when a job dies, delete images associated with it

message/matrix.go

@@ -125,6 +125,19 @@ func (m *Matrix) Receive() ([]Message, error) {
 	return messages, nil
 }
 
+func (m Matrix) Remove(id string) error {
+	if m.mock {
+		logtr.Infof("matrix.Remove(%s)", id)
+		return nil
+	}
+	c, err := m.getclient()
+	if err != nil {
+		return err
+	}
+	_, err = c.RedactEvent(m.room, id, &gomatrix.ReqRedact{Reason: "stale"})
+	return err
+}
+
 func (m Matrix) Update(id, text string) error {
 	if m.mock {
 		logtr.Infof("matrix.Update(%s)", text)
@@ -185,36 +198,41 @@ func (m Matrix) SendTracked(text string) (string, error) {
 }
 
 func (m Matrix) SendImage(uri string) error {
+	_, err := m.SendImageTracked(uri)
+	return err
+}
+
+func (m Matrix) SendImageTracked(uri string) (string, error) {
 	if m.mock {
 		logtr.Infof("matrix.SendImage(%s)", uri)
-		return nil
+		return "", nil
 	}
 	response, err := http.Get(uri)
 	if err != nil {
-		return err
+		return "", err
 	}
 	if response.StatusCode != http.StatusOK {
 		b, _ := ioutil.ReadAll(response.Body)
 		response.Body.Close()
-		return fmt.Errorf("failed to get %s: (%d) %s", uri, response.StatusCode, b)
+		return "", fmt.Errorf("failed to get %s: (%d) %s", uri, response.StatusCode, b)
 	}
 	b, err := ioutil.ReadAll(response.Body)
 	response.Body.Close()
 	if err != nil {
-		return err
+		return "", err
 	}
 	c, err := m.getclient()
 	if err != nil {
-		return err
+		return "", err
 	}
 	mediaUpload, err := c.UploadToContentRepo(bytes.NewReader(b), "image/jpeg", int64(len(b)))
 	if err != nil {
-		return err
+		return "", err
 	}
 	publicURI := mediaUpload.ContentURI
 	resp, err := c.SendImage(m.room, "img", publicURI)
 	logtr.Debugf("sent image %s => %s: %+v", uri, publicURI, resp)
-	return err
+	return resp.EventID, err
 }
 
 func SetMatrixContinuation(continuation string) {

message/matrix_test.go

@@ -10,9 +10,11 @@ import (
 	"github.com/google/uuid"
 )
 
-func TestMatrixSend(t *testing.T) {
+func TestMatrixSendDel(t *testing.T) {
 	sender := testMatrix(t)
-	if err := sender.Send("hello world from unittest"); err != nil {
+	if id, err := sender.SendTracked("hello world from unittest"); err != nil {
+		t.Fatal(err)
+	} else if err := sender.Remove(id); err != nil {
 		t.Fatal(err)
 	}
 }