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package weed_server
import ( "context" "fmt" "net/http" "os" "time"
"github.com/chrislusf/seaweedfs/weed/operation" "github.com/chrislusf/seaweedfs/weed/pb/master_pb" "github.com/chrislusf/seaweedfs/weed/stats" "github.com/chrislusf/seaweedfs/weed/util" "google.golang.org/grpc"
"github.com/chrislusf/seaweedfs/weed/filer2" _ "github.com/chrislusf/seaweedfs/weed/filer2/cassandra" _ "github.com/chrislusf/seaweedfs/weed/filer2/etcd" _ "github.com/chrislusf/seaweedfs/weed/filer2/leveldb" _ "github.com/chrislusf/seaweedfs/weed/filer2/leveldb2" _ "github.com/chrislusf/seaweedfs/weed/filer2/memdb" _ "github.com/chrislusf/seaweedfs/weed/filer2/mysql" _ "github.com/chrislusf/seaweedfs/weed/filer2/postgres" _ "github.com/chrislusf/seaweedfs/weed/filer2/redis" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/notification" _ "github.com/chrislusf/seaweedfs/weed/notification/aws_sqs" _ "github.com/chrislusf/seaweedfs/weed/notification/gocdk_pub_sub" _ "github.com/chrislusf/seaweedfs/weed/notification/google_pub_sub" _ "github.com/chrislusf/seaweedfs/weed/notification/kafka" _ "github.com/chrislusf/seaweedfs/weed/notification/log" "github.com/chrislusf/seaweedfs/weed/security" "github.com/spf13/viper" )
type FilerOption struct { Masters []string Collection string DefaultReplication string RedirectOnRead bool DisableDirListing bool MaxMB int DirListingLimit int DataCenter string DefaultLevelDbDir string DisableHttp bool Port int }
type FilerServer struct { option *FilerOption secret security.SigningKey filer *filer2.Filer grpcDialOption grpc.DialOption }
func NewFilerServer(defaultMux, readonlyMux *http.ServeMux, option *FilerOption) (fs *FilerServer, err error) {
fs = &FilerServer{ option: option, grpcDialOption: security.LoadClientTLS(viper.Sub("grpc"), "filer"), }
if len(option.Masters) == 0 { glog.Fatal("master list is required!") }
fs.filer = filer2.NewFiler(option.Masters, fs.grpcDialOption)
go fs.filer.KeepConnectedToMaster()
v := viper.GetViper() if !util.LoadConfiguration("filer", false) { v.Set("leveldb2.enabled", true) v.Set("leveldb2.dir", option.DefaultLevelDbDir) _, err := os.Stat(option.DefaultLevelDbDir) if os.IsNotExist(err) { os.MkdirAll(option.DefaultLevelDbDir, 0755) } } util.LoadConfiguration("notification", false)
fs.filer.LoadConfiguration(v)
notification.LoadConfiguration(v.Sub("notification"))
handleStaticResources(defaultMux) if !option.DisableHttp { defaultMux.HandleFunc("/", fs.filerHandler) } if defaultMux != readonlyMux { readonlyMux.HandleFunc("/", fs.readonlyFilerHandler) }
maybeStartMetrics(fs, option)
return fs, nil }
func maybeStartMetrics(fs *FilerServer, option *FilerOption) { isConnected := false var metricsAddress string var metricsIntervalSec int var readErr error for !isConnected { metricsAddress, metricsIntervalSec, readErr = readFilerConfiguration(fs.grpcDialOption, option.Masters[0]) if readErr == nil { isConnected = true } else { time.Sleep(7 * time.Second) } } if metricsAddress == "" && metricsIntervalSec <= 0 { return } go stats.LoopPushingMetric("filer", stats.SourceName(option.Port), stats.FilerGather, func() (addr string, intervalSeconds int) { return metricsAddress, metricsIntervalSec }) }
func readFilerConfiguration(grpcDialOption grpc.DialOption, masterGrpcAddress string) (metricsAddress string, metricsIntervalSec int, err error) { err = operation.WithMasterServerClient(masterGrpcAddress, grpcDialOption, func(masterClient master_pb.SeaweedClient) error { resp, err := masterClient.GetMasterConfiguration(context.Background(), &master_pb.GetMasterConfigurationRequest{}) if err != nil { return fmt.Errorf("get master %s configuration: %v", masterGrpcAddress, err) } metricsAddress, metricsIntervalSec = resp.MetricsAddress, int(resp.MetricsIntervalSeconds) return nil }) return }
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