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1 | // @(#)alimdc:$Name$:$Id$ | |
2 | // Author: Fons Rademakers 26/11/99 | |
3 | ||
4 | /************************************************************************** | |
5 | * Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. * | |
6 | * * | |
7 | * Author: The ALICE Off-line Project. * | |
8 | * Contributors are mentioned in the code where appropriate. * | |
9 | * * | |
10 | * Permission to use, copy, modify and distribute this software and its * | |
11 | * documentation strictly for non-commercial purposes is hereby granted * | |
12 | * without fee, provided that the above copyright notice appears in all * | |
13 | * copies and that both the copyright notice and this permission notice * | |
14 | * appear in the supporting documentation. The authors make no claims * | |
15 | * about the suitability of this software for any purpose. It is * | |
16 | * provided "as is" without express or implied warranty. * | |
17 | **************************************************************************/ | |
18 | ||
19 | ////////////////////////////////////////////////////////////////////////// | |
20 | // // | |
21 | // AliTagDB // | |
22 | // // | |
23 | ////////////////////////////////////////////////////////////////////////// | |
24 | ||
25 | #include <errno.h> | |
26 | ||
27 | #include <TSystem.h> | |
28 | ||
29 | #include "AliESD.h" | |
30 | ||
31 | #include "AliRawDB.h" | |
32 | #include "AliRawEventHeaderBase.h" | |
33 | #include "AliTagDB.h" | |
34 | ||
35 | ||
36 | ClassImp(AliTagDB) | |
37 | ||
38 | ||
39 | //______________________________________________________________________________ | |
40 | AliTagDB::AliTagDB(AliRawEventHeaderBase *header, const char* fileName) : | |
41 | fTagDB(NULL), | |
42 | fTree(NULL), | |
43 | fHeader(header), | |
44 | fMaxSize(-1), | |
45 | fFS(""), | |
46 | fDeleteFiles(kFALSE) | |
47 | { | |
48 | // Create tag DB. | |
49 | ||
50 | if (fileName) { | |
51 | if (!Create(fileName)) | |
52 | MakeZombie(); | |
53 | } | |
54 | } | |
55 | ||
56 | //______________________________________________________________________________ | |
57 | AliTagDB::AliTagDB(const AliTagDB& tagDB): TObject(tagDB) | |
58 | { | |
59 | // copy constructor | |
60 | ||
61 | Fatal("AliTagDB", "copy constructor not implemented"); | |
62 | } | |
63 | ||
64 | //______________________________________________________________________________ | |
65 | AliTagDB& AliTagDB::operator = (const AliTagDB& /*tagDB*/) | |
66 | { | |
67 | // assignment operator | |
68 | ||
69 | Fatal("operator =", "assignment operator not implemented"); | |
70 | return *this; | |
71 | } | |
72 | ||
73 | //______________________________________________________________________________ | |
74 | Bool_t AliTagDB::Create(const char* fileName) | |
75 | { | |
76 | // Create a new tag DB. | |
77 | ||
78 | const char *name = fileName; | |
79 | if (!name) name = GetFileName(); | |
80 | fTagDB = new TFile(name, "RECREATE", | |
81 | Form("ALICE MDC%d tag DB", AliRawDB::kMDC), 1); | |
82 | if (fTagDB->IsZombie()) { | |
83 | Error("Create", "error opening tag DB"); | |
84 | fTagDB = 0; | |
85 | return kFALSE; | |
86 | } | |
87 | // Put wide read-write permissions | |
88 | if(gSystem->Chmod(name,438)) { | |
89 | Error("Create", "can't set permissions for tag DB file"); | |
90 | fTagDB = 0; | |
91 | return kFALSE; | |
92 | } | |
93 | ||
94 | // Create ROOT Tree object container | |
95 | fTree = new TTree("TAG", Form("ALICE MDC%d header data tree", AliRawDB::kMDC)); | |
96 | fTree->SetAutoSave(100000000); // autosave when 100 Mbyte written | |
97 | ||
98 | Int_t bufsize = 32000; | |
99 | Int_t split = 1; | |
100 | const char *headername = fHeader->GetName(); | |
101 | fTree->Branch("header", headername, &fHeader, bufsize, split); | |
102 | ||
103 | return kTRUE; | |
104 | } | |
105 | ||
106 | //______________________________________________________________________________ | |
107 | void AliTagDB::Close() | |
108 | { | |
109 | // Close tag DB. | |
110 | ||
111 | if (!fTagDB) return; | |
112 | ||
113 | fTagDB->cd(); | |
114 | ||
115 | // Write the tree. | |
116 | fTree->Write(); | |
117 | ||
118 | // Close DB, this also deletes the fTree | |
119 | fTagDB->Close(); | |
120 | ||
121 | if (fDeleteFiles) | |
122 | gSystem->Unlink(fTagDB->GetName()); | |
123 | ||
124 | delete fTagDB; | |
125 | fTagDB = 0; | |
126 | } | |
127 | ||
128 | //______________________________________________________________________________ | |
129 | Bool_t AliTagDB::NextFile(const char* fileName) | |
130 | { | |
131 | // Close te current file and open a new one. | |
132 | // Returns kFALSE in case opening failed. | |
133 | ||
134 | Close(); | |
135 | ||
136 | if (!Create(fileName)) return kFALSE; | |
137 | return kTRUE; | |
138 | } | |
139 | ||
140 | //______________________________________________________________________________ | |
141 | void AliTagDB::SetFS(const char* fs) | |
142 | { | |
143 | // set the file system location | |
144 | ||
145 | fFS = fs; | |
146 | if (fs) { | |
147 | gSystem->ResetErrno(); | |
148 | gSystem->MakeDirectory(fs); | |
149 | if (gSystem->GetErrno() && gSystem->GetErrno() != EEXIST) { | |
150 | SysError("SetFS", "mkdir %s", fs); | |
151 | } | |
152 | } | |
153 | } | |
154 | ||
155 | //______________________________________________________________________________ | |
156 | Float_t AliTagDB::GetCompressionFactor() const | |
157 | { | |
158 | // Return compression factor. | |
159 | ||
160 | if (fTree->GetZipBytes() == 0.) | |
161 | return 1.0; | |
162 | else | |
163 | return fTree->GetTotBytes()/fTree->GetZipBytes(); | |
164 | } | |
165 | ||
166 | //______________________________________________________________________________ | |
167 | const char *AliTagDB::GetFileName() const | |
168 | { | |
169 | // Return filename based on hostname and date and time. This will make | |
170 | // each file unique. The tags will be stored in the /data1/tags directory. | |
171 | ||
172 | static char fname[64]; | |
173 | const char *fs = fFS; | |
174 | ||
175 | // check that fs exists (crude check fails if fs is a file) | |
176 | gSystem->MakeDirectory(fs); | |
177 | ||
178 | char hostname[64]; | |
179 | ||
180 | strcpy(hostname, gSystem->HostName()); | |
181 | ||
182 | char *s; | |
183 | if ((s = strchr(hostname, '.'))) | |
184 | *s = 0; | |
185 | ||
186 | TDatime dt; | |
187 | ||
188 | sprintf(fname, "%s/%s_%d_%d.root", fs, hostname, dt.GetDate(), dt.GetTime()); | |
189 | ||
190 | return fname; | |
191 | } |