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delegations.go
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delegations.go
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// Copyright (C) 2023 Gobalsky Labs Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package sqlstore
import (
"context"
"fmt"
"strings"
"code.vegaprotocol.io/vega/datanode/entities"
"code.vegaprotocol.io/vega/datanode/metrics"
v2 "code.vegaprotocol.io/vega/protos/data-node/api/v2"
"github.com/georgysavva/scany/pgxscan"
)
type Delegations struct {
*ConnectionSource
}
var delegationsOrdering = TableOrdering{
ColumnOrdering{Name: "vega_time", Sorting: ASC},
ColumnOrdering{Name: "party_id", Sorting: ASC},
ColumnOrdering{Name: "node_id", Sorting: ASC},
ColumnOrdering{Name: "epoch_id", Sorting: ASC},
}
func NewDelegations(connectionSource *ConnectionSource) *Delegations {
d := &Delegations{
ConnectionSource: connectionSource,
}
return d
}
func (ds *Delegations) Add(ctx context.Context, d entities.Delegation) error {
defer metrics.StartSQLQuery("Delegations", "Add")()
_, err := ds.Connection.Exec(ctx,
`INSERT INTO delegations(
party_id,
node_id,
epoch_id,
amount,
tx_hash,
vega_time,
seq_num)
VALUES ($1, $2, $3, $4, $5, $6, $7);`,
d.PartyID, d.NodeID, d.EpochID, d.Amount, d.TxHash, d.VegaTime, d.SeqNum)
return err
}
func (ds *Delegations) GetAll(ctx context.Context) ([]entities.Delegation, error) {
defer metrics.StartSQLQuery("Delegations", "GetAll")()
delegations := []entities.Delegation{}
err := pgxscan.Select(ctx, ds.Connection, &delegations, `
SELECT * from delegations;`)
return delegations, err
}
func (ds *Delegations) GetByTxHash(ctx context.Context, txHash entities.TxHash) ([]entities.Delegation, error) {
defer metrics.StartSQLQuery("Delegations", "GetByTxHash")()
var delegations []entities.Delegation
query := `SELECT * FROM delegations WHERE tx_hash = $1`
err := pgxscan.Select(ctx, ds.Connection, &delegations, query, txHash)
if err != nil {
return nil, err
}
return delegations, nil
}
func (ds *Delegations) Get(ctx context.Context,
partyIDHex *string,
nodeIDHex *string,
epochID *int64,
pagination entities.Pagination,
) ([]entities.Delegation, entities.PageInfo, error) {
query := `SELECT * from delegations_current`
var args []interface{}
var pageInfo entities.PageInfo
conditions := []string{}
if partyIDHex != nil {
partyID := entities.PartyID(*partyIDHex)
conditions = append(conditions, fmt.Sprintf("party_id=%s", nextBindVar(&args, partyID)))
}
if nodeIDHex != nil {
nodeID := entities.NodeID(*nodeIDHex)
conditions = append(conditions, fmt.Sprintf("node_id=%s", nextBindVar(&args, nodeID)))
}
if epochID != nil {
conditions = append(conditions, fmt.Sprintf("epoch_id=%s", nextBindVar(&args, *epochID)))
}
if len(conditions) > 0 {
query = fmt.Sprintf("%s WHERE %s", query, strings.Join(conditions, " AND "))
}
defer metrics.StartSQLQuery("Delegations", "Get")()
delegations := []entities.Delegation{}
var err error
if pagination != nil {
switch p := pagination.(type) {
case entities.CursorPagination:
query, args, err = PaginateQuery[entities.DelegationCursor](query, args, delegationsOrdering, p)
if err != nil {
return nil, pageInfo, err
}
err := pgxscan.Select(ctx, ds.Connection, &delegations, query, args...)
if err != nil {
return nil, pageInfo, fmt.Errorf("querying delegations: %w", err)
}
delegations, pageInfo = entities.PageEntities[*v2.DelegationEdge](delegations, p)
return delegations, pageInfo, nil
default:
panic("unsupported pagination")
}
}
err = pgxscan.Select(ctx, ds.Connection, &delegations, query, args...)
if err != nil {
return nil, pageInfo, fmt.Errorf("querying delegations: %w", err)
}
return delegations, pageInfo, nil
}