add support for exited/slashed validators in the genesis state

README.md

@@ -96,6 +96,7 @@ eth-genesis-state-generator beaconchain \
   balance: 32000000000                                     # effective balance
   wd_address: "0x1234567890123456789012345678901234567890" # withdrawal address
   wd_prefix: "0x02"                                        # withdrawal credentials prefix
+  status: 0                                                # validator status: 0=active, 1=slashed, 2=exited
 ```
 
 ## Development

beaconutils/validators.go

@@ -55,9 +55,18 @@ func GetGenesisValidators(cfg *beaconconfig.Config, vals []*validators.Validator
 			WithdrawableEpoch:          phase0.Epoch(cfg.GetUintDefault("FAR_FUTURE_EPOCH", 18446744073709551615)),
 		}
 
-		if effectiveBalance >= maxEffectiveBalance {
+		switch val.Status {
+		case validators.ValidatorStatusActive:
+			if effectiveBalance >= maxEffectiveBalance {
+				validator.ActivationEligibilityEpoch = phase0.Epoch(0)
+				validator.ActivationEpoch = phase0.Epoch(0)
+			}
+		case validators.ValidatorStatusSlashed, validators.ValidatorStatusExited:
+			validator.Slashed = val.Status == validators.ValidatorStatusSlashed
 			validator.ActivationEligibilityEpoch = phase0.Epoch(0)
 			validator.ActivationEpoch = phase0.Epoch(0)
+			validator.ExitEpoch = phase0.Epoch(0)
+			validator.WithdrawableEpoch = phase0.Epoch(0)
 		}
 
 		clValidators = append(clValidators, validator)

validators/mnemonic.go

@@ -60,6 +60,7 @@ func GenerateValidatorsByMnemonic(mnemonicsConfigPath string) ([]*Validator, err
 				data := &Validator{
 					PublicKey:             phase0.BLSPubKey(signingSK.PublicKey().Marshal()),
 					WithdrawalCredentials: make([]byte, 32),
+					Status:                mnemonicSrc.Status,
 				}
 
 				if mnemonicSrc.WdPrefix != "" && mnemonicSrc.WdPrefix != "0x00" && mnemonicSrc.WdAddress != "" {
@@ -143,13 +144,14 @@ func seedFromMnemonic(mnemonic string) (seed []byte, err error) {
 }
 
 type MnemonicSrc struct {
-	Mnemonic  string `yaml:"mnemonic"`
-	Start     uint64 `yaml:"start"`
-	Count     uint64 `yaml:"count"`
-	Balance   uint64 `yaml:"balance"`
-	WdAddress string `yaml:"wd_address"`
-	WdPrefix  string `yaml:"wd_prefix"`
-	WdKeyPath string `yaml:"wd_key_path"`
+	Mnemonic  string          `yaml:"mnemonic"`
+	Start     uint64          `yaml:"start"`
+	Count     uint64          `yaml:"count"`
+	Balance   uint64          `yaml:"balance"`
+	WdAddress string          `yaml:"wd_address"`
+	WdPrefix  string          `yaml:"wd_prefix"`
+	WdKeyPath string          `yaml:"wd_key_path"`
+	Status    ValidatorStatus `yaml:"status"`
 }
 
 func loadMnemonics(srcPath string) ([]MnemonicSrc, error) {

validators/validators.go

@@ -4,8 +4,17 @@ import (
 	"github.com/attestantio/go-eth2-client/spec/phase0"
 )
 
+type ValidatorStatus uint8
+
+const (
+	ValidatorStatusActive ValidatorStatus = iota
+	ValidatorStatusSlashed
+	ValidatorStatusExited
+)
+
 type Validator struct {
 	PublicKey             phase0.BLSPubKey
 	WithdrawalCredentials []byte
 	Balance               *uint64
+	Status                ValidatorStatus
 }