Metrics2: Store a registry of Counters

go/buildbot/local_db.go

 package buildbot
 
 import (
         "bytes"
         "encoding/binary"
         "encoding/gob"
         "fmt"
         "net/http"
         "strconv"
         "strings"
@@ skipping 170 matching lines @@
 }
 
 // NewLocalDB returns a local DB instance.
 func NewLocalDB(filename string) (DB, error) {
         d, err := bolt.Open(filename, 0600, nil)
         if err != nil {
                 return nil, err
         }
         db := &localDB{
                 db: d,
-                txCount: metrics2.NewCounter("db-active-tx", map[string]string{
+                txCount: metrics2.GetCounter("db-active-tx", map[string]string{
                         "database": "buildbot",
                 }),
                 txNextId: 0,
                 txActive: map[int64]string{},
                 txMutex:  sync.RWMutex{},
         }
         go func() {
                 for _ = range time.Tick(time.Minute) {
                         db.reportActiveTx()
                 }
@@ skipping 785 matching lines @@
                         w.Header().Set("Content-Length", strconv.Itoa(int(tx.Size())))
                         _, err := tx.WriteTo(w)
                         return err
                 }); err != nil {
                         httputils.ReportError(w, r, err, fmt.Sprintf("Failed to create DB backup: %s", err))
                 }
         })
         http.Handle("/", httputils.LoggingGzipRequestResponse(r))
         return http.ListenAndServe(port, nil)
 }