this basically works but it alerts too much for now. Must fix that.

main.go

@@ -1,11 +1,13 @@
 package main
 
 import (
+	"crypto/md5"
 	"fmt"
 	"log"
 	"os"
 	"os/exec"
 	"strings"
+	"sync"
 	"time"
 )
 
@@ -16,7 +18,20 @@ type ContainerInfo struct {
 	Ignores  []string
 }
 
+var notifiedChanges = struct {
+	sync.RWMutex
+	changes map[string]string
+}{changes: make(map[string]string)}
+
 func main() {
+	// Check if GLITCHTIP_DSN environment variable is set
+	glitchtipDSN := os.Getenv("GLITCHTIP_DSN")
+	if glitchtipDSN == "" {
+		log.Fatal("GLITCHTIP_DSN environment variable is not set")
+	}
+
+	log.Println("Starting Oculus...")
+
 	for {
 		containers, err := getContainers()
 		if err != nil {
@@ -26,6 +41,7 @@ func main() {
 		}
 
 		for _, container := range containers {
+			log.Printf("Monitoring container: %s (%s) every %s", container.Name, container.ID, container.Interval)
 			go monitorContainer(container)
 		}
 
@@ -35,6 +51,7 @@ func main() {
 }
 
 func getContainers() ([]ContainerInfo, error) {
+	log.Println("Fetching container list...")
 	output, err := exec.Command("docker", "ps", "--format", "{{.ID}} {{.Label \"oculus.enable\"}} {{.Label \"oculus.interval\"}} {{.Label \"oculus.cname\"}} {{.Label \"oculus.ignores\"}}").Output()
 	if err != nil {
 		return nil, err
@@ -81,11 +98,13 @@ func getContainers() ([]ContainerInfo, error) {
 		})
 	}
 
+	log.Printf("Found %d containers to monitor.", len(containers))
 	return containers, nil
 }
 
 func monitorContainer(container ContainerInfo) {
 	for {
+		log.Printf("Checking diffs for container: %s (%s)", container.Name, container.ID)
 		checkDiff(container)
 		time.Sleep(container.Interval)
 	}
@@ -106,20 +125,39 @@ func checkDiff(container ContainerInfo) {
 	}
 
 	if diffOutput != "" {
-		// Write diff output to a file
-		filename := fmt.Sprintf("%s.diff", container.Name)
-		err = writeToFile(filename, diffOutput)
-		if err != nil {
-			log.Printf("Error writing diff to file for container %s: %v", container.ID, err)
-		}
+		diffHash := fmt.Sprintf("%x", md5.Sum([]byte(diffOutput)))
 
-		// Send notification using go-glitch
-		cmd = exec.Command("go-glitch")
-		cmd.Stdin = strings.NewReader(diffOutput)
-		err = cmd.Run()
-		if err != nil {
-			log.Printf("Error sending notification for container %s: %v", container.ID, err)
+		notifiedChanges.RLock()
+		lastNotifiedHash, notified := notifiedChanges.changes[container.ID]
+		notifiedChanges.RUnlock()
+
+		if !notified || lastNotifiedHash != diffHash {
+			log.Printf("Writing diff output for container: %s (%s)", container.Name, container.ID)
+			// Write diff output to a file
+			filename := fmt.Sprintf("%s.diff", container.Name)
+			err = writeToFile(filename, diffOutput)
+			if err != nil {
+				log.Printf("Error writing diff to file for container %s: %v", container.ID, err)
+			}
+
+			// Send notification using go-glitch
+			log.Printf("Sending notification for container: %s (%s)", container.Name, container.ID)
+			cmd = exec.Command("go-glitch")
+			cmd.Stdin = strings.NewReader(diffOutput)
+			output, err = cmd.CombinedOutput()
+			if err != nil {
+				log.Printf("Error sending notification for container %s: %v", container.ID, err)
+				log.Printf("go-glitch output: %s", output)
+			} else {
+				notifiedChanges.Lock()
+				notifiedChanges.changes[container.ID] = diffHash
+				notifiedChanges.Unlock()
+			}
+		} else {
+			log.Printf("No new changes detected for container: %s (%s)", container.Name, container.ID)
 		}
+	} else {
+		log.Printf("No significant changes detected for container: %s (%s)", container.Name, container.ID)
 	}
 }
 

my_friendly_container.diff

@@ -0,0 +1,3 @@
+A /newfile2.txt
+A /newfile3.txt
+A /newfile.txt