mirror of
https://github.com/letic/terraform-provider-google.git
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![Paddy](/assets/img/avatar_default.png)
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.
184 lines
4.0 KiB
Go
184 lines
4.0 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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"errors"
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"fmt"
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"strings"
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"time"
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"go.opencensus.io/exemplar"
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"go.opencensus.io/stats"
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"go.opencensus.io/stats/internal"
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"go.opencensus.io/tag"
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)
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type command interface {
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handleCommand(w *worker)
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}
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// getViewByNameReq is the command to get a view given its name.
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type getViewByNameReq struct {
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name string
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c chan *getViewByNameResp
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}
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type getViewByNameResp struct {
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v *View
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}
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func (cmd *getViewByNameReq) handleCommand(w *worker) {
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v := w.views[cmd.name]
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if v == nil {
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cmd.c <- &getViewByNameResp{nil}
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return
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}
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cmd.c <- &getViewByNameResp{v.view}
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}
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// registerViewReq is the command to register a view.
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type registerViewReq struct {
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views []*View
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err chan error
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}
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func (cmd *registerViewReq) handleCommand(w *worker) {
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var errstr []string
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for _, view := range cmd.views {
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vi, err := w.tryRegisterView(view)
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if err != nil {
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errstr = append(errstr, fmt.Sprintf("%s: %v", view.Name, err))
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continue
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}
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internal.SubscriptionReporter(view.Measure.Name())
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vi.subscribe()
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}
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if len(errstr) > 0 {
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cmd.err <- errors.New(strings.Join(errstr, "\n"))
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} else {
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cmd.err <- nil
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}
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}
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// unregisterFromViewReq is the command to unregister to a view. Has no
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// impact on the data collection for client that are pulling data from the
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// library.
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type unregisterFromViewReq struct {
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views []string
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done chan struct{}
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}
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func (cmd *unregisterFromViewReq) handleCommand(w *worker) {
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for _, name := range cmd.views {
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vi, ok := w.views[name]
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if !ok {
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continue
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}
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// Report pending data for this view before removing it.
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w.reportView(vi, time.Now())
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vi.unsubscribe()
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if !vi.isSubscribed() {
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// this was the last subscription and view is not collecting anymore.
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// The collected data can be cleared.
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vi.clearRows()
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}
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delete(w.views, name)
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}
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cmd.done <- struct{}{}
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}
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// retrieveDataReq is the command to retrieve data for a view.
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type retrieveDataReq struct {
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now time.Time
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v string
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c chan *retrieveDataResp
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}
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type retrieveDataResp struct {
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rows []*Row
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err error
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}
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func (cmd *retrieveDataReq) handleCommand(w *worker) {
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vi, ok := w.views[cmd.v]
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if !ok {
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cmd.c <- &retrieveDataResp{
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nil,
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fmt.Errorf("cannot retrieve data; view %q is not registered", cmd.v),
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}
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return
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}
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if !vi.isSubscribed() {
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cmd.c <- &retrieveDataResp{
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nil,
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fmt.Errorf("cannot retrieve data; view %q has no subscriptions or collection is not forcibly started", cmd.v),
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}
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return
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}
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cmd.c <- &retrieveDataResp{
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vi.collectedRows(),
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nil,
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}
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}
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// recordReq is the command to record data related to multiple measures
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// at once.
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type recordReq struct {
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tm *tag.Map
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ms []stats.Measurement
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attachments map[string]string
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t time.Time
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}
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func (cmd *recordReq) handleCommand(w *worker) {
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for _, m := range cmd.ms {
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if (m == stats.Measurement{}) { // not registered
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continue
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}
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ref := w.getMeasureRef(m.Measure().Name())
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for v := range ref.views {
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e := &exemplar.Exemplar{
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Value: m.Value(),
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Timestamp: cmd.t,
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Attachments: cmd.attachments,
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}
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v.addSample(cmd.tm, e)
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}
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}
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}
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// setReportingPeriodReq is the command to modify the duration between
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// reporting the collected data to the registered clients.
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type setReportingPeriodReq struct {
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d time.Duration
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c chan bool
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}
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func (cmd *setReportingPeriodReq) handleCommand(w *worker) {
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w.timer.Stop()
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if cmd.d <= 0 {
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w.timer = time.NewTicker(defaultReportingDuration)
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} else {
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w.timer = time.NewTicker(cmd.d)
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}
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cmd.c <- true
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}
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