Global ConfigLog.

config.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"strconv"
+	"sync/atomic"
 
 	"github.com/tetratelabs/wazero/api"
 
@@ -48,6 +49,15 @@ func (c *Conn) Config(op DBConfig, arg ...bool) (bool, error) {
 	return util.ReadBool(c.mod, argsPtr), c.error(rc)
 }
 
+var defaultLogger atomic.Pointer[func(code ExtendedErrorCode, msg string)]
+
+// ConfigLog sets up the default error logging callback for new connections.
+//
+// https://sqlite.org/errlog.html
+func ConfigLog(cb func(code ExtendedErrorCode, msg string)) {
+	defaultLogger.Store(&cb)
+}
+
 // ConfigLog sets up the error logging callback for the connection.
 //
 // https://sqlite.org/errlog.html

conn.go

@@ -92,6 +92,9 @@ func newConn(ctx context.Context, filename string, flags OpenFlag) (ret *Conn, _
 	}()
 
 	c.ctx = context.WithValue(c.ctx, connKey{}, c)
+	if logger := defaultLogger.Load(); logger != nil {
+		c.ConfigLog(*logger)
+	}
 	c.arena = c.newArena()
 	c.handle, err = c.openDB(filename, flags)
 	if err == nil {

tests/parallel/parallel_test.go

@@ -1,7 +1,6 @@
 package tests
 
 import (
-	"errors"
 	"fmt"
 	"io"
 	"log"
@@ -24,15 +23,17 @@ import (
 
 func TestMain(m *testing.M) {
 	sqlite3.Initialize()
-	sqlite3.AutoExtension(func(c *sqlite3.Conn) error {
-		return c.ConfigLog(func(code sqlite3.ExtendedErrorCode, msg string) {
-			// Having to do journal recovery is unexpected.
-			if errors.Is(code, sqlite3.NOTICE) {
-				log.Panicf("%v (%d): %s", code, code, msg)
-			} else {
-				log.Printf("%v (%d): %s", code, code, msg)
-			}
-		})
+	sqlite3.ConfigLog(func(code sqlite3.ExtendedErrorCode, msg string) {
+		switch code {
+		case sqlite3.NOTICE_RECOVER_WAL:
+			// Wal "recovery" is expected.
+			break
+		case sqlite3.NOTICE_RECOVER_ROLLBACK:
+			// Rollback journal recovery is an error.
+			log.Panicf("%v (%d): %s", code, code, msg)
+		default:
+			log.Printf("%v (%d): %s", code, code, msg)
+		}
 	})
 	m.Run()
 }
@@ -68,7 +69,7 @@ func Test_wal(t *testing.T) {
 	if testing.Short() {
 		iter = 1000
 	} else {
-		iter = 2500
+		iter = 5000
 	}
 
 	name := "file:" +