mirror of
https://github.com/letic/terraform-provider-google.git
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961c878e0d
Switch to using Go modules. This migrates our vendor.json to use Go 1.11's modules system, and replaces the vendor folder with the output of go mod vendor. The vendored code should remain basically the same; I believe some tree shaking of packages and support scripts/licenses/READMEs/etc. happened. This also fixes Travis and our Makefile to no longer use govendor.
88 lines
2.4 KiB
Go
88 lines
2.4 KiB
Go
// Copyright 2017, OpenCensus Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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package view
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import (
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"sort"
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"go.opencensus.io/exemplar"
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"go.opencensus.io/internal/tagencoding"
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"go.opencensus.io/tag"
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)
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type collector struct {
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// signatures holds the aggregations values for each unique tag signature
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// (values for all keys) to its aggregator.
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signatures map[string]AggregationData
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// Aggregation is the description of the aggregation to perform for this
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// view.
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a *Aggregation
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}
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func (c *collector) addSample(s string, e *exemplar.Exemplar) {
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aggregator, ok := c.signatures[s]
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if !ok {
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aggregator = c.a.newData()
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c.signatures[s] = aggregator
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}
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aggregator.addSample(e)
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}
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// collectRows returns a snapshot of the collected Row values.
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func (c *collector) collectedRows(keys []tag.Key) []*Row {
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rows := make([]*Row, 0, len(c.signatures))
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for sig, aggregator := range c.signatures {
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tags := decodeTags([]byte(sig), keys)
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row := &Row{Tags: tags, Data: aggregator.clone()}
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rows = append(rows, row)
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}
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return rows
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}
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func (c *collector) clearRows() {
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c.signatures = make(map[string]AggregationData)
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}
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// encodeWithKeys encodes the map by using values
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// only associated with the keys provided.
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func encodeWithKeys(m *tag.Map, keys []tag.Key) []byte {
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vb := &tagencoding.Values{
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Buffer: make([]byte, len(keys)),
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}
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for _, k := range keys {
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v, _ := m.Value(k)
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vb.WriteValue([]byte(v))
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}
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return vb.Bytes()
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}
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// decodeTags decodes tags from the buffer and
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// orders them by the keys.
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func decodeTags(buf []byte, keys []tag.Key) []tag.Tag {
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vb := &tagencoding.Values{Buffer: buf}
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var tags []tag.Tag
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for _, k := range keys {
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v := vb.ReadValue()
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if v != nil {
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tags = append(tags, tag.Tag{Key: k, Value: string(v)})
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}
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}
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vb.ReadIndex = 0
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sort.Slice(tags, func(i, j int) bool { return tags[i].Key.Name() < tags[j].Key.Name() })
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return tags
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}
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