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query_server.go
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query_server.go
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// Note: To generate a signer key file do: guardiand keygen --block-type "CCQ SERVER SIGNING KEY" /path/to/key/file
// You will need to add this key to ccqAllowedRequesters in the guardian configs.
package ccq
import (
"context"
"crypto/ecdsa"
"fmt"
"net/http"
"os"
"os/signal"
"syscall"
"time"
"github.com/certusone/wormhole/node/pkg/common"
"github.com/certusone/wormhole/node/pkg/p2p"
"github.com/certusone/wormhole/node/pkg/telemetry"
promremotew "github.com/certusone/wormhole/node/pkg/telemetry/prom_remote_write"
"github.com/certusone/wormhole/node/pkg/version"
ethCrypto "github.com/ethereum/go-ethereum/crypto"
ipfslog "github.com/ipfs/go-log/v2"
"github.com/libp2p/go-libp2p/core/crypto"
"github.com/spf13/cobra"
"go.uber.org/zap"
)
const CCQ_SERVER_SIGNING_KEY = "CCQ SERVER SIGNING KEY"
var (
envStr *string
p2pNetworkID *string
p2pPort *uint
p2pBootstrap *string
listenAddr *string
nodeKeyPath *string
signerKeyPath *string
permFile *string
ethRPC *string
ethContract *string
logLevel *string
telemetryLokiURL *string
telemetryNodeName *string
statusAddr *string
promRemoteURL *string
shutdownDelay1 *uint
shutdownDelay2 *uint
monitorPeers *bool
gossipAdvertiseAddress *string
)
const DEV_NETWORK_ID = "/wormhole/dev"
func init() {
envStr = QueryServerCmd.Flags().String("env", "", "environment (devnet, testnet, mainnet)")
p2pNetworkID = QueryServerCmd.Flags().String("network", "", "P2P network identifier (optional, overrides default for environment)")
p2pPort = QueryServerCmd.Flags().Uint("port", 8995, "P2P UDP listener port")
p2pBootstrap = QueryServerCmd.Flags().String("bootstrap", "", "P2P bootstrap peers (optional for testnet or mainnet, overrides default, required for devnet)")
nodeKeyPath = QueryServerCmd.Flags().String("nodeKey", "", "Path to node key (will be generated if it doesn't exist)")
signerKeyPath = QueryServerCmd.Flags().String("signerKey", "", "Path to key used to sign unsigned queries")
listenAddr = QueryServerCmd.Flags().String("listenAddr", "[::]:6069", "Listen address for query server (disabled if blank)")
permFile = QueryServerCmd.Flags().String("permFile", "", "JSON file containing permissions configuration")
ethRPC = QueryServerCmd.Flags().String("ethRPC", "", "Ethereum RPC for fetching current guardian set")
ethContract = QueryServerCmd.Flags().String("ethContract", "", "Ethereum core bridge address for fetching current guardian set")
logLevel = QueryServerCmd.Flags().String("logLevel", "info", "Logging level (debug, info, warn, error, dpanic, panic, fatal)")
telemetryLokiURL = QueryServerCmd.Flags().String("telemetryLokiURL", "", "Loki cloud logging URL")
telemetryNodeName = QueryServerCmd.Flags().String("telemetryNodeName", "", "Node name used in telemetry")
statusAddr = QueryServerCmd.Flags().String("statusAddr", "[::]:6060", "Listen address for status server (disabled if blank)")
promRemoteURL = QueryServerCmd.Flags().String("promRemoteURL", "", "Prometheus remote write URL (Grafana)")
monitorPeers = QueryServerCmd.Flags().Bool("monitorPeers", false, "Should monitor bootstrap peers and attempt to reconnect")
gossipAdvertiseAddress = QueryServerCmd.Flags().String("gossipAdvertiseAddress", "", "External IP to advertize on P2P (use if behind a NAT or running in k8s)")
// The default health check monitoring is every five seconds, with a five second timeout, and you have to miss two, for 20 seconds total.
shutdownDelay1 = QueryServerCmd.Flags().Uint("shutdownDelay1", 25, "Seconds to delay after disabling health check on shutdown")
// The guardians will wait up to 60 seconds before giving up on a request.
shutdownDelay2 = QueryServerCmd.Flags().Uint("shutdownDelay2", 65, "Seconds to wait after delay1 for pending requests to complete")
}
var QueryServerCmd = &cobra.Command{
Use: "query-server",
Short: "Run the cross-chain query server",
Run: runQueryServer,
}
func runQueryServer(cmd *cobra.Command, args []string) {
common.SetRestrictiveUmask()
// Setup logging
lvl, err := ipfslog.LevelFromString(*logLevel)
if err != nil {
fmt.Println("Invalid log level")
os.Exit(1)
}
logger := ipfslog.Logger("query-server").Desugar()
ipfslog.SetAllLoggers(lvl)
env, err := common.ParseEnvironment(*envStr)
if err != nil || (env != common.UnsafeDevNet && env != common.TestNet && env != common.MainNet) {
if *envStr == "" {
logger.Fatal("Please specify --env")
}
logger.Fatal("Invalid value for --env, should be devnet, testnet or mainnet", zap.String("val", *envStr))
}
if *p2pNetworkID == "" {
*p2pNetworkID = p2p.GetNetworkId(env)
} else if env != common.UnsafeDevNet {
logger.Warn("overriding default p2p network ID", zap.String("p2pNetworkID", *p2pNetworkID))
}
if *p2pNetworkID == DEV_NETWORK_ID && env != common.UnsafeDevNet {
logger.Fatal("May not set --network to dev unless --env is also dev", zap.String("network", *p2pNetworkID), zap.String("env", *envStr))
}
networkID := *p2pNetworkID + "/ccq"
if *p2pBootstrap == "" {
*p2pBootstrap, err = p2p.GetCcqBootstrapPeers(env)
if err != nil {
logger.Fatal("failed to determine the bootstrap peers from the environment", zap.String("env", string(env)), zap.Error(err))
}
} else if env != common.UnsafeDevNet {
logger.Warn("overriding default p2p bootstrap peers", zap.String("p2pBootstrap", *p2pBootstrap))
}
if *telemetryLokiURL != "" {
logger.Info("Using Loki telemetry logger")
if *telemetryNodeName == "" {
logger.Fatal("if --telemetryLokiURL is specified --telemetryNodeName must be specified")
}
labels := map[string]string{
"network": *p2pNetworkID,
"node_name": *telemetryNodeName,
"version": version.Version(),
}
tm, err := telemetry.NewLokiCloudLogger(context.Background(), logger, *telemetryLokiURL, "ccq_server", true, labels)
if err != nil {
logger.Fatal("Failed to initialize telemetry", zap.Error(err))
}
defer tm.Close()
logger = tm.WrapLogger(logger) // Wrap logger with telemetry logger
}
// Verify flags
if *nodeKeyPath == "" {
logger.Fatal("Please specify --nodeKey")
}
if *p2pBootstrap == "" {
logger.Fatal("Please specify --bootstrap")
}
if *permFile == "" {
logger.Fatal("Please specify --permFile")
}
if *ethRPC == "" {
logger.Fatal("Please specify --ethRPC")
}
if *ethContract == "" {
logger.Fatal("Please specify --ethContract")
}
permissions, err := NewPermissions(*permFile)
if err != nil {
logger.Fatal("Failed to load permissions file", zap.String("permFile", *permFile), zap.Error(err))
}
loggingMap := NewLoggingMap()
// Load p2p private key
var priv crypto.PrivKey
priv, err = common.GetOrCreateNodeKey(logger, *nodeKeyPath)
if err != nil {
logger.Fatal("Failed to load node key", zap.Error(err))
}
var signerKey *ecdsa.PrivateKey
if *signerKeyPath != "" {
signerKey, err = common.LoadArmoredKey(*signerKeyPath, CCQ_SERVER_SIGNING_KEY, false)
if err != nil {
logger.Fatal("Failed to loader signer key", zap.Error(err))
}
logger.Info("will sign unsigned requests if api key supports it", zap.Stringer("signingKey", ethCrypto.PubkeyToAddress(signerKey.PublicKey)))
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Run p2p
pendingResponses := NewPendingResponses(logger)
p2p, err := runP2P(ctx, priv, *p2pPort, networkID, *p2pBootstrap, *ethRPC, *ethContract, pendingResponses, logger, *monitorPeers, loggingMap, *gossipAdvertiseAddress)
if err != nil {
logger.Fatal("Failed to start p2p", zap.Error(err))
}
// Start the HTTP server
go func() {
s := NewHTTPServer(*listenAddr, p2p.topic_req, permissions, signerKey, pendingResponses, logger, env, loggingMap)
logger.Sugar().Infof("Server listening on %s", *listenAddr)
err := s.ListenAndServe()
if err != nil && err != http.ErrServerClosed {
logger.Fatal("Server closed unexpectedly", zap.Error(err))
}
}()
// Start the status server
var statServer *statusServer
if *statusAddr != "" {
statServer = NewStatusServer(*statusAddr, logger, env)
go func() {
logger.Sugar().Infof("Status server listening on %s", *statusAddr)
err := statServer.httpServer.ListenAndServe()
if err != nil && err != http.ErrServerClosed {
logger.Fatal("Status server closed unexpectedly", zap.Error(err))
}
}()
}
// Start the Prometheus scraper
usingPromRemoteWrite := *promRemoteURL != ""
if usingPromRemoteWrite {
var info promremotew.PromTelemetryInfo
info.PromRemoteURL = *promRemoteURL
info.Labels = map[string]string{
"node_name": *telemetryNodeName,
"network": *p2pNetworkID,
"version": version.Version(),
"product": "ccq_server",
}
err := RunPrometheusScraper(ctx, logger, info)
if err != nil {
logger.Fatal("Failed to start prometheus scraper", zap.Error(err))
}
}
// Handle SIGTERM
sigterm := make(chan os.Signal, 1)
signal.Notify(sigterm, syscall.SIGTERM)
go func() {
<-sigterm
if statServer != nil && *shutdownDelay1 != 0 {
logger.Info("Received sigterm. disabling health checks and pausing.")
statServer.disableHealth()
time.Sleep(time.Duration(*shutdownDelay1) * time.Second)
numPending := 0
logger.Info("Waiting for any outstanding requests to complete before shutting down.")
for count := 0; count < int(*shutdownDelay2); count++ {
time.Sleep(time.Second)
numPending = pendingResponses.NumPending()
if numPending == 0 {
break
}
}
if numPending == 0 {
logger.Info("Done waiting. shutting down.")
} else {
logger.Error("Gave up waiting for pending requests to finish. shutting down anyway.", zap.Int("numStillPending", numPending))
}
} else {
logger.Info("Received sigterm. exiting.")
}
cancel()
}()
// Start watching for permissions file updates.
errC := make(chan error)
permissions.StartWatcher(ctx, logger, errC)
// Star logging cleanup process.
loggingMap.Start(ctx, logger, errC)
// Wait for either a shutdown or a fatal error from the permissions watcher.
select {
case <-ctx.Done():
logger.Info("Context cancelled, exiting...")
break
case err := <-errC:
logger.Error("Encountered an error, exiting", zap.Error(err))
break
}
// Stop the permissions file watcher.
permissions.StopWatcher()
// Shutdown p2p. Without this the same host won't properly discover peers until some timeout
p2p.sub.Cancel()
if err := p2p.topic_req.Close(); err != nil {
logger.Error("Error closing the request topic", zap.Error(err))
}
if err := p2p.topic_resp.Close(); err != nil {
logger.Error("Error closing the response topic", zap.Error(err))
}
if err := p2p.host.Close(); err != nil {
logger.Error("Error closing the host", zap.Error(err))
}
}