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server.go
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server.go
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package helper
import (
"context"
"time"
"github.com/gorilla/mux"
entitiesAPI "github.com/mycontroller-org/server/v2/pkg/api/entities"
"github.com/mycontroller-org/server/v2/pkg/configuration"
"github.com/mycontroller-org/server/v2/pkg/encryption"
httpRouter "github.com/mycontroller-org/server/v2/pkg/http_router"
deletionSVC "github.com/mycontroller-org/server/v2/pkg/service/deletion"
fwdPayloadSVC "github.com/mycontroller-org/server/v2/pkg/service/forward_payload"
gatewaySVC "github.com/mycontroller-org/server/v2/pkg/service/gateway"
gwMsgProcessorSVC "github.com/mycontroller-org/server/v2/pkg/service/gateway_msg_processor"
handlerSVC "github.com/mycontroller-org/server/v2/pkg/service/handler"
httpListenerSVC "github.com/mycontroller-org/server/v2/pkg/service/http_listener"
resourceSVC "github.com/mycontroller-org/server/v2/pkg/service/resource"
schedulerSVC "github.com/mycontroller-org/server/v2/pkg/service/scheduler"
systemJobsSVC "github.com/mycontroller-org/server/v2/pkg/service/system_jobs"
taskSVC "github.com/mycontroller-org/server/v2/pkg/service/task"
vaSVC "github.com/mycontroller-org/server/v2/pkg/service/virtual_assistant"
websocketSVC "github.com/mycontroller-org/server/v2/pkg/service/websocket"
"github.com/mycontroller-org/server/v2/pkg/types"
"github.com/mycontroller-org/server/v2/pkg/types/config"
schedulerTY "github.com/mycontroller-org/server/v2/pkg/types/scheduler"
serviceTY "github.com/mycontroller-org/server/v2/pkg/types/service"
"github.com/mycontroller-org/server/v2/pkg/upgrade"
templateUtils "github.com/mycontroller-org/server/v2/pkg/utils/template"
variablesUtils "github.com/mycontroller-org/server/v2/pkg/utils/variables"
"github.com/mycontroller-org/server/v2/pkg/version"
busTY "github.com/mycontroller-org/server/v2/plugin/bus/types"
metricTY "github.com/mycontroller-org/server/v2/plugin/database/metric/types"
storageTY "github.com/mycontroller-org/server/v2/plugin/database/storage/types"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
type Server struct {
ctx context.Context
config *config.Config
logger *zap.Logger
enc *encryption.Encryption
metric metricTY.Plugin
storage storageTY.Plugin
bus busTY.Plugin
api *entitiesAPI.API
// services
coreSchedulerSVC schedulerTY.CoreScheduler // core scheduler, used to execute all the cron jobs
resourceSVC serviceTY.Service
messageProcessorSVC serviceTY.Service
taskSVC serviceTY.Service
schedulerSVC serviceTY.Service
deletionSVC serviceTY.Service
fwdPayloadSVC serviceTY.Service
gatewaySVC serviceTY.Service
handlerSVC serviceTY.Service
systemJobsSVC serviceTY.Service
virtualAssistantSVC serviceTY.Service
websocketSVC serviceTY.Service
}
func (s *Server) Start(ctx context.Context, configFilePath string) error {
s.ctx = ctx
router := mux.NewRouter()
// load config
cfg, err := configuration.Get(configFilePath)
if err != nil {
return err
}
// load logger
ctx, logger := loadLogger(ctx, cfg.Logger, "server")
// set environment values
err = setEnvironmentVariables(cfg)
if err != nil {
logger.Error("error on setting environment variables", zap.Error(err))
return err
}
// load encryption helper
ctx, enc := loadEncryptionHelper(ctx, logger, cfg.Secret)
// get core scheduler and inject into context
ctx, coreScheduler := loadCoreScheduler(ctx)
err = coreScheduler.Start()
if err != nil {
logger.Error("error on starting core scheduler", zap.Error(err))
return err
}
// load bus plugin
ctx, bus, err := loadBus(ctx, cfg.Bus)
if err != nil {
logger.Error("error on getting bus", zap.Error(err))
return err
}
// load storage plugin
ctx, storage, err := loadStorageDatabase(ctx, cfg.Database.Storage)
if err != nil {
logger.Error("error on getting storage database", zap.Error(err))
return err
}
// load storage plugin
ctx, metric, err := loadMetricDatabase(ctx, cfg.Database.Metric)
if err != nil {
logger.Error("error on getting metric database", zap.Error(err))
return err
}
// load core api
ctx, api, err := loadCoreApi(ctx)
if err != nil {
logger.Error("error on getting core api", zap.Error(err))
return err
}
// add into struct
s.ctx = ctx
s.config = cfg
s.logger = logger
s.enc = enc
s.coreSchedulerSVC = coreScheduler
s.bus = bus
s.storage = storage
s.metric = metric
s.api = api
// perform restore operation
s.checkSystemRestore()
// TODO: perform internal upgrade
// imports storage data from disk to database
err = s.runStorageImport()
if err != nil {
return err
}
// setup initial system settings
s.updateInitialSystemSettings()
s.setupInitialUser()
// start upgrade, if any
s.startUpgrade()
// engines needed in task and schedules service
// get variables engine
variablesEngine, err := s.getVariablesEngine()
if err != nil {
return err
}
// load services
//-------------------------------------------
// resource handler service
resource, err := resourceSVC.New(ctx)
if err != nil {
logger.Error("error on getting resource handler service", zap.Error(err))
return err
}
// message processor service
messageProcessor, err := gwMsgProcessorSVC.New(ctx, "")
if err != nil {
logger.Error("error on getting message processor service", zap.Error(err))
return err
}
// gateway service
gateway, err := gatewaySVC.New(ctx, &cfg.Gateway)
if err != nil {
logger.Error("error on getting gateway service", zap.Error(err))
return err
}
// task service
task, err := taskSVC.New(ctx, &cfg.Task, variablesEngine)
if err != nil {
logger.Error("error on getting task service", zap.Error(err))
return err
}
// scheduler service
scheduler, err := schedulerSVC.New(ctx, &cfg.Schedule, variablesEngine, api.Sunrise())
if err != nil {
logger.Error("error on getting scheduler service", zap.Error(err))
return err
}
// handler service
handler, err := handlerSVC.New(ctx, &cfg.Handler)
if err != nil {
logger.Error("error on getting handler service", zap.Error(err))
return err
}
// deletion service
deletion, err := deletionSVC.New(ctx)
if err != nil {
logger.Error("error on getting deletion service", zap.Error(err))
return err
}
// system job service
systemJobs, err := systemJobsSVC.New(ctx)
if err != nil {
logger.Error("error on getting system jobs service", zap.Error(err))
return err
}
// forward payload service
forwardPayload, err := fwdPayloadSVC.New(ctx)
if err != nil {
logger.Error("error on getting forward payload service", zap.Error(err))
return err
}
// websocket service
websocket, err := websocketSVC.New(ctx, router)
if err != nil {
logger.Error("error on getting websocket service", zap.Error(err))
return err
}
// virtual assistant service
virtualAssistant, err := vaSVC.New(ctx, &cfg.VirtualAssistant, router)
if err != nil {
logger.Error("error on getting virtual assistant service", zap.Error(err))
return err
}
// load http handlers
// all other handlers will be registered prior to this call,
// because this router registers a path with prefix "/" to handle static web assets
// TODO: this to be fixed by adding only required paths for web contents
httpHandler, err := httpRouter.New(ctx, cfg, router)
if err != nil {
logger.Error("error on getting http router", zap.Error(err))
return err
}
// used for debug purpose, to see the registered paths
s.printsHandlersPath(router)
// http listener service
httpListener, err := httpListenerSVC.New(ctx, cfg.Web, httpHandler)
if err != nil {
logger.Error("error on getting http listener service", zap.Error(err))
return err
}
// load all the services in an array and start in order
services := []serviceTY.Service{
resource,
messageProcessor,
gateway,
task,
scheduler,
handler,
deletion,
systemJobs,
websocket,
virtualAssistant,
forwardPayload,
// do not include http listener
}
// start all the services
for index := range services {
service := services[index]
err := service.Start()
if err != nil {
s.logger.Error("error on starting a service", zap.String("name", service.Name()), zap.Error(err))
return err
}
}
// add services into struct
s.resourceSVC = resource
s.messageProcessorSVC = messageProcessor
s.gatewaySVC = gateway
s.taskSVC = task
s.schedulerSVC = scheduler
s.handlerSVC = handler
s.deletionSVC = deletion
s.systemJobsSVC = systemJobs
s.websocketSVC = websocket
s.virtualAssistantSVC = virtualAssistant
s.fwdPayloadSVC = forwardPayload
// call shutdown hook
shutdownHook := NewShutdownHook(s.logger, s.stop, s.bus, true)
go shutdownHook.Start()
// start http handler service
return httpListener.Start()
}
func (s *Server) stop() {
// stop services, order of the execution is important
services := []serviceTY.Service{
s.fwdPayloadSVC,
s.virtualAssistantSVC,
s.websocketSVC,
s.systemJobsSVC,
s.deletionSVC,
s.handlerSVC,
s.schedulerSVC,
s.taskSVC,
s.gatewaySVC,
s.messageProcessorSVC,
s.resourceSVC,
s.coreSchedulerSVC,
}
for index := range services {
service := services[index]
err := service.Close()
if err != nil {
s.logger.Error("error on closing a service", zap.String("name", service.Name()), zap.Error(err))
}
}
// unload support apis and plugins
if err := s.storage.Close(); err != nil {
s.logger.Error("error on closing storage connection", zap.Error(err))
}
if err := s.metric.Close(); err != nil {
s.logger.Error("error on closing metric connection", zap.Error(err))
}
if err := s.bus.Close(); err != nil {
s.logger.Error("error on closing bus service", zap.Error(err))
}
}
func (s *Server) getVariablesEngine() (types.VariablesEngine, error) {
// engines needed in task and schedules service
// create template engine with sunrise and sunset
templateFuncsMap := map[string]interface{}{
"sunrise": s.api.Sunrise().SunriseTime,
"sunset": s.api.Sunrise().SunsetTime,
"version": version.Get,
}
// get template engine
templateEngine, err := templateUtils.New(s.ctx, templateFuncsMap)
if err != nil {
s.logger.Error("error on getting template engine", zap.Error(err))
return nil, err
}
// get variables engine
variablesEngine, err := variablesUtils.New(s.ctx, templateEngine)
if err != nil {
s.logger.Error("error on getting variables engine", zap.Error(err))
return nil, err
}
return variablesEngine, nil
}
func (s *Server) printsHandlersPath(router *mux.Router) {
// execute only on debug enabled
if !s.logger.Level().Enabled(zapcore.DebugLevel) {
return
}
walkFunc := func(route *mux.Route, router *mux.Router, ancestors []*mux.Route) error {
path, err := route.GetPathRegexp()
if err != nil {
return err
}
s.logger.Debug("http handler registered path", zap.String("path", path))
return nil
}
err := router.Walk(walkFunc)
if err != nil {
s.logger.Error("error on calling walk func", zap.Error(err))
}
}
// starts the upgrade process
// checks the database for the version and applies the upgrade patches, if needed
func (s *Server) startUpgrade() {
// get the version details from database
sysVersion, err := s.api.Settings().GetVersion()
if err != nil {
s.logger.Fatal("error on getting version details", zap.Error(err))
}
s.logger.Info("checking for upgrade", zap.String("lastUpgradePatch", sysVersion.LastUpgrade))
// if there is no version available, indicates that the software installed before the upgrade feature introduced
// keep 1.9.9 as last update to proceed all the upgrades
// Note: MyController V2 version starts from 2.0.0
if sysVersion.LastUpgrade == "" {
sysVersion.LastUpgrade = "1.9.9"
}
// trigger upgrade
start := time.Now()
appliedUpgradeVersion, err := upgrade.StartUpgrade(s.ctx, sysVersion.LastUpgrade)
if err != nil {
s.logger.Fatal("error on upgrade", zap.Error(err))
}
if appliedUpgradeVersion != "" {
s.logger.Info("upgrade completed", zap.String("appliedPatchVersion", appliedUpgradeVersion), zap.String("timeTaken", time.Since(start).String()))
}
// update the version in to storage database
sysVersion, err = s.api.Settings().GetVersion()
if err != nil {
s.logger.Fatal("error on getting version details", zap.Error(err))
}
ver := version.Get()
sysVersion.Version = ver.Version
sysVersion.GitCommit = ver.GitCommit
sysVersion.Database = s.storage.Name()
err = s.api.Settings().UpdateVersion(sysVersion)
if err != nil {
s.logger.Fatal("error on updating version details into database", zap.Error(err))
}
}