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1
6
7 package com.sun.enterprise.config.backup;
8
9 import java.io.File  ;
10 import java.io.FileOutputStream ;
11 import java.io.FileInputStream ;
12 import java.io.BufferedReader ;
13 import java.io.FileReader ;
14 import java.util.ArrayList ;
15 import com.sun.enterprise.config.backup.status.StatusConstants;
16 import com.sun.enterprise.config.backup.status.Status;
17 import com.sun.enterprise.config.backup.pluggable.EnvironmentFactory;
18 import com.sun.enterprise.config.backup.pluggable.BackupEnvironment;
19 import com.sun.enterprise.config.backup.utils.LoggerHelper;
20 import com.sun.enterprise.config.backup.utils.FactoryHelper;
21
22
28 public class HistoryManager
29 implements StatusConstants, EnvironmentConstants {
30
31 private String _backupHistoryFile;
32
33
34 public HistoryManager() throws BackupException {
35 _backupHistoryFile = initBackupHistoryFile();
36 }
37
38 public void addHistoryEntry(Status status) {
39 addHistoryEntry(new HistoryEntry(status));
40 }
41
42 public void addHistoryEntry(HistoryEntry historyEntry) {
43 if (historyEntry == null) return;
45
46 FileOutputStream fos = null;
47 try {
48 File f = new File (_backupHistoryFile);
49 if(!f.exists()) {
50 f.createNewFile();
51 }
52 fos = new FileOutputStream (f, true);
53
54 if(f.exists() && f.length() != 0)
56 fos.write(DefaultConstants.NEWLINE_CHARACTER.getBytes());
57
58 fos.write(historyEntry.toString().getBytes());
59 } catch(Exception e) {
60 LoggerHelper.warning("append_to_backup_history_failed", e);
62 } finally {
63 try {
64 fos.close();
65 } catch(Exception ex){}
66 }
67 }
68
69 public BackupHistory getBackupHistory(int num) {
70 ArrayList arr = new ArrayList ();
71 BackupHistory res;
72
73 BufferedReader in = null;
74 try {
75 File f = new File (_backupHistoryFile);
76 if(!f.exists()) {
77 return new BackupHistory(_backupHistoryFile);
78 }
79
80 in = new BufferedReader (new FileReader (f));
81
82 String line;
83 while((line=in.readLine()) != null) {
84 HistoryEntry he = new HistoryEntry(line);
85 arr.add(he);
86 }
87
88 } catch(Exception e) {
89 LoggerHelper.warning("loading_backup_history_failed", e);
91 } finally {
92 try {
93 in.close();
94 } catch(Exception ex){}
95 }
96
97 res = new BackupHistory(ArrayListToHistoryEntryArr(arr, num), _backupHistoryFile);
98 return res;
100 }
101
102 private HistoryEntry[] ArrayListToHistoryEntryArr(ArrayList arr, int num) {
103 if(arr==null || arr.size() == 0) return null;
104 int size = arr.size();
105
106 if(size > num) size = num;
107
108 HistoryEntry[] res = new HistoryEntry[size];
109 int j=0;
110 for(int i=(arr.size()-size);i<arr.size();i++,j++) {
111 res[j] = (HistoryEntry) arr.get(i);
112 }
113 return res;
114 }
115
116 private String initBackupHistoryFile() throws BackupException {
117 BackupEnvironment be = FactoryHelper.getEnv();
118 String name = be.getBackupHistoryFileName();
119 String dir = be.getDirectoryToStoreHistoryFile();
120
121 return dir + File.separator + name;
122 }
123
124 public String getBackupHistoryFile() {
125 return _backupHistoryFile;
126 }
127
128 public void clearHistory() {
129 try {
130 File f = new File (_backupHistoryFile);
131 f.delete();
132 f.createNewFile();
133 } catch(Exception io) {
134 LoggerHelper.warning("error_clearing_history", io);
135 }
136 }
137 } |
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