-
Notifications
You must be signed in to change notification settings - Fork 172
/
handler-version.go
194 lines (173 loc) · 6.12 KB
/
handler-version.go
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
194
/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package views
import (
"context"
"io"
"github.com/micro/go-micro/client"
"go.uber.org/zap"
"github.com/pydio/cells/common"
"github.com/pydio/cells/common/log"
"github.com/pydio/cells/common/micro"
"github.com/pydio/cells/common/proto/tree"
)
type VersionHandler struct {
AbstractHandler
versionClient tree.NodeVersionerClient
}
func (v *VersionHandler) getVersionClient() tree.NodeVersionerClient {
if v.versionClient == nil {
v.versionClient = tree.NewNodeVersionerClient(common.SERVICE_GRPC_NAMESPACE_+common.SERVICE_VERSIONS, defaults.NewClient())
}
return v.versionClient
}
// Create list of nodes if the Versions are required
func (v *VersionHandler) ListNodes(ctx context.Context, in *tree.ListNodesRequest, opts ...client.CallOption) (tree.NodeProvider_ListNodesClient, error) {
ctx, err := v.wrapContext(ctx)
if err != nil {
return nil, err
}
if in.WithVersions {
streamer := NewWrappingStreamer()
resp, e := v.next.ReadNode(ctx, &tree.ReadNodeRequest{Node: in.Node})
if e != nil {
return streamer, e
}
versionStream, er := v.getVersionClient().ListVersions(ctx, &tree.ListVersionsRequest{Node: resp.Node})
if er != nil {
return streamer, er
}
go func() {
defer versionStream.Close()
defer streamer.Close()
log.Logger(ctx).Debug("should list versions of object", zap.Any("node", resp.Node), zap.Error(er))
for {
vResp, vE := versionStream.Recv()
if vE != nil {
break
}
if vResp == nil {
continue
}
log.Logger(ctx).Debug("received version", zap.Any("version", vResp))
vNode := resp.Node
vNode.Etag = string(vResp.Version.Data)
vNode.MTime = vResp.Version.MTime
vNode.Size = vResp.Version.Size
vNode.SetMeta("versionId", vResp.Version.Uuid)
vNode.SetMeta("versionDescription", vResp.Version.Description)
streamer.Send(&tree.ListNodesResponse{
Node: vNode,
})
}
}()
return streamer, nil
} else {
return v.next.ListNodes(ctx, in, opts...)
}
}
func (v *VersionHandler) ReadNode(ctx context.Context, req *tree.ReadNodeRequest, opts ...client.CallOption) (*tree.ReadNodeResponse, error) {
if vId := req.Node.GetStringMeta("versionId"); vId != "" {
// Load Info from Version Service?
log.Logger(ctx).Debug("Reading Node with Version ID", zap.String("versionId", vId))
node := req.Node
if len(node.Uuid) == 0 {
resp, e := v.next.ReadNode(ctx, &tree.ReadNodeRequest{Node: node})
if e != nil {
return nil, e
}
node = resp.Node
}
log.Logger(ctx).Debug("Reading Node with Version ID - Found node")
vResp, err := v.getVersionClient().HeadVersion(ctx, &tree.HeadVersionRequest{Node: node, VersionId: vId})
if err != nil {
return nil, err
}
log.Logger(ctx).Debug("Reading Node with Version ID - Found version", zap.Any("version", vResp.Version))
node.Etag = string(vResp.Version.Data)
node.MTime = vResp.Version.MTime
node.Size = vResp.Version.Size
return &tree.ReadNodeResponse{Node: node}, nil
}
return v.next.ReadNode(ctx, req, opts...)
}
// Redirect to Version Store if request contains a VersionID
func (v *VersionHandler) GetObject(ctx context.Context, node *tree.Node, requestData *GetRequestData) (io.ReadCloser, error) {
ctx, err := v.wrapContext(ctx)
if err != nil {
return nil, err
}
if len(requestData.VersionId) > 0 {
source, e := v.clientsPool.GetDataSourceInfo(common.PYDIO_VERSIONS_NAMESPACE)
if e != nil {
return nil, e
}
// We are trying to load a specific versionId => switch to vID store
if len(node.Uuid) == 0 {
resp, e := v.next.ReadNode(ctx, &tree.ReadNodeRequest{Node: node})
if e != nil {
return nil, e
}
node = resp.Node
}
node = &tree.Node{
Path: node.Uuid + "__" + requestData.VersionId,
}
node.SetMeta(common.META_NAMESPACE_DATASOURCE_PATH, node.Path)
branchInfo := BranchInfo{LoadedSource: source}
ctx = WithBranchInfo(ctx, "in", branchInfo)
log.Logger(ctx).Debug("GetObject With VersionId", zap.Any("node", node))
}
return v.next.GetObject(ctx, node, requestData)
}
// Read from Version Store if request contains a VersionID
func (v *VersionHandler) CopyObject(ctx context.Context, from *tree.Node, to *tree.Node, requestData *CopyRequestData) (int64, error) {
ctx, err := v.wrapContext(ctx)
if err != nil {
return 0, err
}
log.Logger(ctx).Debug("CopyObject Has VersionId?", zap.Any("from", from), zap.Any("to", to), zap.Any("requestData", requestData))
if len(requestData.SrcVersionId) > 0 {
source, e := v.clientsPool.GetDataSourceInfo(common.PYDIO_VERSIONS_NAMESPACE)
if e != nil {
return 0, e
}
// We are trying to load a specific versionId => switch to vID store
if len(from.Uuid) == 0 {
resp, e := v.next.ReadNode(ctx, &tree.ReadNodeRequest{Node: from})
if e != nil {
return 0, e
}
from = resp.Node
}
if requestData.Metadata == nil {
requestData.Metadata = make(map[string]string, 1)
}
requestData.Metadata[common.X_AMZ_META_NODE_UUID] = from.Uuid // Make sure to keep Uuid!
from = &tree.Node{
Path: from.Uuid + "__" + requestData.SrcVersionId,
}
from.SetMeta(common.META_NAMESPACE_DATASOURCE_PATH, from.Path)
branchInfo := BranchInfo{LoadedSource: source}
ctx = WithBranchInfo(ctx, "from", branchInfo)
log.Logger(ctx).Debug("CopyObject With VersionId", zap.Any("from", from), zap.Any("branchInfo", branchInfo), zap.Any("to", to))
}
return v.next.CopyObject(ctx, from, to, requestData)
}