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1
19
20 package org.apache.excalibur.instrument.manager.http;
21
22 import java.io.IOException  ;
23 import java.io.PrintWriter ;
24 import java.io.UnsupportedEncodingException ;
25 import java.util.Date ;
26
27 import org.apache.excalibur.instrument.manager.http.server.URLCoder;
28 import org.apache.excalibur.instrument.manager.InstrumentableDescriptor;
29 import org.apache.excalibur.instrument.manager.InstrumentDescriptor;
30 import org.apache.excalibur.instrument.manager.InstrumentSampleDescriptor;
31 import org.apache.excalibur.instrument.manager.DefaultInstrumentManager;
32
33
39 public abstract class AbstractHTMLHandler
40 extends AbstractHandler
41 {
42
43 private static final String m_packageVersion =
44 AbstractHTMLHandler.class.getPackage().getImplementationVersion();
45
46
49
56 public AbstractHTMLHandler( String path,
57 DefaultInstrumentManager manager,
58 InstrumentManagerHTTPConnector connector )
59 {
60 super( path, CONTENT_TYPE_TEXT_HTML, manager, connector );
61 }
62
63
66 protected String urlEncode( String str )
67 {
68 try
69 {
70 return URLCoder.encode( str, InstrumentManagerHTTPConnector.ENCODING );
73 }
74 catch ( UnsupportedEncodingException e )
75 {
76 throw new IllegalStateException ( "Unknown encoding: " + e.toString() );
78 }
79 }
80
81 protected void breadCrumbs( PrintWriter out, boolean link )
82 {
83 String rootURL = getConnector().getRootBreadCrumbURL();
84 if ( rootURL != null )
85 {
86 String rootLabel = getConnector().getRootBreadCrumbLabel();
88 out.println( "<a HREF='" + rootURL + "'>" + rootLabel + "</a>" );
89 out.print( " <b>></b> " );
90 }
91
92 if ( link )
93 {
94 out.println( "<a HREF='instrument-manager.html'>"
95 + getInstrumentManager().getDescription() + "</a>" );
96 }
97 else
98 {
99 out.println( getInstrumentManager().getDescription() );
100 }
101 }
102
103 protected void breadCrumbs( PrintWriter out, InstrumentableDescriptor desc, boolean link )
104 {
105 InstrumentableDescriptor parent = desc.getParentInstrumentableDescriptor();
106 if ( parent == null )
107 {
108 breadCrumbs( out, true );
109 }
110 else
111 {
112 breadCrumbs( out, parent, true );
113 }
114 out.print( " <b>></b> " );
115 if ( link )
116 {
117 out.println( "<a HREF='instrumentable.html?name=" + urlEncode( desc.getName() ) + "'>"
118 + desc.getDescription() + "</a>" );
119 }
120 else
121 {
122 out.println( desc.getDescription() );
123 }
124 }
125
126 protected void breadCrumbs( PrintWriter out, InstrumentDescriptor desc, boolean link )
127 {
128 breadCrumbs( out, desc.getInstrumentableDescriptor(), true );
129 out.print( " <b>></b> " );
130 if ( link )
131 {
132 out.println( "<a HREF='instrument.html?name=" + urlEncode( desc.getName() ) + "'>"
133 + desc.getDescription() + "</a>" );
134 }
135 else
136 {
137 out.println( desc.getDescription() );
138 }
139 }
140
141 protected void breadCrumbs( PrintWriter out, InstrumentSampleDescriptor desc, boolean link )
142 {
143 breadCrumbs( out, desc.getInstrumentDescriptor(), true );
144 out.print( " <b>></b> " );
145 if ( link )
146 {
147 out.println( "<a HREF='sample.html?name=" + urlEncode( desc.getName() ) + "'>"
148 + desc.getDescription() + "</a>" );
149 }
150 else
151 {
152 out.println( desc.getDescription() );
153 }
154 }
155
156 protected void startTable( PrintWriter out )
157 throws IOException
158 {
159 out.println( "<table cellpadding='1' cellspacing='0'><tr><td bgcolor='#bbbbbb'><table cellpadding='2' cellspacing='1'>" );
160 }
161 protected void endTable( PrintWriter out )
162 throws IOException
163 {
164 out.println( "</table></td></tr></table>" );
165 }
166
167 protected void startTableHeaderRow( PrintWriter out )
168 throws IOException
169 {
170 out.println( "<tr>" );
171 }
172
173 protected void endTableHeaderRow( PrintWriter out )
174 throws IOException
175 {
176 out.println( "</tr>" );
177 }
178
179 protected void tableHeaderCell( PrintWriter out, String value )
180 throws IOException
181 {
182 out.print( "<td bgcolor='#dddddd' nowrap><b>" + value + "</b></td>" );
183 }
184
185 protected void startTableRow( PrintWriter out, int row )
186 throws IOException
187 {
188 String color;
189 if ( row % 2 == 0 )
190 {
191 color = "#eeeeee";
192 }
193 else
194 {
195 color = "#e4e4e4";
196 }
197 out.println( "<tr bgcolor='" + color + "'>" );
198 }
199
200 protected void endTableRow( PrintWriter out )
201 throws IOException
202 {
203 out.println( "</tr>" );
204 }
205
206 protected void tableCell( PrintWriter out, String value )
207 throws IOException
208 {
209 out.print( "<td nowrap>" + value + "</td>" );
210 }
211
212 protected void tableCellRight( PrintWriter out, String value )
213 throws IOException
214 {
215 out.print( "<td align='right' nowrap>" + value + "</td>" );
216 }
217
218 protected void tableRow( PrintWriter out, int row, String label, String value )
219 throws IOException
220 {
221 startTableRow( out, row );
222 tableHeaderCell( out, label );
223 tableCell( out, value );
224 endTableRow( out );
225 }
226
227 protected void footer( PrintWriter out )
228 {
229 out.println( "<br>" );
230 out.print( "<font size='-1' color='#888888'>" );
231 out.print( "<center>" );
232 out.print( "<a HREF='http://excalibur.apache.org/instrument/html-client.html'>" );
233 out.print( "Excalibur Instrument HTTP Client" );
234 out.print( "</a> Version " );
235 out.print( m_packageVersion );
236 out.print( "<br>" );
237 out.print( "Copyright© 2002-2004 The Apache Software Foundation. All rights reserved." );
238 out.print( "</center>" );
239 out.println( "</font>" );
240 }
241
242 protected void outputInstrumentables( PrintWriter out, InstrumentableDescriptor[] descs )
243 throws IOException
244 {
245 startTable( out );
246 startTableHeaderRow( out );
247 tableHeaderCell( out, "Name" );
248 endTableHeaderRow( out );
249
250 for ( int i = 0; i < descs.length; i++ )
251 {
252 InstrumentableDescriptor desc = descs[i];
253
254 startTableRow( out, i );
255 tableCell( out,
256 "<a HREF='instrumentable.html?name=" + urlEncode( desc.getName() ) + "'>"
257 + desc.getDescription() + "</a>" );
258 endTableRow( out );
259 }
260
261 endTable( out );
262 }
263
264 protected void outputInstruments( PrintWriter out, InstrumentDescriptor[] descs )
265 throws IOException
266 {
267 startTable( out );
268 startTableHeaderRow( out );
269 tableHeaderCell( out, "Name" );
270 endTableHeaderRow( out );
271
272 for ( int i = 0; i < descs.length; i++ )
273 {
274 InstrumentDescriptor desc = descs[i];
275
276 startTableRow( out, i );
277 tableCell( out, "<a HREF='instrument.html?name=" + urlEncode( desc.getName() ) + "'>"
278 + desc.getDescription() + "</a>" );
279 endTableRow( out );
280 }
281
282 endTable( out );
283 }
284
285 protected void outputInstrumentSamples( PrintWriter out,
286 InstrumentSampleDescriptor[] descs,
287 boolean readOnly )
288 throws IOException
289 {
290 startTable( out );
291 startTableHeaderRow( out );
292 tableHeaderCell( out, "Name" );
293 tableHeaderCell( out, "Last Sample" );
294 tableHeaderCell( out, "Last Sample Period" );
295 tableHeaderCell( out, "Interval" );
296 tableHeaderCell( out, "Size" );
297 tableHeaderCell( out, "Expiration Time" );
298 endTableHeaderRow( out );
299
300 for ( int i = 0; i < descs.length; i++ )
301 {
302 InstrumentSampleDescriptor desc = descs[i];
303
304 startTableRow( out, i );
305 tableCell( out, "<a HREF='sample.html?name=" + urlEncode( desc.getName() ) + "'>"
306 + desc.getDescription() + "</a> (<a HREF='sample.html?name="
307 + urlEncode( desc.getName() ) + "&chart=true'>Chart</a>)" );
308 tableCellRight( out, Integer.toString( desc.getValue() ) );
309 tableCell( out, new Date ( desc.getTime() ).toString() );
310 tableCellRight( out, Long.toString( desc.getInterval() ) );
311 tableCellRight( out, Integer.toString( desc.getSize() ) );
312 String value;
313 if ( desc.getLeaseExpirationTime() == 0 )
314 {
315 value = "<i>Permanent</i>";
316 }
317 else
318 {
319 String renewUrl =
320 "sample-lease.html?name=" + urlEncode( desc.getName() ) + "&instrument=true&lease=";
321
322 value = new Date ( desc.getLeaseExpirationTime() ).toString();
323 if ( !readOnly )
324 {
325 value = value
326 + " (Renew <a HREF='" + renewUrl + "600000'>10min</a>, "
327 + "<a HREF='" + renewUrl + "3600000'>1hr</a>, "
328 + "<a HREF='" + renewUrl + "86400000'>1day</a>)";
329 }
330
331 if ( desc.getLeaseExpirationTime() - System.currentTimeMillis() < 300000 )
333 {
334 value = "<font color='ff0000'>" + value + "</font>";
335 }
336 }
337 tableCell( out, value );
338 endTableRow( out );
339 }
340
341 endTable( out );
342 }
343 }
344
345 |
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