Add Support for GCP Cloud Functions

providers/gcp/function/functions.go

@@ -0,0 +1,77 @@
+package function
+
+import (
+	"context"
+	"fmt"
+	"regexp"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/tailwarden/komiser/models"
+	"github.com/tailwarden/komiser/providers"
+	"google.golang.org/api/cloudfunctions/v2"
+	"google.golang.org/api/option"
+)
+
+func Functions(ctx context.Context, client providers.ProviderClient) ([]models.Resource, error) {
+	resources := make([]models.Resource, 0)
+
+	cloudFunctionsService, err := cloudfunctions.NewService(ctx, option.WithCredentials(client.GCPClient.Credentials))
+	if err != nil {
+		log.WithError(err).Errorf("failed to create Cloud Functions service")
+		return resources, err
+	}
+
+	functions, err := cloudFunctionsService.Projects.Locations.Functions.List(
+		"projects/" + client.GCPClient.Credentials.ProjectID + "/locations/-",
+	).Do()
+	if err != nil {
+		log.WithError(err).Errorf("failed to list Cloud Functions")
+		return resources, err
+	}
+
+	for _, function := range functions.Functions {
+		fmt.Printf("%+v\n", function)
+
+		re := regexp.MustCompile(`projects\/.*?\/locations\/(.+?)\/functions\/(.+)`)
+		match := re.FindStringSubmatch(function.Name)
+
+		generation := "gen1"
+		functionRegion := ""
+		functionName := function.Name
+
+		if function.Environment == "GEN_2" {
+			generation = "gen2"
+		}
+		if len(match) == 3 {
+			functionRegion = match[1]
+			functionName = match[2]
+
+		}
+
+		resources = append(resources, models.Resource{
+			Provider:   "GCP",
+			Account:    client.Name,
+			Service:    "Cloud Functions",
+			ResourceId: function.Name,
+			Region:     functionRegion,
+			Name:       functionName,
+			Metadata: map[string]string{
+				"Version":       function.Environment,
+				"Last Modified": function.UpdateTime,
+			},
+			FetchedAt: time.Now(),
+			Link:      fmt.Sprintf("https://console.cloud.google.com/functions/details/%s/%s?env=%sproject=%s", functionRegion, functionName, generation, client.GCPClient.Credentials.ProjectID),
+		})
+
+	}
+
+	log.WithFields(log.Fields{
+		"provider":  "GCP",
+		"account":   client.Name,
+		"service":   "Cloud Functions",
+		"resources": len(resources),
+	}).Info("Fetched resources")
+
+	return resources, nil
+}

providers/gcp/gcp.go

@@ -9,6 +9,7 @@ import (
 	certficate "github.com/tailwarden/komiser/providers/gcp/certificate"
 	"github.com/tailwarden/komiser/providers/gcp/compute"
 	"github.com/tailwarden/komiser/providers/gcp/container"
+	"github.com/tailwarden/komiser/providers/gcp/function"
 	"github.com/tailwarden/komiser/providers/gcp/gateway"
 	"github.com/tailwarden/komiser/providers/gcp/iam"
 	"github.com/tailwarden/komiser/providers/gcp/kms"
@@ -33,6 +34,7 @@ func listOfSupportedServices() []providers.FetchDataFunction {
 		container.Clusters,
 		kms.Keys,
 		gateway.ApiGateways,
+		function.Functions,
 	}
 }