/
main.go
273 lines (245 loc) · 7.24 KB
/
main.go
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package main
import (
"context"
"embed"
"flag"
"io/fs"
"log/slog"
"net/http"
"os"
"os/signal"
"strings"
"syscall"
"time"
"github.com/go-jose/go-jose/v3"
"github.com/mattn/go-colorable"
"github.com/mitchellh/mapstructure"
"github.com/spf13/viper"
"github.com/topi314/chroma/v2/formatters"
"github.com/topi314/chroma/v2/formatters/html"
"github.com/topi314/chroma/v2/lexers"
"github.com/topi314/chroma/v2/styles"
"github.com/topi314/gobin/v2/gobin"
"github.com/topi314/gobin/v2/gobin/database"
"github.com/topi314/tint"
meternoop "go.opentelemetry.io/otel/metric/noop"
tracenoop "go.opentelemetry.io/otel/trace/noop"
)
//go:generate go run github.com/a-h/templ/cmd/templ@latest generate
// These variables are set via the -ldflags option in go build
var (
Name = "gobin"
Namespace = "github.com/topi314/gobin/v2"
Version = "unknown"
Commit = "unknown"
BuildTime = "unknown"
)
var (
//go:embed assets
Assets embed.FS
//go:embed sql/schema.sql
Schema string
//go:embed styles
Styles embed.FS
)
func main() {
cfgPath := flag.String("config", "", "path to gobin.json")
flag.Parse()
viper.SetDefault("log_level", "info")
viper.SetDefault("log_format", "json")
viper.SetDefault("log_add_source", false)
viper.SetDefault("listen_addr", ":80")
viper.SetDefault("debug", false)
viper.SetDefault("dev_mode", false)
viper.SetDefault("database_type", "sqlite")
viper.SetDefault("database_debug", false)
viper.SetDefault("database_expire_after", "0")
viper.SetDefault("database_cleanup_interval", "1m")
viper.SetDefault("database_path", "gobin.db")
viper.SetDefault("database_host", "localhost")
viper.SetDefault("database_port", 5432)
viper.SetDefault("database_username", "gobin")
viper.SetDefault("database_database", "gobin")
viper.SetDefault("database_ssl_mode", "disable")
viper.SetDefault("max_document_size", 0)
viper.SetDefault("default_style", "onedark")
if *cfgPath != "" {
viper.SetConfigFile(*cfgPath)
} else {
viper.SetConfigName("gobin")
viper.SetConfigType("json")
viper.AddConfigPath(".")
viper.AddConfigPath("/etc/gobin/")
}
if err := viper.ReadInConfig(); err != nil {
slog.Error("Error while reading config", tint.Err(err))
os.Exit(1)
}
viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
viper.SetEnvPrefix("gobin")
viper.AutomaticEnv()
var cfg gobin.Config
if err := viper.Unmarshal(&cfg, func(config *mapstructure.DecoderConfig) {
config.TagName = "cfg"
}); err != nil {
slog.Error("Error while unmarshalling config", tint.Err(err))
os.Exit(1)
}
setupLogger(cfg.Log)
buildTime, _ := time.Parse(time.RFC3339, BuildTime)
slog.Info("Starting Gobin...", slog.String("version", Version), slog.String("commit", Commit), slog.Time("build-time", buildTime))
slog.Info("Config", slog.String("config", cfg.String()))
var (
tracer = tracenoop.NewTracerProvider().Tracer(Name)
meter = meternoop.NewMeterProvider().Meter(Name)
err error
)
if cfg.Otel != nil {
tracer, err = newTracer(*cfg.Otel)
if err != nil {
slog.Error("Error while creating tracer", tint.Err(err))
os.Exit(1)
}
meter, err = newMeter(*cfg.Otel)
if err != nil {
slog.Error("Error while creating meter", tint.Err(err))
os.Exit(1)
}
}
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
db, err := database.New(ctx, cfg.Database, Schema)
if err != nil {
slog.Error("Error while connecting to database", tint.Err(err))
os.Exit(1)
}
defer db.Close()
signer, err := jose.NewSigner(jose.SigningKey{
Algorithm: jose.HS512,
Key: []byte(cfg.JWTSecret),
}, nil)
if err != nil {
slog.Error("Error while creating signer", tint.Err(err))
os.Exit(1)
}
var assets http.FileSystem
if cfg.DevMode {
slog.Info("Development mode enabled")
assets = http.Dir(".")
} else {
assets = http.FS(Assets)
}
loadEmbeddedStyles()
loadLocalStyles(cfg.CustomStyles)
styles.Fallback = styles.Get(cfg.DefaultStyle)
lexers.Fallback = lexers.Get("plaintext")
htmlFormatter := html.New(
html.WithClasses(true),
html.ClassPrefix("ch-"),
html.Standalone(false),
html.InlineCode(false),
html.WithNopPreWrapper(),
html.WithLineNumbers(true),
html.WithLinkableLineNumbers(true, "L"),
html.TabWidth(4),
)
standaloneHTMLFormatter := html.New(
html.Standalone(true),
html.WithLineNumbers(true),
html.WithLinkableLineNumbers(true, "L"),
html.TabWidth(4),
)
formatters.Register("html", htmlFormatter)
formatters.Register("html-standalone", standaloneHTMLFormatter)
s := gobin.NewServer(gobin.FormatBuildVersion(Version, Commit, buildTime), cfg.DevMode, cfg, db, signer, tracer, meter, assets, htmlFormatter, standaloneHTMLFormatter)
slog.Info("Gobin started...", slog.String("address", cfg.ListenAddr))
go s.Start()
defer s.Close()
si := make(chan os.Signal, 1)
signal.Notify(si, syscall.SIGINT, syscall.SIGTERM, os.Interrupt)
<-si
}
const (
ansiFaint = "\033[2m"
ansiWhiteBold = "\033[37;1m"
ansiYellowBold = "\033[33;1m"
ansiCyanBold = "\033[36;1m"
ansiCyanBoldFaint = "\033[36;1;2m"
ansiRedFaint = "\033[31;2m"
ansiRedBold = "\033[31;1m"
ansiRed = "\033[31m"
ansiYellow = "\033[33m"
ansiGreen = "\033[32m"
ansiMagenta = "\033[35m"
)
func setupLogger(cfg gobin.LogConfig) {
var handler slog.Handler
switch cfg.Format {
case "json":
handler = slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
AddSource: cfg.AddSource,
Level: cfg.Level,
})
case "text":
handler = tint.NewHandler(colorable.NewColorable(os.Stdout), &tint.Options{
AddSource: cfg.AddSource,
Level: cfg.Level,
NoColor: cfg.NoColor,
LevelColors: map[slog.Level]string{
slog.LevelDebug: ansiMagenta,
slog.LevelInfo: ansiGreen,
slog.LevelWarn: ansiYellow,
slog.LevelError: ansiRed,
},
Colors: map[tint.Kind]string{
tint.KindTime: ansiYellowBold,
tint.KindSourceFile: ansiCyanBold,
tint.KindSourceSeparator: ansiCyanBoldFaint,
tint.KindSourceLine: ansiCyanBold,
tint.KindMessage: ansiWhiteBold,
tint.KindKey: ansiFaint,
tint.KindSeparator: ansiFaint,
tint.KindValue: ansiWhiteBold,
tint.KindErrorKey: ansiRedFaint,
tint.KindErrorSeparator: ansiFaint,
tint.KindErrorValue: ansiRedBold,
},
})
default:
slog.Error("Unknown log format", slog.String("format", cfg.Format))
os.Exit(-1)
}
slog.SetDefault(slog.New(handler))
}
func loadEmbeddedStyles() {
slog.Info("Loading embedded styles")
stylesSub, err := fs.Sub(Styles, "styles")
if err != nil {
slog.Error("Failed to get sub fs for embedded styles", tint.Err(err))
return
}
cStyles, err := styles.LoadFromFS(stylesSub)
if err != nil {
slog.Error("Failed to load embedded styles", tint.Err(err))
return
}
for _, style := range cStyles {
slog.Debug("Loaded embedded style", slog.String("name", style.Name))
styles.Register(style)
}
}
func loadLocalStyles(stylesDir string) {
if stylesDir == "" {
return
}
slog.Info("Loading local styles", slog.String("dir", stylesDir))
cStyles, err := styles.LoadFromFS(os.DirFS(stylesDir))
if err != nil {
slog.Error("Failed to load local styles", tint.Err(err))
return
}
for _, style := range cStyles {
slog.Debug("Loaded local style", slog.String("name", style.Name))
styles.Register(style)
}
}