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Issue 190063004: chromeos: Delete old, unused contacts code. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: merge again Created 6 years, 9 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "chrome/browser/chromeos/contacts/gdata_contacts_service.h"
6
7 #include <cstring>
8 #include <map>
9 #include <string>
10 #include <utility>
11
12 #include "base/json/json_value_converter.h"
13 #include "base/json/json_writer.h"
14 #include "base/logging.h"
15 #include "base/memory/weak_ptr.h"
16 #include "base/metrics/histogram.h"
17 #include "base/stl_util.h"
18 #include "base/strings/string_util.h"
19 #include "base/threading/sequenced_worker_pool.h"
20 #include "base/time/time.h"
21 #include "base/timer/timer.h"
22 #include "base/values.h"
23 #include "chrome/browser/chromeos/contacts/contact.pb.h"
24 #include "content/public/browser/browser_thread.h"
25 #include "google_apis/drive/gdata_contacts_requests.h"
26 #include "google_apis/drive/gdata_errorcode.h"
27 #include "google_apis/drive/request_sender.h"
28 #include "google_apis/drive/time_util.h"
29
30 using content::BrowserThread;
31
32 namespace contacts {
33
34 namespace {
35
36 // Download outcomes reported via the "Contacts.FullUpdateResult" and
37 // "Contacts.IncrementalUpdateResult" histograms.
38 enum HistogramResult {
39 HISTOGRAM_RESULT_SUCCESS = 0,
40 HISTOGRAM_RESULT_GROUPS_DOWNLOAD_FAILURE = 1,
41 HISTOGRAM_RESULT_GROUPS_PARSE_FAILURE = 2,
42 HISTOGRAM_RESULT_MY_CONTACTS_GROUP_NOT_FOUND = 3,
43 HISTOGRAM_RESULT_CONTACTS_DOWNLOAD_FAILURE = 4,
44 HISTOGRAM_RESULT_CONTACTS_PARSE_FAILURE = 5,
45 HISTOGRAM_RESULT_PHOTO_DOWNLOAD_FAILURE = 6,
46 HISTOGRAM_RESULT_MAX_VALUE = 7,
47 };
48
49 // Maximum number of profile photos that we'll download per second.
50 // At values above 10, Google starts returning 503 errors.
51 const int kMaxPhotoDownloadsPerSecond = 10;
52
53 // Give up after seeing more than this many transient errors while trying to
54 // download a photo for a single contact.
55 const int kMaxTransientPhotoDownloadErrorsPerContact = 2;
56
57 // Hardcoded system group ID for the "My Contacts" group, per
58 // https://developers.google.com/google-apps/contacts/v3/#contact_group_entry.
59 const char kMyContactsSystemGroupId[] = "Contacts";
60
61 // Top-level field in a contact groups feed containing the list of entries.
62 const char kGroupEntryField[] = "feed.entry";
63
64 // Field in group entries containing the system group ID (e.g. ID "Contacts"
65 // for the "My Contacts" system group). See
66 // https://developers.google.com/google-apps/contacts/v3/#contact_group_entry
67 // for more details.
68 const char kSystemGroupIdField[] = "gContact$systemGroup.id";
69
70 // Field in the top-level object containing the contacts feed.
71 const char kFeedField[] = "feed";
72
73 // Field in the contacts feed containing a list of category information, along
74 // with fields within the dictionaries contained in the list and expected
75 // values.
76 const char kCategoryField[] = "category";
77 const char kCategorySchemeField[] = "scheme";
78 const char kCategorySchemeValue[] = "http://schemas.google.com/g/2005#kind";
79 const char kCategoryTermField[] = "term";
80 const char kCategoryTermValue[] =
81 "http://schemas.google.com/contact/2008#contact";
82
83 // Field in the contacts feed containing a list of contact entries.
84 const char kEntryField[] = "entry";
85
86 // Field in group and contact entries containing the item's ID.
87 const char kIdField[] = "id.$t";
88
89 // Top-level fields in contact entries.
90 const char kDeletedField[] = "gd$deleted";
91 const char kFullNameField[] = "gd$name.gd$fullName.$t";
92 const char kGivenNameField[] = "gd$name.gd$givenName.$t";
93 const char kAdditionalNameField[] = "gd$name.gd$additionalName.$t";
94 const char kFamilyNameField[] = "gd$name.gd$familyName.$t";
95 const char kNamePrefixField[] = "gd$name.gd$namePrefix.$t";
96 const char kNameSuffixField[] = "gd$name.gd$nameSuffix.$t";
97 const char kEmailField[] = "gd$email";
98 const char kPhoneField[] = "gd$phoneNumber";
99 const char kPostalAddressField[] = "gd$structuredPostalAddress";
100 const char kInstantMessagingField[] = "gd$im";
101 const char kLinkField[] = "link";
102 const char kUpdatedField[] = "updated.$t";
103
104 // Fields in entries in the |kEmailField| list.
105 const char kEmailAddressField[] = "address";
106
107 // Fields in entries in the |kPhoneField| list.
108 const char kPhoneNumberField[] = "$t";
109
110 // Fields in entries in the |kPostalAddressField| list.
111 const char kPostalAddressFormattedField[] = "gd$formattedAddress.$t";
112
113 // Fields in entries in the |kInstantMessagingField| list.
114 const char kInstantMessagingAddressField[] = "address";
115 const char kInstantMessagingProtocolField[] = "protocol";
116 const char kInstantMessagingProtocolAimValue[] =
117 "http://schemas.google.com/g/2005#AIM";
118 const char kInstantMessagingProtocolMsnValue[] =
119 "http://schemas.google.com/g/2005#MSN";
120 const char kInstantMessagingProtocolYahooValue[] =
121 "http://schemas.google.com/g/2005#YAHOO";
122 const char kInstantMessagingProtocolSkypeValue[] =
123 "http://schemas.google.com/g/2005#SKYPE";
124 const char kInstantMessagingProtocolQqValue[] =
125 "http://schemas.google.com/g/2005#QQ";
126 const char kInstantMessagingProtocolGoogleTalkValue[] =
127 "http://schemas.google.com/g/2005#GOOGLE_TALK";
128 const char kInstantMessagingProtocolIcqValue[] =
129 "http://schemas.google.com/g/2005#ICQ";
130 const char kInstantMessagingProtocolJabberValue[] =
131 "http://schemas.google.com/g/2005#JABBER";
132
133 // Generic fields shared between address-like items (email, postal, etc.).
134 const char kAddressPrimaryField[] = "primary";
135 const char kAddressPrimaryTrueValue[] = "true";
136 const char kAddressRelField[] = "rel";
137 const char kAddressRelHomeValue[] = "http://schemas.google.com/g/2005#home";
138 const char kAddressRelWorkValue[] = "http://schemas.google.com/g/2005#work";
139 const char kAddressRelMobileValue[] = "http://schemas.google.com/g/2005#mobile";
140 const char kAddressLabelField[] = "label";
141
142 // Fields in entries in the |kLinkField| list.
143 const char kLinkHrefField[] = "href";
144 const char kLinkRelField[] = "rel";
145 const char kLinkETagField[] = "gd$etag";
146 const char kLinkRelPhotoValue[] =
147 "http://schemas.google.com/contacts/2008/rel#photo";
148
149 // Returns a string containing a pretty-printed JSON representation of |value|.
150 std::string PrettyPrintValue(const base::Value& value) {
151 std::string out;
152 base::JSONWriter::WriteWithOptions(
153 &value, base::JSONWriter::OPTIONS_PRETTY_PRINT, &out);
154 return out;
155 }
156
157 // Assigns the value at |path| within |dict| to |out|, returning false if the
158 // path wasn't present. Unicode byte order marks are removed from the string.
159 bool GetCleanedString(const base::DictionaryValue& dict,
160 const std::string& path,
161 std::string* out) {
162 if (!dict.GetString(path, out))
163 return false;
164
165 // The Unicode byte order mark, U+FEFF, is useless in UTF-8 strings (which are
166 // interpreted one byte at a time).
167 ReplaceSubstringsAfterOffset(out, 0, "\xEF\xBB\xBF", "");
168 return true;
169 }
170
171 // Returns whether an address is primary, given a dictionary representing a
172 // single address.
173 bool IsAddressPrimary(const base::DictionaryValue& address_dict) {
174 std::string primary;
175 address_dict.GetString(kAddressPrimaryField, &primary);
176 return primary == kAddressPrimaryTrueValue;
177 }
178
179 // Initializes an AddressType message given a dictionary representing a single
180 // address.
181 void InitAddressType(const base::DictionaryValue& address_dict,
182 Contact_AddressType* type) {
183 DCHECK(type);
184 type->Clear();
185
186 std::string rel;
187 address_dict.GetString(kAddressRelField, &rel);
188 if (rel == kAddressRelHomeValue)
189 type->set_relation(Contact_AddressType_Relation_HOME);
190 else if (rel == kAddressRelWorkValue)
191 type->set_relation(Contact_AddressType_Relation_WORK);
192 else if (rel == kAddressRelMobileValue)
193 type->set_relation(Contact_AddressType_Relation_MOBILE);
194 else
195 type->set_relation(Contact_AddressType_Relation_OTHER);
196
197 GetCleanedString(address_dict, kAddressLabelField, type->mutable_label());
198 }
199
200 // Maps the protocol from a dictionary representing a contact's IM address to a
201 // contacts::Contact_InstantMessagingAddress_Protocol value.
202 contacts::Contact_InstantMessagingAddress_Protocol
203 GetInstantMessagingProtocol(const base::DictionaryValue& im_dict) {
204 std::string protocol;
205 im_dict.GetString(kInstantMessagingProtocolField, &protocol);
206 if (protocol == kInstantMessagingProtocolAimValue)
207 return contacts::Contact_InstantMessagingAddress_Protocol_AIM;
208 else if (protocol == kInstantMessagingProtocolMsnValue)
209 return contacts::Contact_InstantMessagingAddress_Protocol_MSN;
210 else if (protocol == kInstantMessagingProtocolYahooValue)
211 return contacts::Contact_InstantMessagingAddress_Protocol_YAHOO;
212 else if (protocol == kInstantMessagingProtocolSkypeValue)
213 return contacts::Contact_InstantMessagingAddress_Protocol_SKYPE;
214 else if (protocol == kInstantMessagingProtocolQqValue)
215 return contacts::Contact_InstantMessagingAddress_Protocol_QQ;
216 else if (protocol == kInstantMessagingProtocolGoogleTalkValue)
217 return contacts::Contact_InstantMessagingAddress_Protocol_GOOGLE_TALK;
218 else if (protocol == kInstantMessagingProtocolIcqValue)
219 return contacts::Contact_InstantMessagingAddress_Protocol_ICQ;
220 else if (protocol == kInstantMessagingProtocolJabberValue)
221 return contacts::Contact_InstantMessagingAddress_Protocol_JABBER;
222 else
223 return contacts::Contact_InstantMessagingAddress_Protocol_OTHER;
224 }
225
226 // Gets the photo URL from a contact's dictionary (within the "entry" list).
227 // Returns an empty string if no photo was found.
228 std::string GetPhotoUrl(const base::DictionaryValue& dict) {
229 const base::ListValue* link_list = NULL;
230 if (!dict.GetList(kLinkField, &link_list))
231 return std::string();
232
233 for (size_t i = 0; i < link_list->GetSize(); ++i) {
234 const base::DictionaryValue* link_dict = NULL;
235 if (!link_list->GetDictionary(i, &link_dict))
236 continue;
237
238 std::string rel;
239 if (!link_dict->GetString(kLinkRelField, &rel))
240 continue;
241 if (rel != kLinkRelPhotoValue)
242 continue;
243
244 // From https://goo.gl/7T6Od: "If a contact does not have a photo, then the
245 // photo link element has no gd:etag attribute."
246 std::string etag;
247 if (!link_dict->GetString(kLinkETagField, &etag))
248 continue;
249
250 std::string url;
251 if (link_dict->GetString(kLinkHrefField, &url))
252 return url;
253 }
254 return std::string();
255 }
256
257 // Fills a Contact's fields using an entry from a GData feed.
258 bool FillContactFromDictionary(const base::DictionaryValue& dict,
259 contacts::Contact* contact) {
260 DCHECK(contact);
261 contact->Clear();
262
263 if (!dict.GetString(kIdField, contact->mutable_contact_id()))
264 return false;
265
266 std::string updated;
267 if (dict.GetString(kUpdatedField, &updated)) {
268 base::Time update_time;
269 if (!google_apis::util::GetTimeFromString(updated, &update_time)) {
270 LOG(WARNING) << "Unable to parse time \"" << updated << "\"";
271 return false;
272 }
273 contact->set_update_time(update_time.ToInternalValue());
274 }
275
276 const base::Value* deleted_value = NULL;
277 contact->set_deleted(dict.Get(kDeletedField, &deleted_value));
278 if (contact->deleted())
279 return true;
280
281 GetCleanedString(dict, kFullNameField, contact->mutable_full_name());
282 GetCleanedString(dict, kGivenNameField, contact->mutable_given_name());
283 GetCleanedString(
284 dict, kAdditionalNameField, contact->mutable_additional_name());
285 GetCleanedString(dict, kFamilyNameField, contact->mutable_family_name());
286 GetCleanedString(dict, kNamePrefixField, contact->mutable_name_prefix());
287 GetCleanedString(dict, kNameSuffixField, contact->mutable_name_suffix());
288
289 const base::ListValue* email_list = NULL;
290 if (dict.GetList(kEmailField, &email_list)) {
291 for (size_t i = 0; i < email_list->GetSize(); ++i) {
292 const base::DictionaryValue* email_dict = NULL;
293 if (!email_list->GetDictionary(i, &email_dict))
294 return false;
295
296 contacts::Contact_EmailAddress* email = contact->add_email_addresses();
297 if (!GetCleanedString(*email_dict,
298 kEmailAddressField,
299 email->mutable_address())) {
300 return false;
301 }
302 email->set_primary(IsAddressPrimary(*email_dict));
303 InitAddressType(*email_dict, email->mutable_type());
304 }
305 }
306
307 const base::ListValue* phone_list = NULL;
308 if (dict.GetList(kPhoneField, &phone_list)) {
309 for (size_t i = 0; i < phone_list->GetSize(); ++i) {
310 const base::DictionaryValue* phone_dict = NULL;
311 if (!phone_list->GetDictionary(i, &phone_dict))
312 return false;
313
314 contacts::Contact_PhoneNumber* phone = contact->add_phone_numbers();
315 if (!GetCleanedString(*phone_dict,
316 kPhoneNumberField,
317 phone->mutable_number())) {
318 return false;
319 }
320 phone->set_primary(IsAddressPrimary(*phone_dict));
321 InitAddressType(*phone_dict, phone->mutable_type());
322 }
323 }
324
325 const base::ListValue* address_list = NULL;
326 if (dict.GetList(kPostalAddressField, &address_list)) {
327 for (size_t i = 0; i < address_list->GetSize(); ++i) {
328 const base::DictionaryValue* address_dict = NULL;
329 if (!address_list->GetDictionary(i, &address_dict))
330 return false;
331
332 contacts::Contact_PostalAddress* address =
333 contact->add_postal_addresses();
334 if (!GetCleanedString(*address_dict,
335 kPostalAddressFormattedField,
336 address->mutable_address())) {
337 return false;
338 }
339 address->set_primary(IsAddressPrimary(*address_dict));
340 InitAddressType(*address_dict, address->mutable_type());
341 }
342 }
343
344 const base::ListValue* im_list = NULL;
345 if (dict.GetList(kInstantMessagingField, &im_list)) {
346 for (size_t i = 0; i < im_list->GetSize(); ++i) {
347 const base::DictionaryValue* im_dict = NULL;
348 if (!im_list->GetDictionary(i, &im_dict))
349 return false;
350
351 contacts::Contact_InstantMessagingAddress* im =
352 contact->add_instant_messaging_addresses();
353 if (!GetCleanedString(*im_dict,
354 kInstantMessagingAddressField,
355 im->mutable_address())) {
356 return false;
357 }
358 im->set_primary(IsAddressPrimary(*im_dict));
359 InitAddressType(*im_dict, im->mutable_type());
360 im->set_protocol(GetInstantMessagingProtocol(*im_dict));
361 }
362 }
363
364 return true;
365 }
366
367 // Structure into which we parse the contact groups feed using
368 // JSONValueConverter.
369 struct ContactGroups {
370 struct ContactGroup {
371 // Group ID, e.g.
372 // "http://www.google.com/m8/feeds/groups/user%40gmail.com/base/6".
373 std::string group_id;
374
375 // System group ID (e.g. "Contacts" for the "My Contacts" system group) if
376 // this is a system group, and empty otherwise. See http://goo.gl/oWVnN
377 // for more details.
378 std::string system_group_id;
379 };
380
381 // Given a system group ID, returns the corresponding group ID or an empty
382 // string if the requested system group wasn't present.
383 std::string GetGroupIdForSystemGroup(const std::string& system_group_id) {
384 for (size_t i = 0; i < groups.size(); ++i) {
385 const ContactGroup& group = *groups[i];
386 if (group.system_group_id == system_group_id)
387 return group.group_id;
388 }
389 return std::string();
390 }
391
392 // Given |value| corresponding to a dictionary in a contact group feed's
393 // "entry" list, fills |result| with information about the group.
394 static bool GetContactGroup(const base::Value* value, ContactGroup* result) {
395 DCHECK(value);
396 DCHECK(result);
397 const base::DictionaryValue* dict = NULL;
398 if (!value->GetAsDictionary(&dict))
399 return false;
400
401 dict->GetString(kIdField, &result->group_id);
402 dict->GetString(kSystemGroupIdField, &result->system_group_id);
403 return true;
404 }
405
406 static void RegisterJSONConverter(
407 base::JSONValueConverter<ContactGroups>* converter) {
408 DCHECK(converter);
409 converter->RegisterRepeatedCustomValue<ContactGroup>(
410 kGroupEntryField, &ContactGroups::groups, &GetContactGroup);
411 }
412
413 ScopedVector<ContactGroup> groups;
414 };
415
416 } // namespace
417
418 // This class handles a single request to download all of a user's contacts.
419 //
420 // First, the feed containing the user's contact groups is downloaded via
421 // GetContactGroupsRequest and examined to find the ID for the "My Contacts"
422 // group (by default, the contacts API also returns suggested contacts). The
423 // group ID is cached in GDataContactsService so that this step can be skipped
424 // by later DownloadContactRequests.
425 //
426 // Next, the contacts feed is downloaded via GetContactsRequest and parsed.
427 // Individual contacts::Contact objects are created using the data from the
428 // feed.
429 //
430 // Finally, GetContactPhotoRequests are created and used to start downloading
431 // contacts' photos in parallel. When all photos have been downloaded, the
432 // contacts are passed to the passed-in callback.
433 class GDataContactsService::DownloadContactsRequest {
434 public:
435 DownloadContactsRequest(
436 GDataContactsService* service,
437 google_apis::RequestSender* sender,
438 SuccessCallback success_callback,
439 FailureCallback failure_callback,
440 const base::Time& min_update_time)
441 : service_(service),
442 sender_(sender),
443 success_callback_(success_callback),
444 failure_callback_(failure_callback),
445 min_update_time_(min_update_time),
446 contacts_(new ScopedVector<contacts::Contact>),
447 my_contacts_group_id_(service->cached_my_contacts_group_id_),
448 num_in_progress_photo_downloads_(0),
449 photo_download_failed_(false),
450 num_photo_download_404_errors_(0),
451 total_photo_bytes_(0),
452 weak_ptr_factory_(this) {
453 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
454 DCHECK(service_);
455 DCHECK(sender_);
456 }
457
458 ~DownloadContactsRequest() {
459 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
460 service_ = NULL;
461 sender_ = NULL;
462 }
463
464 const std::string my_contacts_group_id() const {
465 return my_contacts_group_id_;
466 }
467
468 // Begins the contacts-downloading process. If the ID for the "My Contacts"
469 // group has previously been cached, then the contacts download is started.
470 // Otherwise, the contact groups download is started.
471 void Run() {
472 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
473 download_start_time_ = base::TimeTicks::Now();
474 if (!my_contacts_group_id_.empty()) {
475 StartContactsDownload();
476 } else {
477 google_apis::GetContactGroupsRequest* operation =
478 new google_apis::GetContactGroupsRequest(
479 sender_,
480 base::Bind(&DownloadContactsRequest::HandleGroupsFeedData,
481 weak_ptr_factory_.GetWeakPtr()));
482 if (!service_->groups_feed_url_for_testing_.is_empty()) {
483 operation->set_feed_url_for_testing(
484 service_->groups_feed_url_for_testing_);
485 }
486 sender_->StartRequestWithRetry(operation);
487 }
488 }
489
490 private:
491 // Invokes the failure callback and notifies GDataContactsService that the
492 // request is done.
493 void ReportFailure(HistogramResult histogram_result) {
494 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
495 SendHistograms(histogram_result);
496 failure_callback_.Run();
497 service_->OnRequestComplete(this);
498 }
499
500 // Reports UMA stats after the request has completed.
501 void SendHistograms(HistogramResult result) {
502 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
503 DCHECK_GE(result, 0);
504 DCHECK_LT(result, HISTOGRAM_RESULT_MAX_VALUE);
505
506 bool success = (result == HISTOGRAM_RESULT_SUCCESS);
507 base::TimeDelta elapsed_time =
508 base::TimeTicks::Now() - download_start_time_;
509 int photo_error_percent = static_cast<int>(
510 100.0 * transient_photo_download_errors_per_contact_.size() /
511 contact_photo_urls_.size() + 0.5);
512
513 if (min_update_time_.is_null()) {
514 UMA_HISTOGRAM_ENUMERATION("Contacts.FullUpdateResult",
515 result, HISTOGRAM_RESULT_MAX_VALUE);
516 if (success) {
517 UMA_HISTOGRAM_MEDIUM_TIMES("Contacts.FullUpdateDuration",
518 elapsed_time);
519 UMA_HISTOGRAM_COUNTS_10000("Contacts.FullUpdateContacts",
520 contacts_->size());
521 UMA_HISTOGRAM_COUNTS_10000("Contacts.FullUpdatePhotos",
522 contact_photo_urls_.size());
523 UMA_HISTOGRAM_MEMORY_KB("Contacts.FullUpdatePhotoBytes",
524 total_photo_bytes_);
525 UMA_HISTOGRAM_COUNTS_10000("Contacts.FullUpdatePhoto404Errors",
526 num_photo_download_404_errors_);
527 UMA_HISTOGRAM_PERCENTAGE("Contacts.FullUpdatePhotoErrorPercent",
528 photo_error_percent);
529 }
530 } else {
531 UMA_HISTOGRAM_ENUMERATION("Contacts.IncrementalUpdateResult",
532 result, HISTOGRAM_RESULT_MAX_VALUE);
533 if (success) {
534 UMA_HISTOGRAM_MEDIUM_TIMES("Contacts.IncrementalUpdateDuration",
535 elapsed_time);
536 UMA_HISTOGRAM_COUNTS_10000("Contacts.IncrementalUpdateContacts",
537 contacts_->size());
538 UMA_HISTOGRAM_COUNTS_10000("Contacts.IncrementalUpdatePhotos",
539 contact_photo_urls_.size());
540 UMA_HISTOGRAM_MEMORY_KB("Contacts.IncrementalUpdatePhotoBytes",
541 total_photo_bytes_);
542 UMA_HISTOGRAM_COUNTS_10000("Contacts.IncrementalUpdatePhoto404Errors",
543 num_photo_download_404_errors_);
544 UMA_HISTOGRAM_PERCENTAGE("Contacts.IncrementalUpdatePhotoErrorPercent",
545 photo_error_percent);
546 }
547 }
548 }
549
550 // Callback for GetContactGroupsRequest calls. Starts downloading the
551 // actual contacts after finding the "My Contacts" group ID.
552 void HandleGroupsFeedData(google_apis::GDataErrorCode error,
553 scoped_ptr<base::Value> feed_data) {
554 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
555 if (error != google_apis::HTTP_SUCCESS) {
556 LOG(WARNING) << "Got error " << error << " while downloading groups";
557 ReportFailure(HISTOGRAM_RESULT_GROUPS_DOWNLOAD_FAILURE);
558 return;
559 }
560
561 VLOG(2) << "Got groups feed data:\n"
562 << PrettyPrintValue(*(feed_data.get()));
563 ContactGroups groups;
564 base::JSONValueConverter<ContactGroups> converter;
565 if (!converter.Convert(*feed_data, &groups)) {
566 LOG(WARNING) << "Unable to parse groups feed";
567 ReportFailure(HISTOGRAM_RESULT_GROUPS_PARSE_FAILURE);
568 return;
569 }
570
571 my_contacts_group_id_ =
572 groups.GetGroupIdForSystemGroup(kMyContactsSystemGroupId);
573 if (!my_contacts_group_id_.empty()) {
574 StartContactsDownload();
575 } else {
576 LOG(WARNING) << "Unable to find ID for \"My Contacts\" group";
577 ReportFailure(HISTOGRAM_RESULT_MY_CONTACTS_GROUP_NOT_FOUND);
578 }
579 }
580
581 // Starts a download of the contacts from the "My Contacts" group.
582 void StartContactsDownload() {
583 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
584 google_apis::GetContactsRequest* operation =
585 new google_apis::GetContactsRequest(
586 sender_,
587 my_contacts_group_id_,
588 min_update_time_,
589 base::Bind(&DownloadContactsRequest::HandleContactsFeedData,
590 weak_ptr_factory_.GetWeakPtr()));
591 if (!service_->contacts_feed_url_for_testing_.is_empty()) {
592 operation->set_feed_url_for_testing(
593 service_->contacts_feed_url_for_testing_);
594 }
595 sender_->StartRequestWithRetry(operation);
596 }
597
598 // Callback for GetContactsRequest calls.
599 void HandleContactsFeedData(google_apis::GDataErrorCode error,
600 scoped_ptr<base::Value> feed_data) {
601 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
602 if (error != google_apis::HTTP_SUCCESS) {
603 LOG(WARNING) << "Got error " << error << " while downloading contacts";
604 ReportFailure(HISTOGRAM_RESULT_CONTACTS_DOWNLOAD_FAILURE);
605 return;
606 }
607
608 VLOG(2) << "Got contacts feed data:\n"
609 << PrettyPrintValue(*(feed_data.get()));
610 if (!ProcessContactsFeedData(*feed_data.get())) {
611 LOG(WARNING) << "Unable to process contacts feed data";
612 ReportFailure(HISTOGRAM_RESULT_CONTACTS_PARSE_FAILURE);
613 return;
614 }
615
616 StartPhotoDownloads();
617 photo_download_timer_.Start(
618 FROM_HERE, service_->photo_download_timer_interval_,
619 this, &DownloadContactsRequest::StartPhotoDownloads);
620 CheckCompletion();
621 }
622
623 // Processes the raw contacts feed from |feed_data| and fills |contacts_|.
624 // Returns true on success.
625 bool ProcessContactsFeedData(const base::Value& feed_data) {
626 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
627 const base::DictionaryValue* toplevel_dict = NULL;
628 if (!feed_data.GetAsDictionary(&toplevel_dict)) {
629 LOG(WARNING) << "Top-level object is not a dictionary";
630 return false;
631 }
632
633 const base::DictionaryValue* feed_dict = NULL;
634 if (!toplevel_dict->GetDictionary(kFeedField, &feed_dict)) {
635 LOG(WARNING) << "Feed dictionary missing";
636 return false;
637 }
638
639 // Check the category field to confirm that this is actually a contact feed.
640 const base::ListValue* category_list = NULL;
641 if (!feed_dict->GetList(kCategoryField, &category_list)) {
642 LOG(WARNING) << "Category list missing";
643 return false;
644 }
645 const base::DictionaryValue* category_dict = NULL;
646 if (category_list->GetSize() != 1 ||
647 !category_list->GetDictionary(0, &category_dict)) {
648 LOG(WARNING) << "Unable to get dictionary from category list of size "
649 << category_list->GetSize();
650 return false;
651 }
652 std::string category_scheme, category_term;
653 if (!category_dict->GetString(kCategorySchemeField, &category_scheme) ||
654 !category_dict->GetString(kCategoryTermField, &category_term) ||
655 category_scheme != kCategorySchemeValue ||
656 category_term != kCategoryTermValue) {
657 LOG(WARNING) << "Unexpected category (scheme was \"" << category_scheme
658 << "\", term was \"" << category_term << "\")";
659 return false;
660 }
661
662 // A missing entry list means no entries (maybe we're doing an incremental
663 // update and nothing has changed).
664 const base::ListValue* entry_list = NULL;
665 if (!feed_dict->GetList(kEntryField, &entry_list))
666 return true;
667
668 contacts_needing_photo_downloads_.reserve(entry_list->GetSize());
669
670 for (base::ListValue::const_iterator entry_it = entry_list->begin();
671 entry_it != entry_list->end(); ++entry_it) {
672 const size_t index = (entry_it - entry_list->begin());
673 const base::DictionaryValue* contact_dict = NULL;
674 if (!(*entry_it)->GetAsDictionary(&contact_dict)) {
675 LOG(WARNING) << "Entry " << index << " isn't a dictionary";
676 return false;
677 }
678
679 scoped_ptr<contacts::Contact> contact(new contacts::Contact);
680 if (!FillContactFromDictionary(*contact_dict, contact.get())) {
681 LOG(WARNING) << "Unable to fill entry " << index;
682 return false;
683 }
684
685 VLOG(1) << "Got contact " << index << ":"
686 << " id=" << contact->contact_id()
687 << " full_name=\"" << contact->full_name() << "\""
688 << " update_time=" << contact->update_time();
689
690 std::string photo_url = GetPhotoUrl(*contact_dict);
691 if (!photo_url.empty()) {
692 if (!service_->rewrite_photo_url_callback_for_testing_.is_null()) {
693 photo_url =
694 service_->rewrite_photo_url_callback_for_testing_.Run(photo_url);
695 }
696 contact_photo_urls_[contact.get()] = photo_url;
697 contacts_needing_photo_downloads_.push_back(contact.get());
698 }
699
700 contacts_->push_back(contact.release());
701 }
702
703 return true;
704 }
705
706 // If we're done downloading photos, invokes a callback and deletes |this|.
707 // Otherwise, starts one or more downloads of URLs from
708 // |contacts_needing_photo_downloads_|.
709 void CheckCompletion() {
710 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
711 if (contacts_needing_photo_downloads_.empty() &&
712 num_in_progress_photo_downloads_ == 0) {
713 VLOG(1) << "Done downloading photos; invoking callback";
714 photo_download_timer_.Stop();
715 if (photo_download_failed_) {
716 ReportFailure(HISTOGRAM_RESULT_PHOTO_DOWNLOAD_FAILURE );
717 } else {
718 SendHistograms(HISTOGRAM_RESULT_SUCCESS);
719 success_callback_.Run(contacts_.Pass());
720 service_->OnRequestComplete(this);
721 }
722 return;
723 }
724 }
725
726 // Starts photo downloads for contacts in |contacts_needing_photo_downloads_|.
727 // Should be invoked only once per second.
728 void StartPhotoDownloads() {
729 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
730 while (!contacts_needing_photo_downloads_.empty() &&
731 (num_in_progress_photo_downloads_ <
732 service_->max_photo_downloads_per_second_)) {
733 contacts::Contact* contact = contacts_needing_photo_downloads_.back();
734 contacts_needing_photo_downloads_.pop_back();
735 DCHECK(contact_photo_urls_.count(contact));
736 std::string url = contact_photo_urls_[contact];
737
738 VLOG(1) << "Starting download of photo " << url << " for "
739 << contact->contact_id();
740 sender_->StartRequestWithRetry(
741 new google_apis::GetContactPhotoRequest(
742 sender_,
743 GURL(url),
744 base::Bind(&DownloadContactsRequest::HandlePhotoData,
745 weak_ptr_factory_.GetWeakPtr(),
746 contact)));
747 num_in_progress_photo_downloads_++;
748 }
749 }
750
751 // Callback for GetContactPhotoRequest calls. Updates the associated
752 // Contact and checks for completion.
753 void HandlePhotoData(contacts::Contact* contact,
754 google_apis::GDataErrorCode error,
755 scoped_ptr<std::string> download_data) {
756 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
757 VLOG(1) << "Got photo data for " << contact->contact_id()
758 << " (error=" << error << " size=" << download_data->size() << ")";
759 num_in_progress_photo_downloads_--;
760
761 if (error == google_apis::HTTP_INTERNAL_SERVER_ERROR ||
762 error == google_apis::HTTP_SERVICE_UNAVAILABLE) {
763 int num_errors = ++transient_photo_download_errors_per_contact_[contact];
764 if (num_errors <= kMaxTransientPhotoDownloadErrorsPerContact) {
765 LOG(WARNING) << "Got error " << error << " while downloading photo "
766 << "for " << contact->contact_id() << "; retrying";
767 contacts_needing_photo_downloads_.push_back(contact);
768 return;
769 }
770 }
771
772 if (error == google_apis::HTTP_NOT_FOUND) {
773 LOG(WARNING) << "Got error " << error << " while downloading photo "
774 << "for " << contact->contact_id() << "; skipping";
775 num_photo_download_404_errors_++;
776 CheckCompletion();
777 return;
778 }
779
780 if (error != google_apis::HTTP_SUCCESS) {
781 LOG(WARNING) << "Got error " << error << " while downloading photo "
782 << "for " << contact->contact_id() << "; giving up";
783 photo_download_failed_ = true;
784 // Make sure we don't start any more downloads.
785 contacts_needing_photo_downloads_.clear();
786 CheckCompletion();
787 return;
788 }
789
790 total_photo_bytes_ += download_data->size();
791 contact->set_raw_untrusted_photo(*download_data);
792 CheckCompletion();
793 }
794
795 typedef std::map<contacts::Contact*, std::string> ContactPhotoUrls;
796
797 GDataContactsService* service_; // not owned
798 google_apis::RequestSender* sender_; // not owned
799
800 SuccessCallback success_callback_;
801 FailureCallback failure_callback_;
802
803 base::Time min_update_time_;
804
805 scoped_ptr<ScopedVector<contacts::Contact> > contacts_;
806
807 // ID of the "My Contacts" contacts group.
808 std::string my_contacts_group_id_;
809
810 // Map from a contact to the URL at which its photo is located.
811 // Contacts without photos do not appear in this map.
812 ContactPhotoUrls contact_photo_urls_;
813
814 // Invokes StartPhotoDownloads() once per second.
815 base::RepeatingTimer<DownloadContactsRequest> photo_download_timer_;
816
817 // Contacts that have photos that we still need to start downloading.
818 // When we start a download, the contact is removed from this list.
819 std::vector<contacts::Contact*> contacts_needing_photo_downloads_;
820
821 // Number of in-progress photo downloads.
822 int num_in_progress_photo_downloads_;
823
824 // Map from a contact to the number of transient errors that we've encountered
825 // while trying to download its photo. Contacts for which no errors have been
826 // encountered aren't represented in the map.
827 std::map<contacts::Contact*, int>
828 transient_photo_download_errors_per_contact_;
829
830 // Did we encounter a fatal error while downloading a photo?
831 bool photo_download_failed_;
832
833 // How many photos did we skip due to 404 errors?
834 int num_photo_download_404_errors_;
835
836 // Total size of all photos that were downloaded.
837 size_t total_photo_bytes_;
838
839 // Time at which Run() was called.
840 base::TimeTicks download_start_time_;
841
842 // Note: This should remain the last member so it'll be destroyed and
843 // invalidate its weak pointers before any other members are destroyed.
844 base::WeakPtrFactory<DownloadContactsRequest> weak_ptr_factory_;
845
846 DISALLOW_COPY_AND_ASSIGN(DownloadContactsRequest);
847 };
848
849 GDataContactsService::GDataContactsService(
850 net::URLRequestContextGetter* url_request_context_getter,
851 google_apis::AuthServiceInterface* auth_service)
852 : max_photo_downloads_per_second_(kMaxPhotoDownloadsPerSecond),
853 photo_download_timer_interval_(base::TimeDelta::FromSeconds(1)) {
854 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
855 sender_.reset(new google_apis::RequestSender(
856 auth_service,
857 url_request_context_getter,
858 BrowserThread::GetBlockingPool()->GetSequencedTaskRunner(
859 BrowserThread::GetBlockingPool()->GetSequenceToken()).get(),
860 "" /* custom_user_agent */));
861 }
862
863 GDataContactsService::~GDataContactsService() {
864 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
865 STLDeleteContainerPointers(requests_.begin(), requests_.end());
866 requests_.clear();
867 }
868
869 void GDataContactsService::DownloadContacts(SuccessCallback success_callback,
870 FailureCallback failure_callback,
871 const base::Time& min_update_time) {
872 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
873 DownloadContactsRequest* request =
874 new DownloadContactsRequest(this,
875 sender_.get(),
876 success_callback,
877 failure_callback,
878 min_update_time);
879 VLOG(1) << "Starting contacts download with request " << request;
880 requests_.insert(request);
881 request->Run();
882 }
883
884 void GDataContactsService::OnRequestComplete(DownloadContactsRequest* request) {
885 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
886 DCHECK(request);
887 VLOG(1) << "Download request " << request << " complete";
888 if (!request->my_contacts_group_id().empty())
889 cached_my_contacts_group_id_ = request->my_contacts_group_id();
890 requests_.erase(request);
891 delete request;
892 }
893
894 } // namespace contacts
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