commit 068a0d20dde5312d4b266c65b75f0b86a09a6489 Author: Alex Catarineu acat@torproject.org Date: Wed Oct 16 23:01:12 2019 +0200

Bug 31740: Remove some unnecessary RemoteSettings instances

More concretely, SearchService.jsm 'hijack-blocklists' and url-classifier-skip-urls.

Avoid creating instance for 'anti-tracking-url-decoration'.

If prefs are disabling their usage, avoid creating instances for 'cert-revocations' and 'intermediates'.

Do not ship JSON dumps for collections we do not expect to need. For the ones in the 'main' bucket, this prevents them from being synced unnecessarily (the code in remote-settings does so for collections in the main bucket for which a dump or local data exists). For the collections in the other buckets, we just save some size by not shipping their dumps.

We also clear the collections database on the v2 -> v3 migration. --- .../url-classifier/UrlClassifierFeatureBase.cpp | 2 +- netwerk/url-classifier/components.conf | 6 ------ security/manager/ssl/RemoteSecuritySettings.jsm | 22 ++++++++++++++++++++++ services/settings/IDBHelpers.jsm | 4 ++++ services/settings/dumps/blocklists/moz.build | 1 - services/settings/dumps/main/moz.build | 5 ----- services/settings/dumps/security-state/moz.build | 1 - .../components/antitracking/antitracking.manifest | 2 +- toolkit/components/antitracking/components.conf | 7 ------- toolkit/components/search/SearchService.jsm | 2 -- 10 files changed, 28 insertions(+), 24 deletions(-)

diff --git a/netwerk/url-classifier/UrlClassifierFeatureBase.cpp b/netwerk/url-classifier/UrlClassifierFeatureBase.cpp index 9bc7fc5d6e9a..3fb3b74a4f08 100644 --- a/netwerk/url-classifier/UrlClassifierFeatureBase.cpp +++ b/netwerk/url-classifier/UrlClassifierFeatureBase.cpp @@ -76,7 +76,7 @@ void UrlClassifierFeatureBase::InitializePreferences() {

nsCOMPtr<nsIUrlClassifierSkipListService> skipListService = do_GetService("@mozilla.org/url-classifier/skip-list-service;1"); - if (NS_WARN_IF(!skipListService)) { + if (!skipListService) { return; }

diff --git a/netwerk/url-classifier/components.conf b/netwerk/url-classifier/components.conf index 7f49d94b6488..b2e667247317 100644 --- a/netwerk/url-classifier/components.conf +++ b/netwerk/url-classifier/components.conf @@ -13,10 +13,4 @@ Classes = [ 'constructor': 'mozilla::net::ChannelClassifierService::GetSingleton', 'headers': ['mozilla/net/ChannelClassifierService.h'], }, - { - 'cid': '{b9f4fd03-9d87-4bfd-9958-85a821750ddc}', - 'contract_ids': ['@mozilla.org/url-classifier/skip-list-service;1'], - 'jsm': 'resource://gre/modules/UrlClassifierSkipListService.jsm', - 'constructor': 'UrlClassifierSkipListService', - }, ] diff --git a/security/manager/ssl/RemoteSecuritySettings.jsm b/security/manager/ssl/RemoteSecuritySettings.jsm index 199eeb5b58e1..96d6a7a2de48 100644 --- a/security/manager/ssl/RemoteSecuritySettings.jsm +++ b/security/manager/ssl/RemoteSecuritySettings.jsm @@ -350,6 +350,16 @@ var RemoteSecuritySettings = {

class IntermediatePreloads { constructor() { + this.maybeInit(); + } + + maybeInit() { + if ( + this.client || + !Services.prefs.getBoolPref(INTERMEDIATES_ENABLED_PREF, true) + ) { + return; + } this.client = RemoteSettings( Services.prefs.getCharPref(INTERMEDIATES_COLLECTION_PREF), { @@ -379,6 +389,7 @@ class IntermediatePreloads { ); return; } + this.maybeInit();

// Download attachments that are awaiting download, up to a max. const maxDownloadsPerRun = Services.prefs.getIntPref( @@ -704,6 +715,16 @@ function compareFilters(filterA, filterB) {

class CRLiteFilters { constructor() { + this.maybeInit(); + } + + maybeInit() { + if ( + this.client || + !Services.prefs.getBoolPref(CRLITE_FILTERS_ENABLED_PREF, true) + ) { + return; + } this.client = RemoteSettings( Services.prefs.getCharPref(CRLITE_FILTERS_COLLECTION_PREF), { @@ -729,6 +750,7 @@ class CRLiteFilters { ); return; } + this.maybeInit(); let current = await this.client.db.list(); let fullFilters = current.filter(filter => !filter.incremental); if (fullFilters.length < 1) { diff --git a/services/settings/IDBHelpers.jsm b/services/settings/IDBHelpers.jsm index 5dc59c3687ef..010a5ea82987 100644 --- a/services/settings/IDBHelpers.jsm +++ b/services/settings/IDBHelpers.jsm @@ -188,6 +188,10 @@ async function openIDB(allowUpgrades = true) { }); } if (event.oldVersion < 3) { + // Clear existing stores for a fresh start + transaction.objectStore("records").clear(); + transaction.objectStore("timestamps").clear(); + transaction.objectStore("collections").clear(); // Attachment store db.createObjectStore("attachments", { keyPath: ["cid", "attachmentId"], diff --git a/services/settings/dumps/blocklists/moz.build b/services/settings/dumps/blocklists/moz.build index 1683ab6aafa4..dd0bad30f19a 100644 --- a/services/settings/dumps/blocklists/moz.build +++ b/services/settings/dumps/blocklists/moz.build @@ -9,7 +9,6 @@ with Files('**'):

# The addons blocklist is also in mobile/android/installer/package-manifest.in FINAL_TARGET_FILES.defaults.settings.blocklists += ['addons-bloomfilters.json', - 'addons.json', 'gfx.json', 'plugins.json']

diff --git a/services/settings/dumps/main/moz.build b/services/settings/dumps/main/moz.build index 3628fa00b5e6..e25fc4214042 100644 --- a/services/settings/dumps/main/moz.build +++ b/services/settings/dumps/main/moz.build @@ -3,15 +3,10 @@ # file, You can obtain one at http://mozilla.org/MPL/2.0/.

FINAL_TARGET_FILES.defaults.settings.main += [ - 'anti-tracking-url-decoration.json', 'example.json', 'hijack-blocklists.json', 'language-dictionaries.json', - 'onboarding.json', - 'search-config.json', 'search-default-override-allowlist.json', - 'sites-classification.json', - 'url-classifier-skip-urls.json', ]

if CONFIG['MOZ_BUILD_APP'] == 'browser': diff --git a/services/settings/dumps/security-state/moz.build b/services/settings/dumps/security-state/moz.build index d8f8227a0278..37410d0fb054 100644 --- a/services/settings/dumps/security-state/moz.build +++ b/services/settings/dumps/security-state/moz.build @@ -3,7 +3,6 @@ # file, You can obtain one at http://mozilla.org/MPL/2.0/.

FINAL_TARGET_FILES.defaults.settings['security-state'] += [ - 'intermediates.json', 'onecrl.json', ]

diff --git a/toolkit/components/antitracking/antitracking.manifest b/toolkit/components/antitracking/antitracking.manifest index 5eb37f9a3f99..872e6af07575 100644 --- a/toolkit/components/antitracking/antitracking.manifest +++ b/toolkit/components/antitracking/antitracking.manifest @@ -1 +1 @@ -category profile-after-change URLDecorationAnnotationsService @mozilla.org/tracking-url-decoration-service;1 process=main +# category profile-after-change URLDecorationAnnotationsService @mozilla.org/tracking-url-decoration-service;1 process=main diff --git a/toolkit/components/antitracking/components.conf b/toolkit/components/antitracking/components.conf index ddd824522c16..cd46ed1046d5 100644 --- a/toolkit/components/antitracking/components.conf +++ b/toolkit/components/antitracking/components.conf @@ -11,13 +11,6 @@ Classes = [ 'jsm': 'resource://gre/modules/TrackingDBService.jsm', 'constructor': 'TrackingDBService', }, - { - 'cid': '{5874af6d-5719-4e1b-b155-ef4eae7fcb32}', - 'contract_ids': ['@mozilla.org/tracking-url-decoration-service;1'], - 'jsm': 'resource://gre/modules/URLDecorationAnnotationsService.jsm', - 'constructor': 'URLDecorationAnnotationsService', - 'processes': ProcessSelector.MAIN_PROCESS_ONLY, - }, { 'cid': '{90d1fd17-2018-4e16-b73c-a04a26fa6dd4}', 'contract_ids': ['@mozilla.org/purge-tracker-service;1'], diff --git a/toolkit/components/search/SearchService.jsm b/toolkit/components/search/SearchService.jsm index 608f3c475458..23cb3daa9fac 100644 --- a/toolkit/components/search/SearchService.jsm +++ b/toolkit/components/search/SearchService.jsm @@ -573,8 +573,6 @@ SearchService.prototype = { ) .finally(() => (this._ensureKnownRegionPromise = null));

- this._setupRemoteSettings().catch(Cu.reportError); - await this._loadEngines(cache);

// If we've got this far, but the application is now shutting down,