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* [core] Stop download when tile limit is reachedJesse Bounds2016-03-171-4/+60
| | | | | | | | The tile limit guard (when used) stops a download from continuing when the tile limit is reached. This wraps the guard in a method and employs it in both places currently necessary to ensure the guard has a chance to function. Tests have been updated to ensure the fix works for a less trivial tile limit scenario.
* [core] Implement a vacuum strategy for the offline databaseJohn Firebaugh2016-03-171-0/+28
| | | | Enable `PRAGMA auto_vacuum = INCREMENTAL`, and perform a `PRAGMA incremental_vacuum` when deleting an offline region.
* [core] Deactivate offline region upon completionMinh Nguyễn2016-03-111-6/+15
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* [core] Deactivate OfflineDownload when the tile count limit is hitJohn Firebaugh2016-03-091-1/+13
| | | | This is a better behavior than sending hundreds or thousands of tileCountLimitExceeded notifications.
* [core] Fix offline status reporting regressionsJohn Firebaugh2016-03-081-12/+38
| | | | | | The core of the change is ensuring that ensureResource doesn't release Zalgo: it should be consistently async, rather than async in the case that the resource doesn't exist in the database, but sync if it does. This ensures that status is reported in a more consistent sequence, regardless of the database state.
* [tests] Add utest for NetworkStatus::Online/OfflineThiago Marcos P. Santos2016-03-081-0/+33
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* [core] Ensure OfflineRegionStatus::downloadState is accurately reportedJohn Firebaugh2016-03-071-0/+31
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* [core] explicitly initialize a few fields to nullKonstantin Käfer2016-03-041-2/+2
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* [core] Fix offline status reporting with pre-existing tiles (#4147)John Firebaugh2016-03-041-0/+75
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* [tests] Unit tests for clock skew retry timeoutThiago Marcos P. Santos2016-02-262-0/+40
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* [tests] Add a test for the retry delay on expired responseThiago Marcos P. Santos2016-02-261-0/+35
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* [core] Limit total number of offline Mapbox tilesJohn Firebaugh2016-02-242-0/+90
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* [core] Enforce foreign key constraints in the offline databaseJohn Firebaugh2016-02-242-10/+33
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* [core] Fix subtle bug in OfflineDatabase with updated resourcesJohn Firebaugh2016-02-241-13/+37
| | | | | | SQLite REPLACE is *not* UPSERT. If a conflict occurs, it first deletes the existing row, then inserts a new row. This means that AUTOINCREMENT primary keys change. This will break foreign keys to that value, which we use. Instead we must try an UPDATE, and fall back to an INSERT if the UPDATE changes zero rows.
* [core] status.requiredResourceCountIsIndeterminate ⇢ ↵John Firebaugh2016-02-241-7/+7
| | | | | | status.requiredResourceCountIsPrecise Change the name and reverse the sense. Naming things in the positive is better than naming them in the negative.
* [tests] Add utests for HTTP 200 with no dataThiago Marcos P. Santos2016-02-232-0/+29
| | | | The implementation should return a valid empty string.
* [tests] Timer is not needed to keep the main loop aliveThiago Marcos P. Santos2016-02-221-5/+0
| | | | The loop will be alive until `.stop()` is called.
* [tests] Fix compilation error in test/storage/headers.cppBruno de Oliveira Abinader2016-02-161-13/+13
| | | | | | error: converting ‘false’ to pointer type for argument 1 of ‘char testing::internal::IsNullLiteralHelper(testing::internal::Secret*)’ [-Werror=conversion-null]
* [tests] Fix buildJohn Firebaugh2016-02-111-1/+1
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* [core] Always store tiles without ratio support with ratio = 1John Firebaugh2016-02-101-8/+18
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* [core] Optimize offline database schemaJohn Firebaugh2016-02-101-5/+6
| | | | | * Under the hood, SQLite creates surrogate keys (ROWID) anyway. We may as well take advantage of this and use the surrogates for foreign keys as well, since they are simpler and more efficient than compound foreign keys. * Create indexes for efficient eviction queries
* [core] Retry errors encountered during offline downloadsJohn Firebaugh2016-02-101-0/+32
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* [core] Eliminate maximumCacheEntrySizeJohn Firebaugh2016-02-101-26/+44
| | | | Instead, the eviction policy accounts for the actual size needed for an incoming put.
* [core] Implement an eviction policy for OfflineDatabaseJohn Firebaugh2016-02-101-0/+72
| | | | | | | | | | | | | When inserting an cached resource, or removing a region, remove least-recently used resources and tiles, not used by offline regions, until the used database size, as calculated by multiplying the number of in-use pages by the page size, is less than the maximum cache size minus 5 times the page size. In addition, OfflineDatabase may be configured to ignore cache puts of individual resources larger than a certain size. This policy is similar but not identical to the former SQLiteCache policy: * It accounts for offline, by exempting resources required by offline regions from eviction. * It must delete from two tables (resources and tiles), rather than one. Currently the strategy is naive: evict 50 rows at a time from each table. * It makes maximumCacheSize and maximumCacheEntrySize completely independent. The SQLiteCache implementation evicted when `usedSize > maximumCacheSize - 2 * maximumCacheEntrySize`. This evicts when `usedSize > maximumCacheSize - 5 * pageSize`. * It uses a non-unlimited default value for maximumCacheSize: 50 MB. We should have always had a limit in place; "a cache without an eviction policy is a resource leak".
* [core] Reset SQLite statements after use in order to release locksJohn Firebaugh2016-02-101-0/+32
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* Add binary for smoke-testing offline downloadsJohn Firebaugh2016-02-101-17/+0
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* [core] Interface and implementation for offlineJohn Firebaugh2016-02-103-0/+451
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* [all] Don't interpret 404s on non-tile resources as "no content"John Firebaugh2016-02-103-7/+61
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* [all] Do not set Response data for 404sJohn Firebaugh2016-02-102-6/+3
| | | | For AssetFileSource and the node FileSource this was already the case; this makes the other implementations consistent.
* [core] Reimplement existing caching within an offline-capable database schemaJohn Firebaugh2016-02-108-975/+422
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* [core] Moving caching logic to DefaultFileSourceJohn Firebaugh2016-02-1011-43/+32
| | | | This results in OnlineFileSource containing precisely the logic we want for reuse by OfflineFileSource, and no more.
* [tests] Add test for AssetFileSource URL encodingJohn Firebaugh2016-02-081-0/+21
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* [core] Remove Response::Error::Reason::CanceledJohn Firebaugh2016-02-041-1/+0
| | | | There is no such thing as a cancelled response, only cancelled requests. A request that is cancelled does not have its callback called with a Response.
* [core] Rationalize Resource initializationJohn Firebaugh2016-01-291-0/+50
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* Cleanup std::chrono usageBruno de Oliveira Abinader2016-01-252-4/+5
| | | | Use mbgl::Duration and mbgl::{,Milli}Seconds whenever possible.
* [core] Include prior values of caching headers in ResourceJohn Firebaugh2016-01-221-4/+2
| | | | This allows the FileSource interface itself to support revalidation. We could (and probably should) now rewrite HTTPContextBase implementations as FileSource implementations.
* [core] Polyfill std::chrono::absJohn Firebaugh2016-01-221-3/+1
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* [core] Merge rfc1123, iso8601, and parse_date into chrono.hpp and fix their APIJohn Firebaugh2016-01-221-1/+0
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* [core] Use better types for modified / expires / etagJohn Firebaugh2016-01-2114-81/+81
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* [core] Eliminate Response::stale and inline Response::isExpired()John Firebaugh2016-01-2112-116/+64
| | | | Response::isExpired() had subtle and potentially confusing behavior around Seconds::zero(). It's best to inline it and comment why.
* [core] use stale glyphsKonstantin Käfer2016-01-151-2/+31
| | | | Updating glyphs is still unsupported, and there's no good use case for doing so. When we're using a stale glyph PBF, and the fresh answer contains changed to that glyph, we will continue to use the old glyph.
* [core] use stale sprite dataKonstantin Käfer2016-01-151-0/+28
| | | | This is a naïve implementation that essentially merges updated data into existing data. It will *not* remove icons from the stale sprite if they aren't present in the fresh sprite (we aren't tracking the source of a sprite, and the user could have changed it as well). Similarly, it will not update icons that have changed in dimension. This is a rare edge case and probably not worth implementing.
* [core] use stale and refreshing TileJSON/GeoJSON dataKonstantin Käfer2016-01-151-0/+23
| | | | We're now supporting using stale TileJSON and GeoJSON data. When we receive a new answer with an updated TileJSON file, we're replacing the Source's metadata with the new one and trigger updates to make sure we're loading the correct tiles. Similarly, GeoJSON data will be reparsed.
* [core] use stale stylesKonstantin Käfer2016-01-152-0/+54
| | | | This adds support for using cached styles that are stale. They're treated like changing styles; when the refreshed style changed compared to the one we've already had, we're swapping out the entire style, which might cause a slight flicker.
* [core] Support multiple paths in SQLiteCache::getShared()Konstantin Käfer2016-01-151-0/+34
| | | | If you use many different caches, expired weak_ptrs will pile up in the unordered_map, but that is an edge case, and you probably shouldn't do that anyway.
* [core] Restore existing response bodyJohn Firebaugh2016-01-141-0/+4
| | | | Until #2721 lands we still need this.
* [core] Let SQLiteCache decide when store or refresh responsesJohn Firebaugh2016-01-142-5/+6
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* [core] Add an explicit "not modified" indicator to ResponseJohn Firebaugh2016-01-141-6/+2
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* [core] std::shared_ptr<const Response> ⇢ const Response&John Firebaugh2016-01-143-32/+27
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* [core] Eliminate FileCache interfaceJohn Firebaugh2016-01-141-3/+3
| | | | There is only one implementation and we're unlikely to add more.