moved middleware event publisher to sse package

2026-01-24 14:06:19 -07:00
parent 720c3fb4e0
commit a6267ac189
5 changed files with 33 additions and 20 deletions
@@ -1,120 +0,0 @@
-package middleware
-
-import (
-	"context"
-	"fmt"
-	"path"
-	"ruben/inventory2/internal/logging"
-	"ruben/inventory2/internal/server/sse"
-	"strings"
-	"time"
-
-	"github.com/gin-gonic/gin"
-)
-
-type UpdateNotificationPublisher struct {
-	log             *logging.Logger
-	sse             *sse.Queue
-	trimBasePath    string
-	basePathPattern string
-}
-
-func NewUpdateNotificationPublisher(
-	log *logging.Logger,
-	sse *sse.Queue,
-) *UpdateNotificationPublisher {
-	return &UpdateNotificationPublisher{
-		log: log,
-		sse: sse,
-	}
-}
-
-// Trim produces an *UpdateNotificationPublisher with the pathPattern
-// trimmed from events otherwise published by p.
-func (p *UpdateNotificationPublisher) Trim(pathPattern string) *UpdateNotificationPublisher {
-	p2 := *p
-	p2.trimBasePath = path.Join(p2.trimBasePath, pathPattern)
-	return &p2
-}
-
-// Group produces an *UpdateNotificationPublisher with the pathPattern
-// appended to the base path used by p, if any, in publishing events.
-// If no base path was set to p, then pathPattern becomes the base path.
-func (p *UpdateNotificationPublisher) Group(pathPattern string) *UpdateNotificationPublisher {
-	p2 := *p
-	p2.basePathPattern = path.Join(p2.basePathPattern, pathPattern)
-	return &p2
-}
-
-// Publish must be applied AFTER a middleware puts in the Identity into the gin.Context.
-func (p *UpdateNotificationPublisher) Publish(pathPattern string) gin.HandlerFunc {
-	trimBasePathSegs := getPathSegments(p.trimBasePath)
-	trimmedBasePathPattern := path.Join(p.basePathPattern, pathPattern)
-	trimmedBasePathPatternSegs := getPathSegments(trimmedBasePathPattern)
-	fullBasePathPatternSegs := append(trimBasePathSegs, trimmedBasePathPatternSegs...)
-
-	return func(c *gin.Context) {
-		reqPathSegs := getPathSegments(c.Request.URL.Path)
-
-		c.Next()
-		if len(c.Errors) > 0 {
-			return
-		}
-		if len(reqPathSegs) < len(fullBasePathPatternSegs) {
-			p.log.Errorf("req path is less that the full path: %v, %v", c.Request.URL.Path, path.Join(p.trimBasePath, p.basePathPattern, pathPattern))
-			return
-		}
-
-		// if the path is a subpath, then emit events along the subpath.
-
-		for i, s := range trimmedBasePathPatternSegs {
-			if isWildcard := s[0] == ':'; isWildcard {
-				continue
-			}
-
-			rs := reqPathSegs[i]
-			if isSubpath := s != rs; isSubpath {
-				continue
-			}
-
-			return
-		}
-
-		topEventParts := reqPathSegs[len(trimBasePathSegs):len(fullBasePathPatternSegs)]
-		topEvent := strings.Join(topEventParts, "_")
-
-		events := make([]string, len(reqPathSegs)-len(fullBasePathPatternSegs)+1)
-		events[0] = topEvent
-		parentEvent := topEvent
-		for i, s := range reqPathSegs[len(fullBasePathPatternSegs):] {
-			e := parentEvent + "_" + s
-			events[i+1] = e
-			parentEvent = e
-		}
-
-		acctID := GetIdentity(c).Account.AccountID
-		for _, e := range events {
-			go func() {
-				ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
-				defer cancel()
-
-				if err := p.sse.Send(ctx, sse.Event{
-					AccountID: acctID,
-					Type:      e,
-					Data:      []byte(fmt.Sprintf(`{"eventType": %q}`, e)),
-				}); err != nil {
-					p.log.Errorf("failed to send sse event to listener: %v", err)
-				}
-			}()
-		}
-	}
-}
-
-func getPathSegments(p string) []string {
-	p = path.Clean(p)
-	if p == "" || p == "." || p == "/" {
-		return nil
-	}
-
-	return strings.Split(strings.Trim(p, "/"), "/")
-}