From 8c12c6939aab9106db14ec2d11d983bc5b29fb2c Mon Sep 17 00:00:00 2001 From: Niall Sheridan Date: Sun, 7 Jul 2019 21:33:44 +0100 Subject: Switch to modules --- vendor/go.opencensus.io/stats/view/worker.go | 223 --------------------------- 1 file changed, 223 deletions(-) delete mode 100644 vendor/go.opencensus.io/stats/view/worker.go (limited to 'vendor/go.opencensus.io/stats/view/worker.go') diff --git a/vendor/go.opencensus.io/stats/view/worker.go b/vendor/go.opencensus.io/stats/view/worker.go deleted file mode 100644 index fef7bf5..0000000 --- a/vendor/go.opencensus.io/stats/view/worker.go +++ /dev/null @@ -1,223 +0,0 @@ -// Copyright 2017, OpenCensus Authors -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// - -package view - -import ( - "fmt" - "time" - - "go.opencensus.io/stats" - "go.opencensus.io/stats/internal" - "go.opencensus.io/tag" -) - -func init() { - defaultWorker = newWorker() - go defaultWorker.start() - internal.DefaultRecorder = record -} - -type measureRef struct { - measure string - views map[*viewInternal]struct{} -} - -type worker struct { - measures map[string]*measureRef - views map[string]*viewInternal - startTimes map[*viewInternal]time.Time - - timer *time.Ticker - c chan command - quit, done chan bool -} - -var defaultWorker *worker - -var defaultReportingDuration = 10 * time.Second - -// Find returns a registered view associated with this name. -// If no registered view is found, nil is returned. -func Find(name string) (v *View) { - req := &getViewByNameReq{ - name: name, - c: make(chan *getViewByNameResp), - } - defaultWorker.c <- req - resp := <-req.c - return resp.v -} - -// Register begins collecting data for the given views. -// Once a view is registered, it reports data to the registered exporters. -func Register(views ...*View) error { - for _, v := range views { - if err := v.canonicalize(); err != nil { - return err - } - } - req := ®isterViewReq{ - views: views, - err: make(chan error), - } - defaultWorker.c <- req - return <-req.err -} - -// Unregister the given views. Data will not longer be exported for these views -// after Unregister returns. -// It is not necessary to unregister from views you expect to collect for the -// duration of your program execution. -func Unregister(views ...*View) { - names := make([]string, len(views)) - for i := range views { - names[i] = views[i].Name - } - req := &unregisterFromViewReq{ - views: names, - done: make(chan struct{}), - } - defaultWorker.c <- req - <-req.done -} - -// RetrieveData gets a snapshot of the data collected for the the view registered -// with the given name. It is intended for testing only. -func RetrieveData(viewName string) ([]*Row, error) { - req := &retrieveDataReq{ - now: time.Now(), - v: viewName, - c: make(chan *retrieveDataResp), - } - defaultWorker.c <- req - resp := <-req.c - return resp.rows, resp.err -} - -func record(tags *tag.Map, ms interface{}) { - req := &recordReq{ - tm: tags, - ms: ms.([]stats.Measurement), - } - defaultWorker.c <- req -} - -// SetReportingPeriod sets the interval between reporting aggregated views in -// the program. If duration is less than or -// equal to zero, it enables the default behavior. -func SetReportingPeriod(d time.Duration) { - // TODO(acetechnologist): ensure that the duration d is more than a certain - // value. e.g. 1s - req := &setReportingPeriodReq{ - d: d, - c: make(chan bool), - } - defaultWorker.c <- req - <-req.c // don't return until the timer is set to the new duration. -} - -func newWorker() *worker { - return &worker{ - measures: make(map[string]*measureRef), - views: make(map[string]*viewInternal), - startTimes: make(map[*viewInternal]time.Time), - timer: time.NewTicker(defaultReportingDuration), - c: make(chan command, 1024), - quit: make(chan bool), - done: make(chan bool), - } -} - -func (w *worker) start() { - for { - select { - case cmd := <-w.c: - cmd.handleCommand(w) - case <-w.timer.C: - w.reportUsage(time.Now()) - case <-w.quit: - w.timer.Stop() - close(w.c) - w.done <- true - return - } - } -} - -func (w *worker) stop() { - w.quit <- true - <-w.done -} - -func (w *worker) getMeasureRef(name string) *measureRef { - if mr, ok := w.measures[name]; ok { - return mr - } - mr := &measureRef{ - measure: name, - views: make(map[*viewInternal]struct{}), - } - w.measures[name] = mr - return mr -} - -func (w *worker) tryRegisterView(v *View) (*viewInternal, error) { - vi, err := newViewInternal(v) - if err != nil { - return nil, err - } - if x, ok := w.views[vi.view.Name]; ok { - if !x.view.same(vi.view) { - return nil, fmt.Errorf("cannot register view %q; a different view with the same name is already registered", v.Name) - } - - // the view is already registered so there is nothing to do and the - // command is considered successful. - return x, nil - } - w.views[vi.view.Name] = vi - ref := w.getMeasureRef(vi.view.Measure.Name()) - ref.views[vi] = struct{}{} - return vi, nil -} - -func (w *worker) reportView(v *viewInternal, now time.Time) { - if !v.isSubscribed() { - return - } - rows := v.collectedRows() - _, ok := w.startTimes[v] - if !ok { - w.startTimes[v] = now - } - viewData := &Data{ - View: v.view, - Start: w.startTimes[v], - End: time.Now(), - Rows: rows, - } - exportersMu.Lock() - for e := range exporters { - e.ExportView(viewData) - } - exportersMu.Unlock() -} - -func (w *worker) reportUsage(now time.Time) { - for _, v := range w.views { - w.reportView(v, now) - } -} -- cgit v1.2.3