl", err)
w.WriteHeader(http.StatusBadRequest)
fmt.Fprint(w, "malformed ttl")
return
}
}
err = json.NewDecoder(r.Body).Decode(®istration)
if err != nil {
w.WriteHeader(http.StatusBadRequest)
return
}
registration.Name = workerName
metric.WorkerContainers{
WorkerName: registration.Name,
Containers: registration.ActiveContainers,
}.Emit(s.logger)
savedWorker, err := s.dbWorkerFactory.HeartbeatWorker(registration, ttl)
if err == dbng.ErrWorkerNotPresent {
logger.Error("failed-to-find-worker", err)
w.WriteHeader(http.StatusNotFound)
return
}
if err != nil {
logger.Error("failed-to-heartbeat-worker", err)
w.WriteHeader(http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(present.Worker(savedWorker))
}