chore: mercury changes

go.mod

@@ -8,6 +8,7 @@ require (
 	github.com/gorilla/websocket v1.5.1
 	github.com/matryer/is v1.4.1
 	github.com/ravilushqa/otelgqlgen v0.15.0
+	github.com/tursodatabase/go-libsql v0.0.0-20240322134723-08771dcdd2f1
 	github.com/vektah/gqlparser/v2 v2.5.11
 	go.opentelemetry.io/otel v1.23.1
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.23.1

go.sum

@@ -99,6 +99,8 @@ github.com/oklog/ulid/v2 v2.1.0 h1:+9lhoxAP56we25tyYETBBY1YLA2SaoLvUFgrP2miPJU=
 github.com/oklog/ulid/v2 v2.1.0/go.mod h1:rcEKHmBBKfef9DhnvX7y1HZBYxjXb0cP5ExxNsTT1QQ=
 github.com/pborman/getopt v0.0.0-20170112200414-7148bc3a4c30/go.mod h1:85jBQOZwpVEaDAr341tbn15RS4fCAsIst0qp7i8ex1o=
 github.com/pelletier/go-toml v1.0.1-0.20170904195809-1d6b12b7cb29/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v1.18.0 h1:HzFfmkOzH5Q8L8G+kSJKUx5dtG87sewO+FoDDqP5Tbk=
@@ -221,6 +223,8 @@ gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
+gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
 modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6 h1:5D53IMaUuA5InSeMu9eJtlQXS2NxAhyWQvkKEgXZhHI=
 modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6/go.mod h1:Qz0X07sNOR1jWYCrJMEnbW/X55x206Q7Vt4mz6/wHp4=
 modernc.org/libc v1.41.0 h1:g9YAc6BkKlgORsUWj+JwqoB1wU3o4DE3bM3yvA3k+Gk=

libsql_embed/open.go

@@ -0,0 +1,120 @@
+package libsqlembed
+
+import (
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"fmt"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/tursodatabase/go-libsql"
+)
+
+func init() {
+	sql.Register("libsql+embed", &db{})
+}
+
+type db struct {
+	conns map[string]connector
+	mu    sync.RWMutex
+}
+
+type connector struct {
+	*libsql.Connector
+	dsn    string
+	dir    string
+	driver *db
+}
+
+func (c *connector) Close() error {
+	c.driver.mu.Lock()
+	delete(c.driver.conns, c.dsn)
+	c.driver.mu.Unlock()
+
+	defer os.RemoveAll(c.dir)
+
+	if err := c.Connector.Sync(); err != nil {
+		return fmt.Errorf("syncing database: %w", err)
+	}
+
+	return c.Connector.Close()
+}
+
+func (db *db) OpenConnector(dsn string) (driver.Connector, error) {
+	if c, ok := func() (connector, bool) {
+		db.mu.RLock()
+		defer db.mu.RUnlock()
+		c, ok := db.conns[dsn]
+		return c, ok
+	}(); ok {
+		return c, nil
+	}
+
+	db.mu.Lock()
+	defer db.mu.Unlock()
+
+	u, err := url.Parse(dsn)
+	if err != nil {
+		return nil, err
+	}
+
+	var primary url.URL
+	primary.Scheme = strings.TrimSuffix(u.Scheme, "+embed")
+	primary.Host = u.Host
+
+	dbname, _, _ := strings.Cut(u.Host, ".")
+
+	authToken := u.Query().Get("authToken")
+	if authToken == "" {
+		return nil, fmt.Errorf("missing authToken")
+	}
+
+	opts := []libsql.Option{
+		libsql.WithAuthToken(authToken),
+	}
+
+	if refresh, err := strconv.ParseInt(u.Query().Get("refresh"),10,64); err == nil {
+		opts = append(opts, libsql.WithSyncInterval(time.Duration(refresh)*time.Minute))
+	}
+
+	if readWrite, err := strconv.ParseBool(u.Query().Get("readYourWrites")); err == nil {
+		opts = append(opts, libsql.WithReadYourWrites(readWrite))
+	}
+	if key := u.Query().Get("key"); key != "" {
+		opts = append(opts, libsql.WithEncryption(key))
+	}
+	
+	dir, err := os.MkdirTemp("", "libsql-*")
+	if err != nil {
+		return nil, fmt.Errorf("creating temporary directory: %w", err)
+	}
+
+	dbPath := filepath.Join(dir, dbname)
+
+	c, err := libsql.NewEmbeddedReplicaConnector(
+		dbPath,
+		primary.String(),
+		opts...)
+	if err != nil {
+		return nil, fmt.Errorf("creating connector: %w", err)
+	}
+
+	connector := connector{c, dsn, dir, db}
+	db.conns[dsn] = connector
+
+	return connector, nil
+}
+
+func (db *db) Open(dsn string) (driver.Conn, error) {
+	c, err := db.OpenConnector(dsn)
+	if err != nil {
+		return nil, err
+	}
+	return c.Connect(context.Background())
+}