alexandre-normand/slackscot

package slackscot

// DO NOT EDIT!
// This code is generated with http://github.com/hexdigest/gowrap tool
// using opentelemetry.template template

//go:generate gowrap gen -p github.com/alexandre-normand/slackscot -i FileUploader -t opentelemetry.template -o fileuploadermetrics.go

import (
    "context"
    "time"
    "unicode"

    "github.com/slack-go/slack"
    "go.opentelemetry.io/otel/label"
    "go.opentelemetry.io/otel/metric"
)

// FileUploaderWithTelemetry implements FileUploader interface with all methods wrapped
// with open telemetry metrics
type FileUploaderWithTelemetry struct {
    base                     FileUploader
    methodCounters           map[string]metric.BoundInt64Counter
    errCounters              map[string]metric.BoundInt64Counter
    methodTimeValueRecorders map[string]metric.BoundInt64ValueRecorder
}

// NewFileUploaderWithTelemetry returns an instance of the FileUploader decorated with open telemetry timing and count metrics
func NewFileUploaderWithTelemetry(base FileUploader, name string, meter metric.Meter) FileUploaderWithTelemetry {
    return FileUploaderWithTelemetry{
        base:                     base,
        methodCounters:           newFileUploaderMethodCounters("Calls", name, meter),
        errCounters:              newFileUploaderMethodCounters("Errors", name, meter),
        methodTimeValueRecorders: newFileUploaderMethodTimeValueRecorders(name, meter),
    }
}

func newFileUploaderMethodTimeValueRecorders(appName string, meter metric.Meter) (boundTimeValueRecorders map[string]metric.BoundInt64ValueRecorder) {
    boundTimeValueRecorders = make(map[string]metric.BoundInt64ValueRecorder)
    mt := metric.Must(meter)

    nUploadFileValRecorder := []rune("FileUploader_UploadFile_ProcessingTimeMillis")
    nUploadFileValRecorder[0] = unicode.ToLower(nUploadFileValRecorder[0])
    mUploadFile := mt.NewInt64ValueRecorder(string(nUploadFileValRecorder))
    boundTimeValueRecorders["UploadFile"] = mUploadFile.Bind(label.String("name", appName))

    return boundTimeValueRecorders
}

func newFileUploaderMethodCounters(suffix string, appName string, meter metric.Meter) (boundCounters map[string]metric.BoundInt64Counter) {
    boundCounters = make(map[string]metric.BoundInt64Counter)
    mt := metric.Must(meter)

    nUploadFileCounter := []rune("FileUploader_UploadFile_" + suffix)
    nUploadFileCounter[0] = unicode.ToLower(nUploadFileCounter[0])
    cUploadFile := mt.NewInt64Counter(string(nUploadFileCounter))
    boundCounters["UploadFile"] = cUploadFile.Bind(label.String("name", appName))

    return boundCounters
}

// UploadFile implements FileUploader
func (_d FileUploaderWithTelemetry) UploadFile(params slack.FileUploadParameters, options ...UploadOption) (file *slack.File, err error) {
    _since := time.Now()
    defer func() {
        if err != nil {
            errCounter := _d.errCounters["UploadFile"]
            errCounter.Add(context.Background(), 1)
        }

        methodCounter := _d.methodCounters["UploadFile"]
        methodCounter.Add(context.Background(), 1)

        methodTimeMeasure := _d.methodTimeValueRecorders["UploadFile"]
        methodTimeMeasure.Record(context.Background(), time.Since(_since).Milliseconds())
    }()
    return _d.base.UploadFile(params, options...)
}