github.com/pf-qiu/concourse/v6@v6.7.3-0.20201207032516-1f455d73275f/atc/api/workerserver/heartbeat.go (about)

     1  package workerserver
     2  
     3  import (
     4  	"encoding/json"
     5  	"fmt"
     6  	"net/http"
     7  	"time"
     8  
     9  	"github.com/pf-qiu/concourse/v6/atc"
    10  	"github.com/pf-qiu/concourse/v6/atc/api/present"
    11  	"github.com/pf-qiu/concourse/v6/atc/db"
    12  	"github.com/pf-qiu/concourse/v6/atc/metric"
    13  )
    14  
    15  func (s *Server) HeartbeatWorker(w http.ResponseWriter, r *http.Request) {
    16  	var (
    17  		registration atc.Worker
    18  		ttl          time.Duration
    19  		err          error
    20  	)
    21  
    22  	logger := s.logger.Session("heartbeat-worker")
    23  	workerName := r.FormValue(":worker_name")
    24  
    25  	ttlStr := r.URL.Query().Get("ttl")
    26  	if len(ttlStr) > 0 {
    27  		ttl, err = time.ParseDuration(ttlStr)
    28  		if err != nil {
    29  			logger.Error("failed-to-parse-ttl", err)
    30  			w.WriteHeader(http.StatusBadRequest)
    31  			fmt.Fprint(w, "malformed ttl")
    32  			return
    33  		}
    34  	}
    35  
    36  	err = json.NewDecoder(r.Body).Decode(&registration)
    37  	if err != nil {
    38  		w.WriteHeader(http.StatusBadRequest)
    39  		return
    40  	}
    41  
    42  	registration.Name = workerName
    43  
    44  	metric.WorkerContainers{
    45  		WorkerName: registration.Name,
    46  		Containers: registration.ActiveContainers,
    47  		Platform:   registration.Platform,
    48  		TeamName:   registration.Team,
    49  		Tags:       registration.Tags,
    50  	}.Emit(s.logger)
    51  
    52  	metric.WorkerVolumes{
    53  		WorkerName: registration.Name,
    54  		Volumes:    registration.ActiveVolumes,
    55  		Platform:   registration.Platform,
    56  		TeamName:   registration.Team,
    57  		Tags:       registration.Tags,
    58  	}.Emit(s.logger)
    59  
    60  	savedWorker, err := s.dbWorkerFactory.HeartbeatWorker(registration, ttl)
    61  	if err == db.ErrWorkerNotPresent {
    62  		logger.Error("failed-to-find-worker", err)
    63  		w.WriteHeader(http.StatusNotFound)
    64  		return
    65  	}
    66  
    67  	if err != nil {
    68  		logger.Error("failed-to-heartbeat-worker", err)
    69  		w.WriteHeader(http.StatusInternalServerError)
    70  		return
    71  	}
    72  
    73  	activeTasks, err := savedWorker.ActiveTasks()
    74  
    75  	if err != nil {
    76  		logger.Info("failed-to-get-worker-active-tasks")
    77  	}
    78  
    79  	metric.WorkerTasks{
    80  		WorkerName: registration.Name,
    81  		Tasks:      activeTasks,
    82  		Platform:   registration.Platform,
    83  	}.Emit(s.logger)
    84  
    85  	w.Header().Set("Content-Type", "application/json")
    86  	w.WriteHeader(http.StatusOK)
    87  	err = json.NewEncoder(w).Encode(present.Worker(savedWorker))
    88  	if err != nil {
    89  		logger.Error("failed-to-encode-worker", err)
    90  		w.WriteHeader(http.StatusInternalServerError)
    91  	}
    92  }