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/view.go | 183 ----------------------------- 1 file changed, 183 deletions(-) delete mode 100644 vendor/go.opencensus.io/stats/view/view.go (limited to 'vendor/go.opencensus.io/stats/view/view.go') diff --git a/vendor/go.opencensus.io/stats/view/view.go b/vendor/go.opencensus.io/stats/view/view.go deleted file mode 100644 index 22323e2..0000000 --- a/vendor/go.opencensus.io/stats/view/view.go +++ /dev/null @@ -1,183 +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 ( - "bytes" - "fmt" - "reflect" - "sort" - "sync/atomic" - "time" - - "go.opencensus.io/stats" - "go.opencensus.io/stats/internal" - "go.opencensus.io/tag" -) - -// View allows users to aggregate the recorded stats.Measurements. -// Views need to be passed to the Register function to be before data will be -// collected and sent to Exporters. -type View struct { - Name string // Name of View. Must be unique. If unset, will default to the name of the Measure. - Description string // Description is a human-readable description for this view. - - // TagKeys are the tag keys describing the grouping of this view. - // A single Row will be produced for each combination of associated tag values. - TagKeys []tag.Key - - // Measure is a stats.Measure to aggregate in this view. - Measure stats.Measure - - // Aggregation is the aggregation function tp apply to the set of Measurements. - Aggregation *Aggregation -} - -// WithName returns a copy of the View with a new name. This is useful for -// renaming views to cope with limitations placed on metric names by various -// backends. -func (v *View) WithName(name string) *View { - vNew := *v - vNew.Name = name - return &vNew -} - -// same compares two views and returns true if they represent the same aggregation. -func (v *View) same(other *View) bool { - if v == other { - return true - } - if v == nil { - return false - } - return reflect.DeepEqual(v.Aggregation, other.Aggregation) && - v.Measure.Name() == other.Measure.Name() -} - -// canonicalize canonicalizes v by setting explicit -// defaults for Name and Description and sorting the TagKeys -func (v *View) canonicalize() error { - if v.Measure == nil { - return fmt.Errorf("cannot register view %q: measure not set", v.Name) - } - if v.Aggregation == nil { - return fmt.Errorf("cannot register view %q: aggregation not set", v.Name) - } - if v.Name == "" { - v.Name = v.Measure.Name() - } - if v.Description == "" { - v.Description = v.Measure.Description() - } - if err := checkViewName(v.Name); err != nil { - return err - } - sort.Slice(v.TagKeys, func(i, j int) bool { - return v.TagKeys[i].Name() < v.TagKeys[j].Name() - }) - return nil -} - -// viewInternal is the internal representation of a View. -type viewInternal struct { - view *View // view is the canonicalized View definition associated with this view. - subscribed uint32 // 1 if someone is subscribed and data need to be exported, use atomic to access - collector *collector -} - -func newViewInternal(v *View) (*viewInternal, error) { - return &viewInternal{ - view: v, - collector: &collector{make(map[string]AggregationData), v.Aggregation}, - }, nil -} - -func (v *viewInternal) subscribe() { - atomic.StoreUint32(&v.subscribed, 1) -} - -func (v *viewInternal) unsubscribe() { - atomic.StoreUint32(&v.subscribed, 0) -} - -// isSubscribed returns true if the view is exporting -// data by subscription. -func (v *viewInternal) isSubscribed() bool { - return atomic.LoadUint32(&v.subscribed) == 1 -} - -func (v *viewInternal) clearRows() { - v.collector.clearRows() -} - -func (v *viewInternal) collectedRows() []*Row { - return v.collector.collectedRows(v.view.TagKeys) -} - -func (v *viewInternal) addSample(m *tag.Map, val float64) { - if !v.isSubscribed() { - return - } - sig := string(encodeWithKeys(m, v.view.TagKeys)) - v.collector.addSample(sig, val) -} - -// A Data is a set of rows about usage of the single measure associated -// with the given view. Each row is specific to a unique set of tags. -type Data struct { - View *View - Start, End time.Time - Rows []*Row -} - -// Row is the collected value for a specific set of key value pairs a.k.a tags. -type Row struct { - Tags []tag.Tag - Data AggregationData -} - -func (r *Row) String() string { - var buffer bytes.Buffer - buffer.WriteString("{ ") - buffer.WriteString("{ ") - for _, t := range r.Tags { - buffer.WriteString(fmt.Sprintf("{%v %v}", t.Key.Name(), t.Value)) - } - buffer.WriteString(" }") - buffer.WriteString(fmt.Sprintf("%v", r.Data)) - buffer.WriteString(" }") - return buffer.String() -} - -// Equal returns true if both rows are equal. Tags are expected to be ordered -// by the key name. Even both rows have the same tags but the tags appear in -// different orders it will return false. -func (r *Row) Equal(other *Row) bool { - if r == other { - return true - } - return reflect.DeepEqual(r.Tags, other.Tags) && r.Data.equal(other.Data) -} - -func checkViewName(name string) error { - if len(name) > internal.MaxNameLength { - return fmt.Errorf("view name cannot be larger than %v", internal.MaxNameLength) - } - if !internal.IsPrintable(name) { - return fmt.Errorf("view name needs to be an ASCII string") - } - return nil -} -- cgit v1.2.3