1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
package weed_server
import (
"context"
"fmt"
"strings"
"sync"
"time"
"github.com/chrislusf/seaweedfs/weed/filer"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/pb/remote_pb"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/golang/protobuf/proto"
)
func (fs *FilerServer) CacheRemoteObjectToLocalCluster(ctx context.Context, req *filer_pb.CacheRemoteObjectToLocalClusterRequest) (*filer_pb.CacheRemoteObjectToLocalClusterResponse, error) {
// load all mappings
mappingEntry, err := fs.filer.FindEntry(ctx, util.JoinPath(filer.DirectoryEtcRemote, filer.REMOTE_STORAGE_MOUNT_FILE))
if err != nil {
return nil, err
}
mappings, err := filer.UnmarshalRemoteStorageMappings(mappingEntry.Content)
if err != nil {
return nil, err
}
// find mapping
var remoteStorageMountedLocation *remote_pb.RemoteStorageLocation
var localMountedDir string
for k, loc := range mappings.Mappings {
if strings.HasPrefix(req.Directory, k) {
localMountedDir, remoteStorageMountedLocation = k, loc
}
}
if localMountedDir == "" {
return nil, fmt.Errorf("%s is not mounted", req.Directory)
}
// find storage configuration
storageConfEntry, err := fs.filer.FindEntry(ctx, util.JoinPath(filer.DirectoryEtcRemote, remoteStorageMountedLocation.Name+filer.REMOTE_STORAGE_CONF_SUFFIX))
if err != nil {
return nil, err
}
storageConf := &remote_pb.RemoteConf{}
if unMarshalErr := proto.Unmarshal(storageConfEntry.Content, storageConf); unMarshalErr != nil {
return nil, fmt.Errorf("unmarshal remote storage conf %s/%s: %v", filer.DirectoryEtcRemote, remoteStorageMountedLocation.Name+filer.REMOTE_STORAGE_CONF_SUFFIX, unMarshalErr)
}
// find the entry
entry, err := fs.filer.FindEntry(ctx, util.JoinPath(req.Directory, req.Name))
if err == filer_pb.ErrNotFound {
return nil, err
}
resp := &filer_pb.CacheRemoteObjectToLocalClusterResponse{}
if entry.Remote == nil || entry.Remote.RemoteSize == 0 {
return resp, nil
}
// detect storage option
so, err := fs.detectStorageOption(req.Directory, "", "", 0, "", "", "", "")
if err != nil {
return resp, err
}
assignRequest, altRequest := so.ToAssignRequests(1)
// find a good chunk size
chunkSize := int64(5 * 1024 * 1024)
chunkCount := entry.Remote.RemoteSize/chunkSize + 1
for chunkCount > 1000 && chunkSize < int64(fs.option.MaxMB)*1024*1024/2 {
chunkSize *= 2
chunkCount = entry.Remote.RemoteSize/chunkSize + 1
}
dest := util.FullPath(remoteStorageMountedLocation.Path).Child(string(util.FullPath(req.Directory).Child(req.Name))[len(localMountedDir):])
var chunks []*filer_pb.FileChunk
var fetchAndWriteErr error
var wg sync.WaitGroup
limitedConcurrentExecutor := util.NewLimitedConcurrentExecutor(8)
for offset := int64(0); offset < entry.Remote.RemoteSize; offset += chunkSize {
localOffset := offset
wg.Add(1)
limitedConcurrentExecutor.Execute(func() {
defer wg.Done()
size := chunkSize
if localOffset+chunkSize > entry.Remote.RemoteSize {
size = entry.Remote.RemoteSize - localOffset
}
// assign one volume server
assignResult, err := operation.Assign(fs.filer.GetMaster, fs.grpcDialOption, assignRequest, altRequest)
if err != nil {
fetchAndWriteErr = err
return
}
if assignResult.Error != "" {
fetchAndWriteErr = fmt.Errorf("assign: %v", assignResult.Error)
return
}
fileId, parseErr := needle.ParseFileIdFromString(assignResult.Fid)
if assignResult.Error != "" {
fetchAndWriteErr = fmt.Errorf("unrecognized file id %s: %v", assignResult.Fid, parseErr)
return
}
var replicas []*volume_server_pb.FetchAndWriteNeedleRequest_Replica
for _, r := range assignResult.Replicas {
replicas = append(replicas, &volume_server_pb.FetchAndWriteNeedleRequest_Replica{
Url: r.Url,
PublicUrl: r.PublicUrl,
GrpcPort: int32(r.GrpcPort),
})
}
// tell filer to tell volume server to download into needles
assignedServerAddress := pb.NewServerAddressWithGrpcPort(assignResult.Url, assignResult.GrpcPort)
err = operation.WithVolumeServerClient(false, assignedServerAddress, fs.grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
_, fetchAndWriteErr := volumeServerClient.FetchAndWriteNeedle(context.Background(), &volume_server_pb.FetchAndWriteNeedleRequest{
VolumeId: uint32(fileId.VolumeId),
NeedleId: uint64(fileId.Key),
Cookie: uint32(fileId.Cookie),
Offset: localOffset,
Size: size,
Replicas: replicas,
Auth: string(assignResult.Auth),
RemoteConf: storageConf,
RemoteLocation: &remote_pb.RemoteStorageLocation{
Name: remoteStorageMountedLocation.Name,
Bucket: remoteStorageMountedLocation.Bucket,
Path: string(dest),
},
})
if fetchAndWriteErr != nil {
return fmt.Errorf("volume server %s fetchAndWrite %s: %v", assignResult.Url, dest, fetchAndWriteErr)
}
return nil
})
if err != nil && fetchAndWriteErr == nil {
fetchAndWriteErr = err
return
}
chunks = append(chunks, &filer_pb.FileChunk{
FileId: assignResult.Fid,
Offset: localOffset,
Size: uint64(size),
Mtime: time.Now().Unix(),
Fid: &filer_pb.FileId{
VolumeId: uint32(fileId.VolumeId),
FileKey: uint64(fileId.Key),
Cookie: uint32(fileId.Cookie),
},
})
})
}
wg.Wait()
if fetchAndWriteErr != nil {
return nil, fetchAndWriteErr
}
garbage := entry.Chunks
newEntry := entry.ShallowClone()
newEntry.Chunks = chunks
newEntry.Remote = proto.Clone(entry.Remote).(*filer_pb.RemoteEntry)
newEntry.Remote.LastLocalSyncTsNs = time.Now().UnixNano()
// this skips meta data log events
if err := fs.filer.Store.UpdateEntry(context.Background(), newEntry); err != nil {
fs.filer.DeleteChunks(chunks)
return nil, err
}
fs.filer.DeleteChunks(garbage)
fs.filer.NotifyUpdateEvent(ctx, entry, newEntry, true, false, nil)
resp.Entry = newEntry.ToProtoEntry()
return resp, nil
}
|
