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connection.go
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connection.go
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// Copyright (c) 2022 Gobalsky Labs Limited
//
// Use of this software is governed by the Business Source License included
// in the LICENSE.VEGA file and at https://www.mariadb.com/bsl11.
//
// Change Date: 18 months from the later of the date of the first publicly
// available Distribution of this version of the repository, and 25 June 2022.
//
// On the date above, in accordance with the Business Source License, use
// of this software will be governed by version 3 or later of the GNU General
// Public License.
package nullchain
import (
"context"
"time"
"code.vegaprotocol.io/vega/core/examples/nullchain/config"
"github.com/pkg/errors"
datanode "code.vegaprotocol.io/vega/protos/data-node/api/v1"
"code.vegaprotocol.io/vega/protos/vega"
api "code.vegaprotocol.io/vega/protos/vega/api/v1"
"google.golang.org/grpc"
)
type Connection struct {
conn *grpc.ClientConn
core api.CoreServiceClient
datanode datanode.TradingDataServiceClient
timeout time.Duration
}
func NewConnection() (*Connection, error) {
conn, err := grpc.Dial(config.GRCPAddress, grpc.WithInsecure())
if err != nil {
return nil, err
}
return &Connection{
conn: conn,
core: api.NewCoreServiceClient(conn),
datanode: datanode.NewTradingDataServiceClient(conn),
timeout: 5 * time.Second,
}, nil
}
func (c *Connection) Close() error {
return c.conn.Close()
}
func (c *Connection) LastBlockHeight() (uint64, error) {
ctx, cancel := context.WithTimeout(context.Background(), c.timeout)
defer cancel()
bhReq := &api.LastBlockHeightRequest{}
resp, err := c.core.LastBlockHeight(ctx, bhReq)
if err != nil {
return 0, errors.WithStack(err)
}
return resp.Height, nil
}
func (c *Connection) NetworkChainID() (string, error) {
ctx, cancel := context.WithTimeout(context.Background(), c.timeout)
defer cancel()
bhReq := &api.StatisticsRequest{}
resp, err := c.core.Statistics(ctx, bhReq)
if err != nil {
return "", errors.WithStack(err)
}
return resp.Statistics.ChainId, nil
}
func (c *Connection) VegaTime() (time.Time, error) {
ctx, cancel := context.WithTimeout(context.Background(), c.timeout)
defer cancel()
gvtReq := &datanode.GetVegaTimeRequest{}
response, err := c.datanode.GetVegaTime(ctx, gvtReq)
if err != nil {
return time.Time{}, errors.WithStack(err)
}
t := time.Unix(0, response.Timestamp)
return t, nil
}
func (c *Connection) GetProposalsByParty(party *Party) ([]*vega.GovernanceData, error) {
ctx, cancel := context.WithTimeout(context.Background(), c.timeout)
defer cancel()
r, err := c.datanode.GetProposalsByParty(ctx,
&datanode.GetProposalsByPartyRequest{
PartyId: party.pubkey,
})
if err != nil {
return nil, errors.WithStack(err)
}
return r.Data, nil
}
func (c *Connection) GetProposalByReference(ref string) (*vega.Proposal, error) {
ctx, cancel := context.WithTimeout(context.Background(), c.timeout)
defer cancel()
r, err := c.datanode.GetProposalByReference(ctx,
&datanode.GetProposalByReferenceRequest{
Reference: ref,
})
if err != nil {
return nil, errors.WithStack(err)
}
return r.Data.Proposal, nil
}
func (c *Connection) GetMarkets() ([]*vega.Market, error) {
markets, err := c.datanode.Markets(context.Background(), &datanode.MarketsRequest{})
if err != nil {
return nil, errors.WithStack(err)
}
return markets.Markets, nil
}