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utils.go
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utils.go
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package guard
import (
"bytes"
"fmt"
"sort"
"github.com/celer-network/goutils/eth"
"github.com/celer-network/sgn/mainchain"
"github.com/celer-network/sgn/proto/chain"
"github.com/celer-network/sgn/proto/entity"
sdk "github.com/cosmos/cosmos-sdk/types"
)
func VerifySimplexStateSigs(signedSimplexState *chain.SignedSimplexState, simplexSender, simplexReceiver mainchain.Addr) error {
if len(signedSimplexState.Sigs) != 2 {
return fmt.Errorf("incorrect sigs count %d", len(signedSimplexState.Sigs))
}
var addrs []mainchain.Addr
if bytes.Compare(simplexSender.Bytes(), simplexReceiver.Bytes()) < 0 {
addrs = []mainchain.Addr{simplexSender, simplexReceiver}
} else {
addrs = []mainchain.Addr{simplexReceiver, simplexSender}
}
for i := 0; i < 2; i++ {
addr, err := eth.RecoverSigner(signedSimplexState.SimplexState, signedSimplexState.Sigs[i])
if err != nil {
return fmt.Errorf("RecoverSigner err: %s", err)
}
if addrs[i] != addr {
return fmt.Errorf("invalid eth signer %d %x %x", i, addrs[i], addr)
}
}
return nil
}
func AssignGuards(ctx sdk.Context, keeper Keeper) []sdk.AccAddress {
validatorCandidates := keeper.validatorKeeper.GetValidatorCandidates(ctx)
sort.Slice(validatorCandidates, func(i, j int) bool {
validatorCandidate0 := validatorCandidates[i]
validatorCandidate1 := validatorCandidates[j]
stakeReqRatio0 := validatorCandidate0.StakingPool.Quo(validatorCandidate0.RequestCount.AddRaw(1))
stakeReqRatio1 := validatorCandidate1.StakingPool.Quo(validatorCandidate1.RequestCount.AddRaw(1))
if !stakeReqRatio0.Equal(stakeReqRatio1) {
return stakeReqRatio0.GT(stakeReqRatio1)
}
return validatorCandidate0.StakingPool.GT(validatorCandidate1.StakingPool)
})
requestGuardCount := int(keeper.RequestGuardCount(ctx))
assignedGuards := []sdk.AccAddress{}
for len(assignedGuards) < requestGuardCount && len(assignedGuards) < len(validatorCandidates) {
candidate := validatorCandidates[len(assignedGuards)]
candidate.RequestCount = candidate.RequestCount.AddRaw(1)
keeper.validatorKeeper.SetCandidate(ctx, candidate)
assignedGuards = append(assignedGuards, candidate.ValAccount)
}
return assignedGuards
}
func PrintSimplexChannel(simplex *entity.SimplexPaymentChannel) string {
return fmt.Sprintf("cid: %x, from: %x, seq: %d", simplex.GetChannelId(), simplex.GetPeerFrom(), simplex.GetSeqNum())
}