Change healthchecker to return error

honeypot/ssh/store/cache.go

@@ -109,6 +109,6 @@ func (s *CachingStore) Query(query AttemptQuery) ([]models.LoginAttempt, error)
 	return attempts, err
 }
 
-func (s *CachingStore) IsHealthy() bool {
+func (s *CachingStore) IsHealthy() error {
 	return s.backend.IsHealthy()
 }

honeypot/ssh/store/memory.go

@@ -142,8 +142,8 @@ func (ms *MemoryStore) Query(query AttemptQuery) ([]models.LoginAttempt, error)
 	return results, nil
 }
 
-func (s *MemoryStore) IsHealthy() bool {
-	return true
+func (s *MemoryStore) IsHealthy() error {
+	return nil
 }
 
 func toResults(m map[string]int) []StatsResult {

honeypot/ssh/store/metrics.go

@@ -121,6 +121,6 @@ func (s *MetricsCollectingStore) Query(query AttemptQuery) ([]models.LoginAttemp
 	return s.store.Query(query)
 }
 
-func (s *MetricsCollectingStore) IsHealthy() bool {
-	return s.IsHealthy()
+func (s *MetricsCollectingStore) IsHealthy() error {
+	return s.store.IsHealthy()
 }

honeypot/ssh/store/postgres.go

@@ -126,8 +126,11 @@ func (s *PostgresStore) Stats(statType LoginStats, limit int) ([]StatsResult, er
 	return results, nil
 }
 
-func (s *PostgresStore) IsHealthy() bool {
-	return s.db.Ping() == nil
+func (s *PostgresStore) IsHealthy() error {
+	if err := s.db.Ping(); err != nil {
+		return ErrStoreUnhealthy
+	}
+	return nil
 }
 
 func (s *PostgresStore) statsTotal(limit int) ([]StatsResult, error) {

honeypot/ssh/store/store.go

@@ -1,6 +1,12 @@
 package store
 
-import "github.uio.no/torjus/apiary/models"
+import (
+	"errors"
+
+	"github.uio.no/torjus/apiary/models"
+)
+
+var ErrStoreUnhealthy = errors.New("store is unhealthy")
 
 type LoginStats string
 
@@ -39,5 +45,5 @@ type LoginAttemptStore interface {
 }
 
 type HealthCheker interface {
-	IsHealthy() bool
+	IsHealthy() error
 }