listmonk/init.go

467 lines
14 KiB
Go

package main
import (
"encoding/json"
"fmt"
"html/template"
"os"
"path/filepath"
"strings"
"syscall"
"time"
"github.com/jmoiron/sqlx"
"github.com/jmoiron/sqlx/types"
"github.com/knadh/goyesql/v2"
goyesqlx "github.com/knadh/goyesql/v2/sqlx"
"github.com/knadh/koanf"
"github.com/knadh/koanf/maps"
"github.com/knadh/koanf/parsers/toml"
"github.com/knadh/koanf/providers/confmap"
"github.com/knadh/koanf/providers/file"
"github.com/knadh/koanf/providers/posflag"
"github.com/knadh/listmonk/internal/manager"
"github.com/knadh/listmonk/internal/media"
"github.com/knadh/listmonk/internal/media/providers/filesystem"
"github.com/knadh/listmonk/internal/media/providers/s3"
"github.com/knadh/listmonk/internal/messenger"
"github.com/knadh/listmonk/internal/subimporter"
"github.com/knadh/stuffbin"
"github.com/labstack/echo"
flag "github.com/spf13/pflag"
)
const (
queryFilePath = "queries.sql"
)
// constants contains static, constant config values required by the app.
type constants struct {
RootURL string `koanf:"root"`
LogoURL string `koanf:"logo_url"`
FaviconURL string `koanf:"favicon_url"`
FromEmail string `koanf:"from_email"`
NotifyEmails []string `koanf:"notify_emails"`
Privacy struct {
AllowBlacklist bool `koanf:"allow_blacklist"`
AllowExport bool `koanf:"allow_export"`
AllowWipe bool `koanf:"allow_wipe"`
Exportable map[string]bool `koanf:"-"`
} `koanf:"privacy"`
UnsubURL string
LinkTrackURL string
ViewTrackURL string
OptinURL string
MessageURL string
MediaProvider string
}
func initFlags() {
f := flag.NewFlagSet("config", flag.ContinueOnError)
f.Usage = func() {
// Register --help handler.
fmt.Println(f.FlagUsages())
os.Exit(0)
}
// Register the commandline flags.
f.StringSlice("config", []string{"config.toml"},
"path to one or more config files (will be merged in order)")
f.Bool("install", false, "run first time installation")
f.Bool("version", false, "current version of the build")
f.Bool("new-config", false, "generate sample config file")
f.String("static-dir", "", "(optional) path to directory with static files")
f.Bool("yes", false, "assume 'yes' to prompts, eg: during --install")
if err := f.Parse(os.Args[1:]); err != nil {
lo.Fatalf("error loading flags: %v", err)
}
if err := ko.Load(posflag.Provider(f, ".", ko), nil); err != nil {
lo.Fatalf("error loading config: %v", err)
}
}
// initConfigFiles loads the given config files into the koanf instance.
func initConfigFiles(files []string, ko *koanf.Koanf) {
for _, f := range files {
lo.Printf("reading config: %s", f)
if err := ko.Load(file.Provider(f), toml.Parser()); err != nil {
if os.IsNotExist(err) {
lo.Fatal("config file not found. If there isn't one yet, run --new-config to generate one.")
}
lo.Fatalf("error loadng config from file: %v.", err)
}
}
}
// initFileSystem initializes the stuffbin FileSystem to provide
// access to bunded static assets to the app.
func initFS(staticDir string) stuffbin.FileSystem {
// Get the executable's path.
path, err := os.Executable()
if err != nil {
lo.Fatalf("error getting executable path: %v", err)
}
// Load the static files stuffed in the binary.
fs, err := stuffbin.UnStuff(path)
if err != nil {
// Running in local mode. Load local assets into
// the in-memory stuffbin.FileSystem.
lo.Printf("unable to initialize embedded filesystem: %v", err)
lo.Printf("using local filesystem for static assets")
files := []string{
"config.toml.sample",
"queries.sql",
"schema.sql",
"static/email-templates",
// Alias /static/public to /public for the HTTP fileserver.
"static/public:/public",
// The frontend app's static assets are aliased to /frontend
// so that they are accessible at /frontend/js/* etc.
// Alias all files inside dist/ and dist/frontend to frontend/*.
"frontend/dist/:/frontend",
"frontend/dist/frontend:/frontend",
}
fs, err = stuffbin.NewLocalFS("/", files...)
if err != nil {
lo.Fatalf("failed to initialize local file for assets: %v", err)
}
}
// Optional static directory to override files.
if staticDir != "" {
lo.Printf("loading static files from: %v", staticDir)
fStatic, err := stuffbin.NewLocalFS("/", []string{
filepath.Join(staticDir, "/email-templates") + ":/static/email-templates",
// Alias /static/public to /public for the HTTP fileserver.
filepath.Join(staticDir, "/public") + ":/public",
}...)
if err != nil {
lo.Fatalf("failed reading static directory: %s: %v", staticDir, err)
}
if err := fs.Merge(fStatic); err != nil {
lo.Fatalf("error merging static directory: %s: %v", staticDir, err)
}
}
return fs
}
// initDB initializes the main DB connection pool and parse and loads the app's
// SQL queries into a prepared query map.
func initDB() *sqlx.DB {
var dbCfg dbConf
if err := ko.Unmarshal("db", &dbCfg); err != nil {
lo.Fatalf("error loading db config: %v", err)
}
lo.Printf("connecting to db: %s:%d/%s", dbCfg.Host, dbCfg.Port, dbCfg.DBName)
db, err := connectDB(dbCfg)
if err != nil {
lo.Fatalf("error connecting to DB: %v", err)
}
return db
}
// initQueries loads named SQL queries from the queries file and optionally
// prepares them.
func initQueries(sqlFile string, db *sqlx.DB, fs stuffbin.FileSystem, prepareQueries bool) (goyesql.Queries, *Queries) {
// Load SQL queries.
qB, err := fs.Read(sqlFile)
if err != nil {
lo.Fatalf("error reading SQL file %s: %v", sqlFile, err)
}
qMap, err := goyesql.ParseBytes(qB)
if err != nil {
lo.Fatalf("error parsing SQL queries: %v", err)
}
if !prepareQueries {
return qMap, nil
}
// Prepare queries.
var q Queries
if err := goyesqlx.ScanToStruct(&q, qMap, db.Unsafe()); err != nil {
lo.Fatalf("error preparing SQL queries: %v", err)
}
return qMap, &q
}
// initSettings loads settings from the DB.
func initSettings(q *Queries) {
var s types.JSONText
if err := q.GetSettings.Get(&s); err != nil {
lo.Fatalf("error reading settings from DB: %s", pqErrMsg(err))
}
// Setting keys are dot separated, eg: app.favicon_url. Unflatten them into
// nested maps {app: {favicon_url}}.
var out map[string]interface{}
if err := json.Unmarshal(s, &out); err != nil {
lo.Fatalf("error unmarshalling settings from DB: %v", err)
}
if err := ko.Load(confmap.Provider(out, "."), nil); err != nil {
lo.Fatalf("error parsing settings from DB: %v", err)
}
}
func initConstants() *constants {
// Read constants.
var c constants
if err := ko.Unmarshal("app", &c); err != nil {
lo.Fatalf("error loading app config: %v", err)
}
if err := ko.Unmarshal("privacy", &c.Privacy); err != nil {
lo.Fatalf("error loading app config: %v", err)
}
c.RootURL = strings.TrimRight(c.RootURL, "/")
c.Privacy.Exportable = maps.StringSliceToLookupMap(ko.Strings("privacy.exportable"))
c.MediaProvider = ko.String("upload.provider")
// Static URLS.
// url.com/subscription/{campaign_uuid}/{subscriber_uuid}
c.UnsubURL = fmt.Sprintf("%s/subscription/%%s/%%s", c.RootURL)
// url.com/subscription/optin/{subscriber_uuid}
c.OptinURL = fmt.Sprintf("%s/subscription/optin/%%s?%%s", c.RootURL)
// url.com/link/{campaign_uuid}/{subscriber_uuid}/{link_uuid}
c.LinkTrackURL = fmt.Sprintf("%s/link/%%s/%%s/%%s", c.RootURL)
// url.com/link/{campaign_uuid}/{subscriber_uuid}
c.MessageURL = fmt.Sprintf("%s/campaign/%%s/%%s", c.RootURL)
// url.com/campaign/{campaign_uuid}/{subscriber_uuid}/px.png
c.ViewTrackURL = fmt.Sprintf("%s/campaign/%%s/%%s/px.png", c.RootURL)
return &c
}
// initCampaignManager initializes the campaign manager.
func initCampaignManager(q *Queries, cs *constants, app *App) *manager.Manager {
campNotifCB := func(subject string, data interface{}) error {
return app.sendNotification(cs.NotifyEmails, subject, notifTplCampaign, data)
}
if ko.Int("app.concurrency") < 1 {
lo.Fatal("app.concurrency should be at least 1")
}
if ko.Int("app.message_rate") < 1 {
lo.Fatal("app.message_rate should be at least 1")
}
return manager.New(manager.Config{
BatchSize: ko.Int("app.batch_size"),
Concurrency: ko.Int("app.concurrency"),
MessageRate: ko.Int("app.message_rate"),
MaxSendErrors: ko.Int("app.max_send_errors"),
FromEmail: cs.FromEmail,
UnsubURL: cs.UnsubURL,
OptinURL: cs.OptinURL,
LinkTrackURL: cs.LinkTrackURL,
ViewTrackURL: cs.ViewTrackURL,
MessageURL: cs.MessageURL,
}, newManagerDB(q), campNotifCB, lo)
}
// initImporter initializes the bulk subscriber importer.
func initImporter(q *Queries, db *sqlx.DB, app *App) *subimporter.Importer {
return subimporter.New(
subimporter.Options{
UpsertStmt: q.UpsertSubscriber.Stmt,
BlacklistStmt: q.UpsertBlacklistSubscriber.Stmt,
UpdateListDateStmt: q.UpdateListsDate.Stmt,
NotifCB: func(subject string, data interface{}) error {
app.sendNotification(app.constants.NotifyEmails, subject, notifTplImport, data)
return nil
},
}, db.DB)
}
// initMessengers initializes various messenger backends.
func initMessengers(m *manager.Manager) messenger.Messenger {
var (
mapKeys = ko.MapKeys("smtp")
servers = make([]messenger.Server, 0, len(mapKeys))
)
items := ko.Slices("smtp")
if len(items) == 0 {
lo.Fatalf("no SMTP servers found in config")
}
// Load the default SMTP messengers.
for _, item := range items {
if !item.Bool("enabled") {
continue
}
// Read the SMTP config.
var s messenger.Server
if err := item.UnmarshalWithConf("", &s, koanf.UnmarshalConf{Tag: "json"}); err != nil {
lo.Fatalf("error loading SMTP: %v", err)
}
servers = append(servers, s)
lo.Printf("loaded SMTP: %s@%s", item.String("username"), item.String("host"))
}
if len(servers) == 0 {
lo.Fatalf("no SMTP servers enabled in settings")
}
// Initialize the default e-mail messenger.
msgr, err := messenger.NewEmailer(servers...)
if err != nil {
lo.Fatalf("error loading e-mail messenger: %v", err)
}
if err := m.AddMessenger(msgr); err != nil {
lo.Printf("error registering messenger %s", err)
}
return msgr
}
// initMediaStore initializes Upload manager with a custom backend.
func initMediaStore() media.Store {
switch provider := ko.String("upload.provider"); provider {
case "s3":
var o s3.Opts
ko.Unmarshal("upload.s3", &o)
up, err := s3.NewS3Store(o)
if err != nil {
lo.Fatalf("error initializing s3 upload provider %s", err)
}
lo.Println("media upload provider: s3")
return up
case "filesystem":
var o filesystem.Opts
ko.Unmarshal("upload.filesystem", &o)
o.RootURL = ko.String("app.root")
o.UploadPath = filepath.Clean(o.UploadPath)
o.UploadURI = filepath.Clean(o.UploadURI)
up, err := filesystem.NewDiskStore(o)
if err != nil {
lo.Fatalf("error initializing filesystem upload provider %s", err)
}
lo.Println("media upload provider: filesystem")
return up
default:
lo.Fatalf("unknown provider. select filesystem or s3")
}
return nil
}
// initNotifTemplates compiles and returns e-mail notification templates that are
// used for sending ad-hoc notifications to admins and subscribers.
func initNotifTemplates(path string, fs stuffbin.FileSystem, cs *constants) *template.Template {
// Register utility functions that the e-mail templates can use.
funcs := template.FuncMap{
"RootURL": func() string {
return cs.RootURL
},
"LogoURL": func() string {
return cs.LogoURL
}}
tpl, err := stuffbin.ParseTemplatesGlob(funcs, fs, "/static/email-templates/*.html")
if err != nil {
lo.Fatalf("error parsing e-mail notif templates: %v", err)
}
return tpl
}
// initHTTPServer sets up and runs the app's main HTTP server and blocks forever.
func initHTTPServer(app *App) *echo.Echo {
// Initialize the HTTP server.
var srv = echo.New()
srv.HideBanner = true
// Register app (*App) to be injected into all HTTP handlers.
srv.Use(func(next echo.HandlerFunc) echo.HandlerFunc {
return func(c echo.Context) error {
c.Set("app", app)
return next(c)
}
})
// Parse and load user facing templates.
tpl, err := stuffbin.ParseTemplatesGlob(nil, app.fs, "/public/templates/*.html")
if err != nil {
lo.Fatalf("error parsing public templates: %v", err)
}
srv.Renderer = &tplRenderer{
templates: tpl,
RootURL: app.constants.RootURL,
LogoURL: app.constants.LogoURL,
FaviconURL: app.constants.FaviconURL}
// Initialize the static file server.
fSrv := app.fs.FileServer()
srv.GET("/public/*", echo.WrapHandler(fSrv))
srv.GET("/frontend/*", echo.WrapHandler(fSrv))
if ko.String("upload.provider") == "filesystem" {
srv.Static(ko.String("upload.filesystem.upload_uri"),
ko.String("upload.filesystem.upload_path"))
}
// Register all HTTP handlers.
registerHTTPHandlers(srv)
// Start the server.
go func() {
if err := srv.Start(ko.String("app.address")); err != nil {
if strings.Contains(err.Error(), "Server closed") {
lo.Println("HTTP server shut down")
} else {
lo.Fatalf("error starting HTTP server: %v", err)
}
}
}()
return srv
}
func awaitReload(sigChan chan os.Signal, closerWait chan bool, closer func()) chan bool {
// The blocking signal handler that main() waits on.
out := make(chan bool)
// Respawn a new process and exit the running one.
respawn := func() {
if err := syscall.Exec(os.Args[0], os.Args, os.Environ()); err != nil {
lo.Fatalf("error spawning process: %v", err)
}
os.Exit(0)
}
// Listen for reload signal.
go func() {
for range sigChan {
lo.Println("reloading on signal ...")
go closer()
select {
case <-closerWait:
// Wait for the closer to finish.
respawn()
case <-time.After(time.Second * 3):
// Or timeout and force close.
respawn()
}
}
}()
return out
}