Add observability for flags used in commands

pkg/cmd/root.go

@@ -13,6 +13,7 @@ import (
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/afero"
 	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
 	"github.com/spf13/viper"
 
 	"github.com/stripe/stripe-cli/pkg/cmd/resource"
@@ -62,6 +63,13 @@ var rootCmd = &cobra.Command{
 			telemetryMetadata.SetUserAgent(useragent.GetEncodedUserAgent())
 		}
 
+		flags := []string{}
+		cmd.Flags().Visit(func(flag *pflag.Flag) {
+			flags = append(flags, flag.Name)
+		})
+		flagsStr := strings.Join(flags, ",")
+		telemetryMetadata.SetCommandFlags(flagsStr)
+
 		// plugins send their own telemetry due to having richer context than the CLI does
 		if !plugins.IsPluginCommand(cmd) {
 			// record command invocation

pkg/stripe/analytics_telemetry.go

@@ -38,6 +38,7 @@ type CLIAnalyticsEventMetadata struct {
 	InvocationID      string `url:"invocation_id"`      // The invocation id is unique to each context object and represents all events coming from one command / gRPC method call
 	UserAgent         string `url:"user_agent"`         // the application that is used to create this request
 	CommandPath       string `url:"command_path"`       // the command or gRPC method that initiated this request
+	CommandFlags      string `url:"command_flags"`      // Comma-separated list of flags that were passed to the command (only includes flag names, not their values)
 	Merchant          string `url:"merchant"`           // the merchant ID: ex. acct_xxxx
 	CLIVersion        string `url:"cli_version"`        // the version of the CLI
 	OS                string `url:"os"`                 // the OS of the system
@@ -133,6 +134,11 @@ func (e *CLIAnalyticsEventMetadata) SetCommandPath(commandPath string) {
 	e.CommandPath = commandPath
 }
 
+// SetCommandFlags sets the flags on the CLIAnalyticsEventContext object
+func (e *CLIAnalyticsEventMetadata) SetCommandFlags(commandFlags string) {
+	e.CommandFlags = commandFlags
+}
+
 // SendAPIRequestEvent is a special function for API requests
 func (a *AnalyticsTelemetryClient) SendAPIRequestEvent(ctx context.Context, requestID string, livemode bool) (*http.Response, error) {
 	a.wg.Add(1)