65 lines
1.5 KiB
Go
65 lines
1.5 KiB
Go
// Package health provides the service readiness use case.
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package health
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import (
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"context"
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"gl/domain/ledger"
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)
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type Database interface {
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Ping(context.Context) error
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}
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type SettlementMonitor interface {
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Stats(context.Context) (ledger.SettlementStats, error)
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}
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type SettlementAuthority interface {
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SettlementAllowed(context.Context) (bool, error)
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}
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type Status struct {
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Serving bool
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DatabaseReady bool
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SettlementEnabled bool
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SettlementReady bool
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SettlementStats ledger.SettlementStats
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}
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type Service struct {
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database Database
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settlement SettlementMonitor
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settlementEnabled bool
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}
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func NewService(database Database, settlement ...SettlementMonitor) *Service {
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service := &Service{database: database}
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if len(settlement) > 0 && settlement[0] != nil {
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service.settlement = settlement[0]
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service.settlementEnabled = true
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}
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return service
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}
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func (s *Service) Check(ctx context.Context) Status {
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status := Status{}
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if s.database != nil {
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status.DatabaseReady = s.database.Ping(ctx) == nil
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}
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status.Serving = status.DatabaseReady
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status.SettlementEnabled = s.settlementEnabled
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if status.DatabaseReady && s.settlementEnabled {
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stats, err := s.settlement.Stats(ctx)
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if err == nil {
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status.SettlementStats = stats
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status.SettlementReady = true
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if authority, ok := s.settlement.(SettlementAuthority); ok {
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allowed, authorityErr := authority.SettlementAllowed(ctx)
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status.SettlementReady = authorityErr == nil && allowed
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}
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}
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}
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return status
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}
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