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package weed_server
import (
"context"
"fmt"
"net/http"
"os"
"sync"
"time"
"google.golang.org/grpc"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb"
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
"github.com/chrislusf/seaweedfs/weed/stats"
"github.com/chrislusf/seaweedfs/weed/util"
"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/mysql"
_ "github.com/chrislusf/seaweedfs/weed/filer2/postgres"
_ "github.com/chrislusf/seaweedfs/weed/filer2/redis"
_ "github.com/chrislusf/seaweedfs/weed/filer2/redis2"
"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"
)
type FilerOption struct {
Masters []string
Collection string
DefaultReplication string
DisableDirListing bool
MaxMB int
DirListingLimit int
DataCenter string
DefaultLevelDbDir string
DisableHttp bool
Host string
Port uint32
recursiveDelete bool
Cipher bool
}
type FilerServer struct {
option *FilerOption
secret security.SigningKey
filer *filer2.Filer
grpcDialOption grpc.DialOption
// notifying clients
listenersLock sync.Mutex
listenersCond *sync.Cond
}
func NewFilerServer(defaultMux, readonlyMux *http.ServeMux, option *FilerOption) (fs *FilerServer, err error) {
fs = &FilerServer{
option: option,
grpcDialOption: security.LoadClientTLS(util.GetViper(), "grpc.filer"),
}
fs.listenersCond = sync.NewCond(&fs.listenersLock)
if len(option.Masters) == 0 {
glog.Fatal("master list is required!")
}
fs.filer = filer2.NewFiler(option.Masters, fs.grpcDialOption, option.Host, option.Port, option.Collection, option.DefaultReplication, fs.notifyMetaListeners)
fs.filer.Cipher = option.Cipher
maybeStartMetrics(fs, option)
go fs.filer.KeepConnectedToMaster()
v := util.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.option.recursiveDelete = v.GetBool("filer.options.recursive_delete")
v.SetDefault("filer.options.buckets_folder", "/buckets")
fs.filer.DirBucketsPath = v.GetString("filer.options.buckets_folder")
fs.filer.FsyncBuckets = v.GetStringSlice("filer.options.buckets_fsync")
fs.filer.LoadConfiguration(v)
notification.LoadConfiguration(v, "notification.")
handleStaticResources(defaultMux)
if !option.DisableHttp {
defaultMux.HandleFunc("/", fs.filerHandler)
}
if defaultMux != readonlyMux {
readonlyMux.HandleFunc("/", fs.readonlyFilerHandler)
}
fs.filer.LoadBuckets()
util.OnInterrupt(func() {
fs.filer.Shutdown()
})
return fs, nil
}
func maybeStartMetrics(fs *FilerServer, option *FilerOption) {
for _, master := range option.Masters {
_, err := pb.ParseFilerGrpcAddress(master)
if err != nil {
glog.Fatalf("invalid master address %s: %v", master, err)
}
}
isConnected := false
var metricsAddress string
var metricsIntervalSec int
var readErr error
for !isConnected {
for _, master := range option.Masters {
metricsAddress, metricsIntervalSec, readErr = readFilerConfiguration(fs.grpcDialOption, master)
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, masterAddress string) (metricsAddress string, metricsIntervalSec int, err error) {
err = operation.WithMasterServerClient(masterAddress, 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", masterAddress, err)
}
metricsAddress, metricsIntervalSec = resp.MetricsAddress, int(resp.MetricsIntervalSeconds)
return nil
})
return
}
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