-
Notifications
You must be signed in to change notification settings - Fork 7
/
fdsndatacenters.ts
653 lines (593 loc) · 19.4 KB
/
fdsndatacenters.ts
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
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
/*
* Philip Crotwell
* University of South Carolina, 2019
* http://www.seis.sc.edu
*/
import {FDSNCommon} from './fdsncommon';
import {
doStringGetterSetter,
doBoolGetterSetter,
doFloatGetterSetter,
doIntGetterSetter,
makeParam,
isDef,
isNonEmptyStringArg,
} from "./util";
import {
TEXT_MIME,
JSON_MIME,
doFetchWithTimeout,
defaultFetchInitObj,
} from "./util";
import * as fdsnavailability from "./fdsnavailability";
import * as fdsndataselect from "./fdsndataselect";
import * as fdsnevent from "./fdsnevent";
import * as fdsnstation from "./fdsnstation";
/** const for fdsn web service host, www.fdsn.org */
export const FDSN_HOST = "www.fdsn.org";
/**
* Query to a FDSN Data Centers Registry web service.
*
* @see http://www.fdsn.org/webservices/
* @param host optional host to connect to, defaults to FDSN
*/
export class DataCentersQuery extends FDSNCommon {
/** @private */
_name: string|undefined;
/** @private */
_services: string|undefined;
/** @private */
_includedatasets: boolean|undefined;
constructor(host?: string) {
if ( ! isNonEmptyStringArg(host)) {
host = FDSN_HOST;
}
super(host);
}
/**
* Gets/Sets the version of the fdsnws spec, 1 is currently the only value.
* Setting this is probably a bad idea as the code may not be compatible with
* the web service.
*
* @param value optional new value if setting
* @returns the query when setting, the current value os services if no arguments
*/
specVersion(value?: string): DataCentersQuery {
doStringGetterSetter(this, "specVersion", value);
return this;
}
getSpecVersion(): string {
return this._specVersion;
}
/**
* Gets/Sets the protocol, http or https. This should match the protocol
* of the page loaded, but is autocalculated and generally need not be set.
*
* @param value optional new value if setting
* @returns the query when setting, the current value os services if no arguments
*/
protocol(value?: string): DataCentersQuery {
doStringGetterSetter(this, "protocol", value);
return this;
}
getProtocol(): string | undefined {
return this._protocol;
}
/**
* Gets/Sets the remote host to connect to. This defaults to
* www.fdsn.org and generally should not be set.
*
* @param value optional new value if setting
* @returns the query when setting, the current value os services if no arguments
*/
host(value?: string): DataCentersQuery {
doStringGetterSetter(this, "host", value);
return this;
}
getHost(): string {
return this._host;
}
/**
* Gets/Sets the remote port to connect to. This defaults to
* the standard port for the protocol and generally should not be set.
*
* @param value optional new value if setting
* @returns the query when setting, the current value os services if no arguments
*/
port(value?: number): DataCentersQuery {
doIntGetterSetter(this, "port", value);
return this;
}
getPort(): number | undefined {
return this._port;
}
/**
* limits results to the named data center, default is all data centers
*
* @param value names to search for
* @returns the query when setting, the current value os services if no arguments
*/
name(value?: string): DataCentersQuery {
doStringGetterSetter(this, "name", value);
return this;
}
getName(): string | undefined {
return this._name;
}
/**
* limits results to services that match the glob style pattern
*
* @param value glob style pattern to match against
* @returns the query when setting, the current value os services if no arguments
*/
services(value?: string): DataCentersQuery {
doStringGetterSetter(this, "services", value);
return this;
}
getServices(): string | undefined {
return this._services;
}
/**
* whether the results include detailed information about
* the data sets offered by each center, default is false
*
* @param value true to include datasets
* @returns the query when setting, the current value os services if no arguments
*/
includeDataSets(value?: boolean): DataCentersQuery {
doBoolGetterSetter(this, "includedatasets", value);
return this;
}
getIncludeDataSets(): boolean | undefined {
return this._includedatasets;
}
/**
* Get/Set the timeout in seconds for the request. Default is 30.
*
* @param value timeout seconds
* @returns the query when setting, the current value os services if no arguments
*/
timeout(value?: number): DataCentersQuery {
doFloatGetterSetter(this, "timeoutSec", value);
return this;
}
getTimeout(): number | undefined {
return this._timeoutSec;
}
/**
* queries the fdsn registry web service, returning the result as a parsed json object.
*
* @returns Promise to the json object.
*/
queryJson(): Promise<RootType> {
const url = this.formURL();
const fetchInit = defaultFetchInitObj(JSON_MIME);
return doFetchWithTimeout(url, fetchInit, this._timeoutSec * 1000).then(
function (response) {
const contentType = response.headers.get("content-type");
if (
isNonEmptyStringArg(contentType) &&
contentType.includes(JSON_MIME)
) {
return response.json();
}
throw new TypeError(`Oops, we did not get JSON! ${contentType}`);
},
);
}
/**
* queries the registry to find fdsn availability compatible web services within
* a datacenter of the given name, optionally within the repository with
* the repo name.
*
* @param name datacenter name
* @param repoName optional repository name
* @returns Promise to Array of fdsnavailability.AvailabilityQuery objects
*/
findFdsnAvailability(
name: string,
repoName?: string,
): Promise<Array<fdsnavailability.AvailabilityQuery>> {
if (name && name.length > 0) {
this.name(name);
}
this.services(fdsnavailability.SERVICE_NAME);
return this.queryJson().then(json => {
const out = this.extractCompatibleServices(
json,
fdsnavailability.SERVICE_NAME,
repoName,
);
return out.map(service => {
const url = new URL(service.url);
const q = new fdsnavailability.AvailabilityQuery(url.hostname);
if (url.port && url.port.length > 0) {
q.port(Number.parseInt(url.port));
}
return q;
});
});
}
/**
* queries the registry to find fdsn dataselect compatible web services within
* a datacenter of the given name, optionally within the repository with
* the repo name.
*
* @param name datacenter name
* @param repoName optional repository name
* @returns Promise to Array of fdsndataselect.DataSelectQuery objects
*/
findFdsnDataSelect(
name: string,
repoName?: string,
): Promise<Array<fdsndataselect.DataSelectQuery>> {
if (name && name.length > 0) {
this.name(name);
}
this.services(fdsndataselect.SERVICE_NAME);
return this.queryJson().then(json => {
const out = this.extractCompatibleServices(
json,
fdsndataselect.SERVICE_NAME,
repoName,
);
return out.map(service => {
const url = new URL(service.url);
const q = new fdsndataselect.DataSelectQuery(url.hostname);
if (url.port && url.port.length > 0) {
q.port(Number.parseInt(url.port));
}
return q;
});
});
}
/**
* queries the registry to find a fdsn event compatible web services within
* a datacenter of the given name, optionally within the repository with
* the repo name.
*
* @param dcname datacenter name
* @param repoName optional repository name
* @returns Promise to Array of fdsnevent.EventQuery objects
*/
findFdsnEvent(
dcname: string,
repoName?: string,
): Promise<Array<fdsnevent.EventQuery>> {
if (dcname && dcname.length > 0) {
this.name(dcname);
}
this.services(fdsnevent.SERVICE_NAME);
return this.queryJson().then(json => {
const out = this.extractCompatibleServices(
json,
fdsnevent.SERVICE_NAME,
repoName,
);
return out.map(service => {
const url = new URL(service.url);
const q = new fdsnevent.EventQuery(url.hostname);
if (url.port && url.port.length > 0) {
q.port(Number.parseInt(url.port));
}
return q;
});
});
}
/**
* queries the registry to find a fdsn station compatible web services within
* a datacenter of the given name, optionally within the repository with
* the repo name.
*
* @param dcname datacenter name
* @param repoName optional repository name
* @returns Promise to Array of fdsnstation.StationQuery objects
*/
findFdsnStation(
dcname: string,
repoName?: string,
): Promise<Array<fdsnstation.StationQuery>> {
if (dcname && dcname.length > 0) {
this.name(dcname);
}
this.services(fdsnstation.SERVICE_NAME);
return this.queryJson().then(json => {
const out = this.extractCompatibleServices(
json,
fdsnstation.SERVICE_NAME,
repoName,
);
return out.map(service => {
const url = new URL(service.url);
const q = new fdsnstation.StationQuery(url.hostname);
if (url.port && url.port.length > 0) {
q.port(Number.parseInt(url.port));
}
return q;
});
});
}
/**
* Extracts services comaptible with the given service name, optionally within
* the given repository, from the json.
*
* @param json json containing services
* @param compatibleName service name to be compatible with
* @param repoName optional repository within the json to search
* @returns array of services found
*/
extractCompatibleServices(
json: RootType,
compatibleName: string,
repoName?: string,
): Array<any> {
const out: Array<any> = [];
json.datacenters.forEach(dc => {
dc.repositories.forEach(repo => {
if (!isDef(repoName) || repoName === repo.name) {
repo.services.forEach(service => {
if (
service.name === compatibleName ||
(isDef(service.compatibleWith) &&
service.compatibleWith.includes(compatibleName))
) {
out.push(service);
}
});
}
});
});
return out;
}
/**
* Forms the base of the url for accessing the datacenters service.
*
* @returns URL
*/
formBaseURL(): string {
let colon = ":";
if (this._protocol.endsWith(colon)) {
colon = "";
}
return (
this._protocol +
colon +
"//" +
this._host +
(this._port === 80 ? "" : ":" + this._port) +
"/ws/datacenters/" +
this._specVersion
);
}
/**
* Forms version url, not part of spec and so may not be supported.
*
* @returns version
*/
formVersionURL(): string {
return this.formBaseURL() + "/version";
}
/**
* Queries the remote web service to get its version
*
* @returns Promise to version string
*/
queryVersion(): Promise<string> {
const url = this.formVersionURL();
const fetchInit = defaultFetchInitObj(TEXT_MIME);
return doFetchWithTimeout(url, fetchInit, this._timeoutSec * 1000).then(
response => {
if (response.status === 200) {
return response.text();
} else {
throw new Error(`Status not 200: ${response.status}`);
}
},
);
}
/**
* forms a url to the fdsn registry based on the configured parameters.
*
* @returns the url
*/
formURL(): string {
const method = "query";
let url = this.formBaseURL() + `/${method}?`;
if (this._name) {
url = url + makeParam("name", this._name);
}
if (this._services) {
url = url + makeParam("services", this._services);
}
if (this._includedatasets) {
url = url + makeParam("includedatasets", this._includedatasets);
}
if (url.endsWith("&") || url.endsWith("?")) {
url = url.substr(0, url.length - 1); // zap last & or ?
}
return url;
}
}
/* original json schema from
https://github.com/FDSN/datacenter-registry
{
"$schema": "http://json-schema.org/draft-07/schema#",
"id": "http://www.fdsn.org/schemas/FDSN-datacenter-registry-1.0.schema.json",
"description": "Data center registry exchange format",
"definitions": {
"services": {
"type": "array",
"items": {
"type": "object",
"additionalProperties": false,
"required": ["name"],
"properties": {
"name": {
"description": "Service name (no white space)",
"type": "string",
"pattern": "^[-_a-zA-Z0-9]+$"
},
"description": {
"description": "Description of service",
"type": "string"
},
"url": {
"description": "URL to web service, ideally with documentation",
"type": "string",
"format": "uri"
},
"compatibleWith": {
"description": "Description of service compatibility with a standard or alternate service (e.g. fdsnws-dataselect, fdsnws-station, fdsnws-event)",
"type": "string"
}
}
}
}
},
"type": "object",
"required": ["version", "datacenters"],
"properties": {
"version": {
"description": "Data center registry message format version",
"const": 1.0
},
"datacenters": {
"type": "array",
"items": {
"type": "object",
"additionalProperties": false,
"required": [
"name",
"website"
],
"properties": {
"name": {
"description": "Data center name (no white space)",
"type": "string",
"pattern": "^[-_a-zA-Z0-9]+$"
},
"website": {
"description": "URL to data center website",
"type": "string",
"format": "uri"
},
"fullName": {
"description": "Full name of data center",
"type": "string"
},
"summary": {
"description": "Summary of data center",
"type": "string"
},
"repositories": {
"description": "Repositories of data center",
"type": "array",
"items": {
"type": "object",
"additionalProperties": false,
"required": ["name"],
"properties": {
"name": {
"description": "Repository name (no white space)",
"type": "string",
"pattern": "^[-_a-zA-Z0-9]+$"
},
"description": {
"description": "Description of repository",
"type": "string"
},
"website": {
"description": "URL to repository website",
"type": "string",
"format": "uri"
},
"services": {"$ref": "#/definitions/services"},
"datasets": {
"description": "Data sets offered by the data center",
"type": "array",
"items": {
"type": "object",
"additionalProperties": false,
"properties": {
"network": {"type": "string"},
"station": {"type": "string"},
"location": {"type": "string"},
"channel": {"type": "string"},
"starttime": {
"type": "string",
"format": "date-time"
},
"endtime": {
"type": "string",
"format": "date-time"
},
"priority": {
"description": "Priority of data center for this data set, with 1 being highest",
"type": "integer"
},
"description": {
"description": "Description of data set",
"type": "string"
},
"url": {
"description": "URL to data set or summary page",
"type": "string",
"format": "uri"
},
"services": {
"description": "Services for this data set, overriding repository service declarations",
"$ref": "#/definitions/services"
}
}
}
}
}
}
}
}
}
}
}
}
*/
/* The below are slighly modified from json schema to flow autogenerator.
*
* */
/**
* Root type of fdsn datacenters json query.
*/
export type RootType = {
version: Record<string, any>;
datacenters: Array<{
name: string;
website: string;
fullName?: string;
summary?: string;
repositories: Array<Repository>;
}>;
} & Record<string, any>;
export type Repository = {
name: string;
description?: string;
website?: string;
services: Array<Service>;
datasets?: Array<Dataset>;
};
export type Dataset = {
network?: string;
station?: string;
location?: string;
channel?: string;
starttime?: string;
endtime?: string;
priority?: number;
description?: string;
url?: string;
services?: Array<Service>;
};
export type Service = {
name: string;
description?: string;
url?: string;
compatibleWith?: string;
};