1
|
|
|
<?php |
2
|
|
|
|
3
|
|
|
namespace Scriptotek\Alma; |
4
|
|
|
|
5
|
|
|
use Danmichaelo\QuiteSimpleXMLElement\QuiteSimpleXMLElement; |
6
|
|
|
use Http\Client\Common\Exception\ClientErrorException as HttpClientErrorException; |
7
|
|
|
use Http\Client\Common\Plugin\ContentLengthPlugin; |
8
|
|
|
use Http\Client\Common\Plugin\ErrorPlugin; |
9
|
|
|
use Http\Client\Common\PluginClient; |
10
|
|
|
use Http\Client\Exception\NetworkException; |
11
|
|
|
use Http\Client\HttpClient; |
12
|
|
|
use Http\Discovery\HttpClientDiscovery; |
13
|
|
|
use Http\Discovery\MessageFactoryDiscovery; |
14
|
|
|
use Http\Discovery\UriFactoryDiscovery; |
15
|
|
|
use Http\Message\MessageFactory; |
16
|
|
|
use Http\Message\UriFactory; |
17
|
|
|
use Psr\Http\Message\RequestInterface; |
18
|
|
|
use Psr\Http\Message\ResponseInterface; |
19
|
|
|
use Psr\Http\Message\UriInterface; |
20
|
|
|
use Scriptotek\Alma\Analytics\Analytics; |
21
|
|
|
use Scriptotek\Alma\Bibs\Bibs; |
22
|
|
|
use Scriptotek\Alma\Bibs\Items; |
23
|
|
|
use Scriptotek\Alma\Conf\Conf; |
24
|
|
|
use Scriptotek\Alma\Conf\Libraries; |
25
|
|
|
use Scriptotek\Alma\Exception\ClientException as AlmaClientException; |
26
|
|
|
use Scriptotek\Alma\Exception\InvalidApiKey; |
27
|
|
|
use Scriptotek\Alma\Exception\MaxNumberOfAttemptsExhausted; |
28
|
|
|
use Scriptotek\Alma\Exception\RequestFailed; |
29
|
|
|
use Scriptotek\Alma\Exception\ResourceNotFound; |
30
|
|
|
use Scriptotek\Alma\Exception\SruClientNotSetException; |
31
|
|
|
use Scriptotek\Alma\Users\Users; |
32
|
|
|
use Scriptotek\Sru\Client as SruClient; |
33
|
|
|
|
34
|
|
|
/** |
35
|
|
|
* Alma client. |
36
|
|
|
*/ |
37
|
|
|
class Client |
38
|
|
|
{ |
39
|
|
|
public $baseUrl; |
40
|
|
|
|
41
|
|
|
/** @var string Alma zone (institution or network) */ |
42
|
|
|
public $zone; |
43
|
|
|
|
44
|
|
|
/** @var string Alma Developers Network API key for this zone */ |
45
|
|
|
public $key; |
46
|
|
|
|
47
|
|
|
/** @var Client Network zone instance */ |
48
|
|
|
public $nz; |
49
|
|
|
|
50
|
|
|
/** @var HttpClient */ |
51
|
|
|
protected $http; |
52
|
|
|
|
53
|
|
|
/** @var MessageFactory */ |
54
|
|
|
protected $messageFactory; |
55
|
|
|
|
56
|
|
|
/** @var UriFactory */ |
57
|
|
|
protected $uriFactory; |
58
|
|
|
|
59
|
|
|
/** @var SruClient */ |
60
|
|
|
public $sru; |
61
|
|
|
|
62
|
|
|
/** @var Bibs */ |
63
|
|
|
public $bibs; |
64
|
|
|
|
65
|
|
|
/** @var Analytics */ |
66
|
|
|
public $analytics; |
67
|
|
|
|
68
|
|
|
/** @var Users */ |
69
|
|
|
public $users; |
70
|
|
|
|
71
|
|
|
/** @var Items */ |
72
|
|
|
public $items; |
73
|
|
|
|
74
|
|
|
/** @var int Max number of retries if we get 429 errors */ |
75
|
|
|
public $maxAttempts = 10; |
76
|
|
|
|
77
|
|
|
/** @var float Number of seconds to sleep before retrying */ |
78
|
|
|
public $sleepTimeOnRetry = 0.5; |
79
|
|
|
|
80
|
|
|
/** |
81
|
|
|
* Create a new client to connect to a given Alma instance. |
82
|
|
|
* |
83
|
|
|
* @param string $key API key |
84
|
|
|
* @param string $region Hosted region code, used to build base URL |
85
|
|
|
* @param string $zone Alma zone (Either Zones::INSTITUTION or Zones::NETWORK) |
86
|
|
|
* @param HttpClient $http |
87
|
|
|
* @param MessageFactory $messageFactory |
88
|
|
|
* @param UriFactory $uriFactory |
89
|
|
|
* |
90
|
|
|
* @throws \ErrorException |
91
|
|
|
*/ |
92
|
|
|
public function __construct( |
93
|
|
|
$key = null, |
94
|
|
|
$region = 'eu', |
95
|
|
|
$zone = Zones::INSTITUTION, |
96
|
|
|
HttpClient $http = null, |
97
|
|
|
MessageFactory $messageFactory = null, |
98
|
|
|
UriFactory $uriFactory = null |
99
|
|
|
) { |
100
|
|
|
$this->http = new PluginClient( |
101
|
|
|
$http ?: HttpClientDiscovery::find(), [ |
102
|
|
|
new ContentLengthPlugin(), |
103
|
|
|
new ErrorPlugin(), |
104
|
|
|
] |
105
|
|
|
); |
106
|
|
|
$this->messageFactory = $messageFactory ?: MessageFactoryDiscovery::find(); |
107
|
|
|
$this->uriFactory = $uriFactory ?: UriFactoryDiscovery::find(); |
108
|
|
|
|
109
|
|
|
$this->key = $key; |
110
|
|
|
$this->setRegion($region); |
111
|
|
|
|
112
|
|
|
$this->zone = $zone; |
113
|
|
|
|
114
|
|
|
$this->bibs = new Bibs($this); |
115
|
|
|
$this->items = new Items($this); // Only needed for the fromBarcode method :/ |
116
|
|
|
|
117
|
|
|
$this->analytics = new Analytics($this); |
118
|
|
|
$this->users = new Users($this); |
119
|
|
|
|
120
|
|
|
$this->conf = new Conf($this); |
|
|
|
|
121
|
|
|
$this->libraries = $this->conf->libraries; // shortcut |
|
|
|
|
122
|
|
|
|
123
|
|
|
if ($zone == Zones::INSTITUTION) { |
124
|
|
|
$this->nz = new self(null, $region, Zones::NETWORK, $this->http, $this->messageFactory, $this->uriFactory); |
125
|
|
|
} elseif ($zone != Zones::NETWORK) { |
126
|
|
|
throw new AlmaClientException('Invalid zone name.'); |
127
|
|
|
} |
128
|
|
|
} |
129
|
|
|
|
130
|
|
|
/** |
131
|
|
|
* Attach an SRU client (so you can search for Bib records). |
132
|
|
|
* |
133
|
|
|
* @param SruClient $sru |
134
|
|
|
*/ |
135
|
|
|
public function setSruClient(SruClient $sru) |
136
|
|
|
{ |
137
|
|
|
$this->sru = $sru; |
138
|
|
|
} |
139
|
|
|
|
140
|
|
|
/** |
141
|
|
|
* Assert that an SRU client is connected. Throws SruClientNotSetException if not. |
142
|
|
|
* |
143
|
|
|
* @throws SruClientNotSetException |
144
|
|
|
*/ |
145
|
|
|
public function assertHasSruClient() |
146
|
|
|
{ |
147
|
|
|
if (!isset($this->sru)) { |
148
|
|
|
throw new SruClientNotSetException(); |
149
|
|
|
} |
150
|
|
|
} |
151
|
|
|
|
152
|
|
|
/** |
153
|
|
|
* Set the API key for this Alma instance. |
154
|
|
|
* |
155
|
|
|
* @param string $key The API key |
156
|
|
|
* |
157
|
|
|
* @return $this |
158
|
|
|
*/ |
159
|
|
|
public function setKey($key) |
160
|
|
|
{ |
161
|
|
|
$this->key = $key; |
162
|
|
|
|
163
|
|
|
return $this; |
164
|
|
|
} |
165
|
|
|
|
166
|
|
|
/** |
167
|
|
|
* Set the Alma region code ('na' for North America, 'eu' for Europe, 'ap' for Asia Pacific). |
168
|
|
|
* |
169
|
|
|
* @param $regionCode |
170
|
|
|
* |
171
|
|
|
* @throws \ErrorException |
172
|
|
|
* |
173
|
|
|
* @return $this |
174
|
|
|
*/ |
175
|
|
|
public function setRegion($regionCode) |
176
|
|
|
{ |
177
|
|
|
if (!in_array($regionCode, ['na', 'eu', 'ap'])) { |
178
|
|
|
throw new AlmaClientException('Invalid region code'); |
179
|
|
|
} |
180
|
|
|
$this->baseUrl = 'https://api-' . $regionCode . '.hosted.exlibrisgroup.com/almaws/v1'; |
181
|
|
|
|
182
|
|
|
return $this; |
183
|
|
|
} |
184
|
|
|
|
185
|
|
|
/** |
186
|
|
|
* @param string $url|UriInterface |
|
|
|
|
187
|
|
|
* @param array $query |
188
|
|
|
* |
189
|
|
|
* @return UriInterface |
190
|
|
|
*/ |
191
|
|
|
public function buildUrl($url, $query = []) |
192
|
|
|
{ |
193
|
|
|
if (!is_a($url, UriInterface::class)) { |
194
|
|
|
if (strpos($url, $this->baseUrl) === false) { |
195
|
|
|
$url = $this->baseUrl . $url; |
196
|
|
|
} |
197
|
|
|
$url = $this->uriFactory->createUri($url); |
198
|
|
|
} |
199
|
|
|
|
200
|
|
|
$query['apikey'] = $this->key; |
201
|
|
|
|
202
|
|
|
return $url->withQuery(http_build_query($query)); |
203
|
|
|
} |
204
|
|
|
|
205
|
|
|
/** |
206
|
|
|
* Make a synchronous HTTP request and return a PSR7 response if successful. |
207
|
|
|
* In the case of intermittent errors (connection problem, 429 or 5XX error), the request is |
208
|
|
|
* attempted a maximum of {$this->maxAttempts} times with a sleep of {$this->sleepTimeOnRetry} |
209
|
|
|
* between each attempt to avoid hammering the server. |
210
|
|
|
* |
211
|
|
|
* @param RequestInterface $request |
212
|
|
|
* @param int $attempt |
213
|
|
|
* |
214
|
|
|
* @return ResponseInterface |
215
|
|
|
*/ |
216
|
|
|
public function request(RequestInterface $request, $attempt = 1) |
217
|
|
|
{ |
218
|
|
|
if (!$this->key) { |
219
|
|
|
throw new AlmaClientException('No API key defined for ' . $this->zone); |
220
|
|
|
} |
221
|
|
|
|
222
|
|
|
try { |
223
|
|
|
return $this->http->sendRequest($request); |
224
|
|
|
} catch (HttpClientErrorException $e) { |
225
|
|
|
// Thrown for 400 level errors |
226
|
|
|
$error = $this->parseClientError($e); |
227
|
|
|
|
228
|
|
|
if ($error->getErrorCode() === 'PER_SECOND_THRESHOLD') { |
|
|
|
|
229
|
|
|
// We've run into the "Max 25 API calls per institution per second" limit. |
230
|
|
|
// Wait a sec and retry, unless we've tried too many times already. |
231
|
|
|
if ($attempt > $this->maxAttempts) { |
232
|
|
|
throw new MaxNumberOfAttemptsExhausted( |
233
|
|
|
'Rate limiting error - max number of retry attempts exhausted.', |
234
|
|
|
0, |
235
|
|
|
$e |
236
|
|
|
); |
237
|
|
|
} |
238
|
|
|
time_nanosleep(0, $this->sleepTimeOnRetry * 1000000000); |
239
|
|
|
return $this->request($request, $attempt + 1); |
240
|
|
|
} |
241
|
|
|
|
242
|
|
|
// Throw exception for other 4XX errors |
243
|
|
|
throw $error; |
244
|
|
|
|
245
|
|
|
} catch (NetworkException $e) { |
246
|
|
|
// Thrown in case of a networking error |
247
|
|
|
// Wait a sec and retry, unless we've tried too many times already. |
248
|
|
|
if ($attempt > $this->maxAttempts) { |
249
|
|
|
throw new MaxNumberOfAttemptsExhausted( |
250
|
|
|
'Network error - max number of retry attempts exhausted.', |
251
|
|
|
0, |
252
|
|
|
$e |
253
|
|
|
); |
254
|
|
|
} |
255
|
|
|
time_nanosleep(0, $this->sleepTimeOnRetry * 1000000000); |
256
|
|
|
return $this->request($request, $attempt + 1); |
257
|
|
|
} |
258
|
|
|
} |
259
|
|
|
|
260
|
|
|
/** |
261
|
|
|
* Make a GET request. |
262
|
|
|
* |
263
|
|
|
* @param string $url|UriInterface |
|
|
|
|
264
|
|
|
* @param array $query |
265
|
|
|
* @param string $contentType |
266
|
|
|
* |
267
|
|
|
* @return string Response body |
268
|
|
|
*/ |
269
|
|
|
public function get($url, $query = [], $contentType = 'application/json') |
270
|
|
|
{ |
271
|
|
|
$url = $this->buildUrl($url, $query); |
272
|
|
|
$headers = [ |
273
|
|
|
'Accept' => $contentType, |
274
|
|
|
]; |
275
|
|
|
$request = $this->messageFactory->createRequest('GET', $url, $headers); |
276
|
|
|
$response = $this->request($request); |
277
|
|
|
|
278
|
|
|
return strval($response->getBody()); |
279
|
|
|
} |
280
|
|
|
|
281
|
|
|
/** |
282
|
|
|
* Make a GET request, accepting JSON. |
283
|
|
|
* |
284
|
|
|
* @param string $url |
285
|
|
|
* @param array $query |
286
|
|
|
* |
287
|
|
|
* @return \stdClass JSON response as an object. |
288
|
|
|
*/ |
289
|
|
|
public function getJSON($url, $query = []) |
290
|
|
|
{ |
291
|
|
|
$responseBody = $this->get($url, $query, 'application/json'); |
292
|
|
|
|
293
|
|
|
return json_decode($responseBody); |
294
|
|
|
} |
295
|
|
|
|
296
|
|
|
/** |
297
|
|
|
* Make a GET request, accepting XML. |
298
|
|
|
* |
299
|
|
|
* @param string $url |
300
|
|
|
* @param array $query |
301
|
|
|
* |
302
|
|
|
* @return QuiteSimpleXMLElement |
303
|
|
|
*/ |
304
|
|
|
public function getXML($url, $query = []) |
305
|
|
|
{ |
306
|
|
|
$responseBody = $this->get($url, $query, 'application/xml'); |
307
|
|
|
|
308
|
|
|
return new QuiteSimpleXMLElement($responseBody); |
309
|
|
|
} |
310
|
|
|
|
311
|
|
|
/** |
312
|
|
|
* Make a PUT request. |
313
|
|
|
* |
314
|
|
|
* @param string $url |
315
|
|
|
* @param $data |
316
|
|
|
* @param string $contentType |
317
|
|
|
* |
318
|
|
|
* @return bool |
319
|
|
|
*/ |
320
|
|
View Code Duplication |
public function put($url, $data, $contentType = 'application/json') |
|
|
|
|
321
|
|
|
{ |
322
|
|
|
$uri = $this->buildUrl($url); |
323
|
|
|
$headers = []; |
324
|
|
|
if (!is_null($contentType)) { |
325
|
|
|
$headers['Content-Type'] = $contentType; |
326
|
|
|
$headers['Accept'] = $contentType; |
327
|
|
|
} |
328
|
|
|
$request = $this->messageFactory->createRequest('PUT', $uri, $headers, $data); |
329
|
|
|
$response = $this->request($request); |
330
|
|
|
|
331
|
|
|
// Consider it a success if status code is 2XX |
332
|
|
|
return substr($response->getStatusCode(), 0, 1) == '2'; |
333
|
|
|
} |
334
|
|
|
|
335
|
|
|
/** |
336
|
|
|
* Make a PUT request, sending JSON data. |
337
|
|
|
* |
338
|
|
|
* @param string $url |
339
|
|
|
* @param $data |
340
|
|
|
* |
341
|
|
|
* @return bool |
342
|
|
|
*/ |
343
|
|
|
public function putJSON($url, $data) |
344
|
|
|
{ |
345
|
|
|
$data = json_encode($data); |
346
|
|
|
|
347
|
|
|
return $this->put($url, $data, 'application/json'); |
348
|
|
|
} |
349
|
|
|
|
350
|
|
|
/** |
351
|
|
|
* Make a PUT request, sending XML data. |
352
|
|
|
* |
353
|
|
|
* @param string $url |
354
|
|
|
* @param $data |
355
|
|
|
* |
356
|
|
|
* @return bool |
357
|
|
|
*/ |
358
|
|
|
public function putXML($url, $data) |
359
|
|
|
{ |
360
|
|
|
return $this->put($url, $data, 'application/xml'); |
361
|
|
|
} |
362
|
|
|
|
363
|
|
|
/** |
364
|
|
|
* Make a POST request. |
365
|
|
|
* |
366
|
|
|
* @param string $url |
367
|
|
|
* @param $data |
368
|
|
|
* @param string $contentType |
369
|
|
|
* |
370
|
|
|
* @return bool |
371
|
|
|
*/ |
372
|
|
View Code Duplication |
public function post($url, $data, $contentType = 'application/json') |
|
|
|
|
373
|
|
|
{ |
374
|
|
|
$uri = $this->buildUrl($url); |
375
|
|
|
$headers = []; |
376
|
|
|
if (!is_null($contentType)) { |
377
|
|
|
$headers['Content-Type'] = $contentType; |
378
|
|
|
$headers['Accept'] = $contentType; |
379
|
|
|
} |
380
|
|
|
$request = $this->messageFactory->createRequest('POST', $uri, $headers, $data); |
381
|
|
|
$response = $this->request($request); |
382
|
|
|
|
383
|
|
|
// Consider it a success if status code is 2XX |
384
|
|
|
return substr($response->getStatusCode(), 0, 1) == '2'; |
385
|
|
|
} |
386
|
|
|
|
387
|
|
|
/** |
388
|
|
|
* Make a POST request, sending JSON data. |
389
|
|
|
* |
390
|
|
|
* @param string $url |
391
|
|
|
* @param $data |
392
|
|
|
* |
393
|
|
|
* @return bool |
394
|
|
|
*/ |
395
|
|
|
public function postJSON($url, $data = null) |
396
|
|
|
{ |
397
|
|
|
$data = json_encode($data); |
398
|
|
|
|
399
|
|
|
return $this->post($url, $data, 'application/json'); |
400
|
|
|
} |
401
|
|
|
|
402
|
|
|
/** |
403
|
|
|
* Make a POST request, sending XML data. |
404
|
|
|
* |
405
|
|
|
* @param string $url |
406
|
|
|
* @param $data |
407
|
|
|
* |
408
|
|
|
* @return bool |
409
|
|
|
*/ |
410
|
|
|
public function postXML($url, $data = null) |
411
|
|
|
{ |
412
|
|
|
return $this->post($url, $data, 'application/xml'); |
413
|
|
|
} |
414
|
|
|
|
415
|
|
|
/** |
416
|
|
|
* Get the redirect target location of an URL, or null if not a redirect. |
417
|
|
|
* |
418
|
|
|
* @param string $url |
419
|
|
|
* @param array $query |
420
|
|
|
* |
421
|
|
|
* @return string|null |
422
|
|
|
*/ |
423
|
|
|
public function getRedirectLocation($url, $query = []) |
424
|
|
|
{ |
425
|
|
|
$url = $this->buildUrl($url, $query); |
426
|
|
|
|
427
|
|
|
$request = $this->messageFactory->createRequest('GET', $url); |
428
|
|
|
|
429
|
|
|
try { |
430
|
|
|
$response = $this->request($request); |
431
|
|
|
} catch (ResourceNotFound $e) { |
432
|
|
|
return; |
433
|
|
|
} |
434
|
|
|
|
435
|
|
|
$locations = $response->getHeader('Location'); |
436
|
|
|
|
437
|
|
|
return count($locations) ? $locations[0] : null; |
438
|
|
|
} |
439
|
|
|
|
440
|
|
|
/** |
441
|
|
|
* @param class $className |
442
|
|
|
* @param array ...$params |
443
|
|
|
* @return mixed |
444
|
|
|
*/ |
445
|
|
|
public function make($className, ...$params) |
446
|
|
|
{ |
447
|
|
|
return new $className($this, ...$params); |
448
|
|
|
} |
449
|
|
|
|
450
|
|
|
/** |
451
|
|
|
* Generate a client exception. |
452
|
|
|
* |
453
|
|
|
* @param HttpClientErrorException $exception |
454
|
|
|
* @return RequestFailed |
455
|
|
|
*/ |
456
|
|
|
protected function parseClientError(HttpClientErrorException $exception) |
457
|
|
|
{ |
458
|
|
|
$contentType = explode(';', $exception->getResponse()->getHeaderLine('Content-Type'))[0]; |
459
|
|
|
$responseBody = (string) $exception->getResponse()->getBody(); |
460
|
|
|
|
461
|
|
|
switch ($contentType) { |
462
|
|
|
case 'application/json': |
463
|
|
|
$res = json_decode($responseBody, true); |
464
|
|
|
$err = $res['errorList']['error'][0]; |
465
|
|
|
$message = $err['errorMessage']; |
466
|
|
|
$code = $err['errorCode']; |
467
|
|
|
break; |
468
|
|
|
|
469
|
|
|
case 'application/xml': |
470
|
|
|
$xml = new QuiteSimpleXMLElement($responseBody); |
471
|
|
|
$xml->registerXPathNamespace('xb', 'http://com/exlibris/urm/general/xmlbeans'); |
472
|
|
|
|
473
|
|
|
$message = $xml->text('//xb:errorMessage'); |
474
|
|
|
$code = $xml->text('//xb:errorCode'); |
475
|
|
|
break; |
476
|
|
|
|
477
|
|
|
default: |
478
|
|
|
$message = $responseBody; |
479
|
|
|
$code = ''; |
480
|
|
|
} |
481
|
|
|
|
482
|
|
|
// The error code is often an integer, but sometimes a string, |
483
|
|
|
// so we generalize it as a string. |
484
|
|
|
$code = empty($code) ? null : (string) $code; |
485
|
|
|
|
486
|
|
|
if (strtolower($message) == 'invalid api key') { |
487
|
|
|
return new InvalidApiKey($message, null, $exception); |
488
|
|
|
} |
489
|
|
|
|
490
|
|
|
if (preg_match('/no items? found/i', $message)) { |
491
|
|
|
return new ResourceNotFound($message, $code, $exception); |
492
|
|
|
} |
493
|
|
|
|
494
|
|
|
return new RequestFailed($message, $code, $exception); |
495
|
|
|
} |
496
|
|
|
} |
497
|
|
|
|
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: