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core: improve documentation to SetOracle/SetNotary

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I've carefully checked the way how new service can be added to the
Blockchain instance or to be removed from it. Current implemention
of SetNotary and SetOracle methods doesn't contain dangerous code,
and native contracts have atomic values everywhere where service
is stored.

Current implementation of Notary, Oracle and StateRoot services'
reload/disabling/enabling on SIGUSR1 is safe and doesn't require
any adjustment.

This commit closes #2944, it's not a bug in the code, it's just
stale documentation.

Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>
This commit is contained in:
Anna Shaleva 2023-04-13 18:20:52 +03:00
parent d5f964f181
commit c880873105
1 changed files with 4 additions and 4 deletions
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8
pkg/core/blockchain.go
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@ -328,8 +328,8 @@ func NewBlockchain(s storage.Store, cfg config.Blockchain, log *zap.Logger) (*Bl
return bc, nil
}
// SetOracle sets oracle module. It doesn't protected by mutex and
// must be called before `bc.Run()` to avoid data race.
// SetOracle sets oracle module. It can safely be called on the running blockchain.
// To unregister Oracle service use SetOracle(nil).
func (bc *Blockchain) SetOracle(mod native.OracleService) {
orc := bc.contracts.Oracle
if mod != nil {
@ -356,8 +356,8 @@ func (bc *Blockchain) SetOracle(mod native.OracleService) {
bc.contracts.Designate.OracleService.Store(&mod)
}
// SetNotary sets notary module. It doesn't protected by mutex and
// must be called before `bc.Run()` to avoid data race.
// SetNotary sets notary module. It may safely be called on the running blockchain.
// To unregister Notary service use SetNotary(nil).
func (bc *Blockchain) SetNotary(mod native.NotaryService) {
if mod != nil {
keys, _, err := bc.contracts.Designate.GetDesignatedByRole(bc.dao, noderoles.P2PNotary, bc.BlockHeight())