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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 a875409055
commit 49cea72e41
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 return bc, nil
} }
// SetOracle sets oracle module. It doesn't protected by mutex and // SetOracle sets oracle module. It can safely be called on the running blockchain.
// must be called before `bc.Run()` to avoid data race. // To unregister Oracle service use SetOracle(nil).
func (bc *Blockchain) SetOracle(mod native.OracleService) { func (bc *Blockchain) SetOracle(mod native.OracleService) {
orc := bc.contracts.Oracle orc := bc.contracts.Oracle
if mod != nil { if mod != nil {
@ -356,8 +356,8 @@ func (bc *Blockchain) SetOracle(mod native.OracleService) {
bc.contracts.Designate.OracleService.Store(&mod) bc.contracts.Designate.OracleService.Store(&mod)
} }
// SetNotary sets notary module. It doesn't protected by mutex and // SetNotary sets notary module. It may safely be called on the running blockchain.
// must be called before `bc.Run()` to avoid data race. // To unregister Notary service use SetNotary(nil).
func (bc *Blockchain) SetNotary(mod native.NotaryService) { func (bc *Blockchain) SetNotary(mod native.NotaryService) {
if mod != nil { if mod != nil {
keys, _, err := bc.contracts.Designate.GetDesignatedByRole(bc.dao, noderoles.P2PNotary, bc.BlockHeight()) keys, _, err := bc.contracts.Designate.GetDesignatedByRole(bc.dao, noderoles.P2PNotary, bc.BlockHeight())