The fetcher's "saved opportunities" and "fetched opportunities" lines now name the source

internal/fetcher/fetcher.go

@@ -246,6 +246,9 @@ func (f *Fetcher) startFrom(
 // Opportunities that match the skip rules (see WithSkipRules) are marked
 // Skipped first. The store keeps the marks of an opportunity it already
 // has, so only new ones are skipped.
+//
+// Each save is one worker's, so its lines are logged with the first
+// opportunity's Source.
 func (f *Fetcher) save(
 	ctx context.Context,
 	logger *slog.Logger,
@@ -255,6 +258,10 @@ func (f *Fetcher) save(
 		return nil
 	}
 
+	if len(opportunities) > 0 {
+		logger = logger.With("source", opportunities[0].Source)
+	}
+
 	filters := f.markSkipped(opportunities)
 
 	result, err := f.store.SaveOpportunities(ctx, opportunities)

internal/fetcher/fetcher_test.go

@@ -921,9 +921,12 @@ func TestSaveSkipsNewOpportunities(t *testing.T) {
 	if !skipped(s) {
 		t.Error("a new matching opportunity wasn't skipped")
 	}
+	// Both lines name the source.
 	for _, want := range []string{
+		"msg=\"saved opportunities\" source=FindATender component=fetcher",
 		"skipped_opportunities=1",
-		"msg=\"skipped new opportunity\" component=fetcher uuid=ocds-1 filter=IT",
+		"msg=\"skipped new opportunity\" source=FindATender component=fetcher " +
+			"uuid=ocds-1 filter=IT",
 	} {
 		if !strings.Contains(logged.String(), want) {
 			t.Errorf("log has no %q:\n%s", want, logged.String())

internal/fetcher/worker_findatender.go

@@ -86,7 +86,11 @@ func fetchFindATender(
 		return nil, ErrNoNewReleases
 	}
 
-	tagged(logger).Info("fetched opportunities", "count", len(opportunities))
+	tagged(logger).Info(
+		"fetched opportunities",
+		"source", findATenderSource,
+		"count", len(opportunities),
+	)
 
 	return opportunities, err
 }

internal/fetcher/worker_ftsmock.go

@@ -89,7 +89,11 @@ func fetchFTSMock(
 		opportunity.Source = ftsMockSource
 	}
 
-	tagged(logger).Info("fetched opportunities", "count", len(opportunities))
+	tagged(logger).Info(
+		"fetched opportunities",
+		"source", ftsMockSource,
+		"count", len(opportunities),
+	)
 
 	return opportunities, err
 }