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margin_calculators.go
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margin_calculators.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 market
import (
"embed"
"fmt"
"code.vegaprotocol.io/vega/core/integration/steps/helpers"
"code.vegaprotocol.io/vega/core/integration/steps/market/defaults"
types "code.vegaprotocol.io/vega/protos/vega"
"github.com/jinzhu/copier"
)
var (
//go:embed defaults/margin-calculator/*.json
defaultMarginCalculators embed.FS
defaultMarginCalculatorFileNames = []string{
"defaults/margin-calculator/default-margin-calculator.json",
"defaults/margin-calculator/default-overkill-margin-calculator.json",
}
)
type marginCalculators struct {
config map[string]*types.MarginCalculator
}
func newMarginCalculators(unmarshaler *defaults.Unmarshaler) *marginCalculators {
config := &marginCalculators{
config: map[string]*types.MarginCalculator{},
}
contentReaders := helpers.ReadAll(defaultMarginCalculators, defaultMarginCalculatorFileNames)
for name, contentReader := range contentReaders {
marginCalculator, err := unmarshaler.UnmarshalMarginCalculator(contentReader)
if err != nil {
panic(fmt.Errorf("couldn't unmarshal default margin calculator %s: %v", name, err))
}
if err := config.Add(name, marginCalculator); err != nil {
panic(fmt.Errorf("failed to add default margin calculator %s: %v", name, err))
}
}
return config
}
func (c *marginCalculators) Add(name string, calculator *types.MarginCalculator) error {
c.config[name] = calculator
return nil
}
func (c *marginCalculators) Get(name string) (*types.MarginCalculator, error) {
calculator, ok := c.config[name]
if !ok {
return calculator, fmt.Errorf("no margin calculator \"%s\" registered", name)
}
// Copy to avoid modification between tests.
copyConfig := &types.MarginCalculator{}
if err := copier.Copy(copyConfig, calculator); err != nil {
panic(fmt.Errorf("failed to deep copy margin calculator: %v", err))
}
return copyConfig, nil
}