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factory.go
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factory.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package factory
import (
"sync"
"github.com/Yunpeng-J/HLF-2.2/bccsp"
"github.com/Yunpeng-J/HLF-2.2/common/flogging"
"github.com/pkg/errors"
)
var (
defaultBCCSP bccsp.BCCSP // default BCCSP
factoriesInitOnce sync.Once // factories' Sync on Initialization
factoriesInitError error // Factories' Initialization Error
// when InitFactories has not been called yet (should only happen
// in test cases), use this BCCSP temporarily
bootBCCSP bccsp.BCCSP
bootBCCSPInitOnce sync.Once
logger = flogging.MustGetLogger("bccsp")
)
// BCCSPFactory is used to get instances of the BCCSP interface.
// A Factory has name used to address it.
type BCCSPFactory interface {
// Name returns the name of this factory
Name() string
// Get returns an instance of BCCSP using opts.
Get(opts *FactoryOpts) (bccsp.BCCSP, error)
}
// GetDefault returns a non-ephemeral (long-term) BCCSP
func GetDefault() bccsp.BCCSP {
if defaultBCCSP == nil {
logger.Debug("Before using BCCSP, please call InitFactories(). Falling back to bootBCCSP.")
bootBCCSPInitOnce.Do(func() {
var err error
bootBCCSP, err = (&SWFactory{}).Get(GetDefaultOpts())
if err != nil {
panic("BCCSP Internal error, failed initialization with GetDefaultOpts!")
}
})
return bootBCCSP
}
return defaultBCCSP
}
func initBCCSP(f BCCSPFactory, config *FactoryOpts) (bccsp.BCCSP, error) {
csp, err := f.Get(config)
if err != nil {
return nil, errors.Errorf("Could not initialize BCCSP %s [%s]", f.Name(), err)
}
return csp, nil
}