storages::mongo::DistLockStrategy Class Reference

Table of Contents

• Public Member Functions
• Detailed Description
• Member Function Documentation
• Acquire()
• Release()

Strategy for mongodb-based distributed locking. More...

#include <userver/storages/mongo/dist_lock_strategy.hpp>

Inheritance diagram for storages::mongo::DistLockStrategy:

Collaboration diagram for storages::mongo::DistLockStrategy:

Public Member Functions
	DistLockStrategy (Collection collection, std::string lock_name)
	Targets a distributed lock in a specified collection as a host.
	DistLockStrategy (Collection collection, std::string lock_name, std::string owner)
void	Acquire (std::chrono::milliseconds lock_ttl, const std::string &locker_id) override
void	Release (const std::string &locker_id) override

Detailed Description

Strategy for mongodb-based distributed locking.

Definition at line 14 of file dist_lock_strategy.hpp.

Member Function Documentation

Acquire()

void storages::mongo::DistLockStrategy::Acquire ( std::chrono::milliseconds  lock_ttl, const std::string &  locker_id  )

overridevirtual

Acquires the distributed lock.

Parameters

lock_ttl	The duration for which the lock must be held.
locker_id	Globally unique ID of the locking entity.

Exceptions

LockIsAcquiredByAnotherHostError	when the lock is busy
anything	else when the locking fails, strategy is responsible for cleanup, Release won't be invoked.

Implements dist_lock::DistLockStrategyBase.

Release()

void storages::mongo::DistLockStrategy::Release ( const std::string &  locker_id )

overridevirtual

Releases the lock.

Parameters

locker_id

Globally unique ID of the locking entity, must be the same as in Acquire().

Note

Exceptions are ignored.

Implements dist_lock::DistLockStrategyBase.

---

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

• userver/storages/mongo/dist_lock_strategy.hpp