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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| package koios | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| "github.com/cardano-community/koios-go-client/v2" | ||
| "github.com/echovl/cardano-go" | ||
| ) | ||
|
|
||
| type KoiosCli struct { | ||
| *koios.Client | ||
| ctx context.Context | ||
| network cardano.Network | ||
| } | ||
|
|
||
| func NewNode(network cardano.Network, ctx context.Context, opts ...koios.Option) cardano.Node { | ||
| if ctx == nil { | ||
| ctx = context.Background() | ||
| } | ||
| if network == cardano.Testnet { | ||
| opts = append(opts, koios.Host("testnet.koios.rest")) | ||
| } | ||
|
|
||
| c, err := koios.New(opts...) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| return &KoiosCli{Client: c, ctx: ctx, network: network} | ||
| } | ||
|
|
||
| // // utility function to know if continue pagination or not | ||
| // // simply check if the "end of content range" is matching the PageSize | ||
| // func isResponseComplete(res koios.Response) bool { | ||
| // fields := strings.FieldsFunc(res.ContentRange, func(r rune) bool { return r == '-' || r == '/' }) | ||
| // if len(fields) != 3 { | ||
| // return false | ||
| // } | ||
| // if endSide_, err := strconv.ParseUint(fields[1], 10, 16); err == nil { | ||
| // return (uint16(endSide_) % uint16(koios.PageSize)) < uint16(koios.PageSize-1) | ||
| // } | ||
| // return false | ||
| // } | ||
|
|
||
| func (kc *KoiosCli) UTxOs(a cardano.Address) ([]cardano.UTxO, error) { | ||
| utxos := []cardano.UTxO{} | ||
| opts := kc.NewRequestOptions() | ||
| opts.QuerySet("select", "utxo_set") | ||
| res, err := kc.GetAddressInfo(kc.ctx, koios.Address(a.Bech32()), opts) | ||
| if err != nil || res.Data == nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| for _, utxo := range res.Data.UTxOs { | ||
| utxo_ := cardano.UTxO{ | ||
| TxHash: cardano.Hash32(utxo.TxHash), | ||
| Index: uint64(utxo.TxIndex), | ||
| Spender: a, | ||
| Amount: cardano.NewValue( | ||
| cardano.Coin(utxo.Value.IntPart())), | ||
| } | ||
| if len(utxo.AssetList) > 0 { | ||
| ma := utxo_.Amount.MultiAsset | ||
| for _, as := range utxo.AssetList { | ||
| asset := cardano.NewAssets() | ||
| policyId := cardano.NewPolicyIDFromHash( | ||
| cardano.Hash28(as.PolicyID.String())) | ||
| asset.Set(cardano.NewAssetName(string(as.AssetName)), | ||
| cardano.BigNum(as.Quantity.IntPart())) | ||
| ma.Set(policyId, asset) | ||
| } | ||
| } | ||
| utxos = append(utxos, utxo_) | ||
| } | ||
| return utxos, nil | ||
| } | ||
|
|
||
| // Tip returns the node's current tip | ||
| func (kc *KoiosCli) Tip() (*cardano.NodeTip, error) { | ||
| opts := kc.NewRequestOptions() | ||
| opts.QuerySet("select", "block_no,epoch_no,abs_slot") | ||
| res, err := kc.GetTip(kc.ctx, opts) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return &cardano.NodeTip{ | ||
| Epoch: uint64(res.Data.EpochNo), | ||
| Block: uint64(res.Data.BlockNo), | ||
| Slot: uint64(res.Data.AbsSlot), | ||
| }, nil | ||
| } | ||
|
|
||
| // SubmitTx submits a transaction to the node using cbor encoding | ||
| func (kc *KoiosCli) SubmitTx(*cardano.Tx) (*cardano.Hash32, error) { | ||
| return nil, nil | ||
| } | ||
|
|
||
| // ProtocolParams returns the Node's Protocol Parameters | ||
| func (kc *KoiosCli) ProtocolParams() (*cardano.ProtocolParams, error) { | ||
| opts := kc.NewRequestOptions() | ||
| opts.QuerySet("limit", "1") | ||
| res, err := kc.GetEpochParams(kc.ctx, nil, opts) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| ep := res.Data[0] | ||
| return &cardano.ProtocolParams{ | ||
| MinFeeA: cardano.Coin(ep.MinFeeA.IntPart()), | ||
| MinFeeB: cardano.Coin(ep.MinFeeB.IntPart()), | ||
| MaxBlockBodySize: uint(ep.MaxBlockSize), | ||
| MaxTxSize: uint(ep.MaxTxSize), | ||
| // ... | ||
| }, nil | ||
|
|
||
| } | ||
|
|
||
| // Network returns the node's current network type | ||
| func (kc *KoiosCli) Network() cardano.Network { | ||
| return kc.network | ||
| } |