github.com/leonlxy/hyperledger@v1.0.0-alpha.0.20170427033203-34922035d248/orderer/util.go (about)

     1  /*
     2  Copyright IBM Corp. 2017 All Rights Reserved.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8                   http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package main
    18  
    19  import (
    20  	"io/ioutil"
    21  	"os"
    22  	"path/filepath"
    23  
    24  	"github.com/hyperledger/fabric/common/ledger/blkstorage/fsblkstorage"
    25  	"github.com/hyperledger/fabric/orderer/ledger"
    26  	fileledger "github.com/hyperledger/fabric/orderer/ledger/file"
    27  	jsonledger "github.com/hyperledger/fabric/orderer/ledger/json"
    28  	ramledger "github.com/hyperledger/fabric/orderer/ledger/ram"
    29  	config "github.com/hyperledger/fabric/orderer/localconfig"
    30  	"github.com/hyperledger/fabric/orderer/sbft"
    31  	"github.com/hyperledger/fabric/orderer/sbft/backend"
    32  	sbftcrypto "github.com/hyperledger/fabric/orderer/sbft/crypto"
    33  	"github.com/hyperledger/fabric/orderer/sbft/simplebft"
    34  )
    35  
    36  func createLedgerFactory(conf *config.TopLevel) (ledger.Factory, string) {
    37  	var lf ledger.Factory
    38  	var ld string
    39  	switch conf.General.LedgerType {
    40  	case "file":
    41  		ld = conf.FileLedger.Location
    42  		if ld == "" {
    43  			ld = createTempDir(conf.FileLedger.Prefix)
    44  		}
    45  		logger.Debug("Ledger dir:", ld)
    46  		lf = fileledger.New(ld)
    47  		// The file-based ledger stores the blocks for each channel
    48  		// in a fsblkstorage.ChainsDir sub-directory that we have
    49  		// to create separately. Otherwise the call to the ledger
    50  		// Factory's ChainIDs below will fail (dir won't exist).
    51  		createSubDir(ld, fsblkstorage.ChainsDir)
    52  	case "json":
    53  		ld = conf.FileLedger.Location
    54  		if ld == "" {
    55  			ld = createTempDir(conf.FileLedger.Prefix)
    56  		}
    57  		logger.Debug("Ledger dir:", ld)
    58  		lf = jsonledger.New(ld)
    59  	case "ram":
    60  		fallthrough
    61  	default:
    62  		lf = ramledger.New(int(conf.RAMLedger.HistorySize))
    63  	}
    64  	return lf, ld
    65  }
    66  
    67  func createTempDir(dirPrefix string) string {
    68  	dirPath, err := ioutil.TempDir("", dirPrefix)
    69  	if err != nil {
    70  		logger.Panic("Error creating temp dir:", err)
    71  	}
    72  	return dirPath
    73  }
    74  
    75  func createSubDir(parentDirPath string, subDir string) (string, bool) {
    76  	var created bool
    77  	subDirPath := filepath.Join(parentDirPath, subDir)
    78  	if _, err := os.Stat(subDirPath); err != nil {
    79  		if os.IsNotExist(err) {
    80  			if err = os.Mkdir(subDirPath, 0755); err != nil {
    81  				logger.Panic("Error creating sub dir:", err)
    82  			}
    83  			created = true
    84  		} else {
    85  			logger.Debugf("Found %s sub-dir and using it", fsblkstorage.ChainsDir)
    86  		}
    87  	}
    88  	return subDirPath, created
    89  }
    90  
    91  // XXX The functions below need to be moved to the SBFT package ASAP
    92  
    93  func makeSbftConsensusConfig(conf *config.TopLevel) *sbft.ConsensusConfig {
    94  	cfg := simplebft.Config{N: conf.Genesis.SbftShared.N, F: conf.Genesis.SbftShared.F,
    95  		BatchDurationNsec:  uint64(conf.Genesis.DeprecatedBatchTimeout),
    96  		BatchSizeBytes:     uint64(conf.Genesis.DeprecatedBatchSize),
    97  		RequestTimeoutNsec: conf.Genesis.SbftShared.RequestTimeoutNsec}
    98  	peers := make(map[string][]byte)
    99  	for addr, cert := range conf.Genesis.SbftShared.Peers {
   100  		peers[addr], _ = sbftcrypto.ParseCertPEM(cert)
   101  	}
   102  	return &sbft.ConsensusConfig{Consensus: &cfg, Peers: peers}
   103  }
   104  
   105  func makeSbftStackConfig(conf *config.TopLevel) *backend.StackConfig {
   106  	return &backend.StackConfig{ListenAddr: conf.SbftLocal.PeerCommAddr,
   107  		CertFile: conf.SbftLocal.CertFile,
   108  		KeyFile:  conf.SbftLocal.KeyFile,
   109  		DataDir:  conf.SbftLocal.DataDir}
   110  }