Store a target's settings as columns (closes #543)

A target's settings move from the per-type JSON string in
targets.config to columns: url, headers, timeout_seconds,
forward_query, archive_expiry and archive_rotation. A column a type
does not use stays empty. headers holds the header map as JSON text
through GORM's JSON serializer, and archive_expiry holds a
time.Duration, 0 meaning never, so nothing that reads a target parses
it. The forms check each setting once, with the same refusals and
messages, and the edit form is filled from the columns, so the
per-type config structs, their parsers and the "could not be read"
branches are gone. A delivery task carries the six settings in place
of the JSON string.

Model: opus-5-5

internal/delivery/target_http_query_test.go

@@ -2,7 +2,6 @@ package delivery_test
 
 import (
 	"context"
-	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -18,25 +17,13 @@ import (
 // with.
 const eventQuery = "a=1&b=2"
 
-// httpTargetConfig is the stored configuration of an HTTP target at
-// targetURL.
-func httpTargetConfig(
-	t *testing.T, targetURL string, forwardQuery bool,
-) string {
-	t.Helper()
-
-	cfg, err := json.Marshal(delivery.HTTPTargetConfig{
-		URL: targetURL, ForwardQuery: forwardQuery,
-	})
-	require.NoError(t, err)
-
-	return string(cfg)
-}
-
 // deliverWithQuery sends one event that arrived with eventQuery to an
-// HTTP target configured with cfg, through the path a received event's
-// delivery takes, and returns the attempt it recorded.
-func deliverWithQuery(t *testing.T, cfg string) database.DeliveryResult {
+// HTTP target at targetURL, with its ForwardQuery setting as given,
+// through the path a received event's delivery takes, and returns the
+// attempt it recorded.
+func deliverWithQuery(
+	t *testing.T, targetURL string, forwardQuery bool,
+) database.DeliveryResult {
 	t.Helper()
 
 	s := newISetup(t)
@@ -47,8 +34,10 @@ func deliverWithQuery(t *testing.T, cfg string) database.DeliveryResult {
 		database.DeliveryStatusPending,
 	)
 	task := iTask(
-		d, event, s.WebhookID, d.TargetID, "query", cfg, 1, 1, &event.Body,
+		d, event, s.WebhookID, d.TargetID, "query", targetURL, 1, 1,
+		&event.Body,
 	)
+	task.ForwardQuery = forwardQuery
 	task.RawQuery = eventQuery
 
 	s.Engine.ExportProcessNewTask(context.TODO(), &task)
@@ -111,9 +100,9 @@ func TestDeliverHTTP_ForwardQuery(t *testing.T) {
 			))
 			t.Cleanup(ts.Close)
 
-			result := deliverWithQuery(t, httpTargetConfig(
+			result := deliverWithQuery(
 				t, ts.URL+tc.path, tc.forwardQuery,
-			))
+			)
 
 			assert.True(t, result.Success)
 			require.Len(t, received, 1)
@@ -144,12 +133,13 @@ func TestDeliverHTTP_ForwardedQueryKeepsTheTargetURLMasked(t *testing.T) {
 	t.Cleanup(ts.Close)
 
 	target := &database.Target{
-		Type:        database.TargetTypeHTTP,
-		Config:      httpTargetConfig(t, ts.URL+"/in?token="+secret, true),
-		MaxAttempts: 1,
+		Type:         database.TargetTypeHTTP,
+		URL:          ts.URL + "/in?token=" + secret,
+		ForwardQuery: true,
+		MaxAttempts:  1,
 	}
 
-	deliverWithQuery(t, target.Config)
+	deliverWithQuery(t, target.URL, target.ForwardQuery)
 	require.Len(t, received, 1)
 
 	sent := <-received
@@ -164,9 +154,9 @@ func TestDeliverHTTP_ForwardedQueryKeepsTheTargetURLMasked(t *testing.T) {
 	}
 
 	// Nothing listens on port 1.
-	failed := deliverWithQuery(t, httpTargetConfig(
+	failed := deliverWithQuery(
 		t, "http://127.0.0.1:1/in?token="+secret, true,
-	))
+	)
 	require.NotEmpty(t, failed.Error)
 	assert.NotContains(t, failed.Error, secret)
 	assert.NotContains(t, failed.Error, eventQuery)