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1 package com.dwipal;
2
3
4 import javax.swing.*;
5 import java.io.*;
6 import java.util.*;
7
8 public class DwSnmpMibOutputHandler
9 {
10
11 JTextArea outputText;
12 JTextArea outputError;
13 boolean doLog=false;
14 boolean autoScroll=true;
15 static BufferedWriter outfile;
16
17 DwSnmpMibOutputHandler() {
18 }
19
20 public void setAutoScroll(boolean as) {
21 autoScroll=as;
22 }
23 public void setOutput(JTextArea o) {
24 outputText=o;
25
26 }
27
28 public void setOutputError (JTextArea e) {
29 outputError=e;
30 }
31
32
33 void showErrorMessage(String  s) {
34 JOptionPane.showMessageDialog(outputText,s,"Mib Browser",JOptionPane.OK_OPTION);
35 }
36
37
38 public void setLogging(boolean log) {
39
40 try {
41 if(log==true) {
42 String strFileName=getLogFileName();
43 outfile=new BufferedWriter(new FileWriter(strFileName,true));
44 outfile.write("\n**********************************************************\n");
45 outfile.write("MIB Browser Started at : " + new Date());
46 outfile.write("\n**********************************************************\n");
47 System.out.println("Output log file: "+ strFileName);
48 this.doLog=true;
49
50 java.util.Timer tmr=new java.util.Timer (true);
51 class SnmpTimerTask extends java.util.TimerTask {
52 public void run() {
53 try {
54 outfile.flush();
55 } catch (Exception e) {
56 System.out.println("Error in writing to log file: " + e);
57 }
58 }
59 };
60 long lFlushTime=getFlushTime();
61 System.out.println("Log will be refreshed every " + lFlushTime/1000 + " seconds.");
62 tmr.schedule(new SnmpTimerTask(),lFlushTime,lFlushTime);
63
64
65 Thread thrdFlush=new Thread (new Runnable () {
66 public void run() {
67 try {
68 System.out.println("Have a nice day !!");
69 outfile.write("\n**********************************************************\n");
70 outfile.write("MIB Browser Stopped at : " + new Date());
71 outfile.write("\n**********************************************************\n");
72 outfile.flush();
73 outfile.close();
74 } catch (Exception e) {
75 System.out.println("Error while writing to log file: "+ e);
76 }
77 }
78 });
79 Runtime.getRuntime().addShutdownHook(thrdFlush);
80
81 } else outfile.close();
82 }catch(Exception e) {
83 System.out.println("Error : Cannot log" + e.toString());
84 return;
86 }
87 doLog=true;
88 }
89
90 private String getLogFileName() {
91 String strFileName=System.getProperty("logfilename");
92 if(strFileName==null) {
93 strFileName="mibbrowser.log";
94 }
95 return strFileName;
96 }
97
98 private long getFlushTime() {
99 long lTime=0;
100 String strTime=System.getProperty("logrefreshtime");
101 if(strTime!=null) {
102 try {
103 lTime=Long.parseLong(strTime);
104 lTime=lTime*1000;
105 } catch (Exception e) {
106 System.out.println("Invalid value for log refresh time. default will be used.");
107 }
108 }
109
110 if(lTime<1000) { lTime=60*1000; }
113 return lTime;
114 }
115
116 public void println(String s) {
117 if(outputText !=null ) {
118 outputText.append("\n"+s);
119 if(autoScroll==true) outputText.setCaretPosition(outputText.getDocument().getLength() - 1);
120 }
121 try { {
124 outfile.write(s+"\n");
125 }
126 }catch(Exception e) {System.out.println(e.toString());}
127 }
128
129 public void print(String s) {
130 if(outputText !=null) {
131 outputText.append (s);
132 if(autoScroll==true) outputText.setCaretPosition(outputText.getDocument().getLength() - 1);
133 }
134 else System.out.println(s);
135 try { outfile.write(s);
137 }catch(Exception e) {System.out.println(e.toString());}
138
139 }
140
141 public void printError(String e) {
142 if(outputError!=null) outputError.append("\n"+e);
143 else System.err.println(e);
144 try { outfile.write("\n"+e+"\n");
146 }catch(Exception ex) {System.out.println(e.toString());}
147
148 }
149 }
150
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