code.vegaprotocol.io/vega@v0.79.0/core/datasource/spec/builtin.go (about)

     1  // Copyright (C) 2023 Gobalsky Labs Limited
     2  //
     3  // This program is free software: you can redistribute it and/or modify
     4  // it under the terms of the GNU Affero General Public License as
     5  // published by the Free Software Foundation, either version 3 of the
     6  // License, or (at your option) any later version.
     7  //
     8  // This program is distributed in the hope that it will be useful,
     9  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    10  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    11  // GNU Affero General Public License for more details.
    12  //
    13  // You should have received a copy of the GNU Affero General Public License
    14  // along with this program.  If not, see <http://www.gnu.org/licenses/>.
    15  
    16  package spec
    17  
    18  import (
    19  	"context"
    20  	"fmt"
    21  	"strconv"
    22  	"time"
    23  
    24  	"code.vegaprotocol.io/vega/core/datasource/common"
    25  	"code.vegaprotocol.io/vega/logging"
    26  )
    27  
    28  const (
    29  	BuiltinPrefix      = "vegaprotocol.builtin"
    30  	BuiltinTimestamp   = BuiltinPrefix + ".timestamp"
    31  	BuiltinTimeTrigger = BuiltinPrefix + ".timetrigger"
    32  )
    33  
    34  type Builtin struct {
    35  	log    *logging.Logger
    36  	engine *Engine
    37  }
    38  
    39  func NewBuiltin(engine *Engine, ts TimeService) *Builtin {
    40  	builtinOracle := &Builtin{
    41  		log:    logging.NewProdLogger(),
    42  		engine: engine,
    43  	}
    44  
    45  	return builtinOracle
    46  }
    47  
    48  func (b *Builtin) OnTick(ctx context.Context, t time.Time) {
    49  	data := common.Data{
    50  		Signers: nil,
    51  		Data: map[string]string{
    52  			BuiltinTimestamp:   fmt.Sprintf("%d", t.Unix()),
    53  			BuiltinTimeTrigger: fmt.Sprintf("%d", t.Unix()),
    54  		},
    55  		MetaData: map[string]string{
    56  			"vega-time": strconv.FormatInt(t.Unix(), 10),
    57  		},
    58  	}
    59  
    60  	if err := b.engine.BroadcastData(ctx, data); err != nil {
    61  		b.log.Error("Could not broadcast timestamp from built-in oracle", logging.Error(err))
    62  	}
    63  }