telemetry.go

     1  // Copyright 2024 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Package telemetrycmd implements the "go telemetry" command.
     6  package telemetrycmd
     7  
     8  import (
     9  	"context"
    10  	"fmt"
    11  	"os"
    12  
    13  	"cmd/go/internal/base"
    14  	"cmd/internal/telemetry"
    15  )
    16  
    17  var CmdTelemetry = &base.Command{
    18  	UsageLine: "go telemetry [off|local|on]",
    19  	Short:     "manage telemetry data and settings",
    20  	Long: `Telemetry is used to manage Go telemetry data and settings.
    21  
    22  Telemetry can be in one of three modes: off, local, or on.
    23  
    24  When telemetry is in local mode, counter data is written to the local file
    25  system, but will not be uploaded to remote servers.
    26  
    27  When telemetry is off, local counter data is neither collected nor uploaded.
    28  
    29  When telemetry is on, telemetry data is written to the local file system
    30  and periodically sent to https://telemetry.go.dev/. Uploaded data is used to
    31  help improve the Go toolchain and related tools, and it will be published as
    32  part of a public dataset.
    33  
    34  For more details, see https://telemetry.go.dev/privacy.
    35  This data is collected in accordance with the Google Privacy Policy
    36  (https://policies.google.com/privacy).
    37  
    38  To view the current telemetry mode, run "go telemetry".
    39  To disable telemetry uploading, but keep local data collection, run
    40  "go telemetry local".
    41  To enable both collection and uploading, run “go telemetry on”.
    42  To disable both collection and uploading, run "go telemetry off".
    43  
    44  See https://go.dev/doc/telemetry for more information on telemetry.
    45  `,
    46  	Run: runTelemetry,
    47  }
    48  
    49  func init() {
    50  	base.AddChdirFlag(&CmdTelemetry.Flag)
    51  }
    52  
    53  func runTelemetry(ctx context.Context, cmd *base.Command, args []string) {
    54  	if len(args) == 0 {
    55  		fmt.Println(telemetry.Mode())
    56  		return
    57  	}
    58  
    59  	if len(args) != 1 {
    60  		cmd.Usage()
    61  	}
    62  
    63  	mode := args[0]
    64  	if mode != "local" && mode != "off" && mode != "on" {
    65  		cmd.Usage()
    66  	}
    67  	if old := telemetry.Mode(); old == mode {
    68  		return
    69  	}
    70  
    71  	if err := telemetry.SetMode(mode); err != nil {
    72  		base.Fatalf("go: failed to set the telemetry mode to %s: %v", mode, err)
    73  	}
    74  	if mode == "on" {
    75  		fmt.Fprintln(os.Stderr, telemetryOnMessage())
    76  	}
    77  }
    78  
    79  func telemetryOnMessage() string {
    80  	return `Telemetry uploading is now enabled and data will be periodically sent to
    81  https://telemetry.go.dev/. Uploaded data is used to help improve the Go
    82  toolchain and related tools, and it will be published as part of a public
    83  dataset.
    84  
    85  For more details, see https://telemetry.go.dev/privacy.
    86  This data is collected in accordance with the Google Privacy Policy
    87  (https://policies.google.com/privacy).
    88  
    89  To disable telemetry uploading, but keep local data collection, run
    90  “go telemetry local”.
    91  To disable both collection and uploading, run “go telemetry off“.`
    92  }
    93
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