code.vegaprotocol.io/vega@v0.79.0/core/integration/steps/market/margin_calculators.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 market
    17  
    18  import (
    19  	"embed"
    20  	"fmt"
    21  
    22  	"code.vegaprotocol.io/vega/core/integration/steps/helpers"
    23  	"code.vegaprotocol.io/vega/core/integration/steps/market/defaults"
    24  	types "code.vegaprotocol.io/vega/protos/vega"
    25  
    26  	"github.com/jinzhu/copier"
    27  )
    28  
    29  var (
    30  	//go:embed defaults/margin-calculator/*.json
    31  	defaultMarginCalculators         embed.FS
    32  	defaultMarginCalculatorFileNames = []string{
    33  		"defaults/margin-calculator/default-margin-calculator.json",
    34  		"defaults/margin-calculator/default-capped-margin-calculator.json",
    35  		"defaults/margin-calculator/default-overkill-margin-calculator.json",
    36  	}
    37  )
    38  
    39  type marginCalculators struct {
    40  	config map[string]*types.MarginCalculator
    41  }
    42  
    43  func newMarginCalculators(unmarshaler *defaults.Unmarshaler) *marginCalculators {
    44  	config := &marginCalculators{
    45  		config: map[string]*types.MarginCalculator{},
    46  	}
    47  
    48  	contentReaders := helpers.ReadAll(defaultMarginCalculators, defaultMarginCalculatorFileNames)
    49  	for name, contentReader := range contentReaders {
    50  		marginCalculator, err := unmarshaler.UnmarshalMarginCalculator(contentReader)
    51  		if err != nil {
    52  			panic(fmt.Errorf("couldn't unmarshal default margin calculator %s: %v", name, err))
    53  		}
    54  		if err := config.Add(name, marginCalculator); err != nil {
    55  			panic(fmt.Errorf("failed to add default margin calculator %s: %v", name, err))
    56  		}
    57  	}
    58  
    59  	return config
    60  }
    61  
    62  func (c *marginCalculators) Add(name string, calculator *types.MarginCalculator) error {
    63  	c.config[name] = calculator
    64  	return nil
    65  }
    66  
    67  func (c *marginCalculators) Get(name string) (*types.MarginCalculator, error) {
    68  	calculator, ok := c.config[name]
    69  	if !ok {
    70  		return calculator, fmt.Errorf("no margin calculator \"%s\" registered", name)
    71  	}
    72  	// Copy to avoid modification between tests.
    73  	copyConfig := &types.MarginCalculator{}
    74  	if err := copier.Copy(copyConfig, calculator); err != nil {
    75  		panic(fmt.Errorf("failed to deep copy margin calculator: %v", err))
    76  	}
    77  	return copyConfig, nil
    78  }