/
start.go
259 lines (214 loc) · 6.47 KB
/
start.go
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package cmd
import (
"context"
"fmt"
"os"
"os/signal"
"sync"
"syscall"
"time"
"github.com/cosmos/cosmos-sdk/client"
cliContext "github.com/cosmos/cosmos-sdk/client/context"
"github.com/maticnetwork/heimdall/app"
"github.com/maticnetwork/heimdall/bridge/setu/broadcaster"
"github.com/maticnetwork/heimdall/bridge/setu/listener"
"github.com/maticnetwork/heimdall/bridge/setu/processor"
"github.com/maticnetwork/heimdall/bridge/setu/queue"
"github.com/maticnetwork/heimdall/bridge/setu/util"
"github.com/spf13/cobra"
"github.com/tendermint/tendermint/libs/common"
httpClient "github.com/tendermint/tendermint/rpc/client"
"golang.org/x/sync/errgroup"
"github.com/maticnetwork/heimdall/helper"
"github.com/spf13/viper"
)
const (
waitDuration = 1 * time.Minute
)
// StartBridgeWithCtx starts bridge service and is able to shutdow gracefully
// returns service errors, if any
func StartBridgeWithCtx(shutdownCtx context.Context) error {
// create codec
cdc := app.MakeCodec()
// queue connector & http client
_queueConnector := queue.NewQueueConnector(helper.GetConfig().AmqpURL)
_queueConnector.StartWorker()
_txBroadcaster := broadcaster.NewTxBroadcaster(cdc)
_httpClient := httpClient.NewHTTP(helper.GetConfig().TendermintRPCUrl, "/websocket")
// selected services to start
services := []common.Service{}
services = append(services,
listener.NewListenerService(cdc, _queueConnector, _httpClient),
processor.NewProcessorService(cdc, _queueConnector, _httpClient, _txBroadcaster),
)
// Start http client
err := _httpClient.Start()
if err != nil {
logger.Error("Error connecting to server: %v", err)
return err
}
// cli context
cliCtx := cliContext.NewCLIContext().WithCodec(cdc)
cliCtx.BroadcastMode = client.BroadcastAsync
cliCtx.TrustNode = true
// start bridge services only when node fully synced
loop := true
for loop {
select {
case <-shutdownCtx.Done():
return nil
case <-time.After(waitDuration):
if !util.IsCatchingUp(cliCtx) {
logger.Info("Node up to date, starting bridge services")
loop = false
} else {
logger.Info("Waiting for heimdall to be synced")
}
}
}
// start services
var g errgroup.Group
for _, service := range services {
// loop variable must be captured
srv := service
g.Go(func() error {
if err := srv.Start(); err != nil {
logger.Error("GetStartCmd | serv.Start", "Error", err)
return err
}
<-srv.Quit()
return nil
})
}
// shutdown phase
g.Go(func() error {
// wait for interrupt and start shut down
<-shutdownCtx.Done()
logger.Info("Received stop signal - Stopping all heimdall bridge services")
for _, service := range services {
srv := service
if srv.IsRunning() {
if err := srv.Stop(); err != nil {
logger.Error("GetStartCmd | service.Stop", "Error", err)
return err
}
}
}
// stop http client
if err := _httpClient.Stop(); err != nil {
logger.Error("GetStartCmd | _httpClient.Stop", "Error", err)
return err
}
// stop db instance
util.CloseBridgeDBInstance()
return nil
})
// wait for all routines to finish and log error
if err := g.Wait(); err != nil {
logger.Error("Bridge stopped", "err", err)
return err
}
return nil
}
// StartBridge starts bridge service, isStandAlone prevents os.Exit if the bridge started as side service
func StartBridge(isStandAlone bool) {
// create codec
cdc := app.MakeCodec()
// queue connector & http client
_queueConnector := queue.NewQueueConnector(helper.GetConfig().AmqpURL)
_queueConnector.StartWorker()
_txBroadcaster := broadcaster.NewTxBroadcaster(cdc)
_httpClient := httpClient.NewHTTP(helper.GetConfig().TendermintRPCUrl, "/websocket")
// selected services to start
services := []common.Service{}
services = append(services,
listener.NewListenerService(cdc, _queueConnector, _httpClient),
processor.NewProcessorService(cdc, _queueConnector, _httpClient, _txBroadcaster),
)
// sync group
var wg sync.WaitGroup
// go routine to catch signal
catchSignal := make(chan os.Signal, 1)
signal.Notify(catchSignal, os.Interrupt, syscall.SIGTERM)
go func() {
// sig is a ^C, handle it
for range catchSignal {
// stop processes
logger.Info("Received stop signal - Stopping all services")
for _, service := range services {
if err := service.Stop(); err != nil {
logger.Error("GetStartCmd | service.Stop", "Error", err)
}
}
// stop http client
if err := _httpClient.Stop(); err != nil {
logger.Error("GetStartCmd | _httpClient.Stop", "Error", err)
}
// stop db instance
util.CloseBridgeDBInstance()
// exit
if isStandAlone {
os.Exit(1)
}
}
}()
// Start http client
err := _httpClient.Start()
if err != nil {
panic(fmt.Sprintf("Error connecting to server %v", err))
}
// cli context
cliCtx := cliContext.NewCLIContext().WithCodec(cdc)
cliCtx.BroadcastMode = client.BroadcastAsync
cliCtx.TrustNode = true
// start bridge services only when node fully synced
for {
if !util.IsCatchingUp(cliCtx) {
logger.Info("Node upto date, starting bridge services")
break
} else {
logger.Info("Waiting for heimdall to be synced")
}
time.Sleep(waitDuration)
}
// start all processes
for _, service := range services {
go func(serv common.Service) {
defer wg.Done()
// TODO handle error while starting service
if err := serv.Start(); err != nil {
logger.Error("GetStartCmd | serv.Start", "Error", err)
}
<-serv.Quit()
}(service)
}
// wait for all processes
wg.Add(len(services))
wg.Wait()
}
// GetStartCmd returns the start command to start bridge
func GetStartCmd() *cobra.Command {
startCmd := &cobra.Command{
Use: "start",
Short: "Start bridge server",
Run: func(cmd *cobra.Command, args []string) {
StartBridge(true)
}}
// log level
startCmd.Flags().String(helper.LogLevel, "info", "Log level for bridge")
if err := viper.BindPFlag(helper.LogLevel, startCmd.Flags().Lookup(helper.LogLevel)); err != nil {
logger.Error("GetStartCmd | BindPFlag | logLevel", "Error", err)
}
startCmd.Flags().Bool("all", false, "start all bridge services")
if err := viper.BindPFlag("all", startCmd.Flags().Lookup("all")); err != nil {
logger.Error("GetStartCmd | BindPFlag | all", "Error", err)
}
startCmd.Flags().StringSlice("only", []string{}, "comma separated bridge services to start")
if err := viper.BindPFlag("only", startCmd.Flags().Lookup("only")); err != nil {
logger.Error("GetStartCmd | BindPFlag | only", "Error", err)
}
return startCmd
}
func init() {
rootCmd.AddCommand(GetStartCmd())
}