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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand 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.
//
// go-algorand 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 go-algorand. If not, see <https://www.gnu.org/licenses/>.
package generator
import (
"encoding/binary"
"fmt"
"math/rand"
"github.com/algorand/go-algorand/data/basics"
"github.com/algorand/go-codec/codec"
)
func weightedSelection(weights []float32, options []interface{}, defaultOption interface{}) (selection interface{}, err error) {
return weightedSelectionInternal(rand.Float32(), weights, options, defaultOption)
}
func weightedSelectionInternal(selectionNumber float32, weights []float32, options []interface{}, defaultOption interface{}) (selection interface{}, err error) {
if len(weights) != len(options) {
err = fmt.Errorf("number of weights must equal number of options: %d != %d", len(weights), len(options))
return
}
total := float32(0)
for i := 0; i < len(weights); i++ {
if selectionNumber-total < weights[i] {
selection = options[i]
return
}
total += weights[i]
}
selection = defaultOption
return
}
func indexToAccount(i uint64) (addr basics.Address) {
// Make sure we don't generate a zero address by adding 1 to i
binary.LittleEndian.PutUint64(addr[:], i+1)
return
}
func accountToIndex(a basics.Address) (addr uint64) {
// Make sure we don't generate a zero address by adding 1 to i
return binary.LittleEndian.Uint64(a[:]) - 1
}
func convertToGenesisBalances(balances []uint64) map[basics.Address]basics.AccountData {
genesisBalances := make(map[basics.Address]basics.AccountData)
for i, balance := range balances {
genesisBalances[indexToAccount(uint64(i))] = basics.AccountData{
MicroAlgos: basics.MicroAlgos{Raw: balance},
}
}
return genesisBalances
}
func encode(handle codec.Handle, obj interface{}) ([]byte, error) {
var output []byte
enc := codec.NewEncoderBytes(&output, handle)
err := enc.Encode(obj)
if err != nil {
return nil, fmt.Errorf("failed to encode object: %w", err)
}
return output, nil
}
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