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app.go
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app.go
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// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package app
import (
"io/ioutil"
"net/http"
"sync/atomic"
l4g "github.com/alecthomas/log4go"
"github.com/mattermost/mattermost-server/einterfaces"
ejobs "github.com/mattermost/mattermost-server/einterfaces/jobs"
"github.com/mattermost/mattermost-server/jobs"
"github.com/mattermost/mattermost-server/model"
"github.com/mattermost/mattermost-server/plugin/pluginenv"
"github.com/mattermost/mattermost-server/utils"
)
type App struct {
goroutineCount int32
goroutineExitSignal chan struct{}
Srv *Server
PluginEnv *pluginenv.Environment
PluginConfigListenerId string
EmailBatching *EmailBatchingJob
Hubs []*Hub
HubsStopCheckingForDeadlock chan bool
Jobs *jobs.JobServer
AccountMigration einterfaces.AccountMigrationInterface
Brand einterfaces.BrandInterface
Cluster einterfaces.ClusterInterface
Compliance einterfaces.ComplianceInterface
DataRetention einterfaces.DataRetentionInterface
Elasticsearch einterfaces.ElasticsearchInterface
Ldap einterfaces.LdapInterface
Metrics einterfaces.MetricsInterface
Mfa einterfaces.MfaInterface
Saml einterfaces.SamlInterface
}
var appCount = 0
// New creates a new App. You must call Shutdown when you're done with it.
// XXX: For now, only one at a time is allowed as some resources are still shared.
func New() *App {
appCount++
if appCount > 1 {
panic("Only one App should exist at a time. Did you forget to call Shutdown()?")
}
app := &App{
goroutineExitSignal: make(chan struct{}, 1),
Jobs: &jobs.JobServer{},
}
app.initEnterprise()
return app
}
func (a *App) Shutdown() {
appCount--
if a.Srv != nil {
l4g.Info(utils.T("api.server.stop_server.stopping.info"))
a.Srv.GracefulServer.Stop(TIME_TO_WAIT_FOR_CONNECTIONS_TO_CLOSE_ON_SERVER_SHUTDOWN)
<-a.Srv.GracefulServer.StopChan()
a.HubStop()
a.ShutDownPlugins()
a.WaitForGoroutines()
a.Srv.Store.Close()
a.Srv = nil
l4g.Info(utils.T("api.server.stop_server.stopped.info"))
}
}
var accountMigrationInterface func(*App) einterfaces.AccountMigrationInterface
func RegisterAccountMigrationInterface(f func(*App) einterfaces.AccountMigrationInterface) {
accountMigrationInterface = f
}
var clusterInterface func(*App) einterfaces.ClusterInterface
func RegisterClusterInterface(f func(*App) einterfaces.ClusterInterface) {
clusterInterface = f
}
var complianceInterface func(*App) einterfaces.ComplianceInterface
func RegisterComplianceInterface(f func(*App) einterfaces.ComplianceInterface) {
complianceInterface = f
}
var dataRetentionInterface func(*App) einterfaces.DataRetentionInterface
func RegisterDataRetentionInterface(f func(*App) einterfaces.DataRetentionInterface) {
dataRetentionInterface = f
}
var jobsDataRetentionJobInterface func(*App) ejobs.DataRetentionJobInterface
func RegisterJobsDataRetentionJobInterface(f func(*App) ejobs.DataRetentionJobInterface) {
jobsDataRetentionJobInterface = f
}
var jobsElasticsearchAggregatorInterface func(*App) ejobs.ElasticsearchAggregatorInterface
func RegisterJobsElasticsearchAggregatorInterface(f func(*App) ejobs.ElasticsearchAggregatorInterface) {
jobsElasticsearchAggregatorInterface = f
}
var jobsElasticsearchIndexerInterface func(*App) ejobs.ElasticsearchIndexerInterface
func RegisterJobsElasticsearchIndexerInterface(f func(*App) ejobs.ElasticsearchIndexerInterface) {
jobsElasticsearchIndexerInterface = f
}
var jobsLdapSyncInterface func(*App) ejobs.LdapSyncInterface
func RegisterJobsLdapSyncInterface(f func(*App) ejobs.LdapSyncInterface) {
jobsLdapSyncInterface = f
}
var ldapInterface func(*App) einterfaces.LdapInterface
func RegisterLdapInterface(f func(*App) einterfaces.LdapInterface) {
ldapInterface = f
}
var metricsInterface func(*App) einterfaces.MetricsInterface
func RegisterMetricsInterface(f func(*App) einterfaces.MetricsInterface) {
metricsInterface = f
}
var mfaInterface func(*App) einterfaces.MfaInterface
func RegisterMfaInterface(f func(*App) einterfaces.MfaInterface) {
mfaInterface = f
}
var samlInterface func(*App) einterfaces.SamlInterface
func RegisterSamlInterface(f func(*App) einterfaces.SamlInterface) {
samlInterface = f
}
func (a *App) initEnterprise() {
if accountMigrationInterface != nil {
a.AccountMigration = accountMigrationInterface(a)
}
a.Brand = einterfaces.GetBrandInterface()
if clusterInterface != nil {
a.Cluster = clusterInterface(a)
}
if complianceInterface != nil {
a.Compliance = complianceInterface(a)
}
a.Elasticsearch = einterfaces.GetElasticsearchInterface()
if ldapInterface != nil {
a.Ldap = ldapInterface(a)
utils.AddConfigListener(func(_, cfg *model.Config) {
if err := utils.ValidateLdapFilter(cfg, a.Ldap); err != nil {
panic(utils.T(err.Id))
}
})
}
if metricsInterface != nil {
a.Metrics = metricsInterface(a)
}
if mfaInterface != nil {
a.Mfa = mfaInterface(a)
}
if samlInterface != nil {
a.Saml = samlInterface(a)
utils.AddConfigListener(func(_, cfg *model.Config) {
a.Saml.ConfigureSP()
})
}
if dataRetentionInterface != nil {
a.DataRetention = dataRetentionInterface(a)
}
if jobsDataRetentionJobInterface != nil {
a.Jobs.DataRetentionJob = jobsDataRetentionJobInterface(a)
}
if jobsElasticsearchAggregatorInterface != nil {
a.Jobs.ElasticsearchAggregator = jobsElasticsearchAggregatorInterface(a)
}
if jobsElasticsearchIndexerInterface != nil {
a.Jobs.ElasticsearchIndexer = jobsElasticsearchIndexerInterface(a)
}
if jobsLdapSyncInterface != nil {
a.Jobs.LdapSync = jobsLdapSyncInterface(a)
}
}
func (a *App) Config() *model.Config {
return utils.Cfg
}
// Go creates a goroutine, but maintains a record of it to ensure that execution completes before
// the app is destroyed.
func (a *App) Go(f func()) {
atomic.AddInt32(&a.goroutineCount, 1)
go func() {
f()
atomic.AddInt32(&a.goroutineCount, -1)
select {
case a.goroutineExitSignal <- struct{}{}:
default:
}
}()
}
// WaitForGoroutines blocks until all goroutines created by App.Go exit.
func (a *App) WaitForGoroutines() {
for atomic.LoadInt32(&a.goroutineCount) != 0 {
<-a.goroutineExitSignal
}
}
func CloseBody(r *http.Response) {
if r.Body != nil {
ioutil.ReadAll(r.Body)
r.Body.Close()
}
}