/
query.go
73 lines (59 loc) · 2.45 KB
/
query.go
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package governance
import (
"context"
abciAPI "github.com/oasisprotocol/oasis-core/go/consensus/tendermint/api"
governanceState "github.com/oasisprotocol/oasis-core/go/consensus/tendermint/apps/governance/state"
governance "github.com/oasisprotocol/oasis-core/go/governance/api"
upgrade "github.com/oasisprotocol/oasis-core/go/upgrade/api"
)
// Query is the governance query interface.
type Query interface {
ActiveProposals(context.Context) ([]*governance.Proposal, error)
Proposals(context.Context) ([]*governance.Proposal, error)
Proposal(context.Context, uint64) (*governance.Proposal, error)
Votes(context.Context, uint64) ([]*governance.VoteEntry, error)
PendingUpgrades(context.Context) ([]*upgrade.Descriptor, error)
Genesis(context.Context) (*governance.Genesis, error)
ConsensusParameters(context.Context) (*governance.ConsensusParameters, error)
}
// QueryFactory is the governance query factory.
type QueryFactory struct {
state abciAPI.ApplicationQueryState
}
// QueryAt returns the governance query interface for a specific height.
func (qf *QueryFactory) QueryAt(ctx context.Context, height int64) (Query, error) {
state, err := governanceState.NewImmutableState(ctx, qf.state, height)
if err != nil {
return nil, err
}
return &governanceQuerier{state}, nil
}
type governanceQuerier struct {
state *governanceState.ImmutableState
}
func (gq *governanceQuerier) ActiveProposals(ctx context.Context) ([]*governance.Proposal, error) {
return gq.state.ActiveProposals(ctx)
}
func (gq *governanceQuerier) Proposals(ctx context.Context) ([]*governance.Proposal, error) {
return gq.state.Proposals(ctx)
}
func (gq *governanceQuerier) Proposal(ctx context.Context, id uint64) (*governance.Proposal, error) {
return gq.state.Proposal(ctx, id)
}
func (gq *governanceQuerier) Votes(ctx context.Context, id uint64) ([]*governance.VoteEntry, error) {
return gq.state.Votes(ctx, id)
}
func (gq *governanceQuerier) PendingUpgrades(ctx context.Context) ([]*upgrade.Descriptor, error) {
return gq.state.PendingUpgrades(ctx)
}
func (gq *governanceQuerier) ConsensusParameters(ctx context.Context) (*governance.ConsensusParameters, error) {
return gq.state.ConsensusParameters(ctx)
}
func (app *governanceApplication) QueryFactory() interface{} {
return &QueryFactory{app.state}
}
// NewQueryFactory returns a new QueryFactory backed by the given state
// instance.
func NewQueryFactory(state abciAPI.ApplicationQueryState) *QueryFactory {
return &QueryFactory{state}
}