879c44f661
* [core] Introduce FileSourceManager and use it for default platform impl
- Add `FileSourceManager` interface that provides access to `FileSource`
instances and means of registering / unregistering `FileSource` factories
- Split `DefaultFileSource` into smaller parts
- Add `DatabaseFileSource` interface and it's default implementation
- Remove inter-dependencies between concrete `FileSource` classes
* [build] Add files to next build system
* [core] Add generic property setters / getters
* [core] Remove setOnlineStatus from OnlineFileSource interface
* [core] Hide threading implementation details from DatabaseFileSource interface
* [core] Make DB file source methods virtual
* [core] Add documentation for DatabaseFileSource and rename one method
* [core] Use simple callback instead of ActorRef
* [core] Remove ActorRef from OnlineFileSource public header
* [core] Add callback to FileSource::forward async API
* [core] Pass OfflineRegionDefinition by value
* [core] Update tests to use modular file sources
* [core] Update unit tests
* [core] Update unit tests after rebase
* [core] Backport low prio fix for cached requests
* [core] Backport pack database
* [core] Return removed factory from unRegisterFileSourceFactory
* [core] Rename shadowed args in onlinefilesource
* [core] Remove simple std::function callback aliases
* [core] Expose online file source property keys in public header file
* [test-runner] Add proxy file source test runner
* [cache] Update mbgl-cache utility to use new file source
* [metrics] Rebaseline binary size metrics
* [offline] Update offline utility
* [core] Update changelog
51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
#pragma once
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#include <mbgl/storage/file_source.hpp>
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namespace mbgl {
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class ResourceOptions;
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/**
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* @brief A singleton class responsible for managing file sources.
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*
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* The FileSourceManager provides following functionality:
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*
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* - provides access to file sources of a specific type and configuration
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* - caches previously created file sources of a (type, configuration) tuples
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* - allows to register and unregister file source factories
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*/
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class FileSourceManager {
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public:
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using FileSourceFactory = std::function<std::unique_ptr<FileSource>(const ResourceOptions&)>;
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/**
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* @brief A singleton getter.
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*
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* @return FileSourceManager*
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*/
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static FileSourceManager* get() noexcept;
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// Returns shared instance of a file source for (type, options) tuple.
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// Creates new instance via registered factory if needed. If new instance cannot be
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// created, nullptr would be returned.
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std::shared_ptr<FileSource> getFileSource(FileSourceType, const ResourceOptions&) noexcept;
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// Registers file source factory for a provided FileSourceType type. If factory for the
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// same type was already registered, will unregister previously registered factory.
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// Provided factory must not be null.
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virtual void registerFileSourceFactory(FileSourceType, FileSourceFactory&&) noexcept;
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// Unregisters file source factory. If there are no registered factories for a FileSourceType
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// invocation has no effect.
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virtual FileSourceFactory unRegisterFileSourceFactory(FileSourceType) noexcept;
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protected:
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FileSourceManager();
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class Impl;
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std::unique_ptr<Impl> impl;
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virtual ~FileSourceManager();
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};
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} // namespace mbgl
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