mirror of
https://github.com/matrix-org/dendrite
synced 2024-12-17 00:13:42 +01:00
542 lines
20 KiB
Go
542 lines
20 KiB
Go
// Copyright 2020 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package base
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import (
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"context"
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"crypto/tls"
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"database/sql"
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"fmt"
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"io"
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"net"
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"net/http"
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_ "net/http/pprof"
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"os"
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"os/signal"
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"syscall"
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"time"
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"github.com/getsentry/sentry-go"
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sentryhttp "github.com/getsentry/sentry-go/http"
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"github.com/matrix-org/dendrite/internal/caching"
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"github.com/matrix-org/dendrite/internal/httputil"
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"github.com/matrix-org/dendrite/internal/pushgateway"
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"github.com/matrix-org/dendrite/internal/sqlutil"
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"github.com/matrix-org/gomatrixserverlib"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"go.uber.org/atomic"
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"golang.org/x/net/http2"
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"golang.org/x/net/http2/h2c"
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"github.com/matrix-org/dendrite/internal"
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"github.com/matrix-org/dendrite/setup/jetstream"
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"github.com/matrix-org/dendrite/setup/process"
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"github.com/gorilla/mux"
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"github.com/kardianos/minwinsvc"
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appserviceAPI "github.com/matrix-org/dendrite/appservice/api"
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asinthttp "github.com/matrix-org/dendrite/appservice/inthttp"
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federationAPI "github.com/matrix-org/dendrite/federationapi/api"
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federationIntHTTP "github.com/matrix-org/dendrite/federationapi/inthttp"
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keyserverAPI "github.com/matrix-org/dendrite/keyserver/api"
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keyinthttp "github.com/matrix-org/dendrite/keyserver/inthttp"
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roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
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rsinthttp "github.com/matrix-org/dendrite/roomserver/inthttp"
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"github.com/matrix-org/dendrite/setup/config"
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userapi "github.com/matrix-org/dendrite/userapi/api"
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userapiinthttp "github.com/matrix-org/dendrite/userapi/inthttp"
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"github.com/sirupsen/logrus"
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)
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// BaseDendrite is a base for creating new instances of dendrite. It parses
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// command line flags and config, and exposes methods for creating various
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// resources. All errors are handled by logging then exiting, so all methods
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// should only be used during start up.
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// Must be closed when shutting down.
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type BaseDendrite struct {
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*process.ProcessContext
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componentName string
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tracerCloser io.Closer
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PublicClientAPIMux *mux.Router
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PublicFederationAPIMux *mux.Router
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PublicKeyAPIMux *mux.Router
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PublicMediaAPIMux *mux.Router
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PublicWellKnownAPIMux *mux.Router
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InternalAPIMux *mux.Router
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DendriteAdminMux *mux.Router
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SynapseAdminMux *mux.Router
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NATS *jetstream.NATSInstance
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UseHTTPAPIs bool
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apiHttpClient *http.Client
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Cfg *config.Dendrite
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Caches *caching.Caches
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DNSCache *gomatrixserverlib.DNSCache
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Database *sql.DB
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DatabaseWriter sqlutil.Writer
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}
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const NoListener = ""
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const HTTPServerTimeout = time.Minute * 5
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const HTTPClientTimeout = time.Second * 30
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type BaseDendriteOptions int
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const (
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NoCacheMetrics BaseDendriteOptions = iota
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UseHTTPAPIs
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PolylithMode
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)
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// NewBaseDendrite creates a new instance to be used by a component.
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// The componentName is used for logging purposes, and should be a friendly name
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// of the compontent running, e.g. "SyncAPI"
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func NewBaseDendrite(cfg *config.Dendrite, componentName string, options ...BaseDendriteOptions) *BaseDendrite {
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platformSanityChecks()
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useHTTPAPIs := false
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cacheMetrics := true
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isMonolith := true
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for _, opt := range options {
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switch opt {
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case NoCacheMetrics:
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cacheMetrics = false
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case UseHTTPAPIs:
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useHTTPAPIs = true
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case PolylithMode:
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isMonolith = false
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useHTTPAPIs = true
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}
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}
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configErrors := &config.ConfigErrors{}
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cfg.Verify(configErrors, isMonolith)
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if len(*configErrors) > 0 {
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for _, err := range *configErrors {
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logrus.Errorf("Configuration error: %s", err)
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}
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logrus.Fatalf("Failed to start due to configuration errors")
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}
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internal.SetupStdLogging()
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internal.SetupHookLogging(cfg.Logging, componentName)
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internal.SetupPprof()
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logrus.Infof("Dendrite version %s", internal.VersionString())
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if !cfg.ClientAPI.RegistrationDisabled && cfg.ClientAPI.OpenRegistrationWithoutVerificationEnabled {
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logrus.Warn("Open registration is enabled")
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}
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closer, err := cfg.SetupTracing("Dendrite" + componentName)
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if err != nil {
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logrus.WithError(err).Panicf("failed to start opentracing")
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}
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if cfg.Global.Sentry.Enabled {
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logrus.Info("Setting up Sentry for debugging...")
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err = sentry.Init(sentry.ClientOptions{
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Dsn: cfg.Global.Sentry.DSN,
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Environment: cfg.Global.Sentry.Environment,
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Debug: true,
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ServerName: string(cfg.Global.ServerName),
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Release: "dendrite@" + internal.VersionString(),
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AttachStacktrace: true,
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})
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if err != nil {
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logrus.WithError(err).Panic("failed to start Sentry")
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}
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}
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cache, err := caching.NewInMemoryLRUCache(cacheMetrics)
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if err != nil {
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logrus.WithError(err).Warnf("Failed to create cache")
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}
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var dnsCache *gomatrixserverlib.DNSCache
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if cfg.Global.DNSCache.Enabled {
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dnsCache = gomatrixserverlib.NewDNSCache(
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cfg.Global.DNSCache.CacheSize,
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cfg.Global.DNSCache.CacheLifetime,
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)
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logrus.Infof(
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"DNS cache enabled (size %d, lifetime %s)",
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cfg.Global.DNSCache.CacheSize,
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cfg.Global.DNSCache.CacheLifetime,
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)
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}
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apiClient := http.Client{
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Timeout: time.Minute * 10,
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Transport: &http2.Transport{
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AllowHTTP: true,
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DialTLS: func(network, addr string, _ *tls.Config) (net.Conn, error) {
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// Ordinarily HTTP/2 would expect TLS, but the remote listener is
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// H2C-enabled (HTTP/2 without encryption). Overriding the DialTLS
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// function with a plain Dial allows us to trick the HTTP client
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// into establishing a HTTP/2 connection without TLS.
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// TODO: Eventually we will want to look at authenticating and
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// encrypting these internal HTTP APIs, at which point we will have
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// to reconsider H2C and change all this anyway.
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return net.Dial(network, addr)
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},
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},
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}
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// If we're in monolith mode, we'll set up a global pool of database
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// connections. A component is welcome to use this pool if they don't
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// have a separate database config of their own.
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var db *sql.DB
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var writer sqlutil.Writer
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if cfg.Global.DatabaseOptions.ConnectionString != "" {
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if !isMonolith {
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logrus.Panic("Using a global database connection pool is not supported in polylith deployments")
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}
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if cfg.Global.DatabaseOptions.ConnectionString.IsSQLite() {
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logrus.Panic("Using a global database connection pool is not supported with SQLite databases")
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}
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writer = sqlutil.NewDummyWriter()
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if db, err = sqlutil.Open(&cfg.Global.DatabaseOptions, writer); err != nil {
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logrus.WithError(err).Panic("Failed to set up global database connections")
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}
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logrus.Debug("Using global database connection pool")
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}
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// Ideally we would only use SkipClean on routes which we know can allow '/' but due to
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// https://github.com/gorilla/mux/issues/460 we have to attach this at the top router.
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// When used in conjunction with UseEncodedPath() we get the behaviour we want when parsing
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// path parameters:
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// /foo/bar%2Fbaz == [foo, bar%2Fbaz] (from UseEncodedPath)
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// /foo/bar%2F%2Fbaz == [foo, bar%2F%2Fbaz] (from SkipClean)
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// In particular, rooms v3 event IDs are not urlsafe and can include '/' and because they
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// are randomly generated it results in flakey tests.
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// We need to be careful with media APIs if they read from a filesystem to make sure they
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// are not inadvertently reading paths without cleaning, else this could introduce a
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// directory traversal attack e.g /../../../etc/passwd
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return &BaseDendrite{
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ProcessContext: process.NewProcessContext(),
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componentName: componentName,
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UseHTTPAPIs: useHTTPAPIs,
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tracerCloser: closer,
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Cfg: cfg,
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Caches: cache,
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DNSCache: dnsCache,
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PublicClientAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.PublicClientPathPrefix).Subrouter().UseEncodedPath(),
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PublicFederationAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.PublicFederationPathPrefix).Subrouter().UseEncodedPath(),
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PublicKeyAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.PublicKeyPathPrefix).Subrouter().UseEncodedPath(),
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PublicMediaAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.PublicMediaPathPrefix).Subrouter().UseEncodedPath(),
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PublicWellKnownAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.PublicWellKnownPrefix).Subrouter().UseEncodedPath(),
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InternalAPIMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.InternalPathPrefix).Subrouter().UseEncodedPath(),
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DendriteAdminMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.DendriteAdminPathPrefix).Subrouter().UseEncodedPath(),
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SynapseAdminMux: mux.NewRouter().SkipClean(true).PathPrefix(httputil.SynapseAdminPathPrefix).Subrouter().UseEncodedPath(),
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NATS: &jetstream.NATSInstance{},
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apiHttpClient: &apiClient,
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Database: db, // set if monolith with global connection pool only
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DatabaseWriter: writer, // set if monolith with global connection pool only
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}
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}
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// Close implements io.Closer
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func (b *BaseDendrite) Close() error {
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return b.tracerCloser.Close()
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}
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// DatabaseConnection assists in setting up a database connection. It accepts
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// the database properties and a new writer for the given component. If we're
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// running in monolith mode with a global connection pool configured then we
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// will return that connection, along with the global writer, effectively
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// ignoring the options provided. Otherwise we'll open a new database connection
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// using the supplied options and writer. Note that it's possible for the pointer
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// receiver to be nil here – that's deliberate as some of the unit tests don't
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// have a BaseDendrite and just want a connection with the supplied config
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// without any pooling stuff.
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func (b *BaseDendrite) DatabaseConnection(dbProperties *config.DatabaseOptions, writer sqlutil.Writer) (*sql.DB, sqlutil.Writer, error) {
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if dbProperties.ConnectionString != "" || b == nil {
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// Open a new database connection using the supplied config.
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db, err := sqlutil.Open(dbProperties, writer)
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return db, writer, err
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}
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if b.Database != nil && b.DatabaseWriter != nil {
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// Ignore the supplied config and return the global pool and
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// writer.
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return b.Database, b.DatabaseWriter, nil
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}
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return nil, nil, fmt.Errorf("no database connections configured")
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}
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// AppserviceHTTPClient returns the AppServiceInternalAPI for hitting the appservice component over HTTP.
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func (b *BaseDendrite) AppserviceHTTPClient() appserviceAPI.AppServiceInternalAPI {
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a, err := asinthttp.NewAppserviceClient(b.Cfg.AppServiceURL(), b.apiHttpClient)
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if err != nil {
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logrus.WithError(err).Panic("CreateHTTPAppServiceAPIs failed")
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}
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return a
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}
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// RoomserverHTTPClient returns RoomserverInternalAPI for hitting the roomserver over HTTP.
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func (b *BaseDendrite) RoomserverHTTPClient() roomserverAPI.RoomserverInternalAPI {
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rsAPI, err := rsinthttp.NewRoomserverClient(b.Cfg.RoomServerURL(), b.apiHttpClient, b.Caches)
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if err != nil {
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logrus.WithError(err).Panic("RoomserverHTTPClient failed", b.apiHttpClient)
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}
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return rsAPI
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}
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// UserAPIClient returns UserInternalAPI for hitting the userapi over HTTP.
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func (b *BaseDendrite) UserAPIClient() userapi.UserInternalAPI {
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userAPI, err := userapiinthttp.NewUserAPIClient(b.Cfg.UserAPIURL(), b.apiHttpClient)
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if err != nil {
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logrus.WithError(err).Panic("UserAPIClient failed", b.apiHttpClient)
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}
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return userAPI
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}
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// FederationAPIHTTPClient returns FederationInternalAPI for hitting
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// the federation API server over HTTP
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func (b *BaseDendrite) FederationAPIHTTPClient() federationAPI.FederationInternalAPI {
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f, err := federationIntHTTP.NewFederationAPIClient(b.Cfg.FederationAPIURL(), b.apiHttpClient, b.Caches)
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if err != nil {
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logrus.WithError(err).Panic("FederationAPIHTTPClient failed", b.apiHttpClient)
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}
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return f
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}
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// KeyServerHTTPClient returns KeyInternalAPI for hitting the key server over HTTP
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func (b *BaseDendrite) KeyServerHTTPClient() keyserverAPI.KeyInternalAPI {
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f, err := keyinthttp.NewKeyServerClient(b.Cfg.KeyServerURL(), b.apiHttpClient)
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if err != nil {
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logrus.WithError(err).Panic("KeyServerHTTPClient failed", b.apiHttpClient)
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}
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return f
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}
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// PushGatewayHTTPClient returns a new client for interacting with (external) Push Gateways.
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func (b *BaseDendrite) PushGatewayHTTPClient() pushgateway.Client {
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return pushgateway.NewHTTPClient(b.Cfg.UserAPI.PushGatewayDisableTLSValidation)
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}
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// CreateClient creates a new client (normally used for media fetch requests).
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// Should only be called once per component.
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func (b *BaseDendrite) CreateClient() *gomatrixserverlib.Client {
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if b.Cfg.Global.DisableFederation {
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return gomatrixserverlib.NewClient(
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gomatrixserverlib.WithTransport(noOpHTTPTransport),
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)
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}
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opts := []gomatrixserverlib.ClientOption{
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gomatrixserverlib.WithSkipVerify(b.Cfg.FederationAPI.DisableTLSValidation),
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gomatrixserverlib.WithWellKnownSRVLookups(true),
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}
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if b.Cfg.Global.DNSCache.Enabled {
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opts = append(opts, gomatrixserverlib.WithDNSCache(b.DNSCache))
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}
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client := gomatrixserverlib.NewClient(opts...)
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client.SetUserAgent(fmt.Sprintf("Dendrite/%s", internal.VersionString()))
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return client
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}
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// CreateFederationClient creates a new federation client. Should only be called
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// once per component.
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func (b *BaseDendrite) CreateFederationClient() *gomatrixserverlib.FederationClient {
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if b.Cfg.Global.DisableFederation {
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return gomatrixserverlib.NewFederationClient(
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b.Cfg.Global.ServerName, b.Cfg.Global.KeyID, b.Cfg.Global.PrivateKey,
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gomatrixserverlib.WithTransport(noOpHTTPTransport),
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)
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}
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opts := []gomatrixserverlib.ClientOption{
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gomatrixserverlib.WithTimeout(time.Minute * 5),
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gomatrixserverlib.WithSkipVerify(b.Cfg.FederationAPI.DisableTLSValidation),
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}
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if b.Cfg.Global.DNSCache.Enabled {
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opts = append(opts, gomatrixserverlib.WithDNSCache(b.DNSCache))
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}
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client := gomatrixserverlib.NewFederationClient(
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b.Cfg.Global.ServerName, b.Cfg.Global.KeyID,
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b.Cfg.Global.PrivateKey, opts...,
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)
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client.SetUserAgent(fmt.Sprintf("Dendrite/%s", internal.VersionString()))
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return client
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}
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// SetupAndServeHTTP sets up the HTTP server to serve endpoints registered on
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// ApiMux under /api/ and adds a prometheus handler under /metrics.
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func (b *BaseDendrite) SetupAndServeHTTP(
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internalHTTPAddr, externalHTTPAddr config.HTTPAddress,
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certFile, keyFile *string,
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) {
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internalAddr, _ := internalHTTPAddr.Address()
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externalAddr, _ := externalHTTPAddr.Address()
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externalRouter := mux.NewRouter().SkipClean(true).UseEncodedPath()
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internalRouter := externalRouter
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externalServ := &http.Server{
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Addr: string(externalAddr),
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WriteTimeout: HTTPServerTimeout,
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Handler: externalRouter,
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BaseContext: func(_ net.Listener) context.Context {
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return b.ProcessContext.Context()
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},
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}
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internalServ := externalServ
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if internalAddr != NoListener && externalAddr != internalAddr {
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// H2C allows us to accept HTTP/2 connections without TLS
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// encryption. Since we don't currently require any form of
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// authentication or encryption on these internal HTTP APIs,
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// H2C gives us all of the advantages of HTTP/2 (such as
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// stream multiplexing and avoiding head-of-line blocking)
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// without enabling TLS.
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internalH2S := &http2.Server{}
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internalRouter = mux.NewRouter().SkipClean(true).UseEncodedPath()
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internalServ = &http.Server{
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Addr: string(internalAddr),
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Handler: h2c.NewHandler(internalRouter, internalH2S),
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BaseContext: func(_ net.Listener) context.Context {
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return b.ProcessContext.Context()
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},
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}
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}
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internalRouter.PathPrefix(httputil.InternalPathPrefix).Handler(b.InternalAPIMux)
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if b.Cfg.Global.Metrics.Enabled {
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internalRouter.Handle("/metrics", httputil.WrapHandlerInBasicAuth(promhttp.Handler(), b.Cfg.Global.Metrics.BasicAuth))
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}
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b.DendriteAdminMux.HandleFunc("/monitor/up", func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(200)
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})
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b.DendriteAdminMux.HandleFunc("/monitor/health", func(w http.ResponseWriter, r *http.Request) {
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if b.ProcessContext.IsDegraded() {
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w.WriteHeader(503)
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return
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}
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w.WriteHeader(200)
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})
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var clientHandler http.Handler
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clientHandler = b.PublicClientAPIMux
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if b.Cfg.Global.Sentry.Enabled {
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sentryHandler := sentryhttp.New(sentryhttp.Options{
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Repanic: true,
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})
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clientHandler = sentryHandler.Handle(b.PublicClientAPIMux)
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}
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var federationHandler http.Handler
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federationHandler = b.PublicFederationAPIMux
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if b.Cfg.Global.Sentry.Enabled {
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sentryHandler := sentryhttp.New(sentryhttp.Options{
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Repanic: true,
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})
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federationHandler = sentryHandler.Handle(b.PublicFederationAPIMux)
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}
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internalRouter.PathPrefix(httputil.DendriteAdminPathPrefix).Handler(b.DendriteAdminMux)
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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.SynapseAdminPathPrefix).Handler(b.SynapseAdminMux)
|
||
externalRouter.PathPrefix(httputil.PublicMediaPathPrefix).Handler(b.PublicMediaAPIMux)
|
||
externalRouter.PathPrefix(httputil.PublicWellKnownPrefix).Handler(b.PublicWellKnownAPIMux)
|
||
|
||
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)
|
||
}()
|
||
}
|
||
|
||
minwinsvc.SetOnExit(b.ProcessContext.ShutdownDendrite)
|
||
<-b.ProcessContext.WaitForShutdown()
|
||
|
||
logrus.Infof("Stopping HTTP listeners")
|
||
_ = internalServ.Shutdown(context.Background())
|
||
_ = externalServ.Shutdown(context.Background())
|
||
logrus.Infof("Stopped HTTP listeners")
|
||
}
|
||
|
||
func (b *BaseDendrite) WaitForShutdown() {
|
||
sigs := make(chan os.Signal, 1)
|
||
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
|
||
select {
|
||
case <-sigs:
|
||
case <-b.ProcessContext.WaitForShutdown():
|
||
}
|
||
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")
|
||
}
|