/
query.go
56 lines (54 loc) · 1.43 KB
/
query.go
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package resolvers
import (
"bytes"
"context"
"github.com/hyperledger/fabric-config/protolator"
"github.com/hyperledger/fabric-sdk-go/pkg/client/ledger"
"github.com/hyperledger/fabric-sdk-go/pkg/client/resmgmt"
"github.com/hyperledger/fabric-sdk-go/pkg/fab/resource"
"github.com/hyperledger/fabric-sdk-go/pkg/fabsdk"
"github.com/kfsoftware/hlf-channel-manager/gql/models"
"github.com/pkg/errors"
)
func (r *queryResolver) Channel(ctx context.Context, name string, mspID string, user string) (*models.Channel, error) {
sdkContext := r.FabricSDK.Context(
fabsdk.WithUser(user),
fabsdk.WithOrg(mspID),
)
resClient, err := resmgmt.New(sdkContext)
if err != nil {
return nil, err
}
blck, err := resClient.QueryConfigBlockFromOrderer(name)
if err != nil {
return nil, err
}
cfgBlock, err := resource.ExtractConfigFromBlock(blck)
if err != nil {
return nil, errors.Wrapf(err, "failed to extract config from channel block")
}
var buffer bytes.Buffer
err = protolator.DeepMarshalJSON(&buffer, cfgBlock)
if err != nil {
return nil, err
}
channelProvider := r.FabricSDK.ChannelContext(
name,
fabsdk.WithUser(user),
fabsdk.WithOrg(mspID),
)
ledgerClient, err := ledger.New(channelProvider)
if err != nil {
return nil, err
}
info, err := ledgerClient.QueryInfo()
if err != nil {
return nil, err
}
height := info.BCI.Height
return &models.Channel{
Name: name,
Height: int(height),
Config: buffer.String(),
}, nil
}