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5fe8287fbb
Pointers can be nil and in some cases it's important to always have access to Block or Transaction fields.
80 lines
2.5 KiB
Go
80 lines
2.5 KiB
Go
package result
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import (
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"encoding/json"
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"errors"
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"github.com/nspcc-dev/neo-go/pkg/core/block"
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"github.com/nspcc-dev/neo-go/pkg/core/blockchainer"
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"github.com/nspcc-dev/neo-go/pkg/core/transaction"
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"github.com/nspcc-dev/neo-go/pkg/util"
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)
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// TransactionOutputRaw is used as a wrapper to represents
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// a Transaction.
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type TransactionOutputRaw struct {
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transaction.Transaction
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TransactionMetadata
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}
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// TransactionMetadata is an auxilliary struct for proper TransactionOutputRaw marshaling.
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type TransactionMetadata struct {
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Blockhash util.Uint256 `json:"blockhash,omitempty"`
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Confirmations int `json:"confirmations,omitempty"`
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Timestamp uint64 `json:"blocktime,omitempty"`
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}
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// NewTransactionOutputRaw returns a new ransactionOutputRaw object.
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func NewTransactionOutputRaw(tx *transaction.Transaction, header *block.Header, chain blockchainer.Blockchainer) TransactionOutputRaw {
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// confirmations formula
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confirmations := int(chain.BlockHeight() - header.Base.Index + 1)
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return TransactionOutputRaw{
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Transaction: *tx,
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TransactionMetadata: TransactionMetadata{
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Blockhash: header.Hash(),
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Confirmations: confirmations,
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Timestamp: header.Timestamp,
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},
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}
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}
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// MarshalJSON implements json.Marshaler interface.
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func (t TransactionOutputRaw) MarshalJSON() ([]byte, error) {
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output, err := json.Marshal(TransactionMetadata{
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Blockhash: t.Blockhash,
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Confirmations: t.Confirmations,
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Timestamp: t.Timestamp,
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})
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if err != nil {
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return nil, err
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}
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txBytes, err := json.Marshal(&t.Transaction)
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if err != nil {
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return nil, err
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}
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// We have to keep both transaction.Transaction and tranactionOutputRaw at the same level in json
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// in order to match C# API, so there's no way to marshall Tx correctly with standard json.Marshaller tool.
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if output[len(output)-1] != '}' || txBytes[0] != '{' {
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return nil, errors.New("can't merge internal jsons")
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}
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output[len(output)-1] = ','
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output = append(output, txBytes[1:]...)
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return output, nil
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}
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// UnmarshalJSON implements json.Marshaler interface.
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func (t *TransactionOutputRaw) UnmarshalJSON(data []byte) error {
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// As transaction.Transaction and tranactionOutputRaw are at the same level in json,
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// do unmarshalling separately for both structs.
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output := new(TransactionMetadata)
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err := json.Unmarshal(data, output)
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if err != nil {
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return err
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}
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t.Blockhash = output.Blockhash
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t.Confirmations = output.Confirmations
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t.Timestamp = output.Timestamp
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return json.Unmarshal(data, &t.Transaction)
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}
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