contractor: address comments

api/autopilot.go

@@ -138,19 +138,10 @@ func (c AutopilotConfig) Validate() error {
 	return nil
 }
 
-func (c ContractsConfig) IsContractInSet(contract Contract) bool {
-	for _, set := range contract.ContractSets {
-		if set == c.Set {
-			return true
-		}
-	}
-	return false
-}
-
 func (c ContractsConfig) SortContractsForMaintenance(contracts []Contract) {
 	sort.SliceStable(contracts, func(i, j int) bool {
-		iInSet := c.IsContractInSet(contracts[i])
-		jInSet := c.IsContractInSet(contracts[j])
+		iInSet := contracts[i].InSet(c.Set)
+		jInSet := contracts[j].InSet(c.Set)
 		if iInSet != jInSet {
 			return iInSet
 		}

autopilot/contractor/alerts.go

@@ -33,7 +33,7 @@ func newContractRenewalFailedAlert(contract api.ContractMetadata, ourFault bool,
 		Message:  "Contract renewal failed",
 		Data: map[string]interface{}{
 			"error":      err.Error(),
-			"ourFault":   ourFault,
+			"hostError":  !ourFault,
 			"contractID": contract.ID.String(),
 			"hostKey":    contract.HostKey.String(),
 		},

autopilot/contractor/contract_spending.go

@@ -1,6 +1,8 @@
 package contractor
 
 import (
+	"context"
+
 	"go.sia.tech/core/types"
 	"go.sia.tech/renterd/api"
 )
@@ -27,7 +29,12 @@ func currentPeriodSpending(contracts []api.ContractMetadata, currentPeriod uint6
 	return totalAllocated
 }
 
-func remainingFunds(contracts []api.ContractMetadata, state *MaintenanceState) types.Currency {
+func remainingAllowance(ctx context.Context, bus Bus, state *MaintenanceState) (types.Currency, error) {
+	contracts, err := bus.Contracts(ctx, api.ContractsOpts{})
+	if err != nil {
+		return types.Currency{}, err
+	}
+
 	// find out how much we spent in the current period
 	spent := currentPeriodSpending(contracts, state.Period())
 
@@ -36,5 +43,5 @@ func remainingFunds(contracts []api.ContractMetadata, state *MaintenanceState) t
 	if state.Allowance().Cmp(spent) > 0 {
 		remaining = state.Allowance().Sub(spent)
 	}
-	return remaining
+	return remaining, nil
 }

autopilot/contractor/hostfilter.go

@@ -102,7 +102,7 @@ func (u *unusableHostsBreakdown) keysAndValues() []interface{} {
 // - recoverable -> can be usable in the contract set if it is refreshed/renewed
 // - refresh -> should be refreshed
 // - renew -> should be renewed
-func (c *Contractor) isUsableContract(cfg api.AutopilotConfig, s rhpv2.HostSettings, pt rhpv3.HostPriceTable, rs api.RedundancySettings, contract api.Contract, inSet bool, bh uint64, f *ipFilter) (usable, refresh, renew bool, reasons []string) {
+func (c *Contractor) isUsableContract(cfg api.AutopilotConfig, s rhpv2.HostSettings, pt rhpv3.HostPriceTable, rs api.RedundancySettings, contract api.Contract, inSet bool, bh uint64, f *hostSet) (usable, refresh, renew bool, reasons []string) {
 	usable = true
 	if bh > contract.EndHeight() {
 		reasons = append(reasons, errContractExpired.Error())

autopilot/contractor/ipfilter.go → autopilot/contractor/hostset.go

@@ -12,27 +12,27 @@ var (
 )
 
 type (
-	ipFilter struct {
+	hostSet struct {
 		subnetToHostKey map[string]string
 
 		logger *zap.SugaredLogger
 	}
 )
 
-func (f *ipFilter) HasRedundantIP(host api.Host) bool {
+func (hs *hostSet) HasRedundantIP(host api.Host) bool {
 	// validate host subnets
 	if len(host.Subnets) == 0 {
-		f.logger.Errorf("host %v has no subnet, treating its IP %v as redundant", host.PublicKey, host.NetAddress)
+		hs.logger.Errorf("host %v has no subnet, treating its IP %v as redundant", host.PublicKey, host.NetAddress)
 		return true
 	} else if len(host.Subnets) > 2 {
-		f.logger.Errorf("host %v has more than 2 subnets, treating its IP %v as redundant", host.PublicKey, errHostTooManySubnets)
+		hs.logger.Errorf("host %v has more than 2 subnets, treating its IP %v as redundant", host.PublicKey, errHostTooManySubnets)
 		return true
 	}
 
 	// check if we know about this subnet
 	var knownHost string
 	for _, subnet := range host.Subnets {
-		if knownHost = f.subnetToHostKey[subnet]; knownHost != "" {
+		if knownHost = hs.subnetToHostKey[subnet]; knownHost != "" {
 			break
 		}
 	}
@@ -44,8 +44,8 @@ func (f *ipFilter) HasRedundantIP(host api.Host) bool {
 	return false
 }
 
-func (f *ipFilter) Add(host api.Host) {
+func (hs *hostSet) Add(host api.Host) {
 	for _, subnet := range host.Subnets {
-		f.subnetToHostKey[subnet] = host.PublicKey.String()
+		hs.subnetToHostKey[subnet] = host.PublicKey.String()
 	}
 }

autopilot/contractor/state.go

@@ -107,8 +107,8 @@ func (ctx *mCtx) WantedContracts() uint64 {
 	return ctx.state.AP.Config.Contracts.Amount
 }
 
-func (ctx *mCtx) IsContractInSet(contract api.Contract) bool {
-	return ctx.state.ContractsConfig().IsContractInSet(contract)
+func (ctx *mCtx) Set() string {
+	return ctx.state.ContractsConfig().Set
 }
 
 func (ctx *mCtx) SortContractsForMaintenance(contracts []api.Contract) {