https://github.com/matrix-org/dendrite fork for cross-compile for ARM
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// Copyright 2020 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package setup
import (
"context"
"crypto/tls"
"fmt"
"io"
"net"
"net/http"
"net/url"
"os"
"os/signal"
"syscall"
"time"
"github.com/getsentry/sentry-go"
sentryhttp "github.com/getsentry/sentry-go/http"
"github.com/matrix-org/dendrite/internal/caching"
"github.com/matrix-org/dendrite/internal/httputil"
"github.com/matrix-org/gomatrixserverlib"
"github.com/prometheus/client_golang/prometheus/promhttp"
"go.uber.org/atomic"
"golang.org/x/net/http2"
"golang.org/x/net/http2/h2c"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/setup/process"
"github.com/matrix-org/dendrite/userapi/storage/accounts"
"github.com/gorilla/mux"
appserviceAPI "github.com/matrix-org/dendrite/appservice/api"
asinthttp "github.com/matrix-org/dendrite/appservice/inthttp"
eduServerAPI "github.com/matrix-org/dendrite/eduserver/api"
eduinthttp "github.com/matrix-org/dendrite/eduserver/inthttp"
federationSenderAPI "github.com/matrix-org/dendrite/federationsender/api"
fsinthttp "github.com/matrix-org/dendrite/federationsender/inthttp"
keyserverAPI "github.com/matrix-org/dendrite/keyserver/api"
keyinthttp "github.com/matrix-org/dendrite/keyserver/inthttp"
roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
rsinthttp "github.com/matrix-org/dendrite/roomserver/inthttp"
"github.com/matrix-org/dendrite/setup/config"
skapi "github.com/matrix-org/dendrite/signingkeyserver/api"
skinthttp "github.com/matrix-org/dendrite/signingkeyserver/inthttp"
userapi "github.com/matrix-org/dendrite/userapi/api"
userapiinthttp "github.com/matrix-org/dendrite/userapi/inthttp"
"github.com/sirupsen/logrus"
_ "net/http/pprof"
)
// BaseDendrite is a base for creating new instances of dendrite. It parses
// command line flags and config, and exposes methods for creating various
// resources. All errors are handled by logging then exiting, so all methods
// should only be used during start up.
// Must be closed when shutting down.
type BaseDendrite struct {
*process.ProcessContext
componentName string
tracerCloser io.Closer
PublicClientAPIMux *mux.Router
PublicFederationAPIMux *mux.Router
PublicKeyAPIMux *mux.Router
PublicMediaAPIMux *mux.Router
InternalAPIMux *mux.Router
UseHTTPAPIs bool
apiHttpClient *http.Client
httpClient *http.Client
Cfg *config.Dendrite
Caches *caching.Caches
DNSCache *gomatrixserverlib.DNSCache
// KafkaConsumer sarama.Consumer
// KafkaProducer sarama.SyncProducer
}
const HTTPServerTimeout = time.Minute * 5
const HTTPClientTimeout = time.Second * 30
const NoListener = ""
// NewBaseDendrite creates a new instance to be used by a component.
// The componentName is used for logging purposes, and should be a friendly name
// of the compontent running, e.g. "SyncAPI"
func NewBaseDendrite(cfg *config.Dendrite, componentName string, useHTTPAPIs bool) *BaseDendrite {
configErrors := &config.ConfigErrors{}
cfg.Verify(configErrors, componentName == "Monolith") // TODO: better way?
if len(*configErrors) > 0 {
for _, err := range *configErrors {
logrus.Errorf("Configuration error: %s", err)
}
logrus.Fatalf("Failed to start due to configuration errors")
}
internal.SetupStdLogging()
internal.SetupHookLogging(cfg.Logging, componentName)
internal.SetupPprof()
logrus.Infof("Dendrite version %s", internal.VersionString())
closer, err := cfg.SetupTracing("Dendrite" + componentName)
if err != nil {
logrus.WithError(err).Panicf("failed to start opentracing")
}
if cfg.Global.Sentry.Enabled {
logrus.Info("Setting up Sentry for debugging...")
err = sentry.Init(sentry.ClientOptions{
Dsn: cfg.Global.Sentry.DSN,
Environment: cfg.Global.Sentry.Environment,
Debug: true,
ServerName: string(cfg.Global.ServerName),
Release: "dendrite@" + internal.VersionString(),
AttachStacktrace: true,
})
if err != nil {
logrus.WithError(err).Panic("failed to start Sentry")
}
}
cache, err := caching.NewInMemoryLRUCache(true)
if err != nil {
logrus.WithError(err).Warnf("Failed to create cache")
}
var dnsCache *gomatrixserverlib.DNSCache
if cfg.Global.DNSCache.Enabled {
lifetime := time.Second * cfg.Global.DNSCache.CacheLifetime
dnsCache = gomatrixserverlib.NewDNSCache(
cfg.Global.DNSCache.CacheSize,
lifetime,
)
logrus.Infof(
"DNS cache enabled (size %d, lifetime %s)",
cfg.Global.DNSCache.CacheSize,
lifetime,
)
}
apiClient := http.Client{
Timeout: time.Minute * 10,
Transport: &http2.Transport{
AllowHTTP: true,
DialTLS: func(network, addr string, _ *tls.Config) (net.Conn, error) {
// Ordinarily HTTP/2 would expect TLS, but the remote listener is
// H2C-enabled (HTTP/2 without encryption). Overriding the DialTLS
// function with a plain Dial allows us to trick the HTTP client
// into establishing a HTTP/2 connection without TLS.
// TODO: Eventually we will want to look at authenticating and
// encrypting these internal HTTP APIs, at which point we will have
// to reconsider H2C and change all this anyway.
return net.Dial(network, addr)
},
},
}
client := http.Client{Timeout: HTTPClientTimeout}
if cfg.FederationSender.Proxy.Enabled {
client.Transport = &http.Transport{Proxy: http.ProxyURL(&url.URL{
Scheme: cfg.FederationSender.Proxy.Protocol,
Host: fmt.Sprintf("%s:%d", cfg.FederationSender.Proxy.Host, cfg.FederationSender.Proxy.Port),
})}
}
// Ideally we would only use SkipClean on routes which we know can allow '/' but due to
// https://github.com/gorilla/mux/issues/460 we have to attach this at the top router.
// When used in conjunction with UseEncodedPath() we get the behaviour we want when parsing
// path parameters:
// /foo/bar%2Fbaz == [foo, bar%2Fbaz] (from UseEncodedPath)
// /foo/bar%2F%2Fbaz == [foo, bar%2F%2Fbaz] (from SkipClean)
// In particular, rooms v3 event IDs are not urlsafe and can include '/' and because they
// are randomly generated it results in flakey tests.
// We need to be careful with media APIs if they read from a filesystem to make sure they
// are not inadvertently reading paths without cleaning, else this could introduce a
// directory traversal attack e.g /../../../etc/passwd
return &BaseDendrite{
ProcessContext: process.NewProcessContext(),
componentName: componentName,
UseHTTPAPIs: useHTTPAPIs,
tracerCloser: closer,
Cfg: cfg,
Caches: cache,
DNSCache: dnsCache,
PublicClientAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.PublicClientPathPrefix).Subrouter().UseEncodedPath(),
PublicFederationAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.PublicFederationPathPrefix).Subrouter().UseEncodedPath(),
PublicKeyAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.PublicKeyPathPrefix).Subrouter().UseEncodedPath(),
PublicMediaAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.PublicMediaPathPrefix).Subrouter().UseEncodedPath(),
InternalAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.InternalPathPrefix).Subrouter().UseEncodedPath(),
apiHttpClient: &apiClient,
httpClient: &client,
}
}
// Close implements io.Closer
func (b *BaseDendrite) Close() error {
return b.tracerCloser.Close()
}
// AppserviceHTTPClient returns the AppServiceQueryAPI for hitting the appservice component over HTTP.
func (b *BaseDendrite) AppserviceHTTPClient() appserviceAPI.AppServiceQueryAPI {
a, err := asinthttp.NewAppserviceClient(b.Cfg.AppServiceURL(), b.apiHttpClient)
if err != nil {
logrus.WithError(err).Panic("CreateHTTPAppServiceAPIs failed")
}
return a
}
// RoomserverHTTPClient returns RoomserverInternalAPI for hitting the roomserver over HTTP.
func (b *BaseDendrite) RoomserverHTTPClient() roomserverAPI.RoomserverInternalAPI {
rsAPI, err := rsinthttp.NewRoomserverClient(b.Cfg.RoomServerURL(), b.apiHttpClient, b.Caches)
if err != nil {
logrus.WithError(err).Panic("RoomserverHTTPClient failed", b.apiHttpClient)
}
return rsAPI
}
// UserAPIClient returns UserInternalAPI for hitting the userapi over HTTP.
func (b *BaseDendrite) UserAPIClient() userapi.UserInternalAPI {
userAPI, err := userapiinthttp.NewUserAPIClient(b.Cfg.UserAPIURL(), b.apiHttpClient)
if err != nil {
logrus.WithError(err).Panic("UserAPIClient failed", b.apiHttpClient)
}
return userAPI
}
// EDUServerClient returns EDUServerInputAPI for hitting the EDU server over HTTP
func (b *BaseDendrite) EDUServerClient() eduServerAPI.EDUServerInputAPI {
e, err := eduinthttp.NewEDUServerClient(b.Cfg.EDUServerURL(), b.apiHttpClient)
if err != nil {
logrus.WithError(err).Panic("EDUServerClient failed", b.apiHttpClient)
}
return e
}
// FederationSenderHTTPClient returns FederationSenderInternalAPI for hitting
// the federation sender over HTTP
func (b *BaseDendrite) FederationSenderHTTPClient() federationSenderAPI.FederationSenderInternalAPI {
f, err := fsinthttp.NewFederationSenderClient(b.Cfg.FederationSenderURL(), b.apiHttpClient)
if err != nil {
logrus.WithError(err).Panic("FederationSenderHTTPClient failed", b.apiHttpClient)
}
return f
}
// SigningKeyServerHTTPClient returns SigningKeyServer for hitting the signing key server over HTTP
func (b *BaseDendrite) SigningKeyServerHTTPClient() skapi.SigningKeyServerAPI {
f, err := skinthttp.NewSigningKeyServerClient(
b.Cfg.SigningKeyServerURL(),
b.apiHttpClient,
b.Caches,
)
if err != nil {
logrus.WithError(err).Panic("SigningKeyServerHTTPClient failed", b.httpClient)
}
return f
}
// KeyServerHTTPClient returns KeyInternalAPI for hitting the key server over HTTP
func (b *BaseDendrite) KeyServerHTTPClient() keyserverAPI.KeyInternalAPI {
f, err := keyinthttp.NewKeyServerClient(b.Cfg.KeyServerURL(), b.apiHttpClient)
if err != nil {
logrus.WithError(err).Panic("KeyServerHTTPClient failed", b.apiHttpClient)
}
return f
}
// CreateAccountsDB creates a new instance of the accounts database. Should only
// be called once per component.
func (b *BaseDendrite) CreateAccountsDB() accounts.Database {
db, err := accounts.NewDatabase(&b.Cfg.UserAPI.AccountDatabase, b.Cfg.Global.ServerName, b.Cfg.UserAPI.BCryptCost, b.Cfg.UserAPI.OpenIDTokenLifetimeMS)
if err != nil {
logrus.WithError(err).Panicf("failed to connect to accounts db")
}
return db
}
// CreateClient creates a new client (normally used for media fetch requests).
// Should only be called once per component.
func (b *BaseDendrite) CreateClient() *gomatrixserverlib.Client {
if b.Cfg.Global.DisableFederation {
return gomatrixserverlib.NewClient(
gomatrixserverlib.WithTransport(noOpHTTPTransport),
)
}
opts := []gomatrixserverlib.ClientOption{
gomatrixserverlib.WithSkipVerify(b.Cfg.FederationSender.DisableTLSValidation),
}
if b.Cfg.Global.DNSCache.Enabled {
opts = append(opts, gomatrixserverlib.WithDNSCache(b.DNSCache))
}
client := gomatrixserverlib.NewClient(opts...)
client.SetUserAgent(fmt.Sprintf("Dendrite/%s", internal.VersionString()))
return client
}
// CreateFederationClient creates a new federation client. Should only be called
// once per component.
func (b *BaseDendrite) CreateFederationClient() *gomatrixserverlib.FederationClient {
if b.Cfg.Global.DisableFederation {
return gomatrixserverlib.NewFederationClient(
b.Cfg.Global.ServerName, b.Cfg.Global.KeyID, b.Cfg.Global.PrivateKey,
gomatrixserverlib.WithTransport(noOpHTTPTransport),
)
}
opts := []gomatrixserverlib.ClientOption{
gomatrixserverlib.WithTimeout(time.Minute * 5),
gomatrixserverlib.WithSkipVerify(b.Cfg.FederationSender.DisableTLSValidation),
}
if b.Cfg.Global.DNSCache.Enabled {
opts = append(opts, gomatrixserverlib.WithDNSCache(b.DNSCache))
}
client := gomatrixserverlib.NewFederationClient(
b.Cfg.Global.ServerName, b.Cfg.Global.KeyID,
b.Cfg.Global.PrivateKey, opts...,
)
client.SetUserAgent(fmt.Sprintf("Dendrite/%s", internal.VersionString()))
return client
}
// SetupAndServeHTTP sets up the HTTP server to serve endpoints registered on
// ApiMux under /api/ and adds a prometheus handler under /metrics.
func (b *BaseDendrite) SetupAndServeHTTP(
internalHTTPAddr, externalHTTPAddr config.HTTPAddress,
certFile, keyFile *string,
) {
internalAddr, _ := internalHTTPAddr.Address()
externalAddr, _ := externalHTTPAddr.Address()
externalRouter := mux.NewRouter().SkipClean(true).UseEncodedPath()
internalRouter := externalRouter
externalServ := &http.Server{
Addr: string(externalAddr),
WriteTimeout: HTTPServerTimeout,
Handler: externalRouter,
}
internalServ := externalServ
if internalAddr != NoListener && externalAddr != internalAddr {
// H2C allows us to accept HTTP/2 connections without TLS
// encryption. Since we don't currently require any form of
// authentication or encryption on these internal HTTP APIs,
// H2C gives us all of the advantages of HTTP/2 (such as
// stream multiplexing and avoiding head-of-line blocking)
// without enabling TLS.
internalH2S := &http2.Server{}
internalRouter = mux.NewRouter().SkipClean(true).UseEncodedPath()
internalServ = &http.Server{
Addr: string(internalAddr),
Handler: h2c.NewHandler(internalRouter, internalH2S),
}
}
internalRouter.PathPrefix(httputil.InternalPathPrefix).Handler(b.InternalAPIMux)
if b.Cfg.Global.Metrics.Enabled {
internalRouter.Handle("/metrics", httputil.WrapHandlerInBasicAuth(promhttp.Handler(), b.Cfg.Global.Metrics.BasicAuth))
}
var clientHandler http.Handler
clientHandler = b.PublicClientAPIMux
if b.Cfg.Global.Sentry.Enabled {
sentryHandler := sentryhttp.New(sentryhttp.Options{
Repanic: true,
})
clientHandler = sentryHandler.Handle(b.PublicClientAPIMux)
}
var federationHandler http.Handler
federationHandler = b.PublicFederationAPIMux
if b.Cfg.Global.Sentry.Enabled {
sentryHandler := sentryhttp.New(sentryhttp.Options{
Repanic: true,
})
federationHandler = sentryHandler.Handle(b.PublicFederationAPIMux)
}
externalRouter.PathPrefix(httputil.PublicClientPathPrefix).Handler(clientHandler)
if !b.Cfg.Global.DisableFederation {
externalRouter.PathPrefix(httputil.PublicKeyPathPrefix).Handler(b.PublicKeyAPIMux)
externalRouter.PathPrefix(httputil.PublicFederationPathPrefix).Handler(federationHandler)
}
externalRouter.PathPrefix(httputil.PublicMediaPathPrefix).Handler(b.PublicMediaAPIMux)
if internalAddr != NoListener && internalAddr != externalAddr {
go func() {
var internalShutdown atomic.Bool // RegisterOnShutdown can be called more than once
logrus.Infof("Starting internal %s listener on %s", b.componentName, internalServ.Addr)
b.ProcessContext.ComponentStarted()
internalServ.RegisterOnShutdown(func() {
if internalShutdown.CAS(false, true) {
b.ProcessContext.ComponentFinished()
logrus.Infof("Stopped internal HTTP listener")
}
})
if certFile != nil && keyFile != nil {
if err := internalServ.ListenAndServeTLS(*certFile, *keyFile); err != nil {
if err != http.ErrServerClosed {
logrus.WithError(err).Fatal("failed to serve HTTPS")
}
}
} else {
if err := internalServ.ListenAndServe(); err != nil {
if err != http.ErrServerClosed {
logrus.WithError(err).Fatal("failed to serve HTTP")
}
}
}
logrus.Infof("Stopped internal %s listener on %s", b.componentName, internalServ.Addr)
}()
}
if externalAddr != NoListener {
go func() {
var externalShutdown atomic.Bool // RegisterOnShutdown can be called more than once
logrus.Infof("Starting external %s listener on %s", b.componentName, externalServ.Addr)
b.ProcessContext.ComponentStarted()
externalServ.RegisterOnShutdown(func() {
if externalShutdown.CAS(false, true) {
b.ProcessContext.ComponentFinished()
logrus.Infof("Stopped external HTTP listener")
}
})
if certFile != nil && keyFile != nil {
if err := externalServ.ListenAndServeTLS(*certFile, *keyFile); err != nil {
if err != http.ErrServerClosed {
logrus.WithError(err).Fatal("failed to serve HTTPS")
}
}
} else {
if err := externalServ.ListenAndServe(); err != nil {
if err != http.ErrServerClosed {
logrus.WithError(err).Fatal("failed to serve HTTP")
}
}
}
logrus.Infof("Stopped external %s listener on %s", b.componentName, externalServ.Addr)
}()
}
<-b.ProcessContext.WaitForShutdown()
ctx, cancel := context.WithCancel(context.Background())
cancel()
_ = internalServ.Shutdown(ctx)
_ = externalServ.Shutdown(ctx)
logrus.Infof("Stopped HTTP listeners")
}
func (b *BaseDendrite) WaitForShutdown() {
sigs := make(chan os.Signal, 1)
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
<-sigs
signal.Reset(syscall.SIGINT, syscall.SIGTERM)
logrus.Warnf("Shutdown signal received")
b.ProcessContext.ShutdownDendrite()
b.ProcessContext.WaitForComponentsToFinish()
if b.Cfg.Global.Sentry.Enabled {
if !sentry.Flush(time.Second * 5) {
logrus.Warnf("failed to flush all Sentry events!")
}
}
logrus.Warnf("Dendrite is exiting now")
}