mirror of
https://github.com/hyperledger/fabric-samples.git
synced 2026-06-19 00:15:08 +00:00
f6858cc7e1
- switch to ClientConnInterface - use command type alias for map of commands - add error return to command functions and handle in app.go - inline formatJSON function in getAllAssets.go - replace most panics with error returns - remove error wrapping in listen.go and further down the line - use strconv.ParseUint instead of ParseFloat - use WithCancelCause in transact.go to grab and propagate error from go routine - unmarshal and return []Asset in atb.GetAllAssets - switch to rand package - remove dependency to protobuf reflect package - switch to sync.OnceValues for caching parser - fixed typo in events sample connect.go Signed-off-by: Stanislav Jakuschevskij <stas@two-giants.com>
76 lines
1.4 KiB
Go
76 lines
1.4 KiB
Go
package contract
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import (
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"encoding/json"
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"strconv"
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"github.com/hyperledger/fabric-gateway/pkg/client"
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)
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type AssetTransferBasic struct {
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contract *client.Contract
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}
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func NewAssetTransferBasic(contract *client.Contract) *AssetTransferBasic {
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return &AssetTransferBasic{contract}
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}
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func (atb *AssetTransferBasic) CreateAsset(anAsset Asset) error {
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if _, err := atb.contract.Submit(
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"CreateAsset",
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client.WithArguments(
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anAsset.ID,
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anAsset.Color,
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strconv.FormatUint(anAsset.Size, 10),
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anAsset.Owner,
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strconv.FormatUint(anAsset.AppraisedValue, 10),
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)); err != nil {
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return err
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}
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return nil
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}
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func (atb *AssetTransferBasic) TransferAsset(id, newOwner string) (string, error) {
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result, err := atb.contract.Submit(
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"TransferAsset",
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client.WithArguments(
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id,
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newOwner,
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),
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)
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if err != nil {
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return "", err
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}
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return string(result), nil
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}
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func (atb *AssetTransferBasic) DeleteAsset(id string) error {
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if _, err := atb.contract.Submit(
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"DeleteAsset",
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client.WithArguments(
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id,
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),
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); err != nil {
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return err
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}
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return nil
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}
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func (atb *AssetTransferBasic) GetAllAssets() ([]Asset, error) {
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assetsRaw, err := atb.contract.Evaluate("GetAllAssets")
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if err != nil {
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return nil, err
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}
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if len(assetsRaw) == 0 {
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return []Asset{}, nil
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}
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var assets []Asset
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if err := json.Unmarshal(assetsRaw, &assets); err != nil {
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return nil, err
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}
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return assets, nil
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}
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