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Allow storage service implementation to run in client context

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If the storage service implementation can operate in
client session context, avoid resetting/restoring globals
when changing to storage service scope in transaction.cpp.
This commit is contained in:
Teemu Ollakka 2023-09-19 14:03:41 +03:00
parent 3d998f9ad6
commit 13e9403eba
2 changed files with 19 additions and 3 deletions
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11
include/wsrep/storage_service.hpp
View File

@ -92,6 +92,17 @@ namespace wsrep
virtual void store_globals() = 0;
virtual void reset_globals() = 0;
/**
* Return true if the implementation requires storing
* and restoring global state. Return true by default
* since this is the original behavior. Stateless
* implementations may override.
*/
virtual bool requires_globals() const {
return true;
}
};
}

11
src/transaction.cpp
View File

@ -63,8 +63,10 @@ namespace
{
throw wsrep::runtime_error("Null client_state provided");
}
client_service_.reset_globals();
storage_service_->store_globals();
if (storage_service_->requires_globals()) {
client_service_.reset_globals();
storage_service_->store_globals();
}
}
wsrep::storage_service& storage_service()
@ -74,8 +76,11 @@ namespace
~scoped_storage_service()
{
bool restore_globals = storage_service_->requires_globals();
deleter_(storage_service_);
client_service_.store_globals();
if (restore_globals) {
client_service_.store_globals();
}
}
private:
scoped_storage_service(const scoped_storage_service&);