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package filer
import (
"bytes"
"context"
"fmt"
"io"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/wdclient"
"google.golang.org/grpc"
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/util"
"github.com/viant/ptrie"
jsonpb "google.golang.org/protobuf/encoding/protojson"
)
const (
DirectoryEtcRoot = "/etc/"
DirectoryEtcSeaweedFS = "/etc/seaweedfs"
DirectoryEtcRemote = "/etc/remote"
FilerConfName = "filer.conf"
IamConfigDirectory = "/etc/iam"
IamIdentityFile = "identity.json"
IamPoliciesFile = "policies.json"
)
type FilerConf struct {
rules ptrie.Trie[*filer_pb.FilerConf_PathConf]
}
func ReadFilerConf(filerGrpcAddress pb.ServerAddress, grpcDialOption grpc.DialOption, masterClient *wdclient.MasterClient) (*FilerConf, error) {
return ReadFilerConfFromFilers([]pb.ServerAddress{filerGrpcAddress}, grpcDialOption, masterClient)
}
// ReadFilerConfFromFilers reads filer configuration with multi-filer failover support
func ReadFilerConfFromFilers(filerGrpcAddresses []pb.ServerAddress, grpcDialOption grpc.DialOption, masterClient *wdclient.MasterClient) (*FilerConf, error) {
var data []byte
if err := pb.WithOneOfGrpcFilerClients(false, filerGrpcAddresses, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
if masterClient != nil {
var buf bytes.Buffer
if err := ReadEntry(masterClient, client, DirectoryEtcSeaweedFS, FilerConfName, &buf); err != nil {
return err
}
data = buf.Bytes()
return nil
}
content, err := ReadInsideFiler(client, DirectoryEtcSeaweedFS, FilerConfName)
if err != nil {
return err
}
data = content
return nil
}); err != nil && err != filer_pb.ErrNotFound {
return nil, fmt.Errorf("read %s/%s: %v", DirectoryEtcSeaweedFS, FilerConfName, err)
}
fc := NewFilerConf()
if len(data) > 0 {
if err := fc.LoadFromBytes(data); err != nil {
return nil, fmt.Errorf("parse %s/%s: %v", DirectoryEtcSeaweedFS, FilerConfName, err)
}
}
return fc, nil
}
func NewFilerConf() (fc *FilerConf) {
fc = &FilerConf{
rules: ptrie.New[*filer_pb.FilerConf_PathConf](),
}
return fc
}
func (fc *FilerConf) loadFromFiler(filer *Filer) (err error) {
filerConfPath := util.NewFullPath(DirectoryEtcSeaweedFS, FilerConfName)
entry, err := filer.FindEntry(context.Background(), filerConfPath)
if err != nil {
if err == filer_pb.ErrNotFound {
return nil
}
glog.Errorf("read filer conf entry %s: %v", filerConfPath, err)
return
}
if len(entry.Content) > 0 {
return fc.LoadFromBytes(entry.Content)
}
return fc.loadFromChunks(filer, entry.Content, entry.GetChunks(), entry.Size())
}
func (fc *FilerConf) loadFromChunks(filer *Filer, content []byte, chunks []*filer_pb.FileChunk, size uint64) (err error) {
if len(content) == 0 {
content, err = filer.readEntry(chunks, size)
if err != nil {
glog.Errorf("read filer conf content: %v", err)
return
}
}
return fc.LoadFromBytes(content)
}
func (fc *FilerConf) LoadFromBytes(data []byte) (err error) {
conf := &filer_pb.FilerConf{}
if err := jsonpb.Unmarshal(data, conf); err != nil {
return err
}
return fc.doLoadConf(conf)
}
func (fc *FilerConf) doLoadConf(conf *filer_pb.FilerConf) (err error) {
for _, location := range conf.Locations {
err = fc.SetLocationConf(location)
if err != nil {
// this is not recoverable
return nil
}
}
return nil
}
func (fc *FilerConf) GetLocationConf(locationPrefix string) (locConf *filer_pb.FilerConf_PathConf, found bool) {
return fc.rules.Get([]byte(locationPrefix))
}
func (fc *FilerConf) SetLocationConf(locConf *filer_pb.FilerConf_PathConf) (err error) {
err = fc.rules.Put([]byte(locConf.LocationPrefix), locConf)
if err != nil {
glog.Errorf("put location prefix: %v", err)
}
return
}
func (fc *FilerConf) AddLocationConf(locConf *filer_pb.FilerConf_PathConf) (err error) {
existingConf, found := fc.rules.Get([]byte(locConf.LocationPrefix))
if found {
mergePathConf(existingConf, locConf)
locConf = existingConf
}
err = fc.rules.Put([]byte(locConf.LocationPrefix), locConf)
if err != nil {
glog.Errorf("put location prefix: %v", err)
}
return
}
func (fc *FilerConf) DeleteLocationConf(locationPrefix string) {
rules := ptrie.New[*filer_pb.FilerConf_PathConf]()
fc.rules.Walk(func(key []byte, value *filer_pb.FilerConf_PathConf) bool {
if string(key) == locationPrefix {
return true
}
key = bytes.Clone(key)
_ = rules.Put(key, value)
return true
})
fc.rules = rules
return
}
func (fc *FilerConf) MatchStorageRule(path string) (pathConf *filer_pb.FilerConf_PathConf) {
pathConf = &filer_pb.FilerConf_PathConf{}
fc.rules.MatchPrefix([]byte(path), func(key []byte, value *filer_pb.FilerConf_PathConf) bool {
mergePathConf(pathConf, value)
return true
})
return pathConf
}
func (fc *FilerConf) GetCollectionTtls(collection string) (ttls map[string]string) {
ttls = make(map[string]string)
fc.rules.Walk(func(key []byte, value *filer_pb.FilerConf_PathConf) bool {
if value.Collection == collection {
ttls[value.LocationPrefix] = value.GetTtl()
}
return true
})
return ttls
}
// merge if values in b is not empty, merge them into a
func mergePathConf(a, b *filer_pb.FilerConf_PathConf) {
a.Collection = util.Nvl(b.Collection, a.Collection)
a.Replication = util.Nvl(b.Replication, a.Replication)
a.Ttl = util.Nvl(b.Ttl, a.Ttl)
a.DiskType = util.Nvl(b.DiskType, a.DiskType)
a.Fsync = b.Fsync || a.Fsync
if b.VolumeGrowthCount > 0 {
a.VolumeGrowthCount = b.VolumeGrowthCount
}
a.ReadOnly = b.ReadOnly || a.ReadOnly
if b.MaxFileNameLength > 0 {
a.MaxFileNameLength = b.MaxFileNameLength
}
a.DataCenter = util.Nvl(b.DataCenter, a.DataCenter)
a.Rack = util.Nvl(b.Rack, a.Rack)
a.DataNode = util.Nvl(b.DataNode, a.DataNode)
a.DisableChunkDeletion = b.DisableChunkDeletion || a.DisableChunkDeletion
a.Worm = b.Worm || a.Worm
if b.WormRetentionTimeSeconds > 0 {
a.WormRetentionTimeSeconds = b.WormRetentionTimeSeconds
}
if b.WormGracePeriodSeconds > 0 {
a.WormGracePeriodSeconds = b.WormGracePeriodSeconds
}
}
func (fc *FilerConf) ToProto() *filer_pb.FilerConf {
m := &filer_pb.FilerConf{}
fc.rules.Walk(func(key []byte, value *filer_pb.FilerConf_PathConf) bool {
m.Locations = append(m.Locations, value)
return true
})
return m
}
func (fc *FilerConf) ToText(writer io.Writer) error {
return ProtoToText(writer, fc.ToProto())
}
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