ROX-16507: Download ACS Operator CRDs dynamically

fleetshard/pkg/central/charts/charts.go

@@ -4,7 +4,10 @@ package charts
 import (
 	"embed"
 	"fmt"
+	"io"
 	"io/fs"
+	"net/http"
+	"os"
 	"path"
 	"strings"
 
@@ -65,3 +68,27 @@ func MustGetChart(name string) *chart.Chart {
 	}
 	return chrt
 }
+
+// DownloadTemplate downloads a file from the URL to the templates folder of specified chart
+func DownloadTemplate(url string, chartName string) error {
+	resp, err := http.Get(url)
+	if err != nil {
+		return fmt.Errorf("failed Get for %s: %w", url, err)
+	}
+	defer resp.Body.Close()
+
+	// generate the filename from the URL
+	filename := url[strings.LastIndex(url, "/")+1:]
+	filepath := path.Join("data", chartName, "templates", filename)
+	out, err := os.Create(filepath)
+	if err != nil {
+		return fmt.Errorf("cannot create file %s: %w", filepath, err)
+	}
+	defer out.Close()
+
+	if _, err = io.Copy(out, resp.Body); err != nil {
+		return fmt.Errorf("cannot copy to file %s: %w", filepath, err)
+	}
+
+	return nil
+}

fleetshard/pkg/central/charts/charts_test.go

@@ -1,6 +1,7 @@
 package charts
 
 import (
+	"os"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -12,3 +13,15 @@ func TestTenantResourcesChart(t *testing.T) {
 	require.NoError(t, err)
 	assert.NotNil(t, c)
 }
+
+func TestDownloadTemplate(t *testing.T) {
+	crdURL := "https://raw.githubusercontent.com/stackrox/stackrox/master/operator/bundle/manifests/platform.stackrox.io_securedclusters.yaml"
+	err := DownloadTemplate(crdURL, "rhacs-operator")
+	require.NoError(t, err)
+	_, err = os.Stat("data/rhacs-operator/templates/platform.stackrox.io_securedclusters.yaml")
+	require.NoError(t, err)
+
+	c, err := GetChart("rhacs-operator")
+	require.NoError(t, err)
+	assert.NotNil(t, c)
+}