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proposal_store.go
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/
proposal_store.go
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package governance
import (
"github.com/Oneledger/protocol/data/keys"
"github.com/Oneledger/protocol/serialize"
"github.com/Oneledger/protocol/storage"
"github.com/pkg/errors"
)
type ProposalStore struct {
state *storage.State
szlr serialize.Serializer
prefix []byte //Current Store Prefix
prefixActive []byte
prefixPassed []byte
prefixFailed []byte
prefixFinalized []byte
prefixFinalizeFailed []byte
proposalOptions *ProposalOptionSet
}
func (ps *ProposalStore) Set(proposal *Proposal) error {
prefixed := append(ps.prefix, proposal.ProposalID...)
data, err := ps.szlr.Serialize(proposal)
if err != nil {
return errors.Wrap(err, errorSerialization)
}
err = ps.state.Set(prefixed, data)
return errors.Wrap(err, errorSettingRecord)
}
func (ps *ProposalStore) Get(proposalID ProposalID) (*Proposal, error) {
proposal := &Proposal{}
prefixed := append(ps.prefix, proposalID...)
data, err := ps.state.Get(prefixed)
if err != nil {
return nil, errors.Wrap(err, errorGettingRecord)
}
err = ps.szlr.Deserialize(data, proposal)
if err != nil {
return nil, errors.Wrap(err, errorDeSerialization)
}
return proposal, nil
}
func (ps *ProposalStore) Exists(key ProposalID) bool {
active := append(ps.prefixActive, key...)
passed := append(ps.prefixPassed, key...)
failed := append(ps.prefixFailed, key...)
finalized := append(ps.prefixFinalized, key...)
finalizeFailed := append(ps.prefixFinalizeFailed, key...)
return ps.state.Exists(active) || ps.state.Exists(passed) || ps.state.Exists(failed) || ps.state.Exists(finalized) || ps.state.Exists(finalizeFailed)
}
func (ps *ProposalStore) Delete(key ProposalID) (bool, error) {
prefixed := append(ps.prefix, key...)
res, err := ps.state.Delete(prefixed)
if err != nil {
return false, errors.Wrap(err, errorDeletingRecord)
}
return res, err
}
func (ps *ProposalStore) GetIterable() storage.Iterable {
return ps.state.GetIterable()
}
func (ps *ProposalStore) Iterate(fn func(id ProposalID, proposal *Proposal) bool) (stopped bool) {
return ps.state.IterateRange(
ps.prefix,
storage.Rangefix(string(ps.prefix)),
true,
func(key, value []byte) bool {
proposalID := ProposalID(key)
proposal := &Proposal{}
err := ps.szlr.Deserialize(value, proposal)
if err != nil {
return true
}
return fn(proposalID, proposal)
},
)
}
func (ps *ProposalStore) IterateProposer(fn func(id ProposalID, proposal *Proposal) bool, proposer keys.Address) (stopped bool) {
return ps.Iterate(func(id ProposalID, proposal *Proposal) bool {
if proposal.Proposer.Equal(proposer) {
return fn(id, proposal)
}
return false
})
}
func (ps *ProposalStore) IterateProposalType(fn func(id ProposalID, proposal *Proposal) bool, proposalType ProposalType) (stopped bool) {
return ps.Iterate(func(id ProposalID, proposal *Proposal) bool {
if proposal.Type == proposalType {
return fn(id, proposal)
}
return false
})
}
func (ps *ProposalStore) GetState() *storage.State {
return ps.state
}
func (ps *ProposalStore) WithState(state *storage.State) *ProposalStore {
ps.state = state
return ps
}
func (ps *ProposalStore) WithPrefix(prefix []byte) *ProposalStore {
ps.prefix = prefix
return ps
}
func (ps *ProposalStore) WithPrefixType(prefixType ProposalState) *ProposalStore {
switch prefixType {
case ProposalStateActive:
ps.prefix = ps.prefixActive
case ProposalStatePassed:
ps.prefix = ps.prefixPassed
case ProposalStateFailed:
ps.prefix = ps.prefixFailed
case ProposalStateFinalized:
ps.prefix = ps.prefixFinalized
case ProposalStateFinalizeFailed:
ps.prefix = ps.prefixFinalizeFailed
}
return ps
}
func (ps *ProposalStore) QueryAllStores(key ProposalID) (*Proposal, ProposalState, error) {
prefix := ps.prefix
defer func() { ps.prefix = prefix }()
proposal, err := ps.WithPrefixType(ProposalStateActive).Get(key)
if err == nil {
return proposal, ProposalStateActive, nil
}
proposal, err = ps.WithPrefixType(ProposalStatePassed).Get(key)
if err == nil {
return proposal, ProposalStatePassed, nil
}
proposal, err = ps.WithPrefixType(ProposalStateFailed).Get(key)
if err == nil {
return proposal, ProposalStateFailed, nil
}
proposal, err = ps.WithPrefixType(ProposalStateFinalized).Get(key)
if err == nil {
return proposal, ProposalStateFinalized, nil
}
proposal, err = ps.WithPrefixType(ProposalStateFinalizeFailed).Get(key)
if err == nil {
return proposal, ProposalStateFinalizeFailed, nil
}
return nil, ProposalStateInvalid, errors.Wrap(err, errorGettingRecord)
}
// Filter proposals by Proposer and Type in a specified store
func (ps *ProposalStore) FilterProposals(state ProposalState, proposer keys.Address, pType ProposalType) []Proposal {
prefix := ps.prefix
defer func() { ps.prefix = prefix }()
proposals := make([]Proposal, 0)
ps.WithPrefixType(state).Iterate(func(id ProposalID, proposal *Proposal) bool {
if pType != ProposalTypeInvalid && proposal.Type != pType {
return false
}
if len(proposer) != 0 && !proposal.Proposer.Equal(proposer) {
return false
}
proposals = append(proposals, *proposal)
return false
})
return proposals
}
func (ps *ProposalStore) SetOptions(pOpt *ProposalOptionSet) {
ps.proposalOptions = pOpt
}
func (ps *ProposalStore) GetOptions() *ProposalOptionSet {
return ps.proposalOptions
}
func (ps *ProposalStore) GetOptionsByType(typ ProposalType) *ProposalOption {
switch typ {
case ProposalTypeConfigUpdate:
return &ps.proposalOptions.ConfigUpdate
case ProposalTypeCodeChange:
return &ps.proposalOptions.CodeChange
case ProposalTypeGeneral:
return &ps.proposalOptions.General
}
return nil
}
func NewProposalStore(prefixActive string, prefixPassed string, prefixFailed string, prefixFinalized string, prefixFinalizeFailed string, state *storage.State) *ProposalStore {
return &ProposalStore{
state: state,
szlr: serialize.GetSerializer(serialize.PERSISTENT),
prefix: []byte(prefixActive),
prefixActive: []byte(prefixActive),
prefixPassed: []byte(prefixPassed),
prefixFailed: []byte(prefixFailed),
prefixFinalized: []byte(prefixFinalized),
prefixFinalizeFailed: []byte(prefixFinalizeFailed),
proposalOptions: &ProposalOptionSet{},
}
}