/
main.go
278 lines (256 loc) · 8.93 KB
/
main.go
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package main
import (
"errors"
"fmt"
"net/http"
_ "net/http/pprof"
"os"
"github.com/pachyderm/pachyderm/src/client"
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"
"github.com/pachyderm/pachyderm/src/server/health"
pfs_persist "github.com/pachyderm/pachyderm/src/server/pfs/db"
"github.com/pachyderm/pachyderm/src/server/pfs/drive"
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/metrics"
"github.com/pachyderm/pachyderm/src/server/pkg/netutil"
ppsserver "github.com/pachyderm/pachyderm/src/server/pps"
"github.com/pachyderm/pachyderm/src/server/pps/persist"
persist_server "github.com/pachyderm/pachyderm/src/server/pps/persist/server"
pps_server "github.com/pachyderm/pachyderm/src/server/pps/server"
flag "github.com/spf13/pflag"
"go.pedge.io/env"
"go.pedge.io/lion"
"go.pedge.io/lion/proto"
"go.pedge.io/proto/server"
"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 readinessCheck bool
var migrate string
func init() {
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. 1.2.4-1.3.0")
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="`
DatabaseAddress string `env:"RETHINK_PORT_28015_TCP_ADDR,required"`
PPSDatabaseName string `env:"DATABASE_NAME,default=pachyderm_pps"`
PFSDatabaseName string `env:"DATABASE_NAME,default=pachyderm_pfs"`
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 int64 `env:"BLOCK_CACHE_BYTES,default=1073741824"` //default = 1 gigabyte
JobShimImage string `env:"JOB_SHIM_IMAGE,default="`
JobImagePullPolicy string `env:"JOB_IMAGE_PULL_POLICY,default="`
LogLevel string `env:"LOG_LEVEL,default=info"`
}
func main() {
env.Main(do, &appEnv{})
}
func do(appEnvObj interface{}) error {
go func() {
lion.Println(http.ListenAndServe(":651", nil))
}()
appEnv := appEnvObj.(*appEnv)
switch appEnv.LogLevel {
case "debug":
lion.SetLevel(lion.LevelDebug)
case "info":
lion.SetLevel(lion.LevelInfo)
case "error":
lion.SetLevel(lion.LevelError)
default:
lion.Errorf("Unrecognized log level %s, falling back to default of \"info\"", appEnv.LogLevel)
lion.SetLevel(lion.LevelInfo)
}
etcdClient := getEtcdClient(appEnv)
rethinkAddress := fmt.Sprintf("%s:28015", appEnv.DatabaseAddress)
if appEnv.Init {
if err := setClusterID(etcdClient); err != nil {
return fmt.Errorf("error connecting to etcd, if this error persists it likely indicates that kubernetes services are not working correctly. See https://github.com/pachyderm/pachyderm/blob/master/SETUP.md#pachd-or-pachd-init-crash-loop-with-error-connecting-to-etcd for more info")
}
if err := persist_server.InitDBs(rethinkAddress, appEnv.PPSDatabaseName); err != nil {
return err
}
return pfs_persist.InitDB(rethinkAddress, appEnv.PFSDatabaseName)
}
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
}
if migrate != "" {
return persist_server.Migrate(rethinkAddress, appEnv.PPSDatabaseName, migrate)
}
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, rethinkAddress, appEnv.PFSDatabaseName, appEnv.PPSDatabaseName)
}
rethinkAPIServer, err := getRethinkAPIServer(appEnv)
if err != nil {
return err
}
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 {
protolion.Printf("error from sharder.AssignRoles: %s", sanitizeErr(err))
}
}()
driver, err := getPFSDriver(address, appEnv)
// driver, err := drive.NewDriver(address)
if err != nil {
return err
}
router := shard.NewRouter(
sharder,
grpcutil.NewDialer(
grpc.WithInsecure(),
),
address,
)
cacheServer := cache_server.NewCacheServer(router, appEnv.NumShards)
go func() {
if err := sharder.RegisterFrontends(nil, address, []shard.Frontend{cacheServer}); err != nil {
protolion.Printf("error from sharder.RegisterFrontend %s", sanitizeErr(err))
}
}()
apiServer := pfs_server.NewAPIServer(driver, reporter)
ppsAPIServer := pps_server.NewAPIServer(
ppsserver.NewHasher(appEnv.NumShards, appEnv.NumShards),
address,
kubeClient,
getNamespace(),
appEnv.JobShimImage,
appEnv.JobImagePullPolicy,
reporter,
)
go func() {
if err := sharder.Register(nil, address, []shard.Server{ppsAPIServer, cacheServer}); err != nil {
protolion.Printf("error from sharder.Register %s", sanitizeErr(err))
}
}()
blockAPIServer, err := pfs_server.NewBlockAPIServer(appEnv.StorageRoot, appEnv.BlockCacheBytes, appEnv.StorageBackend)
if err != nil {
return err
}
healthServer := health.NewHealthServer()
return protoserver.Serve(
func(s *grpc.Server) {
pfsclient.RegisterAPIServer(s, apiServer)
pfsclient.RegisterBlockAPIServer(s, blockAPIServer)
ppsclient.RegisterAPIServer(s, ppsAPIServer)
ppsserver.RegisterInternalPodAPIServer(s, ppsAPIServer)
persist.RegisterAPIServer(s, rethinkAPIServer)
cache_pb.RegisterGroupCacheServer(s, cacheServer)
healthclient.RegisterHealthServer(s, healthServer)
},
protoserver.ServeOptions{
Version: version.Version,
},
protoserver.ServeEnv{
GRPCPort: appEnv.Port,
},
)
}
func getEtcdClient(env *appEnv) discovery.Client {
return discovery.NewEtcdClient(fmt.Sprintf("http://%s:2379", env.EtcdAddress))
}
const clusterIDKey = "cluster-id"
func setClusterID(client discovery.Client) error {
return client.Set(clusterIDKey, uuid.NewWithoutDashes(), 0)
}
func getClusterID(client discovery.Client) (string, error) {
id, err := client.Get(clusterIDKey)
if err != nil {
return "", err
}
if id == "" {
return "", fmt.Errorf("clusterID not yet set")
}
return id, nil
}
func getKubeClient(env *appEnv) (*kube.Client, error) {
kubeClient, err := kube.NewInCluster()
if err != nil {
protolion.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)
}
func getPFSDriver(address string, env *appEnv) (drive.Driver, error) {
rethinkAddress := fmt.Sprintf("%s:28015", env.DatabaseAddress)
return pfs_persist.NewDriver(address, rethinkAddress, env.PFSDatabaseName)
}
func getRethinkAPIServer(env *appEnv) (persist.APIServer, error) {
if err := persist_server.CheckDBs(fmt.Sprintf("%s:28015", env.DatabaseAddress), env.PPSDatabaseName); err != nil {
return nil, err
}
return persist_server.NewRethinkAPIServer(fmt.Sprintf("%s:28015", env.DatabaseAddress), env.PPSDatabaseName)
}
// 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))
}