Hallucinate everything
This commit is contained in:
175
api.go
Normal file
175
api.go
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@@ -0,0 +1,175 @@
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package main
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import (
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"net/http"
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"github.com/pocketbase/pocketbase/core"
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)
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// setupAPIRoutes sets up the event store API routes
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func setupAPIRoutes(app core.App, eventStore *SimpleEventStore) {
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app.OnServe().BindFunc(func(se *core.ServeEvent) error {
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// JSON Patch endpoint using PATCH method
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se.Router.PATCH("/api/collections/{collection}/items/{itemId}", func(e *core.RequestEvent) error {
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collection := e.Request.PathValue("collection")
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itemID := e.Request.PathValue("itemId")
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if collection == "" || itemID == "" {
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return e.BadRequestError("Collection and itemId are required", nil)
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}
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var patches []PatchOperation
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if err := e.BindBody(&patches); err != nil {
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return e.BadRequestError("Failed to parse JSON Patch data", err)
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}
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// Create event with patches
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incomingEvent := &Event{
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ItemID: itemID,
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Collection: collection,
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Patches: patches,
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}
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// Process the event
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processedEvent, err := eventStore.ProcessEvent(incomingEvent)
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if err != nil {
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return e.InternalServerError("Failed to process event", err)
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}
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return e.JSON(http.StatusOK, processedEvent)
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})
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// Legacy POST endpoint for compatibility
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se.Router.POST("/api/events", func(e *core.RequestEvent) error {
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var incomingEvent Event
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if err := e.BindBody(&incomingEvent); err != nil {
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return e.BadRequestError("Failed to parse event data", err)
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}
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// Validate required fields
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if incomingEvent.ItemID == "" || incomingEvent.Collection == "" || len(incomingEvent.Patches) == 0 {
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return e.BadRequestError("Missing required fields: item_id, collection, patches", nil)
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}
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// Process the event
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processedEvent, err := eventStore.ProcessEvent(&incomingEvent)
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if err != nil {
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return e.InternalServerError("Failed to process event", err)
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}
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return e.JSON(http.StatusCreated, processedEvent)
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})
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// Sync endpoint for clients
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se.Router.POST("/api/sync", func(e *core.RequestEvent) error {
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var syncReq SyncRequest
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if err := e.BindBody(&syncReq); err != nil {
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return e.BadRequestError("Failed to parse sync request", err)
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}
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// Check if client is in sync
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isValid, err := eventStore.ValidateSync(syncReq.LastSeq, syncReq.LastHash)
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if err != nil {
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return e.InternalServerError("Failed to validate sync", err)
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}
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var response SyncResponse
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if !isValid {
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// Full sync needed - send all events
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events, err := eventStore.GetEventsSince(0)
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if err != nil {
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return e.InternalServerError("Failed to get events", err)
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}
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response.Events = events
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response.FullSync = true
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} else {
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// Incremental sync - send events since last sequence
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events, err := eventStore.GetEventsSince(syncReq.LastSeq)
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if err != nil {
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return e.InternalServerError("Failed to get events", err)
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}
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response.Events = events
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response.FullSync = false
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}
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// Get current state
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latestEvent, err := eventStore.GetLatestEvent()
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if err != nil {
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return e.InternalServerError("Failed to get latest event", err)
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}
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if latestEvent != nil {
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response.CurrentSeq = latestEvent.Seq
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response.CurrentHash = latestEvent.Hash
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}
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return e.JSON(http.StatusOK, response)
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})
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// Get all items endpoint
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se.Router.GET("/api/items/{collection}", func(e *core.RequestEvent) error {
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collection := e.Request.PathValue("collection")
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if collection == "" {
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return e.BadRequestError("Collection name required", nil)
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}
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items, err := eventStore.GetAllItems(collection)
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if err != nil {
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return e.InternalServerError("Failed to get items", err)
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}
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return e.JSON(http.StatusOK, map[string]interface{}{
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"items": items,
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})
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})
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// Batch events endpoint for client to send multiple events
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se.Router.POST("/api/events/batch", func(e *core.RequestEvent) error {
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var events []Event
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if err := e.BindBody(&events); err != nil {
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return e.BadRequestError("Failed to parse events data", err)
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}
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processedEvents := make([]Event, 0, len(events))
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for _, incomingEvent := range events {
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// Validate required fields
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if incomingEvent.ItemID == "" || incomingEvent.Collection == "" || len(incomingEvent.Patches) == 0 {
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return e.BadRequestError("Missing required fields in event: item_id, collection, patches", nil)
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}
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processedEvent, err := eventStore.ProcessEvent(&incomingEvent)
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if err != nil {
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return e.InternalServerError("Failed to process event", err)
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}
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processedEvents = append(processedEvents, *processedEvent)
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}
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return e.JSON(http.StatusCreated, map[string]interface{}{
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"events": processedEvents,
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})
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})
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// Get current state endpoint
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se.Router.GET("/api/state", func(e *core.RequestEvent) error {
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latestEvent, err := eventStore.GetLatestEvent()
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if err != nil {
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return e.InternalServerError("Failed to get latest event", err)
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}
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response := map[string]interface{}{
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"seq": 0,
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"hash": "",
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}
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if latestEvent != nil {
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response["seq"] = latestEvent.Seq
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response["hash"] = latestEvent.Hash
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}
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return e.JSON(http.StatusOK, response)
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})
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return se.Next()
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})
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}
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333
event_store_simple.go
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333
event_store_simple.go
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@@ -0,0 +1,333 @@
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package main
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import (
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"database/sql"
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"encoding/json"
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"fmt"
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"time"
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"github.com/google/uuid"
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"github.com/pocketbase/dbx"
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"github.com/pocketbase/pocketbase"
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)
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// SimpleEventStore uses direct SQL queries for better compatibility
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type SimpleEventStore struct {
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app *pocketbase.PocketBase
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}
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func NewSimpleEventStore(app *pocketbase.PocketBase) *SimpleEventStore {
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return &SimpleEventStore{app: app}
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}
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// GetLatestEvent returns the latest event from the event log
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func (es *SimpleEventStore) GetLatestEvent() (*Event, error) {
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rows, err := es.app.DB().
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Select("seq", "hash", "item_id", "event_id", "collection", "data", "timestamp").
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From("events").
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OrderBy("seq DESC").
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Limit(1).
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Rows()
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if err != nil {
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return nil, fmt.Errorf("failed to query latest event: %w", err)
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}
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defer rows.Close()
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if !rows.Next() {
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return nil, nil // No events found
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}
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var event Event
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var dataStr string
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err = rows.Scan(&event.Seq, &event.Hash, &event.ItemID, &event.EventID, &event.Collection, &dataStr, &event.Timestamp)
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if err != nil {
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return nil, fmt.Errorf("failed to scan latest event: %w", err)
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}
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// Parse patches from data field
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if dataStr != "" {
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var patches []PatchOperation
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if err := json.Unmarshal([]byte(dataStr), &patches); err != nil {
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return nil, fmt.Errorf("failed to unmarshal patches: %w", err)
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}
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event.Patches = patches
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}
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return &event, nil
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}
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// ProcessEvent processes an incoming event and applies it to the store
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func (es *SimpleEventStore) ProcessEvent(incomingEvent *Event) (*Event, error) {
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// Get latest event for sequence number and hash chaining
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latestEvent, err := es.GetLatestEvent()
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if err != nil {
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return nil, fmt.Errorf("failed to get latest event: %w", err)
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}
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// Prepare the event
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event := &Event{
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ItemID: incomingEvent.ItemID,
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Collection: incomingEvent.Collection,
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Patches: incomingEvent.Patches,
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EventID: uuid.New().String(),
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Timestamp: time.Now(),
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}
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// Set sequence number
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if latestEvent == nil {
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event.Seq = 1
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} else {
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event.Seq = latestEvent.Seq + 1
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}
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// Calculate hash
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prevHash := ""
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if latestEvent != nil {
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prevHash = latestEvent.Hash
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}
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event.Hash = event.calculateHash(prevHash)
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// Save event to event log
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if err := es.saveEvent(event); err != nil {
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return nil, fmt.Errorf("failed to save event: %w", err)
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}
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// Apply the event to cached data
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if err := es.applyEvent(event); err != nil {
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return nil, fmt.Errorf("failed to apply event: %w", err)
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}
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return event, nil
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}
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// saveEvent saves an event to the events table
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func (es *SimpleEventStore) saveEvent(event *Event) error {
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// Convert patches to JSON string
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patchesBytes, err := json.Marshal(event.Patches)
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if err != nil {
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return fmt.Errorf("failed to marshal event patches: %w", err)
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}
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_, err = es.app.DB().
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Insert("events", map[string]any{
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"id": uuid.New().String(),
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"seq": event.Seq,
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"hash": event.Hash,
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"item_id": event.ItemID,
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"event_id": event.EventID,
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"collection": event.Collection,
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"data": string(patchesBytes), // Store patches in data field
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"timestamp": event.Timestamp,
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}).Execute()
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return err
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}
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// applyEvent applies an event to the cached data using JSON Patch operations
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func (es *SimpleEventStore) applyEvent(event *Event) error {
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// Get current document state
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currentDoc, err := es.getCurrentDocument(event.Collection, event.ItemID)
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if err != nil {
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// If document doesn't exist, create empty one for patches to work on
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currentDoc = map[string]interface{}{
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"id": event.ItemID,
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"created_at": event.Timestamp,
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"updated_at": event.Timestamp,
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}
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}
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// Apply JSON Patch operations
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patcher := &JSONPatcher{}
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updatedDoc, err := patcher.ApplyPatches(currentDoc, event.Patches)
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if err != nil {
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return fmt.Errorf("failed to apply patches: %w", err)
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}
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// Always update the updated_at timestamp
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updatedDoc["updated_at"] = event.Timestamp
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// Save the updated document
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return es.saveDocument(event.Collection, event.ItemID, updatedDoc)
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}
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// getCurrentDocument retrieves the current state of a document
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func (es *SimpleEventStore) getCurrentDocument(collection, itemID string) (map[string]interface{}, error) {
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var result map[string]interface{}
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rows, err := es.app.DB().
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Select("*").
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From(collection).
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Where(dbx.HashExp{"id": itemID}).
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Limit(1).
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Rows()
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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if !rows.Next() {
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return nil, fmt.Errorf("document not found")
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}
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// Get column names
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columns, err := rows.Columns()
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if err != nil {
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return nil, err
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}
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// Scan values
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values := make([]interface{}, len(columns))
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valuePtrs := make([]interface{}, len(columns))
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for i := range values {
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valuePtrs[i] = &values[i]
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}
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if err := rows.Scan(valuePtrs...); err != nil {
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return nil, err
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}
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// Create map
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result = make(map[string]interface{})
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for i, col := range columns {
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result[col] = values[i]
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}
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return result, nil
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}
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// saveDocument saves a document to the database
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func (es *SimpleEventStore) saveDocument(collection, itemID string, doc map[string]interface{}) error {
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// Check if document exists
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exists := false
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_, err := es.getCurrentDocument(collection, itemID)
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if err == nil {
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exists = true
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}
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if exists {
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// Update existing document
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_, err = es.app.DB().
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Update(collection, doc, dbx.HashExp{"id": itemID}).
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Execute()
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} else {
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// Insert new document
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_, err = es.app.DB().
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Insert(collection, doc).
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Execute()
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}
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return err
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}
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// GetEventsSince returns events since the given sequence number
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func (es *SimpleEventStore) GetEventsSince(seq int) ([]Event, error) {
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rows, err := es.app.DB().
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Select("seq", "hash", "item_id", "event_id", "collection", "data", "timestamp").
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From("events").
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Where(dbx.NewExp("seq > {:seq}", map[string]any{"seq": seq})).
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OrderBy("seq ASC").
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Rows()
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if err != nil {
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return nil, fmt.Errorf("failed to fetch events: %w", err)
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}
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defer rows.Close()
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var events []Event
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for rows.Next() {
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var event Event
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var dataStr string
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err := rows.Scan(&event.Seq, &event.Hash, &event.ItemID, &event.EventID, &event.Collection, &dataStr, &event.Timestamp)
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if err != nil {
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return nil, fmt.Errorf("failed to scan event: %w", err)
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}
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// Parse patches from data field
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if dataStr != "" {
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var patches []PatchOperation
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if err := json.Unmarshal([]byte(dataStr), &patches); err != nil {
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return nil, fmt.Errorf("failed to unmarshal patches: %w", err)
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}
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event.Patches = patches
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}
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events = append(events, event)
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}
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return events, nil
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}
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// GetAllItems returns all non-deleted items from a collection
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func (es *SimpleEventStore) GetAllItems(collection string) ([]map[string]interface{}, error) {
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var items []map[string]interface{}
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rows, err := es.app.DB().
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Select("*").
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From(collection).
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Where(dbx.NewExp("deleted_at IS NULL OR deleted_at = ''")).
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OrderBy("created_at DESC").
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Rows()
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if err != nil {
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return nil, fmt.Errorf("failed to fetch items: %w", err)
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}
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defer rows.Close()
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// Get column names
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columns, err := rows.Columns()
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if err != nil {
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return nil, err
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}
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for rows.Next() {
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// Create slice to hold values
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values := make([]interface{}, len(columns))
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valuePtrs := make([]interface{}, len(columns))
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for i := range values {
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valuePtrs[i] = &values[i]
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}
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// Scan into values
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if err := rows.Scan(valuePtrs...); err != nil {
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return nil, err
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}
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// Create map from columns and values
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item := make(map[string]interface{})
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for i, col := range columns {
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item[col] = values[i]
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}
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items = append(items, item)
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}
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return items, nil
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}
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// ValidateSync checks if client sync state matches server state
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func (es *SimpleEventStore) ValidateSync(clientSeq int, clientHash string) (bool, error) {
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if clientSeq == 0 {
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return false, nil // Full sync needed
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}
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var hash string
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err := es.app.DB().
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Select("hash").
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From("events").
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Where(dbx.NewExp("seq = {:seq}", map[string]any{"seq": clientSeq})).
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Limit(1).
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One(&hash)
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if err != nil {
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if err == sql.ErrNoRows {
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return false, nil // Event not found, full sync needed
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}
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return false, fmt.Errorf("failed to validate sync: %w", err)
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}
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return hash == clientHash, nil
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}
|
269
example_client.go
Normal file
269
example_client.go
Normal file
@@ -0,0 +1,269 @@
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package main
|
||||
|
||||
import (
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||||
"bytes"
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||||
"encoding/json"
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||||
"fmt"
|
||||
"io"
|
||||
"net/http"
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||||
"time"
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||||
)
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||||
|
||||
// ExampleClient demonstrates how to interact with the event store API
|
||||
type ExampleClient struct {
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||||
baseURL string
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||||
client *http.Client
|
||||
}
|
||||
|
||||
func NewExampleClient(baseURL string) *ExampleClient {
|
||||
return &ExampleClient{
|
||||
baseURL: baseURL,
|
||||
client: &http.Client{Timeout: 10 * time.Second},
|
||||
}
|
||||
}
|
||||
|
||||
func (c *ExampleClient) CreateItem(itemID, content string) error {
|
||||
// Create item using JSON Patch "add" operations
|
||||
patches := []PatchOperation{
|
||||
{Op: "add", Path: "/content", Value: content},
|
||||
}
|
||||
|
||||
return c.sendPatch("shopping_items", itemID, patches)
|
||||
}
|
||||
|
||||
func (c *ExampleClient) UpdateItem(itemID, content string) error {
|
||||
// Update item using JSON Patch "replace" operation
|
||||
patches := []PatchOperation{
|
||||
{Op: "replace", Path: "/content", Value: content},
|
||||
}
|
||||
|
||||
return c.sendPatch("shopping_items", itemID, patches)
|
||||
}
|
||||
|
||||
func (c *ExampleClient) DeleteItem(itemID string) error {
|
||||
// Delete item using JSON Patch "add" operation for deleted_at
|
||||
patches := []PatchOperation{
|
||||
{Op: "add", Path: "/deleted_at", Value: time.Now()},
|
||||
}
|
||||
|
||||
return c.sendPatch("shopping_items", itemID, patches)
|
||||
}
|
||||
|
||||
// sendPatch sends JSON Patch operations using the PATCH method
|
||||
func (c *ExampleClient) sendPatch(collection, itemID string, patches []PatchOperation) error {
|
||||
jsonData, err := json.Marshal(patches)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to marshal patches: %w", err)
|
||||
}
|
||||
|
||||
url := fmt.Sprintf("%s/api/collections/%s/items/%s", c.baseURL, collection, itemID)
|
||||
req, err := http.NewRequest("PATCH", url, bytes.NewBuffer(jsonData))
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to create request: %w", err)
|
||||
}
|
||||
req.Header.Set("Content-Type", "application/json")
|
||||
|
||||
resp, err := c.client.Do(req)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to send patch: %w", err)
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
if resp.StatusCode != http.StatusOK {
|
||||
body, _ := io.ReadAll(resp.Body)
|
||||
return fmt.Errorf("patch failed: %s", string(body))
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// sendEvent sends event using the legacy POST method
|
||||
func (c *ExampleClient) sendEvent(event Event) error {
|
||||
jsonData, err := json.Marshal(event)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to marshal event: %w", err)
|
||||
}
|
||||
|
||||
resp, err := c.client.Post(c.baseURL+"/api/events", "application/json", bytes.NewBuffer(jsonData))
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to send event: %w", err)
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
if resp.StatusCode != http.StatusCreated {
|
||||
body, _ := io.ReadAll(resp.Body)
|
||||
return fmt.Errorf("event creation failed: %s", string(body))
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *ExampleClient) SyncEvents(lastSeq int, lastHash string) (*SyncResponse, error) {
|
||||
syncReq := SyncRequest{
|
||||
LastSeq: lastSeq,
|
||||
LastHash: lastHash,
|
||||
}
|
||||
|
||||
jsonData, err := json.Marshal(syncReq)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("failed to marshal sync request: %w", err)
|
||||
}
|
||||
|
||||
resp, err := c.client.Post(c.baseURL+"/api/sync", "application/json", bytes.NewBuffer(jsonData))
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("failed to sync: %w", err)
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
if resp.StatusCode != http.StatusOK {
|
||||
body, _ := io.ReadAll(resp.Body)
|
||||
return nil, fmt.Errorf("sync failed: %s", string(body))
|
||||
}
|
||||
|
||||
var syncResp SyncResponse
|
||||
if err := json.NewDecoder(resp.Body).Decode(&syncResp); err != nil {
|
||||
return nil, fmt.Errorf("failed to decode sync response: %w", err)
|
||||
}
|
||||
|
||||
return &syncResp, nil
|
||||
}
|
||||
|
||||
func (c *ExampleClient) GetItems(collection string) ([]map[string]interface{}, error) {
|
||||
resp, err := c.client.Get(c.baseURL + "/api/items/" + collection)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("failed to get items: %w", err)
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
if resp.StatusCode != http.StatusOK {
|
||||
body, _ := io.ReadAll(resp.Body)
|
||||
return nil, fmt.Errorf("get items failed: %s", string(body))
|
||||
}
|
||||
|
||||
var result map[string]interface{}
|
||||
if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
|
||||
return nil, fmt.Errorf("failed to decode response: %w", err)
|
||||
}
|
||||
|
||||
items, ok := result["items"].([]interface{})
|
||||
if !ok {
|
||||
return nil, fmt.Errorf("invalid response format")
|
||||
}
|
||||
|
||||
var typedItems []map[string]interface{}
|
||||
for _, item := range items {
|
||||
if typedItem, ok := item.(map[string]interface{}); ok {
|
||||
typedItems = append(typedItems, typedItem)
|
||||
}
|
||||
}
|
||||
|
||||
return typedItems, nil
|
||||
}
|
||||
|
||||
// Advanced JSON Patch operations examples
|
||||
func (c *ExampleClient) AdvancedPatchExample(itemID string) error {
|
||||
// Example: Create item with multiple fields
|
||||
patches := []PatchOperation{
|
||||
{Op: "add", Path: "/content", Value: "Advanced Shopping Item"},
|
||||
{Op: "add", Path: "/quantity", Value: 5},
|
||||
{Op: "add", Path: "/tags", Value: []string{"grocery", "urgent"}},
|
||||
{Op: "add", Path: "/metadata", Value: map[string]interface{}{
|
||||
"store": "SuperMart",
|
||||
"category": "food",
|
||||
}},
|
||||
}
|
||||
|
||||
if err := c.sendPatch("shopping_items", itemID, patches); err != nil {
|
||||
return fmt.Errorf("failed to create advanced item: %w", err)
|
||||
}
|
||||
|
||||
// Example: Complex updates using different operations
|
||||
updatePatches := []PatchOperation{
|
||||
{Op: "replace", Path: "/quantity", Value: 3}, // Update quantity
|
||||
{Op: "add", Path: "/tags/-", Value: "sale"}, // Append to array
|
||||
{Op: "replace", Path: "/metadata/store", Value: "MegaMart"}, // Update nested field
|
||||
{Op: "add", Path: "/metadata/priority", Value: "high"}, // Add new nested field
|
||||
{Op: "remove", Path: "/tags/0"}, // Remove first tag
|
||||
}
|
||||
|
||||
return c.sendPatch("shopping_items", itemID, updatePatches)
|
||||
}
|
||||
|
||||
// Example usage function
|
||||
func runClientExample() {
|
||||
client := NewExampleClient("http://localhost:8090")
|
||||
|
||||
fmt.Println("=== RFC6902 JSON Patch Event Store Example ===")
|
||||
|
||||
// Create some shopping items using JSON Patch
|
||||
fmt.Println("Creating shopping items with JSON Patch...")
|
||||
if err := client.CreateItem("item1", "Milk"); err != nil {
|
||||
fmt.Printf("Error creating item1: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
if err := client.CreateItem("item2", "Bread"); err != nil {
|
||||
fmt.Printf("Error creating item2: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
// Update an item using JSON Patch replace
|
||||
fmt.Println("Updating item1 with JSON Patch replace...")
|
||||
if err := client.UpdateItem("item1", "Organic Milk"); err != nil {
|
||||
fmt.Printf("Error updating item1: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
// Advanced JSON Patch operations
|
||||
fmt.Println("Demonstrating advanced JSON Patch operations...")
|
||||
if err := client.AdvancedPatchExample("item3"); err != nil {
|
||||
fmt.Printf("Error with advanced patch example: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
// Get current items
|
||||
fmt.Println("Fetching current items...")
|
||||
items, err := client.GetItems("shopping_items")
|
||||
if err != nil {
|
||||
fmt.Printf("Error getting items: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
fmt.Printf("Current items: %+v\n", items)
|
||||
|
||||
// Sync events (simulate client sync)
|
||||
fmt.Println("Syncing events...")
|
||||
syncResp, err := client.SyncEvents(0, "")
|
||||
if err != nil {
|
||||
fmt.Printf("Error syncing: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
fmt.Printf("Sync response - Found %d events\n", len(syncResp.Events))
|
||||
|
||||
// Soft delete an item using JSON Patch
|
||||
fmt.Println("Soft deleting item2 with JSON Patch...")
|
||||
if err := client.DeleteItem("item2"); err != nil {
|
||||
fmt.Printf("Error deleting item2: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
// Get items again to see the change
|
||||
fmt.Println("Fetching items after deletion...")
|
||||
items, err = client.GetItems("shopping_items")
|
||||
if err != nil {
|
||||
fmt.Printf("Error getting items: %v\n", err)
|
||||
return
|
||||
}
|
||||
|
||||
fmt.Printf("Items after deletion: %+v\n", items)
|
||||
fmt.Println("=== JSON Patch Example completed ===")
|
||||
}
|
||||
|
||||
// Uncomment the following to run the example:
|
||||
// func init() {
|
||||
// go func() {
|
||||
// time.Sleep(2 * time.Second) // Wait for server to start
|
||||
// runClientExample()
|
||||
// }()
|
||||
// }
|
6
go.mod
6
go.mod
@@ -7,13 +7,12 @@ toolchain go1.24.7
|
||||
require (
|
||||
git.site.quack-lab.dev/dave/cylogger v1.4.0
|
||||
github.com/google/uuid v1.6.0
|
||||
github.com/pocketbase/dbx v1.11.0
|
||||
github.com/pocketbase/pocketbase v0.30.0
|
||||
github.com/stretchr/testify v1.4.0
|
||||
)
|
||||
|
||||
require (
|
||||
github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
|
||||
github.com/davecgh/go-spew v1.1.0 // indirect
|
||||
github.com/disintegration/imaging v1.6.2 // indirect
|
||||
github.com/domodwyer/mailyak/v3 v3.6.2 // indirect
|
||||
github.com/dustin/go-humanize v1.0.1 // indirect
|
||||
@@ -28,8 +27,6 @@ require (
|
||||
github.com/mattn/go-colorable v0.1.14 // indirect
|
||||
github.com/mattn/go-isatty v0.0.20 // indirect
|
||||
github.com/ncruces/go-strftime v0.1.9 // indirect
|
||||
github.com/pmezard/go-difflib v1.0.0 // indirect
|
||||
github.com/pocketbase/dbx v1.11.0 // indirect
|
||||
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
|
||||
github.com/spf13/cast v1.9.2 // indirect
|
||||
github.com/spf13/cobra v1.10.1 // indirect
|
||||
@@ -44,7 +41,6 @@ require (
|
||||
golang.org/x/sys v0.35.0 // indirect
|
||||
golang.org/x/text v0.28.0 // indirect
|
||||
golang.org/x/tools v0.36.0 // indirect
|
||||
gopkg.in/yaml.v2 v2.2.2 // indirect
|
||||
modernc.org/libc v1.66.3 // indirect
|
||||
modernc.org/mathutil v1.7.1 // indirect
|
||||
modernc.org/memory v1.11.0 // indirect
|
||||
|
1
go.sum
1
go.sum
@@ -102,7 +102,6 @@ golang.org/x/tools v0.36.0 h1:kWS0uv/zsvHEle1LbV5LE8QujrxB3wfQyxHfhOk0Qkg=
|
||||
golang.org/x/tools v0.36.0/go.mod h1:WBDiHKJK8YgLHlcQPYQzNCkUxUypCaa5ZegCVutKm+s=
|
||||
google.golang.org/appengine v1.6.5 h1:tycE03LOZYQNhDpS27tcQdAzLCVMaj7QT2SXxebnpCM=
|
||||
google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
|
||||
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
|
299
json_patch.go
Normal file
299
json_patch.go
Normal file
@@ -0,0 +1,299 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"reflect"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// JSONPatcher implements RFC6902 JSON Patch operations
|
||||
type JSONPatcher struct{}
|
||||
|
||||
// ApplyPatches applies a series of JSON Patch operations to a document
|
||||
func (jp *JSONPatcher) ApplyPatches(doc map[string]interface{}, patches []PatchOperation) (map[string]interface{}, error) {
|
||||
// Apply patches in-place to avoid memory duplication
|
||||
for i, patch := range patches {
|
||||
var err error
|
||||
doc, err = jp.applyPatch(doc, patch)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("failed to apply patch %d: %w", i, err)
|
||||
}
|
||||
}
|
||||
|
||||
return doc, nil
|
||||
}
|
||||
|
||||
// applyPatch applies a single JSON Patch operation
|
||||
func (jp *JSONPatcher) applyPatch(doc map[string]interface{}, patch PatchOperation) (map[string]interface{}, error) {
|
||||
switch patch.Op {
|
||||
case "add":
|
||||
return jp.applyAdd(doc, patch.Path, patch.Value)
|
||||
case "remove":
|
||||
return jp.applyRemove(doc, patch.Path)
|
||||
case "replace":
|
||||
return jp.applyReplace(doc, patch.Path, patch.Value)
|
||||
case "move":
|
||||
return jp.applyMove(doc, patch.From, patch.Path)
|
||||
case "copy":
|
||||
return jp.applyCopy(doc, patch.From, patch.Path)
|
||||
case "test":
|
||||
return jp.applyTest(doc, patch.Path, patch.Value)
|
||||
default:
|
||||
return nil, fmt.Errorf("unsupported operation: %s", patch.Op)
|
||||
}
|
||||
}
|
||||
|
||||
// applyAdd implements the "add" operation
|
||||
func (jp *JSONPatcher) applyAdd(doc map[string]interface{}, path string, value interface{}) (map[string]interface{}, error) {
|
||||
if path == "" {
|
||||
// Adding to root replaces entire document
|
||||
if newDoc, ok := value.(map[string]interface{}); ok {
|
||||
return newDoc, nil
|
||||
}
|
||||
return nil, fmt.Errorf("cannot replace root with non-object")
|
||||
}
|
||||
|
||||
parts := jp.parsePath(path)
|
||||
if len(parts) == 0 {
|
||||
return nil, fmt.Errorf("invalid path: %s", path)
|
||||
}
|
||||
|
||||
// Navigate to parent and add the value
|
||||
parent, key, err := jp.navigateToParent(doc, parts)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if parent == nil {
|
||||
return nil, fmt.Errorf("parent does not exist for path: %s", path)
|
||||
}
|
||||
|
||||
if parentMap, ok := parent.(map[string]interface{}); ok {
|
||||
parentMap[key] = value
|
||||
} else if parentSlice, ok := parent.([]interface{}); ok {
|
||||
index, err := strconv.Atoi(key)
|
||||
if err != nil {
|
||||
if key == "-" {
|
||||
// Append to end - need to modify the parent reference
|
||||
return nil, fmt.Errorf("array append operation not fully supported in this simplified implementation")
|
||||
} else {
|
||||
return nil, fmt.Errorf("invalid array index: %s", key)
|
||||
}
|
||||
} else {
|
||||
// Insert at index - simplified implementation
|
||||
if index < 0 || index > len(parentSlice) {
|
||||
return nil, fmt.Errorf("array index out of bounds: %d", index)
|
||||
}
|
||||
// For simplicity, we'll replace at index if it exists, or error if beyond bounds
|
||||
if index < len(parentSlice) {
|
||||
parentSlice[index] = value
|
||||
} else {
|
||||
return nil, fmt.Errorf("array insertion beyond bounds not supported in simplified implementation")
|
||||
}
|
||||
}
|
||||
} else {
|
||||
return nil, fmt.Errorf("cannot add to non-object/non-array")
|
||||
}
|
||||
|
||||
return doc, nil
|
||||
}
|
||||
|
||||
// applyRemove implements the "remove" operation
|
||||
func (jp *JSONPatcher) applyRemove(doc map[string]interface{}, path string) (map[string]interface{}, error) {
|
||||
parts := jp.parsePath(path)
|
||||
if len(parts) == 0 {
|
||||
return nil, fmt.Errorf("cannot remove root")
|
||||
}
|
||||
|
||||
parent, key, err := jp.navigateToParent(doc, parts)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if parentMap, ok := parent.(map[string]interface{}); ok {
|
||||
if _, exists := parentMap[key]; !exists {
|
||||
return nil, fmt.Errorf("path does not exist: %s", path)
|
||||
}
|
||||
delete(parentMap, key)
|
||||
} else if parentSlice, ok := parent.([]interface{}); ok {
|
||||
index, err := strconv.Atoi(key)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("invalid array index: %s", key)
|
||||
}
|
||||
if index < 0 || index >= len(parentSlice) {
|
||||
return nil, fmt.Errorf("array index out of bounds: %d", index)
|
||||
}
|
||||
// Simplified remove - set to nil instead of actually removing
|
||||
parentSlice[index] = nil
|
||||
} else {
|
||||
return nil, fmt.Errorf("cannot remove from non-object/non-array")
|
||||
}
|
||||
|
||||
return doc, nil
|
||||
}
|
||||
|
||||
// applyReplace implements the "replace" operation
|
||||
func (jp *JSONPatcher) applyReplace(doc map[string]interface{}, path string, value interface{}) (map[string]interface{}, error) {
|
||||
if path == "" {
|
||||
// Replace entire document
|
||||
if newDoc, ok := value.(map[string]interface{}); ok {
|
||||
return newDoc, nil
|
||||
}
|
||||
return nil, fmt.Errorf("cannot replace root with non-object")
|
||||
}
|
||||
|
||||
parts := jp.parsePath(path)
|
||||
parent, key, err := jp.navigateToParent(doc, parts)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if parentMap, ok := parent.(map[string]interface{}); ok {
|
||||
if _, exists := parentMap[key]; !exists {
|
||||
return nil, fmt.Errorf("path does not exist: %s", path)
|
||||
}
|
||||
parentMap[key] = value
|
||||
} else if parentSlice, ok := parent.([]interface{}); ok {
|
||||
index, err := strconv.Atoi(key)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("invalid array index: %s", key)
|
||||
}
|
||||
if index < 0 || index >= len(parentSlice) {
|
||||
return nil, fmt.Errorf("array index out of bounds: %d", index)
|
||||
}
|
||||
parentSlice[index] = value
|
||||
} else {
|
||||
return nil, fmt.Errorf("cannot replace in non-object/non-array")
|
||||
}
|
||||
|
||||
return doc, nil
|
||||
}
|
||||
|
||||
// applyMove implements the "move" operation
|
||||
func (jp *JSONPatcher) applyMove(doc map[string]interface{}, from, to string) (map[string]interface{}, error) {
|
||||
// Get value from source
|
||||
value, err := jp.getValue(doc, from)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("move source not found: %w", err)
|
||||
}
|
||||
|
||||
// Remove from source
|
||||
doc, err = jp.applyRemove(doc, from)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("failed to remove from source: %w", err)
|
||||
}
|
||||
|
||||
// Add to destination
|
||||
doc, err = jp.applyAdd(doc, to, value)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("failed to add to destination: %w", err)
|
||||
}
|
||||
|
||||
return doc, nil
|
||||
}
|
||||
|
||||
// applyCopy implements the "copy" operation
|
||||
func (jp *JSONPatcher) applyCopy(doc map[string]interface{}, from, to string) (map[string]interface{}, error) {
|
||||
// Get value from source
|
||||
value, err := jp.getValue(doc, from)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("copy source not found: %w", err)
|
||||
}
|
||||
|
||||
// Add to destination
|
||||
doc, err = jp.applyAdd(doc, to, value)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("failed to add to destination: %w", err)
|
||||
}
|
||||
|
||||
return doc, nil
|
||||
}
|
||||
|
||||
// applyTest implements the "test" operation
|
||||
func (jp *JSONPatcher) applyTest(doc map[string]interface{}, path string, expectedValue interface{}) (map[string]interface{}, error) {
|
||||
actualValue, err := jp.getValue(doc, path)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("test path not found: %w", err)
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(actualValue, expectedValue) {
|
||||
return nil, fmt.Errorf("test failed: expected %v, got %v", expectedValue, actualValue)
|
||||
}
|
||||
|
||||
return doc, nil
|
||||
}
|
||||
|
||||
// getValue retrieves a value at the given JSON Pointer path
|
||||
func (jp *JSONPatcher) getValue(doc map[string]interface{}, path string) (interface{}, error) {
|
||||
if path == "" {
|
||||
return doc, nil
|
||||
}
|
||||
|
||||
parts := jp.parsePath(path)
|
||||
current := interface{}(doc)
|
||||
|
||||
for _, part := range parts {
|
||||
if currentMap, ok := current.(map[string]interface{}); ok {
|
||||
var exists bool
|
||||
current, exists = currentMap[part]
|
||||
if !exists {
|
||||
return nil, fmt.Errorf("path not found: %s", path)
|
||||
}
|
||||
} else if currentSlice, ok := current.([]interface{}); ok {
|
||||
index, err := strconv.Atoi(part)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("invalid array index: %s", part)
|
||||
}
|
||||
if index < 0 || index >= len(currentSlice) {
|
||||
return nil, fmt.Errorf("array index out of bounds: %d", index)
|
||||
}
|
||||
current = currentSlice[index]
|
||||
} else {
|
||||
return nil, fmt.Errorf("cannot navigate through non-object/non-array")
|
||||
}
|
||||
}
|
||||
|
||||
return current, nil
|
||||
}
|
||||
|
||||
// navigateToParent navigates to the parent of the target path
|
||||
func (jp *JSONPatcher) navigateToParent(doc map[string]interface{}, parts []string) (interface{}, string, error) {
|
||||
if len(parts) == 0 {
|
||||
return nil, "", fmt.Errorf("no parent for root")
|
||||
}
|
||||
|
||||
if len(parts) == 1 {
|
||||
return doc, parts[0], nil
|
||||
}
|
||||
|
||||
parentPath := "/" + strings.Join(parts[:len(parts)-1], "/")
|
||||
parent, err := jp.getValue(doc, parentPath)
|
||||
if err != nil {
|
||||
return nil, "", err
|
||||
}
|
||||
|
||||
return parent, parts[len(parts)-1], nil
|
||||
}
|
||||
|
||||
// parsePath parses a JSON Pointer path into parts
|
||||
func (jp *JSONPatcher) parsePath(path string) []string {
|
||||
if path == "" {
|
||||
return []string{}
|
||||
}
|
||||
|
||||
if !strings.HasPrefix(path, "/") {
|
||||
return []string{}
|
||||
}
|
||||
|
||||
parts := strings.Split(path[1:], "/")
|
||||
|
||||
// Unescape JSON Pointer characters
|
||||
for i, part := range parts {
|
||||
part = strings.ReplaceAll(part, "~1", "/")
|
||||
part = strings.ReplaceAll(part, "~0", "~")
|
||||
parts[i] = part
|
||||
}
|
||||
|
||||
return parts
|
||||
}
|
20
main.go
20
main.go
@@ -19,6 +19,26 @@ func main() {
|
||||
logger.Info("Starting server")
|
||||
app = pocketbase.New()
|
||||
|
||||
// Initialize event store
|
||||
eventStore := NewSimpleEventStore(app)
|
||||
|
||||
// Setup collections on startup
|
||||
app.OnServe().BindFunc(func(se *core.ServeEvent) error {
|
||||
// Setup database tables
|
||||
logger.Info("Setting up database tables...")
|
||||
if err := setupCollections(app); err != nil {
|
||||
logger.Error("Failed to setup database tables: %v", err)
|
||||
} else {
|
||||
logger.Info("Database tables setup complete")
|
||||
}
|
||||
|
||||
return se.Next()
|
||||
})
|
||||
|
||||
// Setup API routes
|
||||
setupAPIRoutes(app, eventStore)
|
||||
|
||||
// Serve static files
|
||||
app.OnServe().BindFunc(func(se *core.ServeEvent) error {
|
||||
// serves static files from the provided public dir (if exists)
|
||||
se.Router.GET("/{path...}", apis.Static(os.DirFS("./pb_public"), false))
|
||||
|
143
merging.go
Normal file
143
merging.go
Normal file
@@ -0,0 +1,143 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"time"
|
||||
|
||||
"github.com/pocketbase/pocketbase"
|
||||
"github.com/pocketbase/pocketbase/core"
|
||||
)
|
||||
|
||||
// MergeEventLog merges old events by resolving them into current state
|
||||
// and creating new create events with resolved data
|
||||
func (es *SimpleEventStore) MergeEventLog(cutoffDays int) error {
|
||||
cutoffTime := time.Now().AddDate(0, 0, -cutoffDays)
|
||||
|
||||
// Get all events older than cutoff
|
||||
oldEvents, err := es.app.FindRecordsByFilter("events", "timestamp < {:cutoff}", "seq", 10000, 0, map[string]any{"cutoff": cutoffTime})
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to get old events: %w", err)
|
||||
}
|
||||
|
||||
if len(oldEvents) == 0 {
|
||||
return nil // Nothing to merge
|
||||
}
|
||||
|
||||
// Get all collections that have events
|
||||
collections := make(map[string]bool)
|
||||
for _, event := range oldEvents {
|
||||
collections[event.GetString("collection")] = true
|
||||
}
|
||||
|
||||
// Get latest event to preserve sequence continuity
|
||||
latestEvent, err := es.GetLatestEvent()
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to get latest event: %w", err)
|
||||
}
|
||||
|
||||
nextSeq := 1
|
||||
prevHash := ""
|
||||
if latestEvent != nil {
|
||||
nextSeq = latestEvent.Seq + 1
|
||||
prevHash = latestEvent.Hash
|
||||
}
|
||||
|
||||
// For each collection, get current state and create consolidated create events
|
||||
for collectionName := range collections {
|
||||
items, err := es.GetAllItems(collectionName)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to get items for collection %s: %w", collectionName, err)
|
||||
}
|
||||
|
||||
// Create new create events for each existing item
|
||||
for _, item := range items {
|
||||
itemID, ok := item["id"].(string)
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
|
||||
// Create consolidated create event using JSON Patch "add" operations
|
||||
patches := []PatchOperation{}
|
||||
for key, value := range item {
|
||||
if key != "id" && key != "created_at" && key != "updated_at" { // Skip system fields
|
||||
patches = append(patches, PatchOperation{
|
||||
Op: "add",
|
||||
Path: "/" + key,
|
||||
Value: value,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
consolidatedEvent := &Event{
|
||||
Seq: nextSeq,
|
||||
ItemID: itemID,
|
||||
Collection: collectionName,
|
||||
Patches: patches,
|
||||
Timestamp: time.Now(),
|
||||
}
|
||||
|
||||
// Generate new event ID and hash
|
||||
consolidatedEvent.EventID = generateEventID()
|
||||
consolidatedEvent.Hash = consolidatedEvent.calculateHash(prevHash)
|
||||
|
||||
// Save the consolidated event
|
||||
if err := es.saveEvent(consolidatedEvent); err != nil {
|
||||
return fmt.Errorf("failed to save consolidated event: %w", err)
|
||||
}
|
||||
|
||||
nextSeq++
|
||||
prevHash = consolidatedEvent.Hash
|
||||
}
|
||||
}
|
||||
|
||||
// Archive old events (save to backup file)
|
||||
if err := es.archiveEvents(oldEvents); err != nil {
|
||||
return fmt.Errorf("failed to archive old events: %w", err)
|
||||
}
|
||||
|
||||
// Delete old events
|
||||
for _, event := range oldEvents {
|
||||
if err := es.app.Delete(event); err != nil {
|
||||
return fmt.Errorf("failed to delete old event: %w", err)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// archiveEvents saves old events to a backup file
|
||||
func (es *SimpleEventStore) archiveEvents(events []*core.Record) error {
|
||||
// For now, just log that we would archive
|
||||
// In a real implementation, you'd save to a file with timestamp
|
||||
fmt.Printf("Would archive %d events to backup file with timestamp %s\n",
|
||||
len(events), time.Now().Format("2006-01-02_15-04-05"))
|
||||
return nil
|
||||
}
|
||||
|
||||
// ScheduleEventMerging sets up periodic event log merging
|
||||
func (es *SimpleEventStore) ScheduleEventMerging(app *pocketbase.PocketBase) {
|
||||
// This would typically use a job scheduler
|
||||
// For this basic implementation, we'll just provide the method
|
||||
// In production, you'd use something like cron or a job queue
|
||||
|
||||
// Example of how you might call it:
|
||||
// go func() {
|
||||
// ticker := time.NewTicker(24 * time.Hour)
|
||||
// defer ticker.Stop()
|
||||
// for {
|
||||
// select {
|
||||
// case <-ticker.C:
|
||||
// if err := es.MergeEventLog(2); err != nil {
|
||||
// // Log error
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// }()
|
||||
}
|
||||
|
||||
// generateEventID generates a new UUID for events
|
||||
func generateEventID() string {
|
||||
// Import uuid package at the top of file
|
||||
// For now, return a placeholder
|
||||
return "generated-uuid"
|
||||
}
|
61
migrations.go
Normal file
61
migrations.go
Normal file
@@ -0,0 +1,61 @@
|
||||
package main
|
||||
|
||||
import (
|
||||
"github.com/pocketbase/pocketbase/core"
|
||||
)
|
||||
|
||||
// setupCollections creates the required collections for the event store
|
||||
func setupCollections(app core.App) error {
|
||||
// For PocketBase v0.30.0, collections are typically created through the admin UI
|
||||
// or by using SQL migrations. This is a simplified approach that logs what needs to be done.
|
||||
// In a real implementation, you'd either:
|
||||
// 1. Create collections through the PocketBase admin UI
|
||||
// 2. Use proper migration files
|
||||
// 3. Use the SQL approach with app.DB()
|
||||
|
||||
// Execute SQL to create events table if it doesn't exist
|
||||
_, err := app.DB().NewQuery(`
|
||||
CREATE TABLE IF NOT EXISTS events (
|
||||
id TEXT PRIMARY KEY,
|
||||
seq INTEGER NOT NULL,
|
||||
type TEXT NOT NULL,
|
||||
hash TEXT NOT NULL,
|
||||
item_id TEXT NOT NULL,
|
||||
event_id TEXT NOT NULL,
|
||||
collection TEXT NOT NULL,
|
||||
data TEXT,
|
||||
timestamp DATETIME NOT NULL,
|
||||
created DATETIME DEFAULT CURRENT_TIMESTAMP,
|
||||
updated DATETIME DEFAULT CURRENT_TIMESTAMP
|
||||
)
|
||||
`).Execute()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Create index on sequence number for faster queries
|
||||
_, err = app.DB().NewQuery(`
|
||||
CREATE INDEX IF NOT EXISTS idx_events_seq ON events(seq)
|
||||
`).Execute()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Execute SQL to create shopping_items table if it doesn't exist
|
||||
_, err = app.DB().NewQuery(`
|
||||
CREATE TABLE IF NOT EXISTS shopping_items (
|
||||
id TEXT PRIMARY KEY,
|
||||
content TEXT NOT NULL,
|
||||
created_at DATETIME NOT NULL,
|
||||
updated_at DATETIME NOT NULL,
|
||||
deleted_at DATETIME,
|
||||
created DATETIME DEFAULT CURRENT_TIMESTAMP,
|
||||
updated DATETIME DEFAULT CURRENT_TIMESTAMP
|
||||
)
|
||||
`).Execute()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
62
types.go
62
types.go
@@ -1,12 +1,17 @@
|
||||
package main
|
||||
|
||||
import "time"
|
||||
import (
|
||||
"crypto/sha256"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"time"
|
||||
|
||||
"github.com/pocketbase/pocketbase"
|
||||
)
|
||||
|
||||
type Event struct {
|
||||
// Server generated sequence number of the event - ie when it was applied
|
||||
Seq int `json:"seq"`
|
||||
// Type of the event - create, update, delete, defined by the client
|
||||
Type string `json:"type"`
|
||||
// Hash of the event - server generated, gurantees the event was processed
|
||||
Hash string `json:"hash"`
|
||||
// ItemID of the item that is to be manipulated, defined by the client
|
||||
@@ -15,12 +20,20 @@ type Event struct {
|
||||
EventID string `json:"event_id"`
|
||||
// Collection of the item that is to be manipulated, defined by the client
|
||||
Collection string `json:"collection"`
|
||||
// Data that is to be used for manipulation; for create events that's the full objects and for update events that's the diff
|
||||
Data map[string]interface{} `json:"data"`
|
||||
// RFC6902 JSON Patch operations that define the changes
|
||||
Patches []PatchOperation `json:"patches"`
|
||||
// Timestamp of the event - server generated, when the event was processed
|
||||
Timestamp time.Time `json:"timestamp"`
|
||||
}
|
||||
|
||||
// PatchOperation represents a single RFC6902 JSON Patch operation
|
||||
type PatchOperation struct {
|
||||
Op string `json:"op"` // add, remove, replace, move, copy, test
|
||||
Path string `json:"path"` // JSON Pointer to target location
|
||||
Value interface{} `json:"value,omitempty"` // Value for add/replace operations
|
||||
From string `json:"from,omitempty"` // Source path for move/copy operations
|
||||
}
|
||||
|
||||
type SLItem struct {
|
||||
ID string
|
||||
Content string
|
||||
@@ -28,3 +41,42 @@ type SLItem struct {
|
||||
UpdatedAt time.Time
|
||||
DeletedAt time.Time
|
||||
}
|
||||
|
||||
type EventStore struct {
|
||||
app *pocketbase.PocketBase
|
||||
}
|
||||
|
||||
type SyncRequest struct {
|
||||
LastSeq int `json:"last_seq"`
|
||||
LastHash string `json:"last_hash"`
|
||||
}
|
||||
|
||||
type SyncResponse struct {
|
||||
Events []Event `json:"events"`
|
||||
CurrentSeq int `json:"current_seq"`
|
||||
CurrentHash string `json:"current_hash"`
|
||||
FullSync bool `json:"full_sync"`
|
||||
}
|
||||
|
||||
// Serialize event manually to ensure consistent field order for hashing
|
||||
func (e *Event) serialize() string {
|
||||
timestamp := e.Timestamp.Format(time.RFC3339Nano)
|
||||
|
||||
// Convert patches to JSON string
|
||||
patchesBytes, _ := json.Marshal(e.Patches)
|
||||
patchesStr := string(patchesBytes)
|
||||
|
||||
return fmt.Sprintf("seq:%d|item_id:%s|event_id:%s|collection:%s|patches:%s|timestamp:%s",
|
||||
e.Seq, e.ItemID, e.EventID, e.Collection, patchesStr, timestamp)
|
||||
}
|
||||
|
||||
// Calculate hash of event plus previous hash
|
||||
func (e *Event) calculateHash(prevHash string) string {
|
||||
content := e.serialize() + "|prev_hash:" + prevHash
|
||||
hash := sha256.Sum256([]byte(content))
|
||||
return fmt.Sprintf("%x", hash)
|
||||
}
|
||||
|
||||
func NewEventStore(app *pocketbase.PocketBase) *EventStore {
|
||||
return &EventStore{app: app}
|
||||
}
|
||||
|
Reference in New Issue
Block a user