forked from drkelf/rell
/
main.go
199 lines (188 loc) · 5.73 KB
/
main.go
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// Command rell implements the main webserver application for Rell.
package main
import (
"flag"
"fmt"
"go/build"
"log"
"net/http"
"os"
"path/filepath"
"runtime"
"time"
"github.com/daaku/rell/adminweb"
"github.com/daaku/rell/examples"
"github.com/daaku/rell/examples/viewexamples"
"github.com/daaku/rell/internal/github.com/daaku/go.browserid"
"github.com/daaku/rell/internal/github.com/daaku/go.static"
"github.com/daaku/rell/internal/github.com/daaku/go.trustforward"
"github.com/daaku/rell/internal/github.com/daaku/go.xsrf"
"github.com/daaku/rell/internal/github.com/facebookgo/devrestarter"
"github.com/daaku/rell/internal/github.com/facebookgo/fbapi"
"github.com/daaku/rell/internal/github.com/facebookgo/fbapp"
"github.com/daaku/rell/internal/github.com/facebookgo/flagenv"
"github.com/daaku/rell/internal/github.com/facebookgo/httpcontrol"
"github.com/daaku/rell/internal/github.com/facebookgo/httpdown"
"github.com/daaku/rell/internal/github.com/facebookgo/parse"
"github.com/daaku/rell/internal/github.com/golang/groupcache/lru"
"github.com/daaku/rell/oauth"
"github.com/daaku/rell/og"
"github.com/daaku/rell/og/viewog"
"github.com/daaku/rell/rellenv"
"github.com/daaku/rell/rellenv/appns"
"github.com/daaku/rell/rellenv/empcheck"
"github.com/daaku/rell/rellenv/viewcontext"
"github.com/daaku/rell/web"
)
func defaultAddr() string {
if port := os.Getenv("PORT"); port != "" {
return ":" + port
}
return ":43600"
}
func pkgDir(path string) string {
pkg, err := build.Import(path, "", build.FindOnly)
if err != nil {
return ""
}
return pkg.Dir
}
func main() {
const signedRequestMaxAge = time.Hour * 24
runtime.GOMAXPROCS(runtime.NumCPU())
flagSet := flag.NewFlagSet(filepath.Base(os.Args[0]), flag.ExitOnError)
dev := flagSet.Bool("dev", runtime.GOOS != "linux", "development mode")
addr := flagSet.String("addr", defaultAddr(), "server address to bind to")
adminPath := flagSet.String("admin-path", "", "secret admin path")
facebookAppID := flagSet.Uint64("fb-app-id", 342526215814610, "facebook application id")
facebookAppSecret := flagSet.String("fb-app-secret", "", "facebook application secret")
facebookAppNS := flagSet.String("fb-app-ns", "", "facebook application namespace")
empCheckerAppID := flagSet.Uint64("empcheck-app-id", 0, "empcheck application id")
empCheckerAppSecret := flagSet.String("empcheck-app-secret", "", "empcheck application secret")
parseAppID := flagSet.String("parse-app-id", "", "parse application id")
parseMasterKey := flagSet.String("parse-master-key", "", "parse master key")
publicDir := flagSet.String(
"public-dir", pkgDir("github.com/daaku/rell/public"), "public files directory")
examplesDir := flagSet.String(
"examples-dir", pkgDir("github.com/daaku/rell/examples/db"), "example files directory")
flagSet.Parse(os.Args[1:])
if err := flagenv.ParseSet("RELL_", flagSet); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(2)
}
if *dev {
devrestarter.Init()
}
logger := log.New(os.Stderr, "", log.LstdFlags)
// for systemd started servers we can skip the date/time since journald
// already shows it
if os.Getppid() == 1 {
logger.SetFlags(0)
}
fbApp := fbapp.New(
*facebookAppID,
*facebookAppSecret,
*facebookAppNS,
)
forwarded := &trustforward.Forwarded{
X: true,
CloudFlare: true,
}
bid := &browserid.Cookie{
Name: "z",
MaxAge: time.Hour * 24 * 365 * 10, // 10 years
Length: 16,
Logger: logger,
Forwarded: forwarded,
}
xsrf := &xsrf.Provider{
BrowserID: bid,
MaxAge: time.Hour * 24,
SumLen: 10,
}
publicFS := http.Dir(*publicDir)
static := &static.Handler{
Path: "/static/",
Box: static.FileSystemBox(publicFS),
}
httpTransport := &httpcontrol.Transport{
MaxIdleConnsPerHost: http.DefaultMaxIdleConnsPerHost,
DialTimeout: 2 * time.Second,
ResponseHeaderTimeout: 3 * time.Second,
RequestTimeout: 30 * time.Second,
}
parseClient := &parse.Client{
Transport: httpTransport,
Credentials: parse.MasterKey{
ApplicationID: *parseAppID,
MasterKey: *parseMasterKey,
},
}
fbApiClient := &fbapi.Client{
Redact: true,
Transport: httpTransport,
}
lruCache := lru.New(10000)
empChecker := &empcheck.Checker{
FbApiClient: fbApiClient,
App: fbapp.New(*empCheckerAppID, *empCheckerAppSecret, ""),
Logger: logger,
Cache: lruCache,
}
appNSFetcher := &appns.Fetcher{
Apps: []fbapp.App{fbApp},
FbApiClient: fbApiClient,
Logger: logger,
Cache: lruCache,
}
exampleStore := &examples.Store{
Parse: parseClient,
DB: examples.MustMakeDB(*examplesDir),
Cache: lruCache,
}
webHandler := &web.Handler{
Static: static,
App: fbApp,
Logger: logger,
EnvParser: &rellenv.Parser{
App: fbApp,
EmpChecker: empChecker,
AppNSFetcher: appNSFetcher,
SignedRequestMaxAge: signedRequestMaxAge,
Forwarded: forwarded,
},
PublicFS: publicFS,
ContextHandler: &viewcontext.Handler{},
ExamplesHandler: &viewexamples.Handler{
ExampleStore: exampleStore,
Xsrf: xsrf,
Static: static,
},
OgHandler: &viewog.Handler{
Static: static,
ObjectParser: &og.Parser{Static: static},
},
OauthHandler: &oauth.Handler{
BrowserID: bid,
App: fbApp,
HttpTransport: httpTransport,
Static: static,
},
AdminHandler: &adminweb.Handler{
Forwarded: forwarded,
Path: *adminPath,
SkipHTTPS: *dev,
},
SignedRequestMaxAge: signedRequestMaxAge,
}
httpServer := &http.Server{
Addr: *addr,
Handler: webHandler,
}
hdConfig := &httpdown.HTTP{
StopTimeout: 9 * time.Second, // heroku provides 10 seconds to terminate
}
if err := httpdown.ListenAndServe(httpServer, hdConfig); err != nil {
logger.Fatal(err)
}
}