/
abci.go
89 lines (71 loc) · 3.02 KB
/
abci.go
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package nexus
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/axelarnetwork/axelar-core/utils"
"github.com/axelarnetwork/axelar-core/x/nexus/types"
)
// BeginBlocker check for infraction evidence or downtime of validators
// on every begin block
func BeginBlocker(_ sdk.Context, _ abci.RequestBeginBlock, _ types.Nexus) {}
// EndBlocker called every block
func EndBlocker(ctx sdk.Context, _ abci.RequestEndBlock, n types.Nexus, r types.RewardKeeper, s types.Snapshotter) ([]abci.ValidatorUpdate, error) {
if err := checkChainMaintainers(ctx, n, r, s); err != nil {
return nil, err
}
routeQueuedMessages(ctx, n)
return nil, nil
}
// checkChainMaintainers checks the chain maintainers of all activated chains
// - if a chain maintainer has missed voting for too many polls, then it will be de-registered
// - if a chain maintainer has voted incorrectly for too many polls, then it will be de-registered
// - if a chain maintainer does not active proxy set, then it will be de-registered
func checkChainMaintainers(ctx sdk.Context, n types.Nexus, r types.RewardKeeper, s types.Snapshotter) error {
for _, chain := range n.GetChains(ctx) {
if !n.IsChainActivated(ctx, chain) {
continue
}
rewardPool := r.GetPool(ctx, chain.Name.String())
params := n.GetParams(ctx)
window := int(params.ChainMaintainerCheckWindow)
for _, maintainerState := range n.GetChainMaintainerStates(ctx, chain) {
missingVoteCount := maintainerState.CountMissingVotes(window)
incorrectVoteCount := maintainerState.CountIncorrectVotes(window)
_, hasProxyActive := s.GetProxy(ctx, maintainerState.GetAddress())
if hasProxyActive &&
utils.NewThreshold(int64(missingVoteCount), int64(window)).LTE(params.ChainMaintainerMissingVoteThreshold) &&
utils.NewThreshold(int64(incorrectVoteCount), int64(window)).LTE(params.ChainMaintainerIncorrectVoteThreshold) {
continue
}
rewardPool.ClearRewards(maintainerState.GetAddress())
if err := n.RemoveChainMaintainer(ctx, chain, maintainerState.GetAddress()); err != nil {
return err
}
ctx.EventManager().EmitEvent(
sdk.NewEvent(
types.EventTypeChainMaintainer,
sdk.NewAttribute(sdk.AttributeKeyModule, types.ModuleName),
sdk.NewAttribute(sdk.AttributeKeyAction, types.AttributeValueDeregister),
sdk.NewAttribute(types.AttributeKeyChain, chain.Name.String()),
sdk.NewAttribute(types.AttributeKeyChainMaintainerAddress, maintainerState.GetAddress().String()),
),
)
n.Logger(ctx).Info(fmt.Sprintf("deregistered validator %s as maintainer for chain %s", maintainerState.GetAddress().String(), chain.Name))
}
}
return nil
}
func routeQueuedMessages(ctx sdk.Context, n types.Nexus) {
params := n.GetParams(ctx)
for i := uint64(0); i < params.EndBlockerLimit; i++ {
msg, ok := n.DequeueRouteMessage(ctx)
if !ok {
break
}
// try routing the message
_ = utils.RunCached(ctx, n, func(ctx sdk.Context) (struct{}, error) {
return struct{}{}, n.RouteMessage(ctx, msg.ID)
})
}
}