neo-go/config/config.go
Roman Khimov 7cf9a40468 network: fix MaxPeers, introduce AttemptConnPeers
Our node didn't respect the MaxPeers setting, fix it with a drop of random
connection when this limit is reached (to give a chance for newcomers to
communicate), but also introduce AttemptConnPeers setting to tune the number
of attempted connections.

This also raises the default MaxPeers for testnet/mainnet to 100, because
neo-go nodes love making friends.
2019-11-06 15:29:58 +03:00

156 lines
5 KiB
Go

package config
import (
"fmt"
"io/ioutil"
"os"
"time"
"github.com/CityOfZion/neo-go/pkg/core/storage"
"github.com/CityOfZion/neo-go/pkg/core/transaction"
"github.com/CityOfZion/neo-go/pkg/network/metrics"
"github.com/CityOfZion/neo-go/pkg/util"
"github.com/go-yaml/yaml"
"github.com/pkg/errors"
)
const (
userAgentFormat = "/NEO-GO:%s/"
// ModeMainNet contains magic code used in the NEO main official network.
ModeMainNet NetMode = 0x00746e41 // 7630401
// ModeTestNet contains magic code used in the NEO testing network.
ModeTestNet NetMode = 0x74746e41 // 1953787457
// ModePrivNet contains magic code usually used for NEO private networks.
ModePrivNet NetMode = 56753 // docker privnet
// ModeUnitTestNet is a stub magic code used for testing purposes.
ModeUnitTestNet NetMode = 0
)
var (
// Version the version of the node, set at build time.
Version string
)
type (
// Config top level struct representing the config
// for the node.
Config struct {
ProtocolConfiguration ProtocolConfiguration `yaml:"ProtocolConfiguration"`
ApplicationConfiguration ApplicationConfiguration `yaml:"ApplicationConfiguration"`
}
// ProtocolConfiguration represents the protocol config.
ProtocolConfiguration struct {
Magic NetMode `yaml:"Magic"`
AddressVersion int64 `yaml:"AddressVersion"`
SecondsPerBlock int `yaml:"SecondsPerBlock"`
LowPriorityThreshold float64 `yaml:"LowPriorityThreshold"`
MaxTransactionsPerBlock int64 `yaml:"MaxTransactionsPerBlock"`
StandbyValidators []string `yaml:"StandbyValidators"`
SeedList []string `yaml:"SeedList"`
SystemFee SystemFee `yaml:"SystemFee"`
// Whether to verify received blocks.
VerifyBlocks bool `yaml:"VerifyBlocks"`
// Whether to verify transactions in received blocks.
VerifyTransactions bool `yaml:"VerifyTransactions"`
}
// SystemFee fees related to system.
SystemFee struct {
EnrollmentTransaction int64 `yaml:"EnrollmentTransaction"`
IssueTransaction int64 `yaml:"IssueTransaction"`
PublishTransaction int64 `yaml:"PublishTransaction"`
RegisterTransaction int64 `yaml:"RegisterTransaction"`
}
// ApplicationConfiguration config specific to the node.
ApplicationConfiguration struct {
DBConfiguration storage.DBConfiguration `yaml:"DBConfiguration"`
NodePort uint16 `yaml:"NodePort"`
Relay bool `yaml:"Relay"`
DialTimeout time.Duration `yaml:"DialTimeout"`
ProtoTickInterval time.Duration `yaml:"ProtoTickInterval"`
MaxPeers int `yaml:"MaxPeers"`
AttemptConnPeers int `yaml:"AttemptConnPeers"`
MinPeers int `yaml:"MinPeers"`
Monitoring metrics.PrometheusConfig `yaml:"Monitoring"`
RPC RPCConfig `yaml:"RPC"`
}
// RPCConfig is an RPC service configuration information (to be moved to the rpc package, see #423).
RPCConfig struct {
Enabled bool `yaml:"Enabled"`
EnableCORSWorkaround bool `yaml:"EnableCORSWorkaround"`
Address string `yaml:"Address"`
Port uint16 `yaml:"Port"`
}
// NetMode describes the mode the blockchain will operate on.
NetMode uint32
)
// String implements the stringer interface.
func (n NetMode) String() string {
switch n {
case ModePrivNet:
return "privnet"
case ModeTestNet:
return "testnet"
case ModeMainNet:
return "mainnet"
case ModeUnitTestNet:
return "unit_testnet"
default:
return "net unknown"
}
}
// GenerateUserAgent creates user agent string based on build time environment.
func (c Config) GenerateUserAgent() string {
return fmt.Sprintf(userAgentFormat, Version)
}
// Load attempts to load the config from the given
// path for the given netMode.
func Load(path string, netMode NetMode) (Config, error) {
configPath := fmt.Sprintf("%s/protocol.%s.yml", path, netMode)
if _, err := os.Stat(configPath); os.IsNotExist(err) {
return Config{}, errors.Wrap(err, "Unable to load config")
}
configData, err := ioutil.ReadFile(configPath)
if err != nil {
return Config{}, errors.Wrap(err, "Unable to read config")
}
config := Config{
ProtocolConfiguration: ProtocolConfiguration{
SystemFee: SystemFee{},
},
ApplicationConfiguration: ApplicationConfiguration{},
}
err = yaml.Unmarshal(configData, &config)
if err != nil {
return Config{}, errors.Wrap(err, "Problem unmarshaling config json data")
}
return config, nil
}
// TryGetValue returns the system fee base on transaction type.
func (s SystemFee) TryGetValue(txType transaction.TXType) util.Fixed8 {
switch txType {
case transaction.EnrollmentType:
return util.Fixed8FromInt64(s.EnrollmentTransaction)
case transaction.IssueType:
return util.Fixed8FromInt64(s.IssueTransaction)
case transaction.PublishType:
return util.Fixed8FromInt64(s.PublishTransaction)
case transaction.RegisterType:
return util.Fixed8FromInt64(s.RegisterTransaction)
default:
return util.Fixed8FromInt64(0)
}
}