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static_service.go
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/
static_service.go
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// Copyright (C) 2019-2023, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package avm
import (
"errors"
"fmt"
"net/http"
stdjson "encoding/json"
"github.com/ava-labs/avalanchego/ids"
"github.com/ava-labs/avalanchego/utils"
"github.com/ava-labs/avalanchego/utils/formatting"
"github.com/ava-labs/avalanchego/utils/formatting/address"
"github.com/ava-labs/avalanchego/utils/json"
"github.com/ava-labs/avalanchego/vms/avm/fxs"
"github.com/ava-labs/avalanchego/vms/avm/txs"
"github.com/ava-labs/avalanchego/vms/components/avax"
"github.com/ava-labs/avalanchego/vms/components/verify"
"github.com/ava-labs/avalanchego/vms/nftfx"
"github.com/ava-labs/avalanchego/vms/propertyfx"
"github.com/ava-labs/avalanchego/vms/secp256k1fx"
)
var (
errUnknownAssetType = errors.New("unknown asset type")
_ avax.TransferableIn = (*secp256k1fx.TransferInput)(nil)
_ verify.State = (*secp256k1fx.MintOutput)(nil)
_ avax.TransferableOut = (*secp256k1fx.TransferOutput)(nil)
_ fxs.FxOperation = (*secp256k1fx.MintOperation)(nil)
_ verify.Verifiable = (*secp256k1fx.Credential)(nil)
_ verify.State = (*nftfx.MintOutput)(nil)
_ verify.State = (*nftfx.TransferOutput)(nil)
_ fxs.FxOperation = (*nftfx.MintOperation)(nil)
_ fxs.FxOperation = (*nftfx.TransferOperation)(nil)
_ verify.Verifiable = (*nftfx.Credential)(nil)
_ verify.State = (*propertyfx.MintOutput)(nil)
_ verify.State = (*propertyfx.OwnedOutput)(nil)
_ fxs.FxOperation = (*propertyfx.MintOperation)(nil)
_ fxs.FxOperation = (*propertyfx.BurnOperation)(nil)
_ verify.Verifiable = (*propertyfx.Credential)(nil)
)
// StaticService defines the base service for the asset vm
type StaticService struct{}
func CreateStaticService() *StaticService {
return &StaticService{}
}
// BuildGenesisArgs are arguments for BuildGenesis
type BuildGenesisArgs struct {
NetworkID json.Uint32 `json:"networkID"`
GenesisData map[string]AssetDefinition `json:"genesisData"`
Encoding formatting.Encoding `json:"encoding"`
}
type AssetDefinition struct {
Name string `json:"name"`
Symbol string `json:"symbol"`
Denomination json.Uint8 `json:"denomination"`
InitialState map[string][]interface{} `json:"initialState"`
Memo string `json:"memo"`
}
// BuildGenesisReply is the reply from BuildGenesis
type BuildGenesisReply struct {
Bytes string `json:"bytes"`
Encoding formatting.Encoding `json:"encoding"`
}
// BuildGenesis returns the UTXOs such that at least one address in [args.Addresses] is
// referenced in the UTXO.
func (*StaticService) BuildGenesis(_ *http.Request, args *BuildGenesisArgs, reply *BuildGenesisReply) error {
parser, err := txs.NewParser([]fxs.Fx{
&secp256k1fx.Fx{},
&nftfx.Fx{},
&propertyfx.Fx{},
})
if err != nil {
return err
}
g := Genesis{}
genesisCodec := parser.GenesisCodec()
for assetAlias, assetDefinition := range args.GenesisData {
assetMemo, err := formatting.Decode(args.Encoding, assetDefinition.Memo)
if err != nil {
return fmt.Errorf("problem formatting asset definition memo due to: %w", err)
}
asset := GenesisAsset{
Alias: assetAlias,
CreateAssetTx: txs.CreateAssetTx{
BaseTx: txs.BaseTx{BaseTx: avax.BaseTx{
NetworkID: uint32(args.NetworkID),
BlockchainID: ids.Empty,
Memo: assetMemo,
}},
Name: assetDefinition.Name,
Symbol: assetDefinition.Symbol,
Denomination: byte(assetDefinition.Denomination),
},
}
if len(assetDefinition.InitialState) > 0 {
initialState := &txs.InitialState{
FxIndex: 0, // TODO: Should lookup secp256k1fx FxID
}
for assetType, initialStates := range assetDefinition.InitialState {
switch assetType {
case "fixedCap":
for _, state := range initialStates {
b, err := stdjson.Marshal(state)
if err != nil {
return fmt.Errorf("problem marshaling state: %w", err)
}
holder := Holder{}
if err := stdjson.Unmarshal(b, &holder); err != nil {
return fmt.Errorf("problem unmarshaling holder: %w", err)
}
_, addrbuff, err := address.ParseBech32(holder.Address)
if err != nil {
return fmt.Errorf("problem parsing holder address: %w", err)
}
addr, err := ids.ToShortID(addrbuff)
if err != nil {
return fmt.Errorf("problem parsing holder address: %w", err)
}
initialState.Outs = append(initialState.Outs, &secp256k1fx.TransferOutput{
Amt: uint64(holder.Amount),
OutputOwners: secp256k1fx.OutputOwners{
Threshold: 1,
Addrs: []ids.ShortID{addr},
},
})
}
case "variableCap":
for _, state := range initialStates {
b, err := stdjson.Marshal(state)
if err != nil {
return fmt.Errorf("problem marshaling state: %w", err)
}
owners := Owners{}
if err := stdjson.Unmarshal(b, &owners); err != nil {
return fmt.Errorf("problem unmarshaling Owners: %w", err)
}
out := &secp256k1fx.MintOutput{
OutputOwners: secp256k1fx.OutputOwners{
Threshold: 1,
},
}
for _, addrStr := range owners.Minters {
_, addrBytes, err := address.ParseBech32(addrStr)
if err != nil {
return fmt.Errorf("problem parsing minters address: %w", err)
}
addr, err := ids.ToShortID(addrBytes)
if err != nil {
return fmt.Errorf("problem parsing minters address: %w", err)
}
out.Addrs = append(out.Addrs, addr)
}
out.Sort()
initialState.Outs = append(initialState.Outs, out)
}
default:
return errUnknownAssetType
}
}
initialState.Sort(genesisCodec)
asset.States = append(asset.States, initialState)
}
utils.Sort(asset.States)
g.Txs = append(g.Txs, &asset)
}
utils.Sort(g.Txs)
b, err := genesisCodec.Marshal(txs.CodecVersion, &g)
if err != nil {
return fmt.Errorf("problem marshaling genesis: %w", err)
}
reply.Bytes, err = formatting.Encode(args.Encoding, b)
if err != nil {
return fmt.Errorf("couldn't encode genesis as string: %w", err)
}
reply.Encoding = args.Encoding
return nil
}