Add metric for the count of skaffold configurations in current sessio…

…n; fix the build platform type metric to save list of all platforms (#5437)

* Add metric for the count of skaffold configurations in current session; fix the build platform type metric to save list of all platforms

* change `uint32` to `int`; appease linters

pkg/skaffold/instrumentation/export.go

@@ -146,6 +146,7 @@ func createMetrics(ctx context.Context, meter skaffoldMeter) {
 		label.String("command", meter.Command),
 		label.String("error", meter.ErrorCode.String()),
 		label.String("platform_type", meter.PlatformType),
+		label.Int("config_count", meter.ConfigCount),
 		randLabel,
 	}
 

pkg/skaffold/instrumentation/export_test.go

@@ -51,6 +51,7 @@ func TestExportMetrics(t *testing.T) {
 		Version:           "vTest.0",
 		Arch:              "test arch",
 		OS:                "test os",
+		ConfigCount:       1,
 		Deployers:         []string{"test kubectl"},
 		Builders:          map[string]int{"docker": 1, "buildpacks": 1},
 		BuildDependencies: map[string]int{"docker": 1},
@@ -63,7 +64,8 @@ func TestExportMetrics(t *testing.T) {
 		Version:           "vTest.1",
 		Arch:              "test arch 2",
 		OS:                "test os 2",
-		PlatformType:      "test platform",
+		ConfigCount:       2,
+		PlatformType:      "test platform 1:test platform 2",
 		Deployers:         []string{"test helm", "test kpt"},
 		SyncType:          map[string]bool{"manual": true},
 		EnumFlags:         map[string]string{"test_run": "test_run_value"},
@@ -79,6 +81,7 @@ func TestExportMetrics(t *testing.T) {
 		Version:       "vTest.2",
 		Arch:          "test arch 1",
 		OS:            "test os 2",
+		ConfigCount:   2,
 		PlatformType:  "test platform",
 		Deployers:     []string{"test helm", "test kpt"},
 		SyncType:      map[string]bool{"manual": true, "sync": true},

pkg/skaffold/instrumentation/meter.go

@@ -19,6 +19,7 @@ package instrumentation
 import (
 	"net/http"
 	"runtime"
+	"strings"
 	"time"
 
 	flag "github.com/spf13/pflag"
@@ -74,8 +75,12 @@ func SetOnlineStatus() {
 }
 
 func InitMeterFromConfig(configs []*latest.SkaffoldConfig) {
-	meter.PlatformType = yamltags.GetYamlTag(configs[0].Build.BuildType) // TODO: support multiple build types in events.
+	var platforms []string
 	for _, config := range configs {
+		pl := yamltags.GetYamlTag(config.Build.BuildType)
+		if !util.StrSliceContains(platforms, pl) {
+			platforms = append(platforms, pl)
+		}
 		for _, artifact := range config.Pipeline.Build.Artifacts {
 			meter.Builders[yamltags.GetYamlTag(artifact.ArtifactType)]++
 			if len(artifact.Dependencies) > 0 {
@@ -88,6 +93,8 @@ func InitMeterFromConfig(configs []*latest.SkaffoldConfig) {
 		meter.Deployers = append(meter.Deployers, yamltags.GetYamlTags(config.Deploy.DeployType)...)
 		meter.BuildArtifacts += len(config.Pipeline.Build.Artifacts)
 	}
+	meter.PlatformType = strings.Join(platforms, ":")
+	meter.ConfigCount = len(configs)
 }
 
 func SetCommand(cmd string) {

pkg/skaffold/instrumentation/types.go

@@ -26,6 +26,9 @@ import (
 
 // skaffoldMeter describes the data used to determine operational metrics.
 type skaffoldMeter struct {
+	// ConfigCount is the number of parsed skaffold configurations in the current session.
+	ConfigCount int
+
 	// ExitCode Exit code returned by Skaffold at the end of execution.
 	ExitCode int
 
@@ -45,7 +48,7 @@ type skaffoldMeter struct {
 	// Arch Architecture running Skaffold e.g. amd64, arm64, etc.
 	Arch string
 
-	// PlatformType Where Skaffold is deploying to (local, cluster, or Google Cloud Build).
+	// PlatformType Where Skaffold is building artifacts (local, cluster, Google Cloud Build, or a combination of them).
 	PlatformType string
 
 	// Deployers All the deployers used in the Skaffold execution.