(not .Values.meshConfig.defaultProviders)
  .Values.telemetry.enabled .Values.telemetry.v2.enabled .Values.telemetry.v2.prometheus.enabled
}}
{{- end }}

{{/* SD has metrics and logging split. Default metrics are enabled if SD is enabled */}}
{{ define "default-sd-metrics" }}
{{- and
  (not .Values.meshConfig.defaultProviders)
  .Values.telemetry.enabled .Values.telemetry.v2.enabled .Values.telemetry.v2.stackdriver.enabled
}}
{{- end }}

  (not .Values.meshConfig.defaultProviders)
  .Values.telemetry.enabled .Values.telemetry.v2.enabled .Values.telemetry.v2.prometheus.enabled
}}
{{- end }}

{{/* SD has metrics and logging split. Default metrics are enabled if SD is enabled */}}
{{ define "default-sd-metrics" }}
{{- and
  (not .Values.meshConfig.defaultProviders)
  .Values.telemetry.enabled .Values.telemetry.v2.enabled .Values.telemetry.v2.stackdriver.enabled
}}
{{- end }}

		len(meshConfig.DefaultProviders.AccessLogging) == 0 {
		c.ForEach(gvk.Telemetry, func(r *resource.Instance) bool {
			telemetry := r.Message.(*telemetryapi.Telemetry)

			for _, l := range telemetry.AccessLogging {
				if l.Disabled != nil && l.Disabled.Value {
					continue
				}
				if len(l.Providers) == 0 {
					c.Report(gvk.Telemetry,

// license that can be found in the LICENSE file.

package telemetry

import (
	"fmt"
	"log"
	"os"
	"os/exec"
	"path/filepath"
	"sync"
	"time"

	"golang.org/x/sync/errgroup"
	"golang.org/x/telemetry/counter"
	"golang.org/x/telemetry/internal/crashmonitor"
	"golang.org/x/telemetry/internal/telemetry"
	"golang.org/x/telemetry/internal/upload"
)

// Config controls the behavior of [Start].

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package telemetry manages the telemetry mode file.
package telemetry

import (
	"fmt"
	"os"
	"path/filepath"
	"runtime"
	"strings"
	"time"
)

// Default is the default directory containing Go telemetry configuration and
// data.
//
// If Default is uninitialized, Default.Mode will be "off". As a consequence,

// limitations under the License.
package telemetry

import (
	"istio.io/api/telemetry/v1alpha1"
	"istio.io/istio/pkg/config"
	"istio.io/istio/pkg/config/analysis"
	"istio.io/istio/pkg/config/analysis/msg"
	"istio.io/istio/pkg/config/resource"
	"istio.io/istio/pkg/config/schema/gvk"
)

// DefaultSelectorAnalyzer validates, per namespace, that there aren't multiple
// telemetry resources that have no selector. This is distinct from

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package telemetry

import "golang.org/x/telemetry/internal/telemetry"

// Dir returns the telemetry directory.
func Dir() string {
	return telemetry.Default.Dir()

	"strings"
	"time"

	"golang.org/x/telemetry/internal/configstore"
	"golang.org/x/telemetry/internal/telemetry"
)

// RunConfig configures non-default behavior of a call to Run.
//
// All fields are optional, for testing or observability.
type RunConfig struct {
	TelemetryDir string    // if set, overrides the telemetry data directory
	UploadURL    string    // if set, overrides the telemetry upload endpoint

		}
	}
	if len(providerNames) == 0 {
		return
	}

	c.ForEach(gvk.Telemetry, func(r *resource.Instance) bool {
		telemetry := r.Message.(*telemetryapi.Telemetry)
		for _, tracing := range telemetry.Tracing {
			for _, p := range tracing.Providers {
				if providerNames.Contains(p.Name) {
					c.Report(gvk.Telemetry,

# Open Telemetry with Loki

This sample demonstrates Istio's Open Telemetry [ALS(Access Log Service)](https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/access_loggers/grpc/v3/als.proto) and sending logs to [Loki](https://github.com/grafana/loki).

## Install Istio

Run the following script to install Istio with an Open Telemetry ALS provider:

```bash
istioctl install -f iop.yaml -y
```

## Setup Loki