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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
|
// **********************************************************************
//
// Copyright (c) 2003-2009 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <PersistentFilesystemI.h>
#include <Freeze/Freeze.h>
using namespace std;
//
// Filesystem::NodeI
//
IdentityNodeMap* Filesystem::NodeI::_map;
Filesystem::NodeI::NodeI(const DirectoryIPtr& parent)
: _parent(parent), _destroyed(false)
{
}
//
// Filesystem::FileI
//
void
Filesystem::FileI::destroy(const Ice::Current& c)
{
IceUtil::Mutex::Lock lock(_nodeMutex);
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__, c.id, c.facet, c.operation);
}
_destroyed = true;
_parent->removeEntry(_file->name);
_map->erase(c.id);
c.adapter->remove(c.id);
}
string
Filesystem::FileI::name(const Ice::Current& c)
{
IceUtil::Mutex::Lock lock(_nodeMutex);
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__, c.id, c.facet, c.operation);
}
return _file->name;
}
Filesystem::Lines
Filesystem::FileI::read(const Ice::Current& c)
{
IceUtil::Mutex::Lock lock(_nodeMutex);
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__, c.id, c.facet, c.operation);
}
return _file->text;
}
void
Filesystem::FileI::write(const Filesystem::Lines& text, const Ice::Current& c)
{
IceUtil::Mutex::Lock lock(_nodeMutex);
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__, c.id, c.facet, c.operation);
}
_file->text = text;
_map->put(make_pair(c.id, _file));
}
Filesystem::FileI::FileI(const PersistentFilePtr& file, const DirectoryIPtr& parent)
: NodeI(parent), _file(file)
{
}
//
// Filesystem::DirectoryI
//
Ice::ObjectAdapterPtr Filesystem::DirectoryI::_adapter;
void
Filesystem::DirectoryI::destroy(const Ice::Current& c)
{
IceUtil::Mutex::Lock lock(_nodeMutex);
if(!_parent)
{
throw Filesystem::PermissionDenied("Cannot destroy root directory");
}
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__, c.id, c.facet, c.operation);
}
if(!_dir->nodes.empty())
{
throw Filesystem::PermissionDenied("Cannot destroy non-empty directory");
}
_destroyed = true;
_parent->removeEntry(_dir->name);
_map->erase(c.id);
c.adapter->remove(c.id);
}
string
Filesystem::DirectoryI::name(const Ice::Current& c)
{
IceUtil::Mutex::Lock lock(_nodeMutex);
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__, c.id, c.facet, c.operation);
}
return _dir->name;
}
Filesystem::NodeDescSeq
Filesystem::DirectoryI::list(const Ice::Current& c)
{
IceUtil::Mutex::Lock lock(_nodeMutex);
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__, c.id, c.facet, c.operation);
}
NodeDict::const_iterator p;
NodeDescSeq result;
for(p = _dir->nodes.begin(); p != _dir->nodes.end(); ++p)
{
result.push_back(p->second);
}
return result;
}
Filesystem::NodeDesc
Filesystem::DirectoryI::find(const string& name, const Ice::Current& c)
{
IceUtil::Mutex::Lock lock(_nodeMutex);
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__, c.id, c.facet, c.operation);
}
NodeDict::const_iterator p = _dir->nodes.find(name);
if(p == _dir->nodes.end())
{
throw NoSuchName(name);
}
return p->second;
}
Filesystem::DirectoryPrx
Filesystem::DirectoryI::createDirectory(const string& name, const Ice::Current& c)
{
IceUtil::Mutex::Lock lock(_nodeMutex);
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__, c.id, c.facet, c.operation);
}
if(name.empty() || _dir->nodes.find(name) != _dir->nodes.end())
{
throw NameInUse(name);
}
PersistentDirectoryPtr persistentDir = new PersistentDirectory;
persistentDir->name = name;
Ice::Identity id = c.adapter->getCommunicator()->stringToIdentity(IceUtil::generateUUID());
DirectoryIPtr dir = new DirectoryI(id, persistentDir, this);
_map->put(make_pair(id, persistentDir));
DirectoryPrx proxy = DirectoryPrx::uncheckedCast(c.adapter->createProxy(id));
NodeDesc nd;
nd.name = name;
nd.type = DirType;
nd.proxy = proxy;
_dir->nodes[name] = nd;
_map->put(make_pair(c.id, _dir));
c.adapter->add(dir, id);
return proxy;
}
Filesystem::FilePrx
Filesystem::DirectoryI::createFile(const string& name, const Ice::Current& c)
{
IceUtil::Mutex::Lock lock(_nodeMutex);
if(_destroyed)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__, c.id, c.facet, c.operation);
}
if(name.empty() || _dir->nodes.find(name) != _dir->nodes.end())
{
throw NameInUse(name);
}
PersistentFilePtr persistentFile = new PersistentFile;
persistentFile->name = name;
FileIPtr file = new FileI(persistentFile, this);
Ice::Identity id = c.adapter->getCommunicator()->stringToIdentity(IceUtil::generateUUID());
_map->put(make_pair(id, persistentFile));
FilePrx proxy = FilePrx::uncheckedCast(c.adapter->createProxy(id));
NodeDesc nd;
nd.name = name;
nd.type = FileType;
nd.proxy = proxy;
_dir->nodes[name] = nd;
_map->put(make_pair(c.id, _dir));
c.adapter->add(file, id);
return proxy;
}
//
// Called by the child to remove itself from the parent's node map when the child is destroyed.
//
void
Filesystem::DirectoryI::removeEntry(const string& name)
{
IceUtil::Mutex::Lock lock(_nodeMutex);
NodeDict::iterator p = _dir->nodes.find(name);
assert(p != _dir->nodes.end());
_dir->nodes.erase(p);
_map->put(make_pair(_id, _dir));
}
Filesystem::DirectoryI::DirectoryI(const Ice::Identity& pid,
const PersistentDirectoryPtr& pdir,
const DirectoryIPtr& parent)
: NodeI(parent), _id(pid), _dir(pdir)
{
// Instantiate the child nodes
//
for(NodeDict::iterator p = _dir->nodes.begin(); p != _dir->nodes.end(); ++p)
{
Ice::Identity id = p->second.proxy->ice_getIdentity();
PersistentNodePtr node = _map->find(id)->second;
if(p->second.type == DirType)
{
PersistentDirectoryPtr pDir = PersistentDirectoryPtr::dynamicCast(node);
assert(pDir);
DirectoryIPtr d = new DirectoryI(id, pDir, this);
_adapter->add(d, id);
}
else
{
PersistentFilePtr pFile = PersistentFilePtr::dynamicCast(node);
assert(pFile);
FileIPtr f = new FileI(pFile, this);
_adapter->add(f, id);
}
}
}
|
