summaryrefslogtreecommitdiffstats
path: root/toolkit/mozapps/update/UpdateTelemetry.sys.mjs
blob: 20fb0ab4a431e707ed4908530429379c7fc25117 (plain)
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
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";

import {
  BitsError,
  BitsUnknownError,
} from "resource://gre/modules/Bits.sys.mjs";

export var AUSTLMY = {
  // Telemetry for the application update background update check occurs when
  // the background update timer fires after the update interval which is
  // determined by the app.update.interval preference and its telemetry
  // histogram IDs have the suffix '_NOTIFY'.
  // Telemetry for the externally initiated background update check occurs when
  // a call is made to |checkForBackgroundUpdates| which is typically initiated
  // by an application when it has determined that the application should have
  // received an update. This has separate telemetry so it is possible to
  // analyze using the telemetry data systems that have not been updating when
  // they should have.

  // The update check was performed by the call to checkForBackgroundUpdates in
  // nsUpdateService.js.
  EXTERNAL: "EXTERNAL",
  // The update check was performed by the call to notify in nsUpdateService.js.
  NOTIFY: "NOTIFY",
  // The update check was performed after an update is already ready. There is
  // currently no way for a user to initiate an update check when there is a
  // ready update (the UI just prompts you to install the ready update). So
  // subsequent update checks are necessarily "notify" update checks, not
  // "external" ones.
  SUBSEQUENT: "SUBSEQUENT",

  /**
   * Values for the UPDATE_CHECK_CODE_NOTIFY and UPDATE_CHECK_CODE_EXTERNAL
   * Telemetry histograms.
   */
  // No update found (no notification)
  CHK_NO_UPDATE_FOUND: 0,
  // Update will be downloaded in the background (background download)
  CHK_DOWNLOAD_UPDATE: 1,
  // Showing prompt due to preference (update notification)
  CHK_SHOWPROMPT_PREF: 3,
  // Already has an active update in progress (no notification)
  CHK_HAS_ACTIVEUPDATE: 8,
  // A background download is already in progress (no notification)
  CHK_IS_DOWNLOADING: 9,
  // An update is already staged (no notification)
  CHK_IS_STAGED: 10,
  // An update is already downloaded (no notification)
  CHK_IS_DOWNLOADED: 11,
  // Note: codes 12-13 were removed along with the |app.update.enabled| pref.
  // Unable to check for updates per hasUpdateMutex() (no notification)
  CHK_NO_MUTEX: 14,
  // Unable to check for updates per gCanCheckForUpdates (no notification). This
  // should be covered by other codes and is recorded just in case.
  CHK_UNABLE_TO_CHECK: 15,
  // Note: code 16 was removed when the feature for disabling updates for the
  // session was removed.
  // Unable to perform a background check while offline (no notification)
  CHK_OFFLINE: 17,
  // Note: codes 18 - 21 were removed along with the certificate checking code.
  // General update check failure and threshold reached
  // (check failure notification)
  CHK_GENERAL_ERROR_PROMPT: 22,
  // General update check failure and threshold not reached (no notification)
  CHK_GENERAL_ERROR_SILENT: 23,
  // No compatible update found though there were updates (no notification)
  CHK_NO_COMPAT_UPDATE_FOUND: 24,
  // Update found for a previous version (no notification)
  CHK_UPDATE_PREVIOUS_VERSION: 25,
  // Update found without a type attribute (no notification)
  CHK_UPDATE_INVALID_TYPE: 27,
  // The system is no longer supported (system unsupported notification)
  CHK_UNSUPPORTED: 28,
  // Unable to apply updates (manual install to update notification)
  CHK_UNABLE_TO_APPLY: 29,
  // Unable to check for updates due to no OS version (no notification)
  CHK_NO_OS_VERSION: 30,
  // Unable to check for updates due to no OS ABI (no notification)
  CHK_NO_OS_ABI: 31,
  // Invalid update url (no notification)
  CHK_INVALID_DEFAULT_URL: 32,
  // Update elevation failures or cancelations threshold reached for this
  // version, OSX only (no notification)
  CHK_ELEVATION_DISABLED_FOR_VERSION: 35,
  // User opted out of elevated updates for the available update version, OSX
  // only (no notification)
  CHK_ELEVATION_OPTOUT_FOR_VERSION: 36,
  // Update checks disabled by enterprise policy
  CHK_DISABLED_BY_POLICY: 37,
  // Update check failed due to write error
  CHK_ERR_WRITE_FAILURE: 38,
  // Update check was delayed because another instance of the application is
  // currently running
  CHK_OTHER_INSTANCE: 39,
  // Cannot yet download update because no partial patch is available and an
  // update has already been downloaded.
  CHK_NO_PARTIAL_PATCH: 40,

  /**
   * Submit a telemetry ping for the update check result code or a telemetry
   * ping for a count type histogram count when no update was found. The no
   * update found ping is separate since it is the typical result, is less
   * interesting than the other result codes, and it is easier to analyze the
   * other codes without including it.
   *
   * @param  aSuffix
   *         The histogram id suffix for histogram IDs:
   *         UPDATE_CHECK_CODE_EXTERNAL
   *         UPDATE_CHECK_CODE_NOTIFY
   *         UPDATE_CHECK_CODE_SUBSEQUENT
   *         UPDATE_CHECK_NO_UPDATE_EXTERNAL
   *         UPDATE_CHECK_NO_UPDATE_NOTIFY
   *         UPDATE_CHECK_NO_UPDATE_SUBSEQUENT
   * @param  aCode
   *         An integer value as defined by the values that start with CHK_ in
   *         the above section.
   */
  pingCheckCode: function UT_pingCheckCode(aSuffix, aCode) {
    try {
      if (aCode == this.CHK_NO_UPDATE_FOUND) {
        let id = "UPDATE_CHECK_NO_UPDATE_" + aSuffix;
        // count type histogram
        Services.telemetry.getHistogramById(id).add();
      } else {
        let id = "UPDATE_CHECK_CODE_" + aSuffix;
        // enumerated type histogram
        Services.telemetry.getHistogramById(id).add(aCode);
      }
    } catch (e) {
      console.error(e);
    }
  },

  /**
   * Submit a telemetry ping for a failed update check's unhandled error code
   * when the pingCheckCode is CHK_GENERAL_ERROR_SILENT. The histogram is a
   * keyed count type with key names that are prefixed with 'AUS_CHECK_EX_ERR_'.
   *
   * @param  aSuffix
   *         The histogram id suffix for histogram IDs:
   *         UPDATE_CHECK_EXTENDED_ERROR_EXTERNAL
   *         UPDATE_CHECK_EXTENDED_ERROR_NOTIFY
   *         UPDATE_CHECK_EXTENDED_ERROR_SUBSEQUENT
   * @param  aCode
   *         The extended error value return by a failed update check.
   */
  pingCheckExError: function UT_pingCheckExError(aSuffix, aCode) {
    try {
      let id = "UPDATE_CHECK_EXTENDED_ERROR_" + aSuffix;
      let val = "AUS_CHECK_EX_ERR_" + aCode;
      // keyed count type histogram
      Services.telemetry.getKeyedHistogramById(id).add(val);
    } catch (e) {
      console.error(e);
    }
  },

  // The state code and if present the status error code were read on startup.
  STARTUP: "STARTUP",
  // The state code and status error code if present were read after staging.
  STAGE: "STAGE",

  // Patch type Complete
  PATCH_COMPLETE: "COMPLETE",
  // Patch type partial
  PATCH_PARTIAL: "PARTIAL",
  // Patch type unknown
  PATCH_UNKNOWN: "UNKNOWN",

  /**
   * Values for the UPDATE_DOWNLOAD_CODE_COMPLETE, UPDATE_DOWNLOAD_CODE_PARTIAL,
   * and UPDATE_DOWNLOAD_CODE_UNKNOWN Telemetry histograms.
   */
  DWNLD_SUCCESS: 0,
  DWNLD_RETRY_OFFLINE: 1,
  DWNLD_RETRY_NET_TIMEOUT: 2,
  DWNLD_RETRY_CONNECTION_REFUSED: 3,
  DWNLD_RETRY_NET_RESET: 4,
  DWNLD_ERR_NO_UPDATE: 5,
  DWNLD_ERR_NO_UPDATE_PATCH: 6,
  DWNLD_ERR_PATCH_SIZE_LARGER: 8,
  DWNLD_ERR_PATCH_SIZE_NOT_EQUAL: 9,
  DWNLD_ERR_BINDING_ABORTED: 10,
  DWNLD_ERR_ABORT: 11,
  DWNLD_ERR_DOCUMENT_NOT_CACHED: 12,
  DWNLD_ERR_VERIFY_NO_REQUEST: 13,
  DWNLD_ERR_VERIFY_PATCH_SIZE_NOT_EQUAL: 14,
  DWNLD_ERR_WRITE_FAILURE: 15,
  // Temporary failure code to see if there are failures without an update phase
  DWNLD_UNKNOWN_PHASE_ERR_WRITE_FAILURE: 40,

  /**
   * Submit a telemetry ping for the update download result code.
   *
   * @param  aIsComplete
   *         If true the histogram is for a patch type complete, if false the
   *         histogram is for a patch type partial, and when undefined the
   *         histogram is for an unknown patch type. This is used to determine
   *         the histogram ID out of the following histogram IDs:
   *         UPDATE_DOWNLOAD_CODE_COMPLETE
   *         UPDATE_DOWNLOAD_CODE_PARTIAL
   *         UPDATE_DOWNLOAD_CODE_UNKNOWN
   * @param  aCode
   *         An integer value as defined by the values that start with DWNLD_ in
   *         the above section.
   */
  pingDownloadCode: function UT_pingDownloadCode(aIsComplete, aCode) {
    let patchType = this.PATCH_UNKNOWN;
    if (aIsComplete === true) {
      patchType = this.PATCH_COMPLETE;
    } else if (aIsComplete === false) {
      patchType = this.PATCH_PARTIAL;
    }
    try {
      let id = "UPDATE_DOWNLOAD_CODE_" + patchType;
      // enumerated type histogram
      Services.telemetry.getHistogramById(id).add(aCode);
    } catch (e) {
      console.error(e);
    }
  },

  // Previous state codes are defined in pingStateAndStatusCodes() in
  // nsUpdateService.js
  STATE_WRITE_FAILURE: 14,

  /**
   * Submit a telemetry ping for the update status state code.
   *
   * @param  aSuffix
   *         The histogram id suffix for histogram IDs:
   *         UPDATE_STATE_CODE_COMPLETE_STARTUP
   *         UPDATE_STATE_CODE_PARTIAL_STARTUP
   *         UPDATE_STATE_CODE_UNKNOWN_STARTUP
   *         UPDATE_STATE_CODE_COMPLETE_STAGE
   *         UPDATE_STATE_CODE_PARTIAL_STAGE
   *         UPDATE_STATE_CODE_UNKNOWN_STAGE
   * @param  aCode
   *         An integer value as defined by the values that start with STATE_ in
   *         the above section for the update state from the update.status file.
   */
  pingStateCode: function UT_pingStateCode(aSuffix, aCode) {
    try {
      let id = "UPDATE_STATE_CODE_" + aSuffix;
      // enumerated type histogram
      Services.telemetry.getHistogramById(id).add(aCode);
    } catch (e) {
      console.error(e);
    }
  },

  /**
   * Submit a telemetry ping for the update status error code. This does not
   * submit a success value which can be determined from the state code.
   *
   * @param  aSuffix
   *         The histogram id suffix for histogram IDs:
   *         UPDATE_STATUS_ERROR_CODE_COMPLETE_STARTUP
   *         UPDATE_STATUS_ERROR_CODE_PARTIAL_STARTUP
   *         UPDATE_STATUS_ERROR_CODE_UNKNOWN_STARTUP
   *         UPDATE_STATUS_ERROR_CODE_COMPLETE_STAGE
   *         UPDATE_STATUS_ERROR_CODE_PARTIAL_STAGE
   *         UPDATE_STATUS_ERROR_CODE_UNKNOWN_STAGE
   * @param  aCode
   *         An integer value for the error code from the update.status file.
   */
  pingStatusErrorCode: function UT_pingStatusErrorCode(aSuffix, aCode) {
    try {
      let id = "UPDATE_STATUS_ERROR_CODE_" + aSuffix;
      // enumerated type histogram
      Services.telemetry.getHistogramById(id).add(aCode);
    } catch (e) {
      console.error(e);
    }
  },

  /**
   * Submit a telemetry ping for a failing binary transparency result.
   *
   * @param  aSuffix
   *         Key to use on the update.binarytransparencyresult collection.
   *         Must be one of "COMPLETE_STARTUP", "PARTIAL_STARTUP",
   *         "UNKNOWN_STARTUP", "COMPLETE_STAGE", "PARTIAL_STAGE",
   *         "UNKNOWN_STAGE".
   * @param  aCode
   *         An integer value for the error code from the update.bt file.
   */
  pingBinaryTransparencyResult: function UT_pingBinaryTransparencyResult(
    aSuffix,
    aCode
  ) {
    try {
      let id = "update.binarytransparencyresult";
      let key = aSuffix.toLowerCase().replace("_", "-");
      Services.telemetry.keyedScalarSet(id, key, aCode);
    } catch (e) {
      console.error(e);
    }
  },

  /**
   * Records a failed BITS update download using Telemetry.
   * In addition to the BITS Result histogram, this also sends an
   * update.bitshresult scalar value.
   *
   * @param aIsComplete
   *        If true the histogram is for a patch type complete, if false the
   *        histogram is for a patch type partial. This will determine the
   *        histogram id out of the following histogram ids:
   *        UPDATE_BITS_RESULT_COMPLETE
   *        UPDATE_BITS_RESULT_PARTIAL
   *        This value is also used to determine the key for the keyed scalar
   *        update.bitshresult (key is either "COMPLETE" or "PARTIAL")
   * @param aError
   *        The BitsError that occurred. See Bits.jsm for details on BitsError.
   */
  pingBitsError: function UT_pingBitsError(aIsComplete, aError) {
    if (AppConstants.platform != "win") {
      console.error(
        "Warning: Attempted to submit BITS telemetry on a " +
          "non-Windows platform"
      );
      return;
    }
    if (!(aError instanceof BitsError)) {
      console.error("Error sending BITS Error ping: Error is not a BitsError");
      aError = new BitsUnknownError();
    }
    // Coerce the error to integer
    let type = +aError.type;
    if (isNaN(type)) {
      console.error(
        "Error sending BITS Error ping: Either error is not a " +
          "BitsError, or error type is not an integer."
      );
      type = Ci.nsIBits.ERROR_TYPE_UNKNOWN;
    } else if (type == Ci.nsIBits.ERROR_TYPE_SUCCESS) {
      console.error(
        "Error sending BITS Error ping: The error type must not " +
          "be the success type."
      );
      type = Ci.nsIBits.ERROR_TYPE_UNKNOWN;
    }
    this._pingBitsResult(aIsComplete, type);

    if (aError.codeType == Ci.nsIBits.ERROR_CODE_TYPE_HRESULT) {
      let scalarKey;
      if (aIsComplete) {
        scalarKey = this.PATCH_COMPLETE;
      } else {
        scalarKey = this.PATCH_PARTIAL;
      }
      try {
        Services.telemetry.keyedScalarSet(
          "update.bitshresult",
          scalarKey,
          aError.code
        );
      } catch (e) {
        console.error(e);
      }
    }
  },

  /**
   * Records a successful BITS update download using Telemetry.
   *
   * @param aIsComplete
   *        If true the histogram is for a patch type complete, if false the
   *        histogram is for a patch type partial. This will determine the
   *        histogram id out of the following histogram ids:
   *        UPDATE_BITS_RESULT_COMPLETE
   *        UPDATE_BITS_RESULT_PARTIAL
   */
  pingBitsSuccess: function UT_pingBitsSuccess(aIsComplete) {
    if (AppConstants.platform != "win") {
      console.error(
        "Warning: Attempted to submit BITS telemetry on a " +
          "non-Windows platform"
      );
      return;
    }
    this._pingBitsResult(aIsComplete, Ci.nsIBits.ERROR_TYPE_SUCCESS);
  },

  /**
   * This is the helper function that does all the work for pingBitsError and
   * pingBitsSuccess. It submits a telemetry ping indicating the result of the
   * BITS update download.
   *
   * @param aIsComplete
   *        If true the histogram is for a patch type complete, if false the
   *        histogram is for a patch type partial. This will determine the
   *        histogram id out of the following histogram ids:
   *        UPDATE_BITS_RESULT_COMPLETE
   *        UPDATE_BITS_RESULT_PARTIAL
   * @param aResultType
   *        The result code. This will be one of the ERROR_TYPE_* values defined
   *        in the nsIBits interface.
   */
  _pingBitsResult: function UT_pingBitsResult(aIsComplete, aResultType) {
    let patchType;
    if (aIsComplete) {
      patchType = this.PATCH_COMPLETE;
    } else {
      patchType = this.PATCH_PARTIAL;
    }
    try {
      let id = "UPDATE_BITS_RESULT_" + patchType;
      Services.telemetry.getHistogramById(id).add(aResultType);
    } catch (e) {
      console.error(e);
    }
  },

  /**
   * Submit the interval in days since the last notification for this background
   * update check or a boolean if the last notification is in the future.
   *
   * @param  aSuffix
   *         The histogram id suffix for histogram IDs:
   *         UPDATE_INVALID_LASTUPDATETIME_EXTERNAL
   *         UPDATE_INVALID_LASTUPDATETIME_NOTIFY
   *         UPDATE_INVALID_LASTUPDATETIME_SUBSEQUENT
   *         UPDATE_LAST_NOTIFY_INTERVAL_DAYS_EXTERNAL
   *         UPDATE_LAST_NOTIFY_INTERVAL_DAYS_NOTIFY
   *         UPDATE_LAST_NOTIFY_INTERVAL_DAYS_SUBSEQUENT
   */
  pingLastUpdateTime: function UT_pingLastUpdateTime(aSuffix) {
    const PREF_APP_UPDATE_LASTUPDATETIME =
      "app.update.lastUpdateTime.background-update-timer";
    if (Services.prefs.prefHasUserValue(PREF_APP_UPDATE_LASTUPDATETIME)) {
      let lastUpdateTimeSeconds = Services.prefs.getIntPref(
        PREF_APP_UPDATE_LASTUPDATETIME
      );
      if (lastUpdateTimeSeconds) {
        let currentTimeSeconds = Math.round(Date.now() / 1000);
        if (lastUpdateTimeSeconds > currentTimeSeconds) {
          try {
            let id = "UPDATE_INVALID_LASTUPDATETIME_" + aSuffix;
            // count type histogram
            Services.telemetry.getHistogramById(id).add();
          } catch (e) {
            console.error(e);
          }
        } else {
          let intervalDays =
            (currentTimeSeconds - lastUpdateTimeSeconds) / (60 * 60 * 24);
          try {
            let id = "UPDATE_LAST_NOTIFY_INTERVAL_DAYS_" + aSuffix;
            // exponential type histogram
            Services.telemetry.getHistogramById(id).add(intervalDays);
          } catch (e) {
            console.error(e);
          }
        }
      }
    }
  },

  /**
   * Submit a telemetry ping for a boolean type histogram that indicates if the
   * service is installed and a telemetry ping for a boolean type histogram that
   * indicates if the service was at some point installed and is now
   * uninstalled.
   *
   * @param  aSuffix
   *         The histogram id suffix for histogram IDs:
   *         UPDATE_SERVICE_INSTALLED_EXTERNAL
   *         UPDATE_SERVICE_INSTALLED_NOTIFY
   *         UPDATE_SERVICE_INSTALLED_SUBSEQUENT
   *         UPDATE_SERVICE_MANUALLY_UNINSTALLED_EXTERNAL
   *         UPDATE_SERVICE_MANUALLY_UNINSTALLED_NOTIFY
   *         UPDATE_SERVICE_MANUALLY_UNINSTALLED_SUBSEQUENT
   * @param  aInstalled
   *         Whether the service is installed.
   */
  pingServiceInstallStatus: function UT_PSIS(aSuffix, aInstalled) {
    // Report the error but don't throw since it is more important to
    // successfully update than to throw.
    if (!("@mozilla.org/windows-registry-key;1" in Cc)) {
      console.error(Cr.NS_ERROR_NOT_AVAILABLE);
      return;
    }

    try {
      let id = "UPDATE_SERVICE_INSTALLED_" + aSuffix;
      // boolean type histogram
      Services.telemetry.getHistogramById(id).add(aInstalled);
    } catch (e) {
      console.error(e);
    }

    let attempted = 0;
    try {
      let wrk = Cc["@mozilla.org/windows-registry-key;1"].createInstance(
        Ci.nsIWindowsRegKey
      );
      wrk.open(
        wrk.ROOT_KEY_LOCAL_MACHINE,
        "SOFTWARE\\Mozilla\\MaintenanceService",
        wrk.ACCESS_READ | wrk.WOW64_64
      );
      // Was the service at some point installed, but is now uninstalled?
      attempted = wrk.readIntValue("Attempted");
      wrk.close();
    } catch (e) {
      // Since this will throw if the registry key doesn't exist (e.g. the
      // service has never been installed) don't report an error.
    }

    try {
      let id = "UPDATE_SERVICE_MANUALLY_UNINSTALLED_" + aSuffix;
      if (!aInstalled && attempted) {
        // count type histogram
        Services.telemetry.getHistogramById(id).add();
      }
    } catch (e) {
      console.error(e);
    }
  },

  /**
   * Submit a telemetry ping for a count type histogram when the expected value
   * does not equal the boolean value of a pref or if the pref isn't present
   * when the expected value does not equal default value. This lessens the
   * amount of data submitted to telemetry.
   *
   * @param  aID
   *         The histogram ID to report to.
   * @param  aPref
   *         The preference to check.
   * @param  aDefault
   *         The default value when the preference isn't present.
   * @param  aExpected (optional)
   *         If specified and the value is the same as the value that will be
   *         added the value won't be added to telemetry.
   */
  pingBoolPref: function UT_pingBoolPref(aID, aPref, aDefault, aExpected) {
    try {
      let val = aDefault;
      if (Services.prefs.getPrefType(aPref) != Ci.nsIPrefBranch.PREF_INVALID) {
        val = Services.prefs.getBoolPref(aPref);
      }
      if (val != aExpected) {
        // count type histogram
        Services.telemetry.getHistogramById(aID).add();
      }
    } catch (e) {
      console.error(e);
    }
  },

  /**
   * Submit a telemetry ping for a histogram with the integer value of a
   * preference when it is not the expected value or the default value when it
   * is not the expected value. This lessens the amount of data submitted to
   * telemetry.
   *
   * @param  aID
   *         The histogram ID to report to.
   * @param  aPref
   *         The preference to check.
   * @param  aDefault
   *         The default value when the pref is not set.
   * @param  aExpected (optional)
   *         If specified and the value is the same as the value that will be
   *         added the value won't be added to telemetry.
   */
  pingIntPref: function UT_pingIntPref(aID, aPref, aDefault, aExpected) {
    try {
      let val = aDefault;
      if (Services.prefs.getPrefType(aPref) != Ci.nsIPrefBranch.PREF_INVALID) {
        val = Services.prefs.getIntPref(aPref);
      }
      if (aExpected === undefined || val != aExpected) {
        // enumerated or exponential type histogram
        Services.telemetry.getHistogramById(aID).add(val);
      }
    } catch (e) {
      console.error(e);
    }
  },

  /**
   * Submit a telemetry ping for all histogram types that take a single
   * parameter to the telemetry add function and the count type histogram when
   * the aExpected parameter is specified. If the aExpected parameter is
   * specified and it equals the value specified by the aValue
   * parameter the telemetry submission will be skipped.
   *
   * @param  aID
   *         The histogram ID to report to.
   * @param  aValue
   *         The value to add when aExpected is not defined or the value to
   *         check if it is equal to when aExpected is defined.
   * @param  aExpected (optional)
   *         If specified and the value is the same as the value specified by
   *         aValue parameter the submission will be skipped.
   */
  pingGeneric: function UT_pingGeneric(aID, aValue, aExpected) {
    try {
      if (aExpected === undefined) {
        Services.telemetry.getHistogramById(aID).add(aValue);
      } else if (aValue != aExpected) {
        // count type histogram
        Services.telemetry.getHistogramById(aID).add();
      }
    } catch (e) {
      console.error(e);
    }
  },

  /**
   * Valid keys for the update.moveresult scalar.
   */
  MOVE_RESULT_SUCCESS: "SUCCESS",
  MOVE_RESULT_UNKNOWN_FAILURE: "UNKNOWN_FAILURE",

  /**
   * Reports the passed result of attempting to move the downloading update
   * into the ready update directory.
   */
  pingMoveResult: function UT_pingMoveResult(aResult) {
    Services.telemetry.keyedScalarAdd("update.move_result", aResult, 1);
  },

  pingSuppressPrompts: function UT_pingSuppressPrompts() {
    try {
      let val = Services.prefs.getBoolPref("app.update.suppressPrompts", false);
      if (val === true) {
        Services.telemetry.scalarSet("update.suppress_prompts", true);
      }
    } catch (e) {
      console.error(e);
    }
  },

  pingPinPolicy: function UT_pingPinPolicy(updatePin) {
    try {
      Services.telemetry.scalarSet("update.version_pin", updatePin);
    } catch (e) {
      console.error(e);
    }
  },
};

Object.freeze(AUSTLMY);