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serve.go
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serve.go
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package apis
import (
"context"
"crypto/tls"
"log"
"net"
"net/http"
"path/filepath"
"strings"
"time"
"github.com/fatih/color"
"github.com/labstack/echo/v5"
"github.com/labstack/echo/v5/middleware"
"github.com/pocketbase/dbx"
"github.com/pocketbase/pocketbase/core"
"github.com/pocketbase/pocketbase/migrations"
"github.com/pocketbase/pocketbase/migrations/logs"
"github.com/pocketbase/pocketbase/tools/list"
"github.com/pocketbase/pocketbase/tools/migrate"
"golang.org/x/crypto/acme"
"golang.org/x/crypto/acme/autocert"
)
// ServeConfig defines a configuration struct for apis.Serve().
type ServeConfig struct {
// ShowStartBanner indicates whether to show or hide the server start console message.
ShowStartBanner bool
// HttpAddr is the TCP address to listen for the HTTP server (eg. `127.0.0.1:80`).
HttpAddr string
// HttpsAddr is the TCP address to listen for the HTTPS server (eg. `127.0.0.1:443`).
HttpsAddr string
// Optional domains list to use when issuing the TLS certificate.
//
// If not set, the host from the bound server address will be used.
//
// For convenience, for each "non-www" domain a "www" entry and
// redirect will be automatically added.
CertificateDomains []string
// AllowedOrigins is an optional list of CORS origins (default to "*").
AllowedOrigins []string
}
// Serve starts a new app web server.
//
// NB! The app should be bootstrapped before starting the web server.
//
// Example:
//
// app.Bootstrap()
// apis.Serve(app, apis.ServeConfig{
// HttpAddr: "127.0.0.1:8080",
// ShowStartBanner: false,
// })
func Serve(app core.App, config ServeConfig) (*http.Server, error) {
if len(config.AllowedOrigins) == 0 {
config.AllowedOrigins = []string{"*"}
}
// ensure that the latest migrations are applied before starting the server
if err := runMigrations(app); err != nil {
return nil, err
}
// reload app settings in case a new default value was set with a migration
// (or if this is the first time the init migration was executed)
if err := app.RefreshSettings(); err != nil {
color.Yellow("=====================================")
color.Yellow("WARNING: Settings load error! \n%v", err)
color.Yellow("Fallback to the application defaults.")
color.Yellow("=====================================")
}
router, err := InitApi(app)
if err != nil {
return nil, err
}
// configure cors
router.Use(middleware.CORSWithConfig(middleware.CORSConfig{
Skipper: middleware.DefaultSkipper,
AllowOrigins: config.AllowedOrigins,
AllowMethods: []string{http.MethodGet, http.MethodHead, http.MethodPut, http.MethodPatch, http.MethodPost, http.MethodDelete},
}))
// start http server
// ---
mainAddr := config.HttpAddr
if config.HttpsAddr != "" {
mainAddr = config.HttpsAddr
}
var wwwRedirects []string
// extract the host names for the certificate host policy
hostNames := config.CertificateDomains
if len(hostNames) == 0 {
host, _, _ := net.SplitHostPort(mainAddr)
hostNames = append(hostNames, host)
}
for _, host := range hostNames {
if strings.HasPrefix(host, "www.") {
continue // explicitly set www host
}
wwwHost := "www." + host
if !list.ExistInSlice(wwwHost, hostNames) {
hostNames = append(hostNames, wwwHost)
wwwRedirects = append(wwwRedirects, wwwHost)
}
}
// implicit www->non-www redirect(s)
if len(wwwRedirects) > 0 {
router.Pre(func(next echo.HandlerFunc) echo.HandlerFunc {
return func(c echo.Context) error {
host := c.Request().Host
if strings.HasPrefix(host, "www.") && list.ExistInSlice(host, wwwRedirects) {
return c.Redirect(
http.StatusTemporaryRedirect,
(c.Scheme() + "://" + host[4:] + c.Request().RequestURI),
)
}
return next(c)
}
})
}
certManager := &autocert.Manager{
Prompt: autocert.AcceptTOS,
Cache: autocert.DirCache(filepath.Join(app.DataDir(), ".autocert_cache")),
HostPolicy: autocert.HostWhitelist(hostNames...),
}
server := &http.Server{
TLSConfig: &tls.Config{
MinVersion: tls.VersionTLS12,
GetCertificate: certManager.GetCertificate,
NextProtos: []string{acme.ALPNProto},
},
ReadTimeout: 10 * time.Minute,
ReadHeaderTimeout: 30 * time.Second,
// WriteTimeout: 60 * time.Second, // breaks sse!
Handler: router,
Addr: mainAddr,
}
serveEvent := &core.ServeEvent{
App: app,
Router: router,
Server: server,
CertManager: certManager,
}
if err := app.OnBeforeServe().Trigger(serveEvent); err != nil {
return nil, err
}
if config.ShowStartBanner {
schema := "http"
addr := server.Addr
if config.HttpsAddr != "" {
schema = "https"
if len(config.CertificateDomains) > 0 {
addr = config.CertificateDomains[0]
}
}
date := new(strings.Builder)
log.New(date, "", log.LstdFlags).Print()
bold := color.New(color.Bold).Add(color.FgGreen)
bold.Printf(
"%s Server started at %s\n",
strings.TrimSpace(date.String()),
color.CyanString("%s://%s", schema, addr),
)
regular := color.New()
regular.Printf("├─ REST API: %s\n", color.CyanString("%s://%s/api/", schema, addr))
regular.Printf("└─ Admin UI: %s\n", color.CyanString("%s://%s/_/", schema, addr))
}
// try to gracefully shutdown the server on app termination
app.OnTerminate().Add(func(e *core.TerminateEvent) error {
ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
defer cancel()
server.Shutdown(ctx)
return nil
})
// start HTTPS server
if config.HttpsAddr != "" {
// if httpAddr is set, start an HTTP server to redirect the traffic to the HTTPS version
if config.HttpAddr != "" {
go http.ListenAndServe(config.HttpAddr, certManager.HTTPHandler(nil))
}
return server, server.ListenAndServeTLS("", "")
}
// OR start HTTP server
return server, server.ListenAndServe()
}
type migrationsConnection struct {
DB *dbx.DB
MigrationsList migrate.MigrationsList
}
func runMigrations(app core.App) error {
connections := []migrationsConnection{
{
DB: app.DB(),
MigrationsList: migrations.AppMigrations,
},
{
DB: app.LogsDB(),
MigrationsList: logs.LogsMigrations,
},
}
for _, c := range connections {
runner, err := migrate.NewRunner(c.DB, c.MigrationsList)
if err != nil {
return err
}
if _, err := runner.Up(); err != nil {
return err
}
}
return nil
}