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package main
import (
"flag"
"fmt"
"log"
"log/slog"
"os"
"os/exec"
"path/filepath"
"strings"
"github.com/TecharoHQ/anubis/internal"
"github.com/facebookgo/flagenv"
)
var (
dockerAnnotations = flag.String("docker-annotations", os.Getenv("DOCKER_METADATA_OUTPUT_ANNOTATIONS"), "Docker image annotations")
dockerLabels = flag.String("docker-labels", os.Getenv("DOCKER_METADATA_OUTPUT_LABELS"), "Docker image labels")
dockerRepo = flag.String("docker-repo", "registry.int.xeserv.us/techaro/anubis", "Docker image repository for Anubis")
dockerTags = flag.String("docker-tags", os.Getenv("DOCKER_METADATA_OUTPUT_TAGS"), "newline separated docker tags including the registry name")
githubEventName = flag.String("github-event-name", "", "GitHub event name")
pullRequestID = flag.Int("pull-request-id", -1, "GitHub pull request ID")
slogLevel = flag.String("slog-level", "INFO", "logging level (see https://pkg.go.dev/log/slog#hdr-Levels)")
)
func main() {
flagenv.Parse()
flag.Parse()
internal.InitSlog(*slogLevel)
koDockerRepo := strings.TrimSuffix(*dockerRepo, "/"+filepath.Base(*dockerRepo))
if *githubEventName == "pull_request" && *pullRequestID != -1 {
*dockerRepo = fmt.Sprintf("ttl.sh/techaro/pr-%d/anubis", *pullRequestID)
*dockerTags = fmt.Sprintf("ttl.sh/techaro/pr-%d/anubis:24h", *pullRequestID)
koDockerRepo = fmt.Sprintf("ttl.sh/techaro/pr-%d", *pullRequestID)
slog.Info(
"Building image for pull request",
"docker-repo", *dockerRepo,
"docker-tags", *dockerTags,
"github-event-name", *githubEventName,
"pull-request-id", *pullRequestID,
)
}
setOutput("docker_image", strings.SplitN(*dockerTags, "\n", 2)[0])
version, err := run("git describe --tags --always --dirty")
if err != nil {
log.Fatal(err)
}
commitTimestamp, err := run("git log -1 --format='%ct'")
if err != nil {
log.Fatal(err)
}
slog.Debug(
"ko env",
"KO_DOCKER_REPO", koDockerRepo,
"SOURCE_DATE_EPOCH", commitTimestamp,
"VERSION", version,
)
os.Setenv("KO_DOCKER_REPO", koDockerRepo)
os.Setenv("SOURCE_DATE_EPOCH", commitTimestamp)
os.Setenv("VERSION", version)
setOutput("version", version)
if *dockerTags == "" {
log.Fatal("Must set --docker-tags or DOCKER_METADATA_OUTPUT_TAGS")
}
images, err := parseImageList(*dockerTags)
if err != nil {
log.Fatalf("can't parse images: %v", err)
}
for _, img := range images {
if img.repository != *dockerRepo {
slog.Error(
"Something weird is going on. Wanted docker repo differs from contents of --docker-tags. Did a flag get set incorrectly?",
"wanted", *dockerRepo,
"got", img.repository,
"docker-tags", *dockerTags,
)
os.Exit(2)
}
}
var tags []string
for _, img := range images {
tags = append(tags, img.tag)
}
output, err := run(fmt.Sprintf("ko build --platform=all --base-import-paths --tags=%q --image-user=1000 --image-annotation=%q --image-label=%q ./cmd/anubis | tail -n1", strings.Join(tags, ","), *dockerAnnotations, *dockerLabels))
if err != nil {
log.Fatalf("can't run ko build, check stderr: %v", err)
}
sp := strings.SplitN(output, "@", 2)
setOutput("digest", sp[1])
}
type image struct {
repository string
tag string
}
func parseImageList(imageList string) ([]image, error) {
images := strings.Split(imageList, "\n")
var result []image
for _, img := range images {
if img == "" {
continue
}
// reg.xeiaso.net/techaro/anubis:latest
// repository: reg.xeiaso.net/techaro/anubis
// tag: latest
index := strings.LastIndex(img, ":")
result = append(result, image{
repository: img[:index],
tag: img[index+1:],
})
}
if len(result) == 0 {
return nil, fmt.Errorf("no images provided, bad flags")
}
return result, nil
}
// run executes a command and returns the trimmed output.
func run(command string) (string, error) {
bin, err := exec.LookPath("sh")
if err != nil {
return "", err
}
slog.Debug("running command", "command", command)
cmd := exec.Command(bin, "-c", command)
cmd.Stderr = os.Stderr
out, err := cmd.Output()
if err != nil {
return "", err
}
return strings.TrimSpace(string(out)), nil
}
func setOutput(key, val string) {
fmt.Printf("::set-output name=%s::%s\n", key, val)
}
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