00001
00002
00003
00004 #ifndef DMLITE_CPP_INODE_H
00005 #define DMLITE_CPP_INODE_H
00006
00007 #include "dmlite/common/config.h"
00008 #include "base.h"
00009 #include "exceptions.h"
00010 #include "utils/extensible.h"
00011 #include "utils/security.h"
00012 #include "utils/checksums.h"
00013
00014 #include <dirent.h>
00015 #include <utime.h>
00016 #include <string>
00017 #include <vector>
00018
00019 namespace dmlite {
00020
00021
00022 class StackInstance;
00023
00024
00025 struct IDirectory { virtual ~IDirectory(); };
00026
00027
00028 struct ExtendedStat: public Extensible {
00029 enum FileStatus { kOnline = '-',
00030 kMigrated = 'm'
00031 };
00032
00033 ino_t parent;
00034 struct stat stat;
00035 FileStatus status;
00036 std::string name;
00037 std::string guid;
00038 std::string csumtype;
00039 std::string csumvalue;
00040 Acl acl;
00041
00042 bool operator == (const ExtendedStat&) const;
00043 bool operator != (const ExtendedStat&) const;
00044 bool operator < (const ExtendedStat&) const;
00045 bool operator > (const ExtendedStat&) const;
00046
00047 void fixchecksums() {
00048
00049 if (!csumtype.length() || !csumvalue.length()) {
00050 std::string shortCsumType;
00051 std::vector<std::string> keys = getKeys();
00052
00053 for (unsigned i = 0; i < keys.size(); ++i) {
00054 if (checksums::isChecksumFullName(keys[i])) {
00055 std::string csumXattr = keys[i];
00056 shortCsumType = checksums::shortChecksumName(csumXattr.substr(9));
00057 if (!shortCsumType.empty() && shortCsumType.length() <= 2) {
00058 csumvalue = getString(csumXattr);
00059 csumtype = shortCsumType;
00060 break;
00061 }
00062 }
00063 }
00064
00065 }
00066 else {
00067
00068 checksums::fillChecksumInXattr(*this);
00069 }
00070 }
00071
00072
00073 };
00074
00075
00076 struct SymLink: public Extensible {
00077 ino_t inode;
00078 std::string link;
00079
00080 bool operator == (const SymLink&) const;
00081 bool operator != (const SymLink&) const;
00082 bool operator < (const SymLink&) const;
00083 bool operator > (const SymLink&) const;
00084 };
00085
00086
00087 struct Replica: public Extensible {
00088 enum ReplicaStatus { kAvailable = '-',
00089 kBeingPopulated = 'P',
00090 kToBeDeleted = 'D'
00091 };
00092 enum ReplicaType { kVolatile = 'V',
00093 kPermanent = 'P'
00094 };
00095
00096 int64_t replicaid;
00097 int64_t fileid;
00098
00099 int64_t nbaccesses;
00100 time_t atime;
00101 time_t ptime;
00102 time_t ltime;
00103
00104 ReplicaStatus status;
00105 ReplicaType type;
00106
00107 std::string server;
00108 std::string rfn;
00109
00110 bool operator == (const Replica&) const;
00111 bool operator != (const Replica&) const;
00112 bool operator < (const Replica&) const;
00113 bool operator > (const Replica&) const;
00114 };
00115
00116
00117
00118 class INode: public virtual BaseInterface {
00119 public:
00120
00121 virtual ~INode();
00122
00123
00124 virtual void begin(void) throw (DmException);
00125
00126
00127 virtual void commit(void) throw (DmException);
00128
00129
00130 virtual void rollback(void) throw (DmException);
00131
00132
00133
00134
00135 virtual ExtendedStat create(const ExtendedStat& f) throw (DmException);
00136
00137
00138
00139
00140
00141 virtual void symlink(ino_t inode, const std::string &link) throw (DmException);
00142
00143
00144
00145
00146
00147
00148 virtual void unlink(ino_t inode) throw (DmException);
00149
00150
00151
00152
00153 virtual void move(ino_t inode, ino_t dest) throw (DmException);
00154
00155
00156
00157
00158 virtual void rename(ino_t inode, const std::string& name) throw (DmException);
00159
00160
00161
00162
00163 virtual ExtendedStat extendedStat(ino_t inode) throw (DmException);
00164
00165
00166
00167
00168
00169 virtual ExtendedStat extendedStat(ino_t parent,
00170 const std::string& name) throw (DmException);
00171
00172
00173
00174 virtual ExtendedStat extendedStat(const std::string& guid) throw (DmException);
00175
00176
00177
00178
00179
00180 virtual SymLink readLink(ino_t inode) throw (DmException);
00181
00182
00183
00184
00185 virtual void addReplica(const Replica& replica) throw (DmException);
00186
00187
00188
00189 virtual void deleteReplica(const Replica& replica) throw (DmException);
00190
00191
00192
00193 virtual Replica getReplica(int64_t rid) throw (DmException);
00194
00195
00196
00197 virtual Replica getReplica(const std::string& rfn) throw (DmException);
00198
00199
00200
00201 virtual void updateReplica(const Replica& replica) throw (DmException);
00202
00203
00204
00205 virtual std::vector<Replica> getReplicas(ino_t inode) throw (DmException);
00206
00207
00208
00209
00210 virtual void utime(ino_t inode,
00211 const struct utimbuf* buf) throw (DmException);
00212
00213
00214
00215
00216
00217
00218
00219
00220 virtual void setMode(ino_t inode, uid_t uid, gid_t gid, mode_t mode,
00221 const Acl& acl) throw (DmException);
00222
00223
00224
00225
00226 virtual void setSize(ino_t inode, size_t size) throw (DmException);
00227
00228
00229
00230
00231
00232 virtual void setChecksum(ino_t inode, const std::string& csumtype,
00233 const std::string& csumvalue) throw (DmException);
00234
00235
00236
00237
00238 virtual std::string getComment(ino_t inode) throw (DmException);
00239
00240
00241
00242
00243 virtual void setComment(ino_t inode,
00244 const std::string& comment) throw (DmException);
00245
00246
00247
00248 virtual void deleteComment(ino_t inode) throw (DmException);
00249
00250
00251
00252
00253 virtual void setGuid(ino_t inode,
00254 const std::string& guid) throw (DmException);
00255
00256
00257
00258 virtual void updateExtendedAttributes(ino_t inode,
00259 const Extensible& attr) throw (DmException);
00260
00261
00262
00263
00264 virtual IDirectory* openDir(ino_t inode) throw (DmException);
00265
00266
00267
00268 virtual void closeDir(IDirectory* dir) throw (DmException);
00269
00270
00271
00272
00273 virtual ExtendedStat* readDirx(IDirectory* dir) throw (DmException);
00274
00275
00276
00277
00278 virtual struct dirent* readDir (IDirectory* dir) throw (DmException);
00279 };
00280
00281
00282 class INodeFactory: public virtual BaseFactory {
00283 public:
00284
00285 virtual ~INodeFactory();
00286
00287 protected:
00288
00289 friend class StackInstance;
00290
00291
00292 static INode* createINode(INodeFactory* factory,
00293 PluginManager* pm) throw (DmException);
00294
00295
00296 virtual INode* createINode(PluginManager* pm) throw (DmException);
00297 };
00298
00299 };
00300
00301 #endif // DMLITE_CPP_INODE_H