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main.go
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main.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package main
import (
_ "net/http/pprof"
"os"
"runtime"
"strings"
"github.com/hyperledger/fabric/common/flogging"
"github.com/hyperledger/fabric/core/config"
"github.com/hyperledger/fabric/msp"
"github.com/hyperledger/fabric/peer/chaincode"
"github.com/hyperledger/fabric/peer/channel"
"github.com/hyperledger/fabric/peer/clilogging"
"github.com/hyperledger/fabric/peer/common"
"github.com/hyperledger/fabric/peer/node"
"github.com/hyperledger/fabric/peer/version"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var logger = flogging.MustGetLogger("main")
var logOutput = os.Stderr
// Constants go here.
const cmdRoot = "core"
// The main command describes the service and
// defaults to printing the help message.
var mainCmd = &cobra.Command{
Use: "peer"}
func main() {
// For environment variables.
viper.SetEnvPrefix(cmdRoot)
viper.AutomaticEnv()
replacer := strings.NewReplacer(".", "_")
viper.SetEnvKeyReplacer(replacer)
// Define command-line flags that are valid for all peer commands and
// subcommands.
mainFlags := mainCmd.PersistentFlags()
mainFlags.String("logging-level", "", "Default logging level and overrides, see core.yaml for full syntax")
viper.BindPFlag("logging_level", mainFlags.Lookup("logging-level"))
mainCmd.AddCommand(version.Cmd())
mainCmd.AddCommand(node.Cmd())
mainCmd.AddCommand(chaincode.Cmd(nil))
mainCmd.AddCommand(clilogging.Cmd(nil))
mainCmd.AddCommand(channel.Cmd(nil))
err := common.InitConfig(cmdRoot)
if err != nil { // Handle errors reading the config file
logger.Errorf("Fatal error when initializing %s config : %s", cmdRoot, err)
os.Exit(1)
}
// setup system-wide logging backend based on settings from core.yaml
flogging.InitBackend(flogging.SetFormat(viper.GetString("logging.format")), logOutput)
// check for --logging-level pflag first, which should override all other
// log settings. if --logging-level is not set, use CORE_LOGGING_LEVEL
// (environment variable takes priority; otherwise, the value set in
// core.yaml)
var loggingSpec string
if viper.GetString("logging_level") != "" {
loggingSpec = viper.GetString("logging_level")
} else {
loggingSpec = viper.GetString("logging.level")
}
flogging.InitFromSpec(loggingSpec)
// Init the MSP
var mspMgrConfigDir = config.GetPath("peer.mspConfigPath")
var mspID = viper.GetString("peer.localMspId")
var mspType = viper.GetString("peer.localMspType")
if mspType == "" {
mspType = msp.ProviderTypeToString(msp.FABRIC)
}
err = common.InitCrypto(mspMgrConfigDir, mspID, mspType)
if err != nil { // Handle errors reading the config file
logger.Errorf("Cannot run peer because %s", err.Error())
os.Exit(1)
}
runtime.GOMAXPROCS(viper.GetInt("peer.gomaxprocs"))
// On failure Cobra prints the usage message and error string, so we only
// need to exit with a non-0 status
if mainCmd.Execute() != nil {
os.Exit(1)
}
}