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fix(eventstore): prevent allocation of filtered events (#6749)

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* fix(eventstore): prevent allocation of filtered events

Directly reduce each event obtained from a sql.Rows scan,
so that we do not have to allocate all events in a slice.

* reinstate the mutex as RWMutex

* scan data directly

* add todos

* fix(writemodels): add reduce of parent

* test: remove comment

* update comments

---------

Co-authored-by: adlerhurst <[email protected]>
This commit is contained in:
Tim Möhlmann
2023-10-19 15:21:31 +00:00
committed by GitHub
co-authored by adlerhurst
parent 459761d99a
commit ab79855cf0
16 changed files with 150 additions and 93 deletions
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internal/command/preparation/command.go
+2
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@@ -25,6 +25,8 @@ var (
)
// PrepareCommands checks the passed validations and if ok creates the commands
//
// Deprecated: filter causes unneeded allocation. Use [eventstore.FilterToQueryReducer] instead.
func PrepareCommands(ctx context.Context, filter FilterToQueryReducer, validations ...Validation) (cmds []eventstore.Command, err error) {
commanders, err := validate(validations)
if err != nil {