Change store All to use channel

honeypot/ssh/store/cache.go

@@ -2,6 +2,8 @@ package store
 
 import "git.t-juice.club/torjus/apiary/models"
 
+var _ LoginAttemptStore = &CachingStore{}
+
 type CachingStore struct {
 	backend LoginAttemptStore
 
@@ -33,14 +35,16 @@ func NewCachingStore(backend LoginAttemptStore) *CachingStore {
 		//TODO: Handle better maybe?
 		panic(err)
 	}
+	var loginCount int
 
-	cs.totalLoginsCount = len(all)
-	for _, attempt := range all {
+	for attempt := range all {
 		cs.uniqueUsernames[attempt.Username] = struct{}{}
 		cs.uniquePasswords[attempt.Password] = struct{}{}
 		cs.uniqueIPs[attempt.RemoteIP.String()] = struct{}{}
 		cs.uniqueCountries[attempt.Country] = struct{}{}
+		loginCount++
 	}
+	cs.totalLoginsCount = loginCount
 
 	return cs
 }
@@ -58,7 +62,7 @@ func (s *CachingStore) AddAttempt(l *models.LoginAttempt) error {
 	return s.backend.AddAttempt(l)
 }
 
-func (s *CachingStore) All() ([]models.LoginAttempt, error) {
+func (s *CachingStore) All() (<-chan models.LoginAttempt, error) {
 	return s.backend.All()
 }
 

honeypot/ssh/store/memory.go

@@ -9,6 +9,8 @@ import (
 	"git.t-juice.club/torjus/apiary/models"
 )
 
+var _ LoginAttemptStore = &MemoryStore{}
+
 type MemoryStore struct {
 	lock      sync.RWMutex
 	attempts  []models.LoginAttempt
@@ -32,8 +34,17 @@ func (ms *MemoryStore) AddAttempt(l *models.LoginAttempt) error {
 	return nil
 }
 
-func (ms *MemoryStore) All() ([]models.LoginAttempt, error) {
-	return ms.attempts, nil
+func (ms *MemoryStore) All() (<-chan models.LoginAttempt, error) {
+	ch := make(chan models.LoginAttempt)
+	go func() {
+		ms.lock.RLock()
+		defer ms.lock.RUnlock()
+		for _, attempt := range ms.attempts {
+			ch <- attempt
+		}
+		close(ch)
+	}()
+	return ch, nil
 }
 
 func (ms *MemoryStore) Stats(statType LoginStats, limit int) ([]StatsResult, error) {

honeypot/ssh/store/metrics.go

@@ -8,6 +8,8 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 )
 
+var _ LoginAttemptStore = &MetricsCollectingStore{}
+
 const tickDuration = 5 * time.Second
 
 type MetricsCollectingStore struct {
@@ -89,7 +91,7 @@ func (s *MetricsCollectingStore) AddAttempt(l *models.LoginAttempt) error {
 	return err
 }
 
-func (s *MetricsCollectingStore) All() ([]models.LoginAttempt, error) {
+func (s *MetricsCollectingStore) All() (<-chan models.LoginAttempt, error) {
 	return s.store.All()
 }
 

honeypot/ssh/store/postgres.go

@@ -9,6 +9,8 @@ import (
 	_ "github.com/jackc/pgx/v4/stdlib"
 )
 
+var _ LoginAttemptStore = &PostgresStore{}
+
 const DBSchema = `
 CREATE TABLE IF NOT EXISTS login_attempts(
 	id serial PRIMARY KEY,
@@ -61,27 +63,30 @@ RETURNING id;`
 	return tx.Commit()
 }
 
-func (s *PostgresStore) All() ([]models.LoginAttempt, error) {
+func (s *PostgresStore) All() (<-chan models.LoginAttempt, error) {
 	stmt := `SELECT date, remote_ip, username, password, client_version, connection_uuid, country FROM login_attempts`
 
 	rows, err := s.db.Query(stmt)
 	if err != nil {
 		return nil, err
 	}
-	defer rows.Close()
 
-	var attempts []models.LoginAttempt
+	ch := make(chan models.LoginAttempt)
+	go func() {
+		defer rows.Close()
 		for rows.Next() {
 			var a models.LoginAttempt
 			var ip string
 			if err := rows.Scan(&a.Date, &ip, &a.Username, &a.Password, &a.SSHClientVersion, &a.SSHClientVersion, &a.Country); err != nil {
-			return nil, err
+				panic(err)
 			}
 			a.RemoteIP = net.ParseIP(ip)
-		attempts = append(attempts, a)
+			ch <- a
 		}
+		close(ch)
+	}()
 
-	return attempts, nil
+	return ch, nil
 }
 
 func (s *PostgresStore) Stats(statType LoginStats, limit int) ([]StatsResult, error) {

honeypot/ssh/store/store.go

@@ -38,7 +38,7 @@ type AttemptQuery struct {
 }
 type LoginAttemptStore interface {
 	AddAttempt(l *models.LoginAttempt) error
-	All() ([]models.LoginAttempt, error)
+	All() (<-chan models.LoginAttempt, error)
 	Stats(statType LoginStats, limit int) ([]StatsResult, error)
 	Query(query AttemptQuery) ([]models.LoginAttempt, error)
 	HealthCheker

honeypot/ssh/store/store_test.go

@@ -25,8 +25,12 @@ func testLoginAttemptStore(s store.LoginAttemptStore, t *testing.T) {
 		if err != nil {
 			t.Fatalf("Error getting all attempts: %s", err)
 		}
-		if len(all) != len(testAttempts) {
-			t.Errorf("All returned wrong amount. Got %d want %d", len(all), len(testAttempts))
+		var count int
+		for range all {
+			count++
+		}
+		if count != len(testAttempts) {
+			t.Errorf("All returned wrong amount. Got %d want %d", count, len(testAttempts))
 		}
 		stats, err := s.Stats(store.LoginStatsTotals, 1)
 		if err != nil {
@@ -229,7 +233,11 @@ func benchmarkLoginAttemptStore(setupFunc func() store.LoginAttemptStore, b *tes
 			if err != nil {
 				b.Fatalf("Error fetchin all: %s", err)
 			}
-			_ = len(all)
+			var count int
+			for range all {
+				count++
+			}
+			_ = count
 		}
 	})
 }