1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
|
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.tuscany.sca.binding.atom.provider;
import static org.apache.tuscany.sca.binding.atom.provider.AtomBindingUtil.entry;
import static org.apache.tuscany.sca.binding.atom.provider.AtomBindingUtil.feedEntry;
import java.io.InputStreamReader;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.List;
import org.apache.abdera.Abdera;
import org.apache.abdera.factory.Factory;
import org.apache.abdera.model.Document;
import org.apache.abdera.model.Feed;
import org.apache.abdera.parser.Parser;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.DeleteMethod;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.PutMethod;
import org.apache.commons.httpclient.methods.StringRequestEntity;
import org.apache.tuscany.sca.binding.atom.collection.NotFoundException;
import org.apache.tuscany.sca.data.collection.Entry;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
import org.osoa.sca.ServiceRuntimeException;
/**
* Invoker for the Atom binding.
*
* @version $Rev$ $Date$
*/
class AtomBindingInvoker implements Invoker {
private static final Factory abderaFactory = Abdera.getNewFactory();
private static final Parser abderaParser = Abdera.getNewParser();
Operation operation;
String uri;
HttpClient httpClient;
String authorizationHeader;
AtomReferenceBindingProvider provider;
AtomBindingInvoker(Operation operation, String uri, HttpClient httpClient, String authorizationHeader, AtomReferenceBindingProvider bindingProvider) {
this.operation = operation;
this.uri = uri;
this.httpClient = httpClient;
this.authorizationHeader = authorizationHeader;
this.provider = bindingProvider;
}
public Message invoke(Message msg) {
// Shouldn't get here, as the only supported methods are
// defined in the ResourceCollection interface, and implemented
// by specific invoker subclasses
throw new UnsupportedOperationException(operation.getName());
}
/**
* Get operation invoker
*/
public static class GetInvoker extends AtomBindingInvoker {
public GetInvoker(Operation operation, String uri, HttpClient httpClient, String authorizationHeader, AtomReferenceBindingProvider bindingProvider) {
super(operation, uri, httpClient, authorizationHeader, bindingProvider);
}
@Override
public Message invoke(Message msg) {
// Get an entry
String id = (String)((Object[])msg.getBody())[0];
// Send an HTTP GET
GetMethod getMethod = new GetMethod(uri + "/" + id);
getMethod.setRequestHeader("Authorization", authorizationHeader);
boolean parsing = false;
try {
httpClient.executeMethod(getMethod);
int status = getMethod.getStatusCode();
// Read the Atom entry
if (status == 200) {
Document<org.apache.abdera.model.Entry> doc =
abderaParser.parse(new InputStreamReader(getMethod.getResponseBodyAsStream()));
parsing = true;
org.apache.abdera.model.Entry feedEntry = doc.getRoot();
if (provider.supportsFeedEntries()) {
// Return the Atom entry
msg.setBody(feedEntry);
} else {
// Convert the feed entry to a data entry and return the data item
Entry<Object, Object> entry = entry(feedEntry, provider.getItemClassType(),
provider.getItemXMLType(), provider.getMediator());
msg.setBody(entry.getData());
}
} else if (status == 404) {
if ( provider.supportsFeedEntries())
msg.setFaultBody(new NotFoundException());
else
msg.setFaultBody(new org.apache.tuscany.sca.data.collection.NotFoundException());
} else {
msg.setFaultBody(new ServiceRuntimeException("HTTP status code: " + status));
}
} catch (Exception e) {
msg.setFaultBody(new ServiceRuntimeException(e));
} finally {
if (!parsing) {
// Release the connection unless the Abdera parser is
// parsing the response, in this case it will release it
getMethod.releaseConnection();
}
}
return msg;
}
}
/**
* Post operation invoker
*/
public static class PostInvoker extends AtomBindingInvoker {
public PostInvoker(Operation operation, String uri, HttpClient httpClient, String authorizationHeader, AtomReferenceBindingProvider bindingProvider) {
super(operation, uri, httpClient, authorizationHeader, bindingProvider);
}
@Override
public Message invoke(Message msg) {
// Post an entry
Object[] args = (Object[])msg.getBody();
org.apache.abdera.model.Entry feedEntry;
if (provider.supportsFeedEntries()) {
// Expect an Atom entry
feedEntry = (org.apache.abdera.model.Entry)args[0];
} else {
// Expect a key and data item
Entry<Object, Object> entry = new Entry<Object, Object>(args[0], args[1]);
feedEntry = feedEntry(entry, provider.getItemClassType(),
provider.getItemXMLType(), provider.getMediator(), abderaFactory);
}
// Send an HTTP POST
PostMethod postMethod = new PostMethod(uri);
postMethod.setRequestHeader("Authorization", authorizationHeader);
boolean parsing = false;
try {
// Write the Atom entry
StringWriter writer = new StringWriter();
feedEntry.writeTo(writer);
// postMethod.setRequestHeader("Content-type", "application/atom+xml; charset=utf-8");
postMethod.setRequestHeader("Content-type", "application/atom+xml;type=entry");
postMethod.setRequestEntity(new StringRequestEntity(writer.toString()));
httpClient.executeMethod(postMethod);
int status = postMethod.getStatusCode();
// Read the Atom entry
if (status == 200 || status == 201) {
Document<org.apache.abdera.model.Entry> doc = abderaParser.parse(new InputStreamReader(postMethod.getResponseBodyAsStream()));
parsing = true;
org.apache.abdera.model.Entry createdEntry = doc.getRoot();
// Returns the created Atom entry ID
if (provider.supportsFeedEntries()) {
// Returns the created entry
msg.setBody(createdEntry);
} else {
// Returns the id of the created entry
msg.setBody(createdEntry.getId().toString());
}
} else if (status == 404) {
if ( provider.supportsFeedEntries())
msg.setFaultBody(new NotFoundException());
else
msg.setFaultBody(new org.apache.tuscany.sca.data.collection.NotFoundException());
} else {
msg.setFaultBody(new ServiceRuntimeException("HTTP status code: " + status));
}
} catch (Exception e) {
msg.setFaultBody(new ServiceRuntimeException(e));
} finally {
if (!parsing) {
// Release the connection unless the Abdera parser is
// parsing the response, in this case it will release it
postMethod.releaseConnection();
}
}
return msg;
}
}
/**
* Put operation invoker
*/
public static class PutInvoker extends AtomBindingInvoker {
public PutInvoker(Operation operation, String uri, HttpClient httpClient, String authorizationHeader, AtomReferenceBindingProvider bindingProvider) {
super(operation, uri, httpClient, authorizationHeader, bindingProvider);
}
@Override
public Message invoke(Message msg) {
// Put an entry
Object[] args = (Object[])msg.getBody();
String id;
org.apache.abdera.model.Entry feedEntry;
if (provider.supportsFeedEntries()) {
// Expect a key and Atom entry
id = (String)args[0];
feedEntry = (org.apache.abdera.model.Entry)args[1];
} else {
// Expect a key and data item
id = (String)args[0];
Entry<Object, Object> entry = new Entry<Object, Object>(id, args[1]);
feedEntry = feedEntry(entry, provider.getItemClassType(),
provider.getItemXMLType(), provider.getMediator(), abderaFactory);
}
// Send an HTTP PUT
PutMethod putMethod = new PutMethod(uri + "/" + id);
putMethod.setRequestHeader("Authorization", authorizationHeader);
try {
// Write the Atom entry
StringWriter writer = new StringWriter();
feedEntry.writeTo(writer);
putMethod.setRequestHeader("Content-type", "application/atom+xml; charset=utf-8");
putMethod.setRequestEntity(new StringRequestEntity(writer.toString()));
httpClient.executeMethod(putMethod);
int status = putMethod.getStatusCode();
if (status == 200 || status == 201 || status == 412) {
msg.setBody(null);
} else if (status == 404) {
if ( provider.supportsFeedEntries())
msg.setFaultBody(new NotFoundException());
else
msg.setFaultBody(new org.apache.tuscany.sca.data.collection.NotFoundException());
} else {
msg.setFaultBody(new ServiceRuntimeException("HTTP status code: " + status));
}
} catch (Exception e) {
msg.setFaultBody(new ServiceRuntimeException(e));
} finally {
putMethod.releaseConnection();
}
return msg;
}
}
/**
* Delete operation invoker
*/
public static class DeleteInvoker extends AtomBindingInvoker {
public DeleteInvoker(Operation operation, String uri, HttpClient httpClient, String authorizationHeader, AtomReferenceBindingProvider bindingProvider) {
super(operation, uri, httpClient, authorizationHeader, bindingProvider);
}
@Override
public Message invoke(Message msg) {
// Delete an entry
String id = (String)((Object[])msg.getBody())[0];
// Send an HTTP DELETE
DeleteMethod deleteMethod = new DeleteMethod(uri + "/" + id);
deleteMethod.setRequestHeader("Authorization", authorizationHeader);
try {
httpClient.executeMethod(deleteMethod);
int status = deleteMethod.getStatusCode();
if (status == 200) {
msg.setBody(null);
} else if (status == 404) {
if ( provider.supportsFeedEntries())
msg.setFaultBody(new NotFoundException());
else
msg.setFaultBody(new org.apache.tuscany.sca.data.collection.NotFoundException());
} else {
msg.setFaultBody(new ServiceRuntimeException("HTTP status code: " + status));
}
} catch (Exception e) {
msg.setFaultBody(new ServiceRuntimeException(e));
} finally {
deleteMethod.releaseConnection();
}
return msg;
}
}
/**
* GetAll operation invoker
*/
public static class GetAllInvoker extends AtomBindingInvoker {
public GetAllInvoker(Operation operation, String uri, HttpClient httpClient, String authorizationHeader, AtomReferenceBindingProvider bindingProvider) {
super(operation, uri, httpClient, authorizationHeader, bindingProvider);
}
@Override
public Message invoke(Message msg) {
// Get a feed
// Send an HTTP GET
GetMethod getMethod = new GetMethod(uri);
getMethod.setRequestHeader("Authorization", authorizationHeader);
boolean parsing = false;
try {
httpClient.executeMethod(getMethod);
int status = getMethod.getStatusCode();
// AtomBindingInvoker.printResponseHeader( getMethod );
// Read the Atom feed
if (status == 200) {
Document<Feed> doc = abderaParser.parse(new InputStreamReader(getMethod.getResponseBodyAsStream()));
parsing = true;
Feed feed = doc.getRoot();
if (provider.supportsFeedEntries()) {
// Returns the Atom feed
msg.setBody(feed);
} else {
// Returns an array of data entries
List<Entry<Object, Object>> entries = new ArrayList<Entry<Object,Object>>();
for (org.apache.abdera.model.Entry feedEntry: feed.getEntries()) {
Entry<Object, Object> entry = entry(feedEntry, provider.getItemClassType(),
provider.getItemXMLType(), provider.getMediator());
entries.add(entry);
}
msg.setBody(entries.toArray(new Entry[entries.size()]));
}
} else if (status == 404) {
if ( provider.supportsFeedEntries())
msg.setFaultBody(new NotFoundException());
else
msg.setFaultBody(new org.apache.tuscany.sca.data.collection.NotFoundException());
} else {
msg.setFaultBody(new ServiceRuntimeException("HTTP status code: " + status));
}
} catch (Exception e) {
msg.setFaultBody(new ServiceRuntimeException(e));
} finally {
if (!parsing) {
// Release the connection unless the Abdera parser is
// parsing the response, in this case it will release it
getMethod.releaseConnection();
}
}
return msg;
}
}
/**
* Query operation invoker
*/
public static class QueryInvoker extends AtomBindingInvoker {
public QueryInvoker(Operation operation, String uri, HttpClient httpClient, String authorizationHeader, AtomReferenceBindingProvider bindingProvider) {
super(operation, uri, httpClient, authorizationHeader, bindingProvider);
}
@Override
public Message invoke(Message msg) {
// Get a feed from a query
String queryString = (String)((Object[])msg.getBody())[0];
// Send an HTTP GET
GetMethod getMethod = new GetMethod(uri);
getMethod.setRequestHeader("Authorization", authorizationHeader);
getMethod.setQueryString(queryString);
boolean parsing = false;
try {
httpClient.executeMethod(getMethod);
int status = getMethod.getStatusCode();
// Read the Atom feed
if (status == 200) {
Document<Feed> doc = abderaParser.parse(new InputStreamReader(getMethod.getResponseBodyAsStream()));
parsing = true;
Feed feed = doc.getRoot();
if (provider.supportsFeedEntries()) {
// Returns the Atom feed
msg.setBody(feed);
} else {
// Returns an array of data entries
List<Entry<Object, Object>> entries = new ArrayList<Entry<Object,Object>>();
for (org.apache.abdera.model.Entry feedEntry: feed.getEntries()) {
Entry<Object, Object> entry = entry(feedEntry, provider.getItemClassType(),
provider.getItemXMLType(), provider.getMediator());
entries.add(entry);
}
msg.setBody(entries.toArray(new Entry[entries.size()]));
}
} else if (status == 404) {
if ( provider.supportsFeedEntries())
msg.setFaultBody(new NotFoundException());
else
msg.setFaultBody(new org.apache.tuscany.sca.data.collection.NotFoundException());
} else {
msg.setFaultBody(new ServiceRuntimeException("HTTP status code: " + status));
}
} catch (Exception e) {
msg.setFaultBody(new ServiceRuntimeException(e));
} finally {
if (!parsing) {
// Release the connection unless the Abdera parser is
// parsing the response, in this case it will release it
getMethod.releaseConnection();
}
}
return msg;
}
}
/**
* PostMedia operation invoker
*/
public static class PostMediaInvoker extends AtomBindingInvoker {
public PostMediaInvoker(Operation operation, String uri, HttpClient httpClient, String authorizationHeader, AtomReferenceBindingProvider bindingProvider) {
super(operation, uri, httpClient, authorizationHeader, bindingProvider);
}
@Override
public Message invoke(Message msg) {
// PostInvoker can detect media by content type (non-Feed, non-Entry)
return super.invoke(msg);
}
}
/**
* PutMedia operation invoker
*/
public static class PutMediaInvoker extends AtomBindingInvoker {
public PutMediaInvoker(Operation operation, String uri, HttpClient httpClient, String authorizationHeader, AtomReferenceBindingProvider bindingProvider) {
super(operation, uri, httpClient, authorizationHeader, bindingProvider);
}
@Override
public Message invoke(Message msg) {
// PutInvoker can detect media by content type (non-Feed, non-Entry)
return super.invoke(msg);
}
}
}
|