forked from pachyderm/pachyderm
/
main.go
404 lines (377 loc) · 12.2 KB
/
main.go
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package main
import (
"errors"
"fmt"
"net/http"
_ "net/http/pprof"
"os"
"strconv"
"strings"
units "github.com/docker/go-units"
"github.com/pachyderm/pachyderm/src/client"
authclient "github.com/pachyderm/pachyderm/src/client/auth"
eprsclient "github.com/pachyderm/pachyderm/src/client/enterprise"
healthclient "github.com/pachyderm/pachyderm/src/client/health"
pfsclient "github.com/pachyderm/pachyderm/src/client/pfs"
"github.com/pachyderm/pachyderm/src/client/pkg/discovery"
"github.com/pachyderm/pachyderm/src/client/pkg/grpcutil"
"github.com/pachyderm/pachyderm/src/client/pkg/shard"
"github.com/pachyderm/pachyderm/src/client/pkg/uuid"
ppsclient "github.com/pachyderm/pachyderm/src/client/pps"
"github.com/pachyderm/pachyderm/src/client/version"
authserver "github.com/pachyderm/pachyderm/src/server/auth/server"
eprsserver "github.com/pachyderm/pachyderm/src/server/enterprise/server"
"github.com/pachyderm/pachyderm/src/server/health"
pfs_server "github.com/pachyderm/pachyderm/src/server/pfs/server"
cache_pb "github.com/pachyderm/pachyderm/src/server/pkg/cache/groupcachepb"
cache_server "github.com/pachyderm/pachyderm/src/server/pkg/cache/server"
"github.com/pachyderm/pachyderm/src/server/pkg/cmdutil"
"github.com/pachyderm/pachyderm/src/server/pkg/metrics"
"github.com/pachyderm/pachyderm/src/server/pkg/migration"
"github.com/pachyderm/pachyderm/src/server/pkg/netutil"
pps_server "github.com/pachyderm/pachyderm/src/server/pps/server"
log "github.com/sirupsen/logrus"
flag "github.com/spf13/pflag"
"golang.org/x/sync/errgroup"
"google.golang.org/grpc"
"k8s.io/kubernetes/pkg/api"
kube_client "k8s.io/kubernetes/pkg/client/restclient"
kube "k8s.io/kubernetes/pkg/client/unversioned"
)
var mode string
var readinessCheck bool
var migrate string
func init() {
flag.StringVar(&mode, "mode", "full", "Pachd currently supports two modes: full and sidecar. The former includes everything you need in a full pachd node. The later runs only PFS, the Auth service, and a stripped-down version of PPS.")
flag.BoolVar(&readinessCheck, "readiness-check", false, "Set to true when checking if local pod is ready")
flag.StringVar(&migrate, "migrate", "", "Use the format FROM_VERSION-TO_VERSION; e.g. 1.4.8-1.5.0")
flag.Parse()
}
type appEnv struct {
Port uint16 `env:"PORT,default=650"`
NumShards uint64 `env:"NUM_SHARDS,default=32"`
StorageRoot string `env:"PACH_ROOT,default=/pach"`
StorageBackend string `env:"STORAGE_BACKEND,default="`
StorageHostPath string `env:"STORAGE_HOST_PATH,default="`
PPSEtcdPrefix string `env:"PPS_ETCD_PREFIX,default=pachyderm_pps"`
PFSEtcdPrefix string `env:"PFS_ETCD_PREFIX,default=pachyderm_pfs"`
AuthEtcdPrefix string `env:"PACHYDERM_AUTH_ETCD_PREFIX,default=pachyderm_auth"`
EnterpriseEtcdPrefix string `env:"PACHYDERM_ENTERPRISE_ETCD_PREFIX,default=pachyderm_enterprise"`
KubeAddress string `env:"KUBERNETES_PORT_443_TCP_ADDR,required"`
EtcdAddress string `env:"ETCD_PORT_2379_TCP_ADDR,required"`
Namespace string `env:"NAMESPACE,default=default"`
Metrics bool `env:"METRICS,default=true"`
Init bool `env:"INIT,default=false"`
BlockCacheBytes string `env:"BLOCK_CACHE_BYTES,default=1G"`
PFSCacheSize string `env:"PFS_CACHE_SIZE,default=0"`
WorkerImage string `env:"WORKER_IMAGE,default="`
WorkerSidecarImage string `env:"WORKER_SIDECAR_IMAGE,default="`
WorkerImagePullPolicy string `env:"WORKER_IMAGE_PULL_POLICY,default="`
LogLevel string `env:"LOG_LEVEL,default=info"`
}
func main() {
switch mode {
case "full":
cmdutil.Main(doFullMode, &appEnv{})
case "sidecar":
cmdutil.Main(doSidecarMode, &appEnv{})
default:
fmt.Printf("unrecognized mode: %s\n", mode)
}
}
func doSidecarMode(appEnvObj interface{}) error {
go func() {
log.Println(http.ListenAndServe(":651", nil))
}()
appEnv := appEnvObj.(*appEnv)
switch appEnv.LogLevel {
case "debug":
log.SetLevel(log.DebugLevel)
case "info":
log.SetLevel(log.InfoLevel)
case "error":
log.SetLevel(log.ErrorLevel)
default:
log.Errorf("Unrecognized log level %s, falling back to default of \"info\"", appEnv.LogLevel)
log.SetLevel(log.InfoLevel)
}
etcdAddress := fmt.Sprintf("http://%s:2379", appEnv.EtcdAddress)
etcdClient := getEtcdClient(etcdAddress)
clusterID, err := getClusterID(etcdClient)
if err != nil {
return err
}
kubeClient, err := getKubeClient(appEnv)
if err != nil {
return err
}
var reporter *metrics.Reporter
if appEnv.Metrics {
reporter = metrics.NewReporter(clusterID, kubeClient)
}
address, err := netutil.ExternalIP()
if err != nil {
return err
}
address = fmt.Sprintf("%s:%d", address, appEnv.Port)
pfsCacheSize, err := strconv.Atoi(appEnv.PFSCacheSize)
if err != nil {
return err
}
pfsAPIServer, err := pfs_server.NewAPIServer(address, []string{etcdAddress}, appEnv.PFSEtcdPrefix, int64(pfsCacheSize))
if err != nil {
return err
}
ppsAPIServer, err := pps_server.NewSidecarAPIServer(
etcdAddress,
appEnv.PPSEtcdPrefix,
address,
reporter,
)
if err != nil {
return err
}
blockCacheBytes, err := units.RAMInBytes(appEnv.BlockCacheBytes)
if err != nil {
return err
}
blockAPIServer, err := pfs_server.NewBlockAPIServer(appEnv.StorageRoot, blockCacheBytes, appEnv.StorageBackend, etcdAddress)
if err != nil {
return err
}
healthServer := health.NewHealthServer()
authAPIServer, err := authserver.NewAuthServer(address, etcdAddress, appEnv.AuthEtcdPrefix)
if err != nil {
return err
}
enterpriseAPIServer, err := eprsserver.NewEnterpriseServer(etcdAddress, appEnv.EnterpriseEtcdPrefix)
if err != nil {
return err
}
return grpcutil.Serve(
func(s *grpc.Server) {
pfsclient.RegisterAPIServer(s, pfsAPIServer)
pfsclient.RegisterObjectAPIServer(s, blockAPIServer)
ppsclient.RegisterAPIServer(s, ppsAPIServer)
healthclient.RegisterHealthServer(s, healthServer)
authclient.RegisterAPIServer(s, authAPIServer)
eprsclient.RegisterAPIServer(s, enterpriseAPIServer)
},
grpcutil.ServeOptions{
Version: version.Version,
MaxMsgSize: grpcutil.MaxMsgSize,
},
grpcutil.ServeEnv{
GRPCPort: appEnv.Port,
},
)
}
func doFullMode(appEnvObj interface{}) error {
appEnv := appEnvObj.(*appEnv)
if migrate != "" {
parts := strings.Split(migrate, "-")
if len(parts) != 2 {
return fmt.Errorf("the migration flag needs to be of the format FROM_VERSION-TO_VERSION; e.g. 1.4.8-1.5.0")
}
if err := migration.Run(appEnv.EtcdAddress, appEnv.PFSEtcdPrefix, appEnv.PPSEtcdPrefix, parts[0], parts[1]); err != nil {
return fmt.Errorf("error from migration: %v", err)
}
return nil
}
go func() {
log.Println(http.ListenAndServe(":651", nil))
}()
switch appEnv.LogLevel {
case "debug":
log.SetLevel(log.DebugLevel)
case "info":
log.SetLevel(log.InfoLevel)
case "error":
log.SetLevel(log.ErrorLevel)
default:
log.Errorf("Unrecognized log level %s, falling back to default of \"info\"", appEnv.LogLevel)
log.SetLevel(log.InfoLevel)
}
etcdAddress := fmt.Sprintf("http://%s:2379", appEnv.EtcdAddress)
etcdClient := getEtcdClient(etcdAddress)
if readinessCheck {
c, err := client.NewFromAddress("127.0.0.1:650")
if err != nil {
return err
}
// We want to use a PPS API instead of a PFS API because PFS APIs
// typically talk to every node, but the point of the readiness probe
// is that it checks to see if this particular node is functioning,
// and removing it from the service if it's not. So if we use a PFS
// API such as ListRepo for readiness probe, then the failure of any
// node will result in the failures of all readiness probes, causing
// all nodes to be removed from the pachd service.
_, err = c.ListPipeline()
if err != nil {
return err
}
os.Exit(0)
return nil
}
clusterID, err := getClusterID(etcdClient)
if err != nil {
return err
}
kubeClient, err := getKubeClient(appEnv)
if err != nil {
return err
}
var reporter *metrics.Reporter
if appEnv.Metrics {
reporter = metrics.NewReporter(clusterID, kubeClient)
}
address, err := netutil.ExternalIP()
if err != nil {
return err
}
address = fmt.Sprintf("%s:%d", address, appEnv.Port)
sharder := shard.NewSharder(
etcdClient,
appEnv.NumShards,
appEnv.Namespace,
)
go func() {
if err := sharder.AssignRoles(address, nil); err != nil {
log.Printf("error from sharder.AssignRoles: %s", sanitizeErr(err))
}
}()
pfsCacheSize, err := strconv.Atoi(appEnv.PFSCacheSize)
if err != nil {
return err
}
router := shard.NewRouter(
sharder,
grpcutil.NewDialer(
grpc.WithInsecure(),
),
address,
)
cacheServer := cache_server.NewCacheServer(router, appEnv.NumShards)
pfsAPIServer, err := pfs_server.NewAPIServer(address, []string{etcdAddress}, appEnv.PFSEtcdPrefix, int64(pfsCacheSize))
if err != nil {
return err
}
ppsAPIServer, err := pps_server.NewAPIServer(
etcdAddress,
appEnv.PPSEtcdPrefix,
address,
kubeClient,
getNamespace(),
appEnv.WorkerImage,
appEnv.WorkerSidecarImage,
appEnv.WorkerImagePullPolicy,
appEnv.StorageRoot,
appEnv.StorageBackend,
appEnv.StorageHostPath,
reporter,
)
if err != nil {
return err
}
go func() {
if err := sharder.RegisterFrontends(nil, address, []shard.Frontend{cacheServer}); err != nil {
log.Printf("error from sharder.RegisterFrontend %s", sanitizeErr(err))
}
}()
go func() {
if err := sharder.Register(nil, address, []shard.Server{cacheServer}); err != nil {
log.Printf("error from sharder.Register %s", sanitizeErr(err))
}
}()
blockCacheBytes, err := units.RAMInBytes(appEnv.BlockCacheBytes)
if err != nil {
return err
}
blockAPIServer, err := pfs_server.NewBlockAPIServer(appEnv.StorageRoot, blockCacheBytes, appEnv.StorageBackend, etcdAddress)
if err != nil {
return err
}
authAPIServer, err := authserver.NewAuthServer(address, etcdAddress, appEnv.AuthEtcdPrefix)
if err != nil {
return err
}
enterpriseAPIServer, err := eprsserver.NewEnterpriseServer(etcdAddress, appEnv.EnterpriseEtcdPrefix)
if err != nil {
return err
}
healthServer := health.NewHealthServer()
httpServer, err := pfs_server.NewHTTPServer(address, []string{etcdAddress}, appEnv.PFSEtcdPrefix, blockCacheBytes)
if err != nil {
return err
}
var eg errgroup.Group
eg.Go(func() error {
return http.ListenAndServe(fmt.Sprintf(":%v", pfs_server.HTTPPort), httpServer)
})
eg.Go(func() error {
return grpcutil.Serve(
func(s *grpc.Server) {
healthclient.RegisterHealthServer(s, healthServer)
pfsclient.RegisterAPIServer(s, pfsAPIServer)
pfsclient.RegisterObjectAPIServer(s, blockAPIServer)
ppsclient.RegisterAPIServer(s, ppsAPIServer)
cache_pb.RegisterGroupCacheServer(s, cacheServer)
authclient.RegisterAPIServer(s, authAPIServer)
eprsclient.RegisterAPIServer(s, enterpriseAPIServer)
},
grpcutil.ServeOptions{
Version: version.Version,
MaxMsgSize: grpcutil.MaxMsgSize,
},
grpcutil.ServeEnv{
GRPCPort: appEnv.Port,
},
)
})
return eg.Wait()
}
func getEtcdClient(etcdAddress string) discovery.Client {
return discovery.NewEtcdClient(etcdAddress)
}
const clusterIDKey = "cluster-id"
func getClusterID(client discovery.Client) (string, error) {
id, err := client.Get(clusterIDKey)
// if it's a key not found error then we create the key
if err != nil && strings.Contains(err.Error(), "not found") {
// This might error if it races with another pachd trying to set the
// cluster id so we ignore the error.
client.Set(clusterIDKey, uuid.NewWithoutDashes(), 0)
} else if err != nil {
return "", err
} else {
return id, nil
}
return client.Get(clusterIDKey)
}
func getKubeClient(env *appEnv) (*kube.Client, error) {
kubeClient, err := kube.NewInCluster()
if err != nil {
log.Errorf("falling back to insecure kube client due to error from NewInCluster: %s", sanitizeErr(err))
} else {
return kubeClient, err
}
config := &kube_client.Config{
Host: fmt.Sprintf("%s:443", env.KubeAddress),
Insecure: true,
}
return kube.New(config)
}
// getNamespace returns the kubernetes namespace that this pachd pod runs in
func getNamespace() string {
namespace := os.Getenv("PACHD_POD_NAMESPACE")
if namespace != "" {
return namespace
}
return api.NamespaceDefault
}
func sanitizeErr(err error) error {
if err == nil {
return nil
}
return errors.New(grpc.ErrorDesc(err))
}