gitea-runner-operator/test/utils/utils.go

/*
Copyright 2026 bapung.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

package utils

import (
	"bufio"
	"bytes"
	"fmt"
	"os"
	"os/exec"
	"strings"

	. "github.com/onsi/ginkgo/v2" // nolint:revive,staticcheck
)

const (
	prometheusOperatorVersion = "v0.77.1"
	prometheusOperatorURL     = "https://github.com/prometheus-operator/prometheus-operator/" +
		"releases/download/%s/bundle.yaml"

	certmanagerVersion = "v1.16.3"
	certmanagerURLTmpl = "https://github.com/cert-manager/cert-manager/releases/download/%s/cert-manager.yaml"
)

func warnError(err error) {
	_, _ = fmt.Fprintf(GinkgoWriter, "warning: %v\n", err)
}

// Run executes the provided command within this context
func Run(cmd *exec.Cmd) (string, error) {
	dir, _ := GetProjectDir()
	cmd.Dir = dir

	if err := os.Chdir(cmd.Dir); err != nil {
		_, _ = fmt.Fprintf(GinkgoWriter, "chdir dir: %q\n", err)
	}

	cmd.Env = append(os.Environ(), "GO111MODULE=on")
	command := strings.Join(cmd.Args, " ")
	_, _ = fmt.Fprintf(GinkgoWriter, "running: %q\n", command)
	output, err := cmd.CombinedOutput()
	if err != nil {
		return string(output), fmt.Errorf("%q failed with error %q: %w", command, string(output), err)
	}

	return string(output), nil
}

// InstallPrometheusOperator installs the prometheus Operator to be used to export the enabled metrics.
func InstallPrometheusOperator() error {
	url := fmt.Sprintf(prometheusOperatorURL, prometheusOperatorVersion)
	cmd := exec.Command("kubectl", "create", "-f", url)
	_, err := Run(cmd)
	return err
}

// UninstallPrometheusOperator uninstalls the prometheus
func UninstallPrometheusOperator() {
	url := fmt.Sprintf(prometheusOperatorURL, prometheusOperatorVersion)
	cmd := exec.Command("kubectl", "delete", "-f", url)
	if _, err := Run(cmd); err != nil {
		warnError(err)
	}
}

// IsPrometheusCRDsInstalled checks if any Prometheus CRDs are installed
// by verifying the existence of key CRDs related to Prometheus.
func IsPrometheusCRDsInstalled() bool {
	// List of common Prometheus CRDs
	prometheusCRDs := []string{
		"prometheuses.monitoring.coreos.com",
		"prometheusrules.monitoring.coreos.com",
		"prometheusagents.monitoring.coreos.com",
	}

	cmd := exec.Command("kubectl", "get", "crds", "-o", "custom-columns=NAME:.metadata.name")
	output, err := Run(cmd)
	if err != nil {
		return false
	}
	crdList := GetNonEmptyLines(output)
	for _, crd := range prometheusCRDs {
		for _, line := range crdList {
			if strings.Contains(line, crd) {
				return true
			}
		}
	}

	return false
}

// UninstallCertManager uninstalls the cert manager
func UninstallCertManager() {
	url := fmt.Sprintf(certmanagerURLTmpl, certmanagerVersion)
	cmd := exec.Command("kubectl", "delete", "-f", url)
	if _, err := Run(cmd); err != nil {
		warnError(err)
	}
}

// InstallCertManager installs the cert manager bundle.
func InstallCertManager() error {
	url := fmt.Sprintf(certmanagerURLTmpl, certmanagerVersion)
	cmd := exec.Command("kubectl", "apply", "-f", url)
	if _, err := Run(cmd); err != nil {
		return err
	}
	// Wait for cert-manager-webhook to be ready, which can take time if cert-manager
	// was re-installed after uninstalling on a cluster.
	cmd = exec.Command("kubectl", "wait", "deployment.apps/cert-manager-webhook",
		"--for", "condition=Available",
		"--namespace", "cert-manager",
		"--timeout", "5m",
	)

	_, err := Run(cmd)
	return err
}

// IsCertManagerCRDsInstalled checks if any Cert Manager CRDs are installed
// by verifying the existence of key CRDs related to Cert Manager.
func IsCertManagerCRDsInstalled() bool {
	// List of common Cert Manager CRDs
	certManagerCRDs := []string{
		"certificates.cert-manager.io",
		"issuers.cert-manager.io",
		"clusterissuers.cert-manager.io",
		"certificaterequests.cert-manager.io",
		"orders.acme.cert-manager.io",
		"challenges.acme.cert-manager.io",
	}

	// Execute the kubectl command to get all CRDs
	cmd := exec.Command("kubectl", "get", "crds")
	output, err := Run(cmd)
	if err != nil {
		return false
	}

	// Check if any of the Cert Manager CRDs are present
	crdList := GetNonEmptyLines(output)
	for _, crd := range certManagerCRDs {
		for _, line := range crdList {
			if strings.Contains(line, crd) {
				return true
			}
		}
	}

	return false
}

// LoadImageToKindClusterWithName loads a local docker image to the kind cluster
func LoadImageToKindClusterWithName(name string) error {
	cluster := "kind"
	if v, ok := os.LookupEnv("KIND_CLUSTER"); ok {
		cluster = v
	}
	kindOptions := []string{"load", "docker-image", name, "--name", cluster}
	cmd := exec.Command("kind", kindOptions...)
	_, err := Run(cmd)
	return err
}

// GetNonEmptyLines converts given command output string into individual objects
// according to line breakers, and ignores the empty elements in it.
func GetNonEmptyLines(output string) []string {
	var res []string
	elements := strings.Split(output, "\n")
	for _, element := range elements {
		if element != "" {
			res = append(res, element)
		}
	}

	return res
}

// GetProjectDir will return the directory where the project is
func GetProjectDir() (string, error) {
	wd, err := os.Getwd()
	if err != nil {
		return wd, fmt.Errorf("failed to get current working directory: %w", err)
	}
	wd = strings.ReplaceAll(wd, "/test/e2e", "")
	return wd, nil
}

// UncommentCode searches for target in the file and remove the comment prefix
// of the target content. The target content may span multiple lines.
func UncommentCode(filename, target, prefix string) error {
	// false positive
	// nolint:gosec
	content, err := os.ReadFile(filename)
	if err != nil {
		return fmt.Errorf("failed to read file %q: %w", filename, err)
	}
	strContent := string(content)

	idx := strings.Index(strContent, target)
	if idx < 0 {
		return fmt.Errorf("unable to find the code %q to be uncomment", target)
	}

	out := new(bytes.Buffer)
	_, err = out.Write(content[:idx])
	if err != nil {
		return fmt.Errorf("failed to write to output: %w", err)
	}

	scanner := bufio.NewScanner(bytes.NewBufferString(target))
	if !scanner.Scan() {
		return nil
	}
	for {
		if _, err = out.WriteString(strings.TrimPrefix(scanner.Text(), prefix)); err != nil {
			return fmt.Errorf("failed to write to output: %w", err)
		}
		// Avoid writing a newline in case the previous line was the last in target.
		if !scanner.Scan() {
			break
		}
		if _, err = out.WriteString("\n"); err != nil {
			return fmt.Errorf("failed to write to output: %w", err)
		}
	}

	if _, err = out.Write(content[idx+len(target):]); err != nil {
		return fmt.Errorf("failed to write to output: %w", err)
	}

	// false positive
	// nolint:gosec
	if err = os.WriteFile(filename, out.Bytes(), 0644); err != nil {
		return fmt.Errorf("failed to write file %q: %w", filename, err)
	}

	return nil
}