launchdarkly::client_side::flag_manager::FlagUpdater Class Reference

#include <flag_updater.hpp>

Inheritance diagram for launchdarkly::client_side::flag_manager::FlagUpdater:

Collaboration diagram for launchdarkly::client_side::flag_manager::FlagUpdater:

Public Member Functions
	FlagUpdater (FlagStore &flag_store)
void	Init (Context const &context, std::unordered_map< std::string, ItemDescriptor > data) override
void	Upsert (Context const &context, std::string key, ItemDescriptor item) override
void	Apply (Context const &context, FlagChangeSet change_set, bool from_cache) override
std::unique_ptr< IConnection >	OnFlagChange (std::string const &key, std::function< void(std::shared_ptr< FlagValueChangeEvent >)> handler) override
Public Member Functions inherited from launchdarkly::client_side::IDataSourceUpdateSink
	IDataSourceUpdateSink (IDataSourceUpdateSink const &item)=delete
	IDataSourceUpdateSink (IDataSourceUpdateSink &&item)=delete
IDataSourceUpdateSink &	operator= (IDataSourceUpdateSink const &)=delete
IDataSourceUpdateSink &	operator= (IDataSourceUpdateSink &&)=delete
Public Member Functions inherited from launchdarkly::client_side::flag_manager::IFlagNotifier
virtual std::unique_ptr< IConnection >	OnFlagChange (std::string const &key, ChangeHandler handler)=0
	IFlagNotifier (IFlagNotifier const &item)=delete
	IFlagNotifier (IFlagNotifier &&item)=delete
IFlagNotifier &	operator= (IFlagNotifier const &)=delete
IFlagNotifier &	operator= (IFlagNotifier &&)=delete

Additional Inherited Members
Public Types inherited from launchdarkly::client_side::flag_manager::IFlagNotifier
using	ChangeHandler = std::function< void(std::shared_ptr< FlagValueChangeEvent >)>

Detailed Description

Applies data source updates to the store and dispatches the resulting change events to registered listeners.

Thread-safe. Every method takes signal_mutex_, so an update arriving on a data source's thread cannot interleave with a listener being registered or removed. Listener callbacks run on the thread that delivered the update, while that mutex is held, so a callback must not register listeners of its own.

Member Function Documentation

Apply()

void launchdarkly::client_side::flag_manager::FlagUpdater::Apply ( Context const &  context, FlagChangeSet  change_set, bool  from_cache  )

overridevirtual

Applies a changeset as a single unit. Unlike Upsert, this path does not order or reject updates by version. FDv2 reserves the per-flag version for event tracking and manages payload consistency through selectors instead.

Parameters

from_cache

Whether the changeset was loaded from the local cache, in which case it is not written back to it.

Implements launchdarkly::client_side::IDataSourceUpdateSink.

OnFlagChange()

std::unique_ptr< IConnection > launchdarkly::client_side::flag_manager::FlagUpdater::OnFlagChange ( std::string const &  key, std::function< void(std::shared_ptr< FlagValueChangeEvent >)>  handler  )

override

Listen for changes for the specific flag.

Parameters

key	The flag to listen to.
handler	The handler to signal when the flag changes.

Returns

A Connection which can be used to stop listening for changes to the flag using this handler.

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The documentation for this class was generated from the following files:

• src/flag_manager/flag_updater.hpp
• src/flag_manager/flag_updater.cpp