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main.go
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package main
import (
"crypto/tls"
"fmt"
"html/template"
"io/ioutil"
stdlog "log"
"log/syslog"
"net"
"net/http"
pprof_http "net/http/pprof"
"os"
"path/filepath"
"runtime"
"runtime/pprof"
"strconv"
"strings"
"sync"
"time"
newrelic "github.com/newrelic/go-agent"
"github.com/TykTechnologies/tyk/checkup"
"github.com/Sirupsen/logrus"
"github.com/Sirupsen/logrus/hooks/syslog"
logstashHook "github.com/bshuster-repo/logrus-logstash-hook"
"github.com/evalphobia/logrus_sentry"
"github.com/facebookgo/pidfile"
graylogHook "github.com/gemnasium/logrus-graylog-hook"
"github.com/gorilla/mux"
"github.com/justinas/alice"
"github.com/lonelycode/osin"
gas "github.com/netbrain/goautosocket"
"github.com/rs/cors"
uuid "github.com/satori/go.uuid"
"rsc.io/letsencrypt"
"github.com/TykTechnologies/goagain"
"github.com/TykTechnologies/gorpc"
"github.com/TykTechnologies/tyk/apidef"
"github.com/TykTechnologies/tyk/certs"
"github.com/TykTechnologies/tyk/cli"
"github.com/TykTechnologies/tyk/config"
"github.com/TykTechnologies/tyk/dnscache"
logger "github.com/TykTechnologies/tyk/log"
"github.com/TykTechnologies/tyk/regexp"
"github.com/TykTechnologies/tyk/rpc"
"github.com/TykTechnologies/tyk/storage"
"github.com/TykTechnologies/tyk/user"
)
var (
log = logger.Get()
mainLog = log.WithField("prefix", "main")
pubSubLog = log.WithField("prefix", "pub-sub")
rawLog = logger.GetRaw()
templates *template.Template
analytics RedisAnalyticsHandler
GlobalEventsJSVM JSVM
memProfFile *os.File
MainNotifier RedisNotifier
DefaultOrgStore DefaultSessionManager
DefaultQuotaStore DefaultSessionManager
FallbackKeySesionManager = SessionHandler(&DefaultSessionManager{})
MonitoringHandler config.TykEventHandler
RPCListener RPCStorageHandler
DashService DashboardServiceSender
CertificateManager *certs.CertificateManager
NewRelicApplication newrelic.Application
apisMu sync.RWMutex
apiSpecs []*APISpec
apisByID = map[string]*APISpec{}
keyGen DefaultKeyGenerator
policiesMu sync.RWMutex
policiesByID = map[string]user.Policy{}
mainRouter *mux.Router
controlRouter *mux.Router
LE_MANAGER letsencrypt.Manager
LE_FIRSTRUN bool
NodeID string
runningTests = false
// confPaths is the series of paths to try to use as config files. The
// first one to exist will be used. If none exists, a default config
// will be written to the first path in the list.
//
// When --conf=foo is used, this will be replaced by []string{"foo"}.
confPaths = []string{
"tyk.conf",
// TODO: add ~/.config/tyk/tyk.conf here?
"/etc/tyk/tyk.conf",
}
dnsCacheManager dnscache.IDnsCacheManager
)
const (
defReadTimeout = 120 * time.Second
defWriteTimeout = 120 * time.Second
)
func getApiSpec(apiID string) *APISpec {
apisMu.RLock()
spec := apisByID[apiID]
apisMu.RUnlock()
return spec
}
func apisByIDLen() int {
apisMu.RLock()
defer apisMu.RUnlock()
return len(apisByID)
}
var redisPurgeOnce sync.Once
var rpcPurgeOnce sync.Once
var purgeTicker = time.Tick(time.Second)
var rpcPurgeTicker = time.Tick(10 * time.Second)
// Create all globals and init connection handlers
func setupGlobals() {
reloadMu.Lock()
defer reloadMu.Unlock()
dnsCacheManager = dnscache.NewDnsCacheManager(config.Global().DnsCache.MultipleIPsHandleStrategy)
if config.Global().DnsCache.Enabled {
dnsCacheManager.InitDNSCaching(
time.Duration(config.Global().DnsCache.TTL)*time.Second,
time.Duration(config.Global().DnsCache.CheckInterval)*time.Second)
}
mainRouter = mux.NewRouter()
controlRouter = mux.NewRouter()
if config.Global().EnableAnalytics && config.Global().Storage.Type != "redis" {
mainLog.Fatal("Analytics requires Redis Storage backend, please enable Redis in the tyk.conf file.")
}
// Initialise our Host Checker
healthCheckStore := storage.RedisCluster{KeyPrefix: "host-checker:"}
InitHostCheckManager(&healthCheckStore)
if config.Global().EnableAnalytics && analytics.Store == nil {
globalConf := config.Global()
globalConf.LoadIgnoredIPs()
config.SetGlobal(globalConf)
mainLog.Debug("Setting up analytics DB connection")
analyticsStore := storage.RedisCluster{KeyPrefix: "analytics-"}
analytics.Store = &analyticsStore
analytics.Init(globalConf)
redisPurgeOnce.Do(func() {
store := storage.RedisCluster{KeyPrefix: "analytics-"}
redisPurger := RedisPurger{Store: &store}
go redisPurger.PurgeLoop(purgeTicker)
})
if config.Global().AnalyticsConfig.Type == "rpc" {
mainLog.Debug("Using RPC cache purge")
rpcPurgeOnce.Do(func() {
store := storage.RedisCluster{KeyPrefix: "analytics-"}
purger := rpc.Purger{
Store: &store,
}
purger.Connect()
go purger.PurgeLoop(rpcPurgeTicker)
})
}
}
// Load all the files that have the "error" prefix.
templatesDir := filepath.Join(config.Global().TemplatePath, "error*")
templates = template.Must(template.ParseGlob(templatesDir))
if config.Global().CoProcessOptions.EnableCoProcess {
if err := CoProcessInit(); err != nil {
log.WithField("prefix", "coprocess").Error(err)
}
}
// Get the notifier ready
mainLog.Debug("Notifier will not work in hybrid mode")
mainNotifierStore := &storage.RedisCluster{}
mainNotifierStore.Connect()
MainNotifier = RedisNotifier{mainNotifierStore, RedisPubSubChannel}
if config.Global().Monitor.EnableTriggerMonitors {
h := &WebHookHandler{}
if err := h.Init(config.Global().Monitor.Config); err != nil {
mainLog.Error("Failed to initialise monitor! ", err)
} else {
MonitoringHandler = h
}
}
if globalConfig := config.Global(); globalConfig.AnalyticsConfig.NormaliseUrls.Enabled {
mainLog.Info("Setting up analytics normaliser")
globalConfig.AnalyticsConfig.NormaliseUrls.CompiledPatternSet = initNormalisationPatterns()
config.SetGlobal(globalConfig)
}
certificateSecret := config.Global().Secret
if config.Global().Security.PrivateCertificateEncodingSecret != "" {
certificateSecret = config.Global().Security.PrivateCertificateEncodingSecret
}
CertificateManager = certs.NewCertificateManager(getGlobalStorageHandler("cert-", false), certificateSecret, log)
if config.Global().NewRelic.AppName != "" {
NewRelicApplication = SetupNewRelic()
}
}
func buildConnStr(resource string) string {
if config.Global().DBAppConfOptions.ConnectionString == "" && config.Global().DisableDashboardZeroConf {
mainLog.Fatal("Connection string is empty, failing.")
}
if !config.Global().DisableDashboardZeroConf && config.Global().DBAppConfOptions.ConnectionString == "" {
mainLog.Info("Waiting for zeroconf signal...")
for config.Global().DBAppConfOptions.ConnectionString == "" {
time.Sleep(1 * time.Second)
}
}
return config.Global().DBAppConfOptions.ConnectionString + resource
}
func syncAPISpecs() (int, error) {
loader := APIDefinitionLoader{}
apisMu.Lock()
defer apisMu.Unlock()
if config.Global().UseDBAppConfigs {
connStr := buildConnStr("/system/apis")
tmpSpecs, err := loader.FromDashboardService(connStr, config.Global().NodeSecret)
if err != nil {
log.Error("failed to load API specs: ", err)
return 0, err
}
apiSpecs = tmpSpecs
mainLog.Debug("Downloading API Configurations from Dashboard Service")
} else if config.Global().SlaveOptions.UseRPC {
mainLog.Debug("Using RPC Configuration")
var err error
apiSpecs, err = loader.FromRPC(config.Global().SlaveOptions.RPCKey)
if err != nil {
return 0, err
}
} else {
apiSpecs = loader.FromDir(config.Global().AppPath)
}
mainLog.Printf("Detected %v APIs", len(apiSpecs))
if config.Global().AuthOverride.ForceAuthProvider {
for i := range apiSpecs {
apiSpecs[i].AuthProvider = config.Global().AuthOverride.AuthProvider
}
}
if config.Global().AuthOverride.ForceSessionProvider {
for i := range apiSpecs {
apiSpecs[i].SessionProvider = config.Global().AuthOverride.SessionProvider
}
}
return len(apiSpecs), nil
}
func syncPolicies() (count int, err error) {
var pols map[string]user.Policy
mainLog.Info("Loading policies")
switch config.Global().Policies.PolicySource {
case "service":
if config.Global().Policies.PolicyConnectionString == "" {
mainLog.Fatal("No connection string or node ID present. Failing.")
}
connStr := config.Global().Policies.PolicyConnectionString
connStr = connStr + "/system/policies"
mainLog.Info("Using Policies from Dashboard Service")
pols = LoadPoliciesFromDashboard(connStr, config.Global().NodeSecret, config.Global().Policies.AllowExplicitPolicyID)
case "rpc":
mainLog.Debug("Using Policies from RPC")
pols, err = LoadPoliciesFromRPC(config.Global().SlaveOptions.RPCKey)
default:
// this is the only case now where we need a policy record name
if config.Global().Policies.PolicyRecordName == "" {
mainLog.Debug("No policy record name defined, skipping...")
return 0, nil
}
pols = LoadPoliciesFromFile(config.Global().Policies.PolicyRecordName)
}
mainLog.Infof("Policies found (%d total):", len(pols))
for id := range pols {
mainLog.Infof(" - %s", id)
}
policiesMu.Lock()
defer policiesMu.Unlock()
if len(pols) > 0 {
policiesByID = pols
}
return len(pols), err
}
// stripSlashes removes any trailing slashes from the request's URL
// path.
func stripSlashes(next http.Handler) http.Handler {
fn := func(w http.ResponseWriter, r *http.Request) {
path := r.URL.Path
if trim := strings.TrimRight(path, "/"); trim != path {
r2 := *r
r2.URL.Path = trim
r = &r2
}
next.ServeHTTP(w, r)
}
return http.HandlerFunc(fn)
}
func controlAPICheckClientCertificate(certLevel string, next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if config.Global().Security.ControlAPIUseMutualTLS {
if err := CertificateManager.ValidateRequestCertificate(config.Global().Security.Certificates.ControlAPI, r); err != nil {
doJSONWrite(w, http.StatusForbidden, apiError(err.Error()))
return
}
}
next.ServeHTTP(w, r)
})
}
// Set up default Tyk control API endpoints - these are global, so need to be added first
func loadAPIEndpoints(muxer *mux.Router) {
hostname := config.Global().HostName
if config.Global().ControlAPIHostname != "" {
hostname = config.Global().ControlAPIHostname
}
r := mux.NewRouter()
muxer.PathPrefix("/tyk/").Handler(http.StripPrefix("/tyk",
stripSlashes(checkIsAPIOwner(controlAPICheckClientCertificate("/gateway/client", InstrumentationMW(r)))),
))
if hostname != "" {
muxer = muxer.Host(hostname).Subrouter()
mainLog.Info("Control API hostname set: ", hostname)
}
if *cli.HTTPProfile {
muxer.HandleFunc("/debug/pprof/profile", pprof_http.Profile)
muxer.HandleFunc("/debug/pprof/{_:.*}", pprof_http.Index)
}
r.MethodNotAllowedHandler = MethodNotAllowedHandler{}
mainLog.Info("Initialising Tyk REST API Endpoints")
// set up main API handlers
r.HandleFunc("/reload/group", groupResetHandler).Methods("GET")
r.HandleFunc("/reload", resetHandler(nil)).Methods("GET")
if !isRPCMode() {
r.HandleFunc("/org/keys", orgHandler).Methods("GET")
r.HandleFunc("/org/keys/{keyName:[^/]*}", orgHandler).Methods("POST", "PUT", "GET", "DELETE")
r.HandleFunc("/keys/policy/{keyName}", policyUpdateHandler).Methods("POST")
r.HandleFunc("/keys/create", createKeyHandler).Methods("POST")
r.HandleFunc("/apis", apiHandler).Methods("GET", "POST", "PUT", "DELETE")
r.HandleFunc("/apis/{apiID}", apiHandler).Methods("GET", "POST", "PUT", "DELETE")
r.HandleFunc("/health", healthCheckhandler).Methods("GET")
r.HandleFunc("/oauth/clients/create", createOauthClient).Methods("POST")
r.HandleFunc("/oauth/refresh/{keyName}", invalidateOauthRefresh).Methods("DELETE")
r.HandleFunc("/cache/{apiID}", invalidateCacheHandler).Methods("DELETE")
} else {
mainLog.Info("Node is slaved, REST API minimised")
}
r.HandleFunc("/debug", traceHandler).Methods("POST")
r.HandleFunc("/keys", keyHandler).Methods("POST", "PUT", "GET", "DELETE")
r.HandleFunc("/keys/{keyName:[^/]*}", keyHandler).Methods("POST", "PUT", "GET", "DELETE")
r.HandleFunc("/certs", certHandler).Methods("POST", "GET")
r.HandleFunc("/certs/{certID:[^/]*}", certHandler).Methods("POST", "GET", "DELETE")
r.HandleFunc("/oauth/clients/{apiID}", oAuthClientHandler).Methods("GET", "DELETE")
r.HandleFunc("/oauth/clients/{apiID}/{keyName:[^/]*}", oAuthClientHandler).Methods("GET", "DELETE")
r.HandleFunc("/oauth/clients/{apiID}/{keyName}/tokens", oAuthClientTokensHandler).Methods("GET")
mainLog.Debug("Loaded API Endpoints")
}
// checkIsAPIOwner will ensure that the accessor of the tyk API has the
// correct security credentials - this is a shared secret between the
// client and the owner and is set in the tyk.conf file. This should
// never be made public!
func checkIsAPIOwner(next http.Handler) http.Handler {
secret := config.Global().Secret
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
tykAuthKey := r.Header.Get("X-Tyk-Authorization")
if tykAuthKey != secret {
// Error
mainLog.Warning("Attempted administrative access with invalid or missing key!")
doJSONWrite(w, http.StatusForbidden, apiError("Forbidden"))
return
}
next.ServeHTTP(w, r)
})
}
func generateOAuthPrefix(apiID string) string {
return "oauth-data." + apiID + "."
}
// Create API-specific OAuth handlers and respective auth servers
func addOAuthHandlers(spec *APISpec, muxer *mux.Router) *OAuthManager {
apiAuthorizePath := spec.Proxy.ListenPath + "tyk/oauth/authorize-client{_:/?}"
clientAuthPath := spec.Proxy.ListenPath + "oauth/authorize{_:/?}"
clientAccessPath := spec.Proxy.ListenPath + "oauth/token{_:/?}"
serverConfig := osin.NewServerConfig()
serverConfig.ErrorStatusCode = http.StatusForbidden
serverConfig.AllowedAccessTypes = spec.Oauth2Meta.AllowedAccessTypes
serverConfig.AllowedAuthorizeTypes = spec.Oauth2Meta.AllowedAuthorizeTypes
serverConfig.RedirectUriSeparator = config.Global().OauthRedirectUriSeparator
prefix := generateOAuthPrefix(spec.APIID)
storageManager := getGlobalStorageHandler(prefix, false)
storageManager.Connect()
osinStorage := &RedisOsinStorageInterface{storageManager, spec.SessionManager} //TODO: Needs storage manager from APISpec
osinServer := TykOsinNewServer(serverConfig, osinStorage)
oauthManager := OAuthManager{spec, osinServer}
oauthHandlers := OAuthHandlers{oauthManager}
muxer.Handle(apiAuthorizePath, checkIsAPIOwner(allowMethods(oauthHandlers.HandleGenerateAuthCodeData, "POST")))
muxer.HandleFunc(clientAuthPath, allowMethods(oauthHandlers.HandleAuthorizePassthrough, "GET", "POST"))
muxer.HandleFunc(clientAccessPath, allowMethods(oauthHandlers.HandleAccessRequest, "GET", "POST"))
return &oauthManager
}
func addBatchEndpoint(spec *APISpec, muxer *mux.Router) {
mainLog.Debug("Batch requests enabled for API")
apiBatchPath := spec.Proxy.ListenPath + "tyk/batch/"
batchHandler := BatchRequestHandler{API: spec}
muxer.HandleFunc(apiBatchPath, batchHandler.HandleBatchRequest)
}
func loadCustomMiddleware(spec *APISpec) ([]string, apidef.MiddlewareDefinition, []apidef.MiddlewareDefinition, []apidef.MiddlewareDefinition, []apidef.MiddlewareDefinition, apidef.MiddlewareDriver) {
mwPaths := []string{}
var mwAuthCheckFunc apidef.MiddlewareDefinition
mwPreFuncs := []apidef.MiddlewareDefinition{}
mwPostFuncs := []apidef.MiddlewareDefinition{}
mwPostKeyAuthFuncs := []apidef.MiddlewareDefinition{}
mwDriver := apidef.OttoDriver
// Set AuthCheck hook
if spec.CustomMiddleware.AuthCheck.Name != "" {
mwAuthCheckFunc = spec.CustomMiddleware.AuthCheck
if spec.CustomMiddleware.AuthCheck.Path != "" {
// Feed a JS file to Otto
mwPaths = append(mwPaths, spec.CustomMiddleware.AuthCheck.Path)
}
}
// Load from the configuration
for _, mwObj := range spec.CustomMiddleware.Pre {
mwPaths = append(mwPaths, mwObj.Path)
mwPreFuncs = append(mwPreFuncs, mwObj)
mainLog.Debug("Loading custom PRE-PROCESSOR middleware: ", mwObj.Name)
}
for _, mwObj := range spec.CustomMiddleware.Post {
mwPaths = append(mwPaths, mwObj.Path)
mwPostFuncs = append(mwPostFuncs, mwObj)
mainLog.Debug("Loading custom POST-PROCESSOR middleware: ", mwObj.Name)
}
// Load from folders
for _, folder := range [...]struct {
name string
single *apidef.MiddlewareDefinition
slice *[]apidef.MiddlewareDefinition
}{
{name: "pre", slice: &mwPreFuncs},
{name: "auth", single: &mwAuthCheckFunc},
{name: "post_auth", slice: &mwPostKeyAuthFuncs},
{name: "post", slice: &mwPostFuncs},
} {
globPath := filepath.Join(config.Global().MiddlewarePath, spec.APIID, folder.name, "*.js")
paths, _ := filepath.Glob(globPath)
for _, path := range paths {
mainLog.Debug("Loading file middleware from ", path)
mwDef := apidef.MiddlewareDefinition{
Name: strings.Split(filepath.Base(path), ".")[0],
Path: path,
}
mainLog.Debug("-- Middleware name ", mwDef.Name)
mwDef.RequireSession = strings.HasSuffix(mwDef.Name, "_with_session")
if mwDef.RequireSession {
switch folder.name {
case "post_auth", "post":
mainLog.Debug("-- Middleware requires session")
default:
mainLog.Warning("Middleware requires session, but isn't post-auth: ", mwDef.Name)
}
}
mwPaths = append(mwPaths, path)
if folder.single != nil {
*folder.single = mwDef
} else {
*folder.slice = append(*folder.slice, mwDef)
}
}
}
// Set middleware driver, defaults to OttoDriver
if spec.CustomMiddleware.Driver != "" {
mwDriver = spec.CustomMiddleware.Driver
}
// Load PostAuthCheck hooks
for _, mwObj := range spec.CustomMiddleware.PostKeyAuth {
if mwObj.Path != "" {
// Otto files are specified here
mwPaths = append(mwPaths, mwObj.Path)
}
mwPostKeyAuthFuncs = append(mwPostKeyAuthFuncs, mwObj)
}
return mwPaths, mwAuthCheckFunc, mwPreFuncs, mwPostFuncs, mwPostKeyAuthFuncs, mwDriver
}
func createResponseMiddlewareChain(spec *APISpec) {
// Create the response processors
responseChain := make([]TykResponseHandler, len(spec.ResponseProcessors))
for i, processorDetail := range spec.ResponseProcessors {
processor := responseProcessorByName(processorDetail.Name)
if processor == nil {
mainLog.Error("No such processor: ", processorDetail.Name)
return
}
if err := processor.Init(processorDetail.Options, spec); err != nil {
mainLog.Debug("Failed to init processor: ", err)
}
mainLog.Debug("Loading Response processor: ", processorDetail.Name)
responseChain[i] = processor
}
spec.ResponseChain = responseChain
}
func handleCORS(chain *[]alice.Constructor, spec *APISpec) {
if spec.CORS.Enable {
mainLog.Debug("CORS ENABLED")
c := cors.New(cors.Options{
AllowedOrigins: spec.CORS.AllowedOrigins,
AllowedMethods: spec.CORS.AllowedMethods,
AllowedHeaders: spec.CORS.AllowedHeaders,
ExposedHeaders: spec.CORS.ExposedHeaders,
AllowCredentials: spec.CORS.AllowCredentials,
MaxAge: spec.CORS.MaxAge,
OptionsPassthrough: spec.CORS.OptionsPassthrough,
Debug: spec.CORS.Debug,
})
*chain = append(*chain, c.Handler)
}
}
func isRPCMode() bool {
return config.Global().AuthOverride.ForceAuthProvider &&
config.Global().AuthOverride.AuthProvider.StorageEngine == RPCStorageEngine
}
func rpcReloadLoop(rpcKey string) {
for {
RPCListener.CheckForReload(rpcKey)
}
}
var reloadMu sync.Mutex
func doReload() {
reloadMu.Lock()
defer reloadMu.Unlock()
// Initialize/reset the JSVM
if config.Global().EnableJSVM {
GlobalEventsJSVM.Init(nil, logrus.NewEntry(log))
}
// Load the API Policies
if _, err := syncPolicies(); err != nil {
mainLog.Error("Error during syncing policies:", err.Error())
return
}
// load the specs
if count, err := syncAPISpecs(); err != nil {
mainLog.Error("Error during syncing apis:", err.Error())
return
} else {
// skip re-loading only if dashboard service reported 0 APIs
// and current registry had 0 APIs
if count == 0 && apisByIDLen() == 0 {
mainLog.Warning("No API Definitions found, not reloading")
return
}
}
// We have updated specs, lets load those...
mainLog.Info("Preparing new router")
newRouter := mux.NewRouter()
if config.Global().HttpServerOptions.OverrideDefaults {
newRouter.SkipClean(config.Global().HttpServerOptions.SkipURLCleaning)
}
if config.Global().ControlAPIPort == 0 {
loadAPIEndpoints(newRouter)
}
loadGlobalApps(newRouter)
mainLog.Info("API reload complete")
mainRouter = newRouter
}
// startReloadChan and reloadDoneChan are used by the two reload loops
// running in separate goroutines to talk. reloadQueueLoop will use
// startReloadChan to signal to reloadLoop to start a reload, and
// reloadLoop will use reloadDoneChan to signal back that it's done with
// the reload. Buffered simply to not make the goroutines block each
// other.
var startReloadChan = make(chan struct{}, 1)
var reloadDoneChan = make(chan struct{}, 1)
func reloadLoop(tick <-chan time.Time) {
<-tick
for range startReloadChan {
mainLog.Info("reload: initiating")
doReload()
mainLog.Info("reload: complete")
mainLog.Info("Initiating coprocess reload")
doCoprocessReload()
reloadDoneChan <- struct{}{}
<-tick
}
}
// reloadQueue is used by reloadURLStructure to queue a reload. It's not
// buffered, as reloadQueueLoop should pick these up immediately.
var reloadQueue = make(chan func())
func reloadQueueLoop() {
reloading := false
var fns []func()
for {
select {
case <-reloadDoneChan:
for _, fn := range fns {
fn()
}
fns = fns[:0]
reloading = false
case fn := <-reloadQueue:
if fn != nil {
fns = append(fns, fn)
}
if !reloading {
mainLog.Info("Reload queued")
startReloadChan <- struct{}{}
reloading = true
} else {
mainLog.Info("Reload already queued")
}
}
}
}
// reloadURLStructure will queue an API reload. The reload will
// eventually create a new muxer, reload all the app configs for an
// instance and then replace the DefaultServeMux with the new one. This
// enables a reconfiguration to take place without stopping any requests
// from being handled.
//
// done will be called when the reload is finished. Note that if a
// reload is already queued, another won't be queued, but done will
// still be called when said queued reload is finished.
func reloadURLStructure(done func()) {
reloadQueue <- done
}
func setupLogger() {
if config.Global().UseSentry {
mainLog.Debug("Enabling Sentry support")
hook, err := logrus_sentry.NewSentryHook(config.Global().SentryCode, []logrus.Level{
logrus.PanicLevel,
logrus.FatalLevel,
logrus.ErrorLevel,
})
hook.Timeout = 0
if err == nil {
log.Hooks.Add(hook)
rawLog.Hooks.Add(hook)
}
mainLog.Debug("Sentry hook active")
}
if config.Global().UseSyslog {
mainLog.Debug("Enabling Syslog support")
hook, err := logrus_syslog.NewSyslogHook(config.Global().SyslogTransport,
config.Global().SyslogNetworkAddr,
syslog.LOG_INFO, "")
if err == nil {
log.Hooks.Add(hook)
rawLog.Hooks.Add(hook)
}
mainLog.Debug("Syslog hook active")
}
if config.Global().UseGraylog {
mainLog.Debug("Enabling Graylog support")
hook := graylogHook.NewGraylogHook(config.Global().GraylogNetworkAddr,
map[string]interface{}{"tyk-module": "gateway"})
log.Hooks.Add(hook)
rawLog.Hooks.Add(hook)
mainLog.Debug("Graylog hook active")
}
if config.Global().UseLogstash {
mainLog.Debug("Enabling Logstash support")
conn, err := gas.Dial(config.Global().LogstashTransport, config.Global().LogstashNetworkAddr)
if err != nil {
log.Errorf("Error making connection for logstash hook: %v", err)
}
hook, err := logstashHook.NewHookWithConn(conn, "tyk-gateway")
if err == nil {
log.Hooks.Add(hook)
rawLog.Hooks.Add(hook)
mainLog.Debug("Logstash hook active")
}
}
if config.Global().UseRedisLog {
hook := newRedisHook()
log.Hooks.Add(hook)
rawLog.Hooks.Add(hook)
mainLog.Debug("Redis log hook active")
}
}
func initialiseSystem() error {
if runningTests && os.Getenv("TYK_LOGLEVEL") == "" {
// `go test` without TYK_LOGLEVEL set defaults to no log
// output
log.Level = logrus.ErrorLevel
log.Out = ioutil.Discard
gorpc.SetErrorLogger(func(string, ...interface{}) {})
stdlog.SetOutput(ioutil.Discard)
} else if *cli.DebugMode {
log.Level = logrus.DebugLevel
mainLog.Debug("Enabling debug-level output")
}
if *cli.Conf != "" {
mainLog.Debugf("Using %s for configuration", *cli.Conf)
confPaths = []string{*cli.Conf}
} else {
mainLog.Debug("No configuration file defined, will try to use default (tyk.conf)")
}
if !runningTests {
globalConf := config.Config{}
if err := config.Load(confPaths, &globalConf); err != nil {
return err
}
afterConfSetup(&globalConf)
if globalConf.PIDFileLocation == "" {
globalConf.PIDFileLocation = "/var/run/tyk/tyk-gateway.pid"
}
config.SetGlobal(globalConf)
}
if os.Getenv("TYK_LOGLEVEL") == "" && !*cli.DebugMode {
level := strings.ToLower(config.Global().LogLevel)
switch level {
case "", "info":
// default, do nothing
case "error":
log.Level = logrus.ErrorLevel
case "warn":
log.Level = logrus.WarnLevel
case "debug":
log.Level = logrus.DebugLevel
default:
mainLog.Fatalf("Invalid log level %q specified in config, must be error, warn, debug or info. ", level)
}
}
if config.Global().Storage.Type != "redis" {
mainLog.Fatal("Redis connection details not set, please ensure that the storage type is set to Redis and that the connection parameters are correct.")
}
// suply rpc client globals to join it main loging and instrumentation sub systems
rpc.Log = log
rpc.Instrument = instrument
setupGlobals()
if *cli.Port != "" {
portNum, err := strconv.Atoi(*cli.Port)
if err != nil {
mainLog.Error("Port specified in flags must be a number: ", err)
} else {
globalConf := config.Global()
globalConf.ListenPort = portNum
config.SetGlobal(globalConf)
}
}
// Enable all the loggers
setupLogger()
mainLog.Info("PIDFile location set to: ", config.Global().PIDFileLocation)
pidfile.SetPidfilePath(config.Global().PIDFileLocation)
if err := pidfile.Write(); err != nil {
mainLog.Error("Failed to write PIDFile: ", err)
}
getHostDetails()
setupInstrumentation()
if config.Global().HttpServerOptions.UseLE_SSL {
go StartPeriodicStateBackup(&LE_MANAGER)
}
return nil
}
// afterConfSetup takes care of non-sensical config values (such as zero
// timeouts) and sets up a few globals that depend on the config.
func afterConfSetup(conf *config.Config) {
if conf.SlaveOptions.CallTimeout == 0 {
conf.SlaveOptions.CallTimeout = 30
}
if conf.SlaveOptions.PingTimeout == 0 {
conf.SlaveOptions.PingTimeout = 60
}
rpc.GlobalRPCPingTimeout = time.Second * time.Duration(conf.SlaveOptions.PingTimeout)
rpc.GlobalRPCCallTimeout = time.Second * time.Duration(conf.SlaveOptions.CallTimeout)
initGenericEventHandlers(conf)
regexp.ResetCache(time.Second*time.Duration(conf.RegexpCacheExpire), !conf.DisableRegexpCache)
if conf.HealthCheckEndpointName == "" {
conf.HealthCheckEndpointName = "hello"
}
}
var hostDetails struct {
Hostname string
PID int
}
func getHostDetails() {
var err error
if hostDetails.PID, err = pidfile.Read(); err != nil {
mainLog.Error("Failed ot get host pid: ", err)
}
if hostDetails.Hostname, err = os.Hostname(); err != nil {
mainLog.Error("Failed ot get hostname: ", err)
}
}
func getGlobalStorageHandler(keyPrefix string, hashKeys bool) storage.Handler {
if config.Global().SlaveOptions.UseRPC {
return &RPCStorageHandler{
KeyPrefix: keyPrefix,
HashKeys: hashKeys,
}
}
return &storage.RedisCluster{KeyPrefix: keyPrefix, HashKeys: hashKeys}
}
func main() {
cli.Init(VERSION, confPaths)
cli.Parse()
// Stop gateway process if not running in "start" mode:
if !cli.DefaultMode {
os.Exit(0)
}
NodeID = "solo-" + uuid.NewV4().String()
if err := initialiseSystem(); err != nil {
mainLog.Fatalf("Error initialising system: %v", err)
}
var controlListener net.Listener
onFork := func() {
mainLog.Warning("PREPARING TO FORK")
if controlListener != nil {
if err := controlListener.Close(); err != nil {
mainLog.Error("Control listen handler exit: ", err)
}
mainLog.Info("Control listen closed")
}
if config.Global().UseDBAppConfigs {
mainLog.Info("Stopping heartbeat")
DashService.StopBeating()
mainLog.Info("Waiting to de-register")
time.Sleep(10 * time.Second)
os.Setenv("TYK_SERVICE_NONCE", ServiceNonce)
os.Setenv("TYK_SERVICE_NODEID", NodeID)
}
}
listener, goAgainErr := goagain.Listener(onFork)
if controlAPIPort := config.Global().ControlAPIPort; controlAPIPort > 0 {
var err error
if controlListener, err = generateListener(controlAPIPort); err != nil {
mainLog.Fatalf("Error starting control API listener: %s", err)
} else {
mainLog.Info("Starting control API listener: ", controlListener, err, controlAPIPort)
}
} else {
mainLog.Warn("The control_api_port should be changed for production")
}
start()
checkup.CheckFileDescriptors()
checkup.CheckCpus()
checkup.CheckDefaultSecrets(config.Global())
// Wait while Redis connection pools are ready before start serving traffic
if !storage.IsConnected() {
mainLog.Fatal("Redis connection pools are not ready. Exiting...")
}
mainLog.Info("Redis connection pools are ready")
if *cli.MemProfile {
mainLog.Debug("Memory profiling active")
var err error
if memProfFile, err = os.Create("tyk.mprof"); err != nil {
panic(err)
}
defer memProfFile.Close()
}
if *cli.CPUProfile {
mainLog.Info("Cpu profiling active")
cpuProfFile, err := os.Create("tyk.prof")
if err != nil {
panic(err)
}
pprof.StartCPUProfile(cpuProfFile)
defer pprof.StopCPUProfile()