Small changes (less GC, cache stats, linter fixes)

.golangci.yml

@@ -29,6 +29,7 @@ linters:
     - bidichk
     - containedctx
     - contextcheck
+    - gosec
 linters-settings:
   gosimple:
     go: "1.17"

activityPubSending.go

@@ -23,7 +23,7 @@ type apRequest struct {
 }
 
 func (a *goBlog) initAPSendQueue() {
-	a.listenOnQueue("ap", 15*time.Second, func(qi *queueItem, dequeue func(), reschedule func(time.Duration)) {
+	a.listenOnQueue("ap", time.Minute, func(qi *queueItem, dequeue func(), reschedule func(time.Duration)) {
 		var r apRequest
 		if err := gob.NewDecoder(bytes.NewReader(qi.content)).Decode(&r); err != nil {
 			log.Println("activitypub queue:", err.Error())

cache.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"crypto/sha256"
 	"fmt"
+	"log"
 	"net/http"
 	"net/url"
 	"sort"
@@ -38,7 +39,15 @@ func (a *goBlog) initCache() (err error) {
 		NumCounters: 40 * 1000,        // 4000 items when full with 5 KB items -> x10 = 40.000
 		MaxCost:     20 * 1000 * 1000, // 20 MB
 		BufferItems: 64,               // recommended
+		Metrics:     true,
 	})
+	go func() {
+		ticker := time.NewTicker(15 * time.Minute)
+		for range ticker.C {
+			met := a.cache.c.Metrics
+			log.Println("\nCache:", met.String())
+		}
+	}()
 	return
 }
 

check.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"context"
-	"crypto/tls"
 	"fmt"
 	"io"
 	"log"
@@ -51,9 +50,6 @@ func (a *goBlog) checkLinks(w io.Writer, posts ...*post) error {
 	client := &http.Client{
 		Timeout: 30 * time.Second,
 		Transport: gzhttp.Transport(&http.Transport{
-			TLSClientConfig: &tls.Config{
-				InsecureSkipVerify: true,
-			},
 			// Limits
 			DisableKeepAlives: true,
 			MaxConnsPerHost:   1,

database.go

@@ -210,26 +210,33 @@ func (db *database) execContext(c context.Context, query string, args ...interfa
 }
 
 func (db *database) query(query string, args ...interface{}) (*sql.Rows, error) {
+	return db.queryContext(context.Background(), query, args...)
+}
+
+func (db *database) queryContext(c context.Context, query string, args ...interface{}) (rows *sql.Rows, err error) {
 	if db == nil || db.db == nil {
 		return nil, errors.New("database not initialized")
 	}
 	// Maybe prepare
 	st, args, _ := db.prepare(query, args...)
 	// Prepare context, call hook
-	ctx := db.dbBefore(context.Background(), query, args...)
-	defer db.dbAfter(ctx, query, args...)
+	ctx := db.dbBefore(c, query, args...)
 	// Query
 	if st != nil {
-		return st.QueryContext(ctx, args...)
+		rows, err = st.QueryContext(ctx, args...)
+	} else {
+		rows, err = db.db.QueryContext(ctx, query, args...)
 	}
-	return db.db.QueryContext(ctx, query, args...)
+	// Call hook
+	db.dbAfter(ctx, query, args...)
+	return
 }
 
 func (db *database) queryRow(query string, args ...interface{}) (*sql.Row, error) {
 	return db.queryRowContext(context.Background(), query, args...)
 }
 
-func (db *database) queryRowContext(c context.Context, query string, args ...interface{}) (*sql.Row, error) {
+func (db *database) queryRowContext(c context.Context, query string, args ...interface{}) (row *sql.Row, err error) {
 	if db == nil || db.db == nil {
 		return nil, errors.New("database not initialized")
 	}
@@ -237,12 +244,15 @@ func (db *database) queryRowContext(c context.Context, query string, args ...int
 	st, args, _ := db.prepare(query, args...)
 	// Prepare context, call hook
 	ctx := db.dbBefore(c, query, args...)
-	defer db.dbAfter(ctx, query, args...)
 	// Query
 	if st != nil {
-		return st.QueryRowContext(ctx, args...), nil
+		row = st.QueryRowContext(ctx, args...)
+	} else {
+		row = db.db.QueryRowContext(ctx, query, args...)
 	}
-	return db.db.QueryRowContext(ctx, query, args...), nil
+	// Call hook
+	db.dbAfter(ctx, query, args...)
+	return
 }
 
 // Other things

export.go

@@ -17,6 +17,7 @@ func (a *goBlog) exportMarkdownFiles(dir string) error {
 		filename := filepath.Join(dir, p.Path+".md")
 		filedir := filepath.Dir(filename)
 		_ = os.MkdirAll(filedir, 0777)
+		//nolint:gosec
 		err = os.WriteFile(filename, []byte(p.contentWithParams()), 0666)
 		if err != nil {
 			return err

garbagecollector.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"log"
 	"runtime"
 	"time"
@@ -8,9 +9,9 @@ import (
 
 func initGC() {
 	go func() {
-		ticker := time.NewTicker(10 * time.Minute)
+		ticker := time.NewTicker(15 * time.Minute)
 		for range ticker.C {
-			go doGC()
+			doGC()
 		}
 	}()
 }
@@ -20,5 +21,10 @@ func doGC() {
 	runtime.ReadMemStats(&old)
 	runtime.GC()
 	runtime.ReadMemStats(&new)
-	log.Printf("Alloc: %v MiB → %v MiB", old.Alloc/1024/1024, new.Alloc/1024/1024)
+	log.Println(fmt.Sprintf(
+		"\nAlloc: %d MiB -> %d MiB\nSys: %d MiB -> %d MiB\nNumGC: %d",
+		old.Alloc/1024/1024, new.Alloc/1024/1024,
+		old.Sys/1024/1024, new.Sys/1024/1024,
+		new.NumGC,
+	))
 }

httpListener.go

@@ -41,6 +41,7 @@ func (a *goBlog) getTCPListener(s *http.Server) (net.Listener, error) {
 		}
 		return tls.NewListener(ln, &tls.Config{
 			GetCertificate: tailscale.GetCertificate,
+			MinVersion:     tls.VersionTLS12,
 		}), nil
 	} else {
 		// Default

queue_test.go

@@ -22,10 +22,12 @@ func Test_queue(t *testing.T) {
 	defer app.db.close()
 	db := app.db
 
+	time1 := time.Now()
+
 	err := db.enqueue("test", []byte(""), time.Now())
 	require.Error(t, err)
 
-	err = db.enqueue("test", []byte("1"), time.Now())
+	err = db.enqueue("test", []byte("1"), time1)
 	require.NoError(t, err)
 
 	err = db.enqueue("test", []byte("2"), time.Now())
@@ -39,6 +41,7 @@ func Test_queue(t *testing.T) {
 	require.NoError(t, err)
 	require.NotNil(t, qi)
 	require.Equal(t, []byte("1"), qi.content)
+	require.Equal(t, time1.UTC(), qi.schedule.UTC())
 
 	err = db.reschedule(qi, 1*time.Second)
 	require.NoError(t, err)
@@ -63,3 +66,31 @@ func Test_queue(t *testing.T) {
 	require.Equal(t, []byte("1"), qi.content)
 
 }
+
+func Benchmark_queue(b *testing.B) {
+	app := &goBlog{
+		cfg: &config{
+			Db: &configDb{
+				File: filepath.Join(b.TempDir(), "test.db"),
+			},
+		},
+	}
+	_ = app.initDatabase(false)
+	defer app.db.close()
+	db := app.db
+
+	err := db.enqueue("test", []byte("1"), time.Now())
+	require.NoError(b, err)
+
+	b.Run("Peek with item", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			_, _ = db.peekQueue(context.Background(), "test")
+		}
+	})
+
+	b.Run("Peek without item", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			_, _ = db.peekQueue(context.Background(), "abc")
+		}
+	})
+}

tailscale.go

@@ -49,6 +49,7 @@ func (a *goBlog) getTailscaleListener(addr string) (net.Listener, error) {
 	if addr == ":443" && a.cfg.Server.TailscaleHTTPS {
 		ln = tls.NewListener(ln, &tls.Config{
 			GetCertificate: tailscale.GetCertificate,
+			MinVersion:     tls.VersionTLS12,
 		})
 	}
 	return ln, nil

tor.go

@@ -41,7 +41,7 @@ func (a *goBlog) startOnionService(h http.Handler) error {
 			return err
 		}
 		pemEncoded := pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: x509Encoded})
-		_ = os.WriteFile(torKeyPath, pemEncoded, 0666)
+		_ = os.WriteFile(torKeyPath, pemEncoded, 0600)
 	} else {
 		d, _ := os.ReadFile(torKeyPath)
 		block, _ := pem.Decode(d)

webmentionVerification.go

@@ -21,7 +21,7 @@ import (
 )
 
 func (a *goBlog) initWebmentionQueue() {
-	a.listenOnQueue("wm", 15*time.Second, func(qi *queueItem, dequeue func(), reschedule func(time.Duration)) {
+	a.listenOnQueue("wm", time.Minute, func(qi *queueItem, dequeue func(), reschedule func(time.Duration)) {
 		var m mention
 		if err := gob.NewDecoder(bytes.NewReader(qi.content)).Decode(&m); err != nil {
 			log.Println("webmention queue:", err.Error())