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hlfhelpers.go
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hlfhelpers.go
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package hlf
import (
"context"
"strings"
"sync"
"github.com/anoideaopen/cartridge"
"github.com/anoideaopen/cartridge/manager"
"github.com/hyperledger/fabric-sdk-go/pkg/common/errors/status"
hlfcontext "github.com/hyperledger/fabric-sdk-go/pkg/common/providers/context"
"github.com/hyperledger/fabric-sdk-go/pkg/common/providers/core"
"github.com/hyperledger/fabric-sdk-go/pkg/fabsdk"
"github.com/pkg/errors"
)
type sdkComponents struct {
chProvider hlfcontext.ChannelProvider
}
var (
createSdkLock sync.RWMutex
fabricSDK *fabsdk.FabricSDK
)
func createOrGetSdk(configBackends []core.ConfigBackend, cryptoManager manager.Manager) (*fabsdk.FabricSDK, error) {
createSdkLock.RLock()
if fabricSDK != nil {
createSdkLock.RUnlock()
return fabricSDK, nil
}
createSdkLock.RUnlock()
createSdkLock.Lock()
defer createSdkLock.Unlock()
if fabricSDK != nil {
return fabricSDK, nil
}
var opts []fabsdk.Option
if cryptoManager != nil {
connectOpts, err := cartridge.NewConnector(cryptoManager, cartridge.NewVaultConnectProvider(configBackends...)).Opts()
if err != nil {
return nil, errors.WithStack(err)
}
opts = connectOpts
}
skd, err := fabsdk.New(configBackendsToProvider(configBackends), opts...)
if err != nil {
return nil, errors.WithStack(err)
}
fabricSDK = skd
return fabricSDK, nil
}
func createSdkComponentsWithoutCryptoMng(
_ context.Context,
chName, orgName, userName string,
configBackends []core.ConfigBackend,
) (*sdkComponents, error) {
sdk, err := createOrGetSdk(configBackends, nil)
if err != nil {
return nil, err
}
return &sdkComponents{
chProvider: sdk.ChannelContext(chName, fabsdk.WithUser(userName), fabsdk.WithOrg(orgName)),
}, nil
}
func createSdkComponentsWithCryptoMng(
_ context.Context,
chName, orgName string,
configBackends []core.ConfigBackend,
cryptoManager manager.Manager,
) (*sdkComponents, error) {
sdk, err := createOrGetSdk(configBackends, cryptoManager)
if err != nil {
return nil, err
}
return &sdkComponents{
chProvider: sdk.ChannelContext(chName, fabsdk.WithIdentity(cryptoManager.SigningIdentity()), fabsdk.WithOrg(orgName)),
}, nil
}
func configBackendsToProvider(cb []core.ConfigBackend) func() ([]core.ConfigBackend, error) {
return func() ([]core.ConfigBackend, error) {
return cb, nil
}
}
// IsEndorsementMismatchErr checks if the error is a mismatch.
func IsEndorsementMismatchErr(err error) bool {
if err == nil {
return false
}
s, ok := status.FromError(err)
return ok && status.Code(s.Code) == status.EndorsementMismatch
}
const errReqSizeMarker = "is bigger than request max bytes"
func isOrderingReqSizeExceededErr(err error) bool {
if err == nil {
return false
}
return strings.Contains(err.Error(), errReqSizeMarker)
}