misc #4
|
|
@ -14,9 +14,6 @@
|
||||||
const sqlite = await initWasm(() => wasmUrl);
|
const sqlite = await initWasm(() => wasmUrl);
|
||||||
db = await sqlite.open('todo.db');
|
db = await sqlite.open('todo.db');
|
||||||
|
|
||||||
await db.exec(`
|
|
||||||
DROP TABLE todos;
|
|
||||||
`);
|
|
||||||
await db.exec(`
|
await db.exec(`
|
||||||
CREATE TABLE IF NOT EXISTS todos (
|
CREATE TABLE IF NOT EXISTS todos (
|
||||||
id BLOB PRIMARY KEY NOT NULL,
|
id BLOB PRIMARY KEY NOT NULL,
|
||||||
|
|
@ -54,9 +51,9 @@
|
||||||
function sendChangesToServer(changes) {
|
function sendChangesToServer(changes) {
|
||||||
const formattedChanges = changes.map(change => ({
|
const formattedChanges = changes.map(change => ({
|
||||||
TableName: change[0],
|
TableName: change[0],
|
||||||
PK: Array.isArray(change[1]) ? btoa(change[1]) : btoa(change[1]),
|
PK: Array.isArray(change[1]) ? btoa(String.fromCharCode.apply(null, change[1])) : btoa(change[1]),
|
||||||
ColumnName: change[2],
|
ColumnName: change[2],
|
||||||
Value: Array.isArray(change[3]) ? btoa(String.fromCharCode.apply(null, change[3])) : btoa(change[3]),
|
Value: Array.isArray(change[3]) ? btoa(String.fromCharCode.apply(null, change[3])) : change[3],
|
||||||
ColVersion: Number(change[4]),
|
ColVersion: Number(change[4]),
|
||||||
DBVersion: Number(change[5]),
|
DBVersion: Number(change[5]),
|
||||||
SiteID: Array.isArray(change[6]) ? btoa(new TextDecoder('utf8').decode(change[6])) : btoa(change[6]),
|
SiteID: Array.isArray(change[6]) ? btoa(new TextDecoder('utf8').decode(change[6])) : btoa(change[6]),
|
||||||
|
|
|
||||||
109
main.go
109
main.go
|
|
@ -48,8 +48,8 @@ func initialModel() model {
|
||||||
|
|
||||||
conn, _, err := websocket.DefaultDialer.Dial("ws://localhost:8080/sync", nil)
|
conn, _, err := websocket.DefaultDialer.Dial("ws://localhost:8080/sync", nil)
|
||||||
if err != nil {
|
if err != nil {
|
||||||
log.Println("Error connecting to WebSocket:", err)
|
log.Println("Error connecting to WebSocket:", err)
|
||||||
panic(err)
|
panic(err)
|
||||||
}
|
}
|
||||||
|
|
||||||
m := model{
|
m := model{
|
||||||
|
|
@ -65,18 +65,17 @@ func initialModel() model {
|
||||||
}
|
}
|
||||||
|
|
||||||
type CRSQLChange struct {
|
type CRSQLChange struct {
|
||||||
TableName string
|
TableName string
|
||||||
PK string
|
PK string
|
||||||
ColumnName string
|
ColumnName string
|
||||||
Value string
|
Value string
|
||||||
ColVersion int64
|
ColVersion int64
|
||||||
DBVersion int64
|
DBVersion int64
|
||||||
SiteID string
|
SiteID string
|
||||||
CL int64
|
CL int64
|
||||||
Seq int64
|
Seq int64
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
func (m *model) addTodo(todo string) {
|
func (m *model) addTodo(todo string) {
|
||||||
id, err := uuid.NewV7()
|
id, err := uuid.NewV7()
|
||||||
if err != nil {
|
if err != nil {
|
||||||
|
|
@ -90,59 +89,57 @@ func (m *model) addTodo(todo string) {
|
||||||
panic(err)
|
panic(err)
|
||||||
}
|
}
|
||||||
|
|
||||||
rows, err := m.db.Query("SELECT * FROM crsql_changes")
|
rows, err := m.db.Query("SELECT * FROM crsql_changes")
|
||||||
if err != nil {
|
if err != nil {
|
||||||
log.Println("Error querying crsql_changes:", err)
|
log.Println("Error querying crsql_changes:", err)
|
||||||
return
|
return
|
||||||
}
|
}
|
||||||
defer rows.Close()
|
defer rows.Close()
|
||||||
|
|
||||||
var changes []CRSQLChange
|
var changes []CRSQLChange
|
||||||
for rows.Next() {
|
for rows.Next() {
|
||||||
var change CRSQLChange
|
var change CRSQLChange
|
||||||
var pkRaw []byte
|
var pkRaw []byte
|
||||||
var valueRaw []byte
|
var valueRaw []byte
|
||||||
var siteIDRaw []byte
|
var siteIDRaw []byte
|
||||||
err := rows.Scan(&change.TableName, &pkRaw, &change.ColumnName, &valueRaw,
|
err := rows.Scan(&change.TableName, &pkRaw, &change.ColumnName, &valueRaw,
|
||||||
&change.ColVersion, &change.DBVersion, &siteIDRaw, &change.CL, &change.Seq)
|
&change.ColVersion, &change.DBVersion, &siteIDRaw, &change.CL, &change.Seq)
|
||||||
|
|
||||||
if err != nil {
|
if err != nil {
|
||||||
log.Println("Error scanning change:", err)
|
log.Println("Error scanning change:", err)
|
||||||
return
|
return
|
||||||
}
|
}
|
||||||
change.PK = base64.StdEncoding.EncodeToString(pkRaw)
|
change.PK = base64.StdEncoding.EncodeToString(pkRaw)
|
||||||
change.Value = base64.StdEncoding.EncodeToString(valueRaw)
|
change.Value = base64.StdEncoding.EncodeToString(valueRaw)
|
||||||
change.SiteID = base64.StdEncoding.EncodeToString(siteIDRaw)
|
change.SiteID = base64.StdEncoding.EncodeToString(siteIDRaw)
|
||||||
|
|
||||||
|
changes = append(changes, change)
|
||||||
|
fmt.Println(change)
|
||||||
|
}
|
||||||
|
|
||||||
changes = append(changes, change)
|
if len(changes) > 0 {
|
||||||
fmt.Println(change)
|
m.sendToWebSocket(changes)
|
||||||
}
|
}
|
||||||
|
|
||||||
if len(changes) > 0 {
|
|
||||||
m.sendToWebSocket(changes)
|
|
||||||
}
|
|
||||||
|
|
||||||
m.loadTodos()
|
m.loadTodos()
|
||||||
}
|
}
|
||||||
|
|
||||||
func (m *model) sendToWebSocket(changes []CRSQLChange) {
|
func (m *model) sendToWebSocket(changes []CRSQLChange) {
|
||||||
message := struct {
|
message := struct {
|
||||||
Type string `json:"type"`
|
Type string `json:"type"`
|
||||||
Data []CRSQLChange `json:"data"`
|
Data []CRSQLChange `json:"data"`
|
||||||
}{
|
}{
|
||||||
Type: "changes",
|
Type: "changes",
|
||||||
Data: changes,
|
Data: changes,
|
||||||
}
|
}
|
||||||
|
|
||||||
err := m.conn.WriteJSON(message)
|
err := m.conn.WriteJSON(message)
|
||||||
if err != nil {
|
if err != nil {
|
||||||
log.Println("Error sending changes to WebSocket:", err)
|
log.Println("Error sending changes to WebSocket:", err)
|
||||||
panic(err)
|
panic(err)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
func (m *model) loadTodos() {
|
func (m *model) loadTodos() {
|
||||||
rows, err := m.db.Query("SELECT content FROM todos")
|
rows, err := m.db.Query("SELECT content FROM todos")
|
||||||
if err != nil {
|
if err != nil {
|
||||||
|
|
@ -199,9 +196,9 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
|
||||||
}
|
}
|
||||||
|
|
||||||
func (m model) quit() tea.Cmd {
|
func (m model) quit() tea.Cmd {
|
||||||
m.db.Close()
|
m.db.Close()
|
||||||
m.conn.Close()
|
m.conn.Close()
|
||||||
return tea.Quit
|
return tea.Quit
|
||||||
}
|
}
|
||||||
|
|
||||||
func (m model) View() string {
|
func (m model) View() string {
|
||||||
|
|
|
||||||
277
server/main.go
277
server/main.go
|
|
@ -17,195 +17,184 @@ import (
|
||||||
)
|
)
|
||||||
|
|
||||||
var upgrader = websocket.Upgrader{
|
var upgrader = websocket.Upgrader{
|
||||||
CheckOrigin: func(r *http.Request) bool {
|
CheckOrigin: func(r *http.Request) bool {
|
||||||
return true
|
return true
|
||||||
},
|
},
|
||||||
}
|
}
|
||||||
|
|
||||||
var db *sql.DB
|
var db *sql.DB
|
||||||
var clients = make(map[*websocket.Conn]bool)
|
var clients = make(map[*websocket.Conn]bool)
|
||||||
|
|
||||||
func handleWebSocket(w http.ResponseWriter, r *http.Request) {
|
func handleWebSocket(w http.ResponseWriter, r *http.Request) {
|
||||||
conn, err := upgrader.Upgrade(w, r, nil)
|
conn, err := upgrader.Upgrade(w, r, nil)
|
||||||
if err != nil {
|
if err != nil {
|
||||||
log.Println(err)
|
log.Println(err)
|
||||||
return
|
return
|
||||||
}
|
}
|
||||||
defer conn.Close()
|
defer conn.Close()
|
||||||
|
|
||||||
for {
|
for {
|
||||||
_, message, err := conn.ReadMessage()
|
_, message, err := conn.ReadMessage()
|
||||||
if err != nil {
|
if err != nil {
|
||||||
log.Println(err)
|
log.Println(err)
|
||||||
return
|
return
|
||||||
}
|
}
|
||||||
|
|
||||||
var msg struct {
|
var msg struct {
|
||||||
Type string `json:"type"`
|
Type string `json:"type"`
|
||||||
Data []interface{} `json:"data"`
|
Data []interface{} `json:"data"`
|
||||||
}
|
}
|
||||||
if err := json.Unmarshal(message, &msg); err != nil {
|
if err := json.Unmarshal(message, &msg); err != nil {
|
||||||
log.Println("Error unmarshaling message:", err)
|
log.Println("Error unmarshaling message:", err)
|
||||||
continue
|
continue
|
||||||
}
|
}
|
||||||
|
|
||||||
if msg.Type == "changes" {
|
if msg.Type == "changes" {
|
||||||
fmt.Println("We're applying changes!!")
|
fmt.Println("We're applying changes!!")
|
||||||
applyChanges(msg.Data)
|
applyChanges(msg.Data)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
func printChange(change interface{}) {
|
func printChange(change interface{}) {
|
||||||
// Attempt to type assert and print more details
|
// Attempt to type assert and print more details
|
||||||
if c, ok := change.(map[string]interface{}); ok {
|
if c, ok := change.(map[string]interface{}); ok {
|
||||||
for key, value := range c {
|
for key, value := range c {
|
||||||
fmt.Printf(" %s: %v\n", key, value)
|
fmt.Printf(" %s: %v\n", key, value)
|
||||||
}
|
}
|
||||||
} else {
|
} else {
|
||||||
fmt.Printf(" Not a map: %T\n", change)
|
fmt.Printf(" Not a map: %T\n", change)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
func printChanges(changes []interface{}) {
|
func printChanges(changes []interface{}) {
|
||||||
for i, change := range changes {
|
for i, change := range changes {
|
||||||
fmt.Printf("Change %d: %+v\n", i, change)
|
fmt.Printf("Change %d: %+v\n", i, change)
|
||||||
printChange(change)
|
printChange(change)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
type CRSQLChange struct {
|
type CRSQLChange struct {
|
||||||
TableName string
|
TableName string
|
||||||
PK []byte
|
PK []byte
|
||||||
ColumnName string
|
ColumnName string
|
||||||
Value []byte
|
Value any
|
||||||
ColVersion int64
|
ColVersion int64
|
||||||
DBVersion int64
|
DBVersion int64
|
||||||
SiteID []byte
|
SiteID []byte
|
||||||
CL int64
|
CL int64
|
||||||
Seq int64
|
Seq int64
|
||||||
}
|
}
|
||||||
|
|
||||||
func mapToCRSQLChange(m map[string]interface{}) (CRSQLChange, error) {
|
func mapToCRSQLChange(m map[string]interface{}) (CRSQLChange, error) {
|
||||||
var err error
|
var err error
|
||||||
change := CRSQLChange{}
|
change := CRSQLChange{}
|
||||||
|
|
||||||
change.TableName = m["TableName"].(string)
|
change.TableName = m["TableName"].(string)
|
||||||
change.ColumnName = m["ColumnName"].(string)
|
change.ColumnName = m["ColumnName"].(string)
|
||||||
change.ColVersion = int64(m["ColVersion"].(float64))
|
change.ColVersion = int64(m["ColVersion"].(float64))
|
||||||
change.DBVersion = int64(m["DBVersion"].(float64))
|
change.DBVersion = int64(m["DBVersion"].(float64))
|
||||||
change.CL = int64(m["CL"].(float64))
|
change.CL = int64(m["CL"].(float64))
|
||||||
change.Seq = int64(m["Seq"].(float64))
|
change.Seq = int64(m["Seq"].(float64))
|
||||||
|
|
||||||
// Handle []byte fields
|
// Still unsure about this, it can encode anything
|
||||||
change.PK, err = decodeBase64ToByteArray(m["PK"].(string))
|
if m["Value"] != nil {
|
||||||
if err != nil {
|
change.Value = m["Value"]
|
||||||
return change, err
|
}
|
||||||
}
|
// Handle []byte fields
|
||||||
//fmt.Println(m["PK"])
|
change.PK, err = decodeBase64ToByteArray(m["PK"].(string))
|
||||||
//fmt.Println(m["PK"].(string))
|
if err != nil {
|
||||||
//fmt.Println(base64.URLEncoding.DecodeString(m["PK"].(string)))
|
return change, err
|
||||||
change.Value, err = decodeBase64ToByteArray(m["Value"].(string))
|
}
|
||||||
if err != nil {
|
change.SiteID, err = decodeBase64ToByteArray(m["SiteID"].(string))
|
||||||
return change, err
|
fmt.Println(change.SiteID)
|
||||||
}
|
if err != nil {
|
||||||
change.SiteID, err = decodeBase64ToByteArray(m["SiteID"].(string))
|
return change, err
|
||||||
fmt.Println(change.SiteID)
|
}
|
||||||
if err != nil {
|
|
||||||
return change, err
|
|
||||||
}
|
|
||||||
|
|
||||||
return change, nil
|
return change, nil
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
func decodeBase64ToByteArray(encodedString string) ([]uint8, error) {
|
func decodeBase64ToByteArray(encodedString string) ([]uint8, error) {
|
||||||
// Decode the base64 string
|
// Decode the base64 string
|
||||||
decodedBytes, err := base64.StdEncoding.DecodeString(encodedString)
|
decodedBytes, err := base64.StdEncoding.DecodeString(encodedString)
|
||||||
if err != nil {
|
if err != nil {
|
||||||
return nil, fmt.Errorf("error decoding base64: %w", err)
|
return nil, fmt.Errorf("error decoding base64: %w", err)
|
||||||
}
|
}
|
||||||
|
|
||||||
// Convert bytes to string
|
// Convert bytes to string
|
||||||
decodedString := string(decodedBytes)
|
decodedString := string(decodedBytes)
|
||||||
|
|
||||||
// Split the string by commas
|
// Split the string by commas
|
||||||
stringSlice := strings.Split(decodedString, ",")
|
stringSlice := strings.Split(decodedString, ",")
|
||||||
|
|
||||||
// Convert each string to an integer
|
// Convert each string to an integer
|
||||||
intSlice := make([]uint8, len(stringSlice))
|
intSlice := make([]uint8, len(stringSlice))
|
||||||
for i, s := range stringSlice {
|
for i, s := range stringSlice {
|
||||||
num, err := strconv.Atoi(s)
|
num, err := strconv.Atoi(s)
|
||||||
if err != nil {
|
if err != nil {
|
||||||
return nil, fmt.Errorf("error converting string to int: %w", err)
|
return nil, fmt.Errorf("error converting string to int: %w", err)
|
||||||
}
|
}
|
||||||
intSlice[i] = byte(num)
|
intSlice[i] = byte(num)
|
||||||
}
|
}
|
||||||
|
|
||||||
return intSlice, nil
|
return intSlice, nil
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
func applyChanges(changes []interface{}) {
|
func applyChanges(changes []interface{}) {
|
||||||
tx, _ := db.Begin()
|
tx, _ := db.Begin()
|
||||||
for i, change := range changes {
|
for i, change := range changes {
|
||||||
fmt.Println("Change number: ", i)
|
fmt.Println("Change number: ", i)
|
||||||
fmt.Println(change)
|
fmt.Println(change)
|
||||||
if changeMap, ok := change.(map[string]interface{}); ok {
|
if changeMap, ok := change.(map[string]interface{}); ok {
|
||||||
c, err := mapToCRSQLChange(changeMap)
|
c, err := mapToCRSQLChange(changeMap)
|
||||||
if err != nil {
|
if err != nil {
|
||||||
fmt.Println("Error converting to CRSQLChange:", err)
|
fmt.Println("Error converting to CRSQLChange:", err)
|
||||||
continue
|
continue
|
||||||
}
|
}
|
||||||
_, err = tx.Exec(`INSERT INTO crsql_changes VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`,
|
_, err = tx.Exec(`INSERT INTO crsql_changes VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`,
|
||||||
c.TableName, c.PK, c.ColumnName, c.Value, c.ColVersion, c.DBVersion, c.SiteID, c.CL, c.Seq)
|
c.TableName, c.PK, c.ColumnName, c.Value, c.ColVersion, c.DBVersion, c.SiteID, c.CL, c.Seq)
|
||||||
if err != nil {
|
if err != nil {
|
||||||
log.Println("Error inserting change:", err)
|
log.Println("Error inserting change:", err)
|
||||||
}
|
}
|
||||||
log.Println("We inserted data successfully??")
|
log.Println("We inserted data successfully??")
|
||||||
fmt.Println(c)
|
fmt.Println(c)
|
||||||
} else {
|
} else {
|
||||||
fmt.Println("Not OK to convert change")
|
fmt.Println("Not OK to convert change")
|
||||||
fmt.Println("Change look like:")
|
fmt.Println("Change look like:")
|
||||||
printChange(change)
|
printChange(change)
|
||||||
continue
|
continue
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
tx.Commit()
|
tx.Commit()
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
func broadcastChanges(sender *websocket.Conn, changes interface{}) {
|
func broadcastChanges(sender *websocket.Conn, changes interface{}) {
|
||||||
for client := range clients {
|
for client := range clients {
|
||||||
if client != sender {
|
if client != sender {
|
||||||
client.WriteJSON(map[string]interface{}{"type": "changes", "data": changes})
|
client.WriteJSON(map[string]interface{}{"type": "changes", "data": changes})
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
func main() {
|
func main() {
|
||||||
var err error
|
var err error
|
||||||
val, err := base64.StdEncoding.DecodeString("MTY3LDU0LDQ5LDY3LDExMyw2MCw3NiwxMjAsMTU2LDExMCwyMjcsMTc2LDE4NCwyMjksMjQxLDE0Mw==")
|
if err != nil {
|
||||||
decoded, _ := base64.StdEncoding.DecodeString("MTY3LDU0LDQ5LDY3LDExMyw2MCw3NiwxMjAsMTU2LDExMCwyMjcsMTc2LDE4NCwyMjksMjQxLDE0Mw==")
|
log.Fatal("error:", err)
|
||||||
if err != nil {
|
}
|
||||||
log.Fatal("error:", err)
|
sql.Register("sqlite3_with_extensions",
|
||||||
}
|
|
||||||
fmt.Printf("%q\n", val)
|
|
||||||
fmt.Printf("%q\n", decoded)
|
|
||||||
sql.Register("sqlite3_with_extensions",
|
|
||||||
&sqlite3.SQLiteDriver{
|
&sqlite3.SQLiteDriver{
|
||||||
Extensions: []string{
|
Extensions: []string{
|
||||||
"../db/crsqlite.so",
|
"../db/crsqlite.so",
|
||||||
},
|
},
|
||||||
})
|
})
|
||||||
db, err = sql.Open("sqlite3_with_extensions", "./todo.sqlite")
|
db, err = sql.Open("sqlite3_with_extensions", "./todo.sqlite")
|
||||||
if err != nil {
|
if err != nil {
|
||||||
log.Fatal(err)
|
log.Fatal(err)
|
||||||
}
|
}
|
||||||
err = mast.RunMigrations(db)
|
err = mast.RunMigrations(db)
|
||||||
defer db.Close()
|
defer db.Close()
|
||||||
|
|
||||||
// Initialize database and tables...
|
// Initialize database and tables...
|
||||||
http.HandleFunc("/sync", handleWebSocket)
|
http.HandleFunc("/sync", handleWebSocket)
|
||||||
log.Fatal(http.ListenAndServe(":8080", nil))
|
log.Fatal(http.ListenAndServe(":8080", nil))
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue