Centralize Postgres event envelope mapping

internal/sinks/postgres/map.go

@@ -48,13 +48,7 @@ func mapObservationEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 
 	writes = append(writes, fksinks.PostgresWrite{
 		Table: tableObservations,
-		Values: map[string]any{
+		Values: parentEventValues(e, map[string]any{
-			"event_id":                  e.ID,
-			"event_kind":                string(e.Kind),
-			"event_source":              e.Source,
-			"event_schema":              e.Schema,
-			"event_emitted_at":          e.EmittedAt.UTC(),
-			"event_effective_at":        nullableTime(e.EffectiveAt),
 			"station_id":                nullableString(obs.StationID),
 			"station_name":              nullableString(obs.StationName),
 			"observed_at":               observedAt,
@@ -70,7 +64,7 @@ func mapObservationEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 			"visibility_meters":         nullableFloat64(obs.VisibilityMeters),
 			"relative_humidity_percent": nullableFloat64(obs.RelativeHumidityPercent),
 			"apparent_temperature_c":    nullableFloat64(obs.ApparentTemperatureC),
-		},
+		}),
 	})
 
 	for i, pw := range obs.PresentWeather {
@@ -109,13 +103,7 @@ func mapForecastEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 
 	writes = append(writes, fksinks.PostgresWrite{
 		Table: tableForecasts,
-		Values: map[string]any{
+		Values: parentEventValues(e, map[string]any{
-			"event_id":           e.ID,
-			"event_kind":         string(e.Kind),
-			"event_source":       e.Source,
-			"event_schema":       e.Schema,
-			"event_emitted_at":   e.EmittedAt.UTC(),
-			"event_effective_at": nullableTime(e.EffectiveAt),
 			"location_id":      nullableString(run.LocationID),
 			"location_name":    nullableString(run.LocationName),
 			"issued_at":        issuedAt,
@@ -125,7 +113,7 @@ func mapForecastEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 			"longitude":        nullableFloat64(run.Longitude),
 			"elevation_meters": nullableFloat64(run.ElevationMeters),
 			"period_count":     len(run.Periods),
-		},
+		}),
 	})
 
 	for i, p := range run.Periods {
@@ -186,13 +174,7 @@ func mapForecastDiscussionEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error
 	writes := make([]fksinks.PostgresWrite, 0, 1+len(run.KeyMessages))
 	writes = append(writes, fksinks.PostgresWrite{
 		Table: tableForecastDiscussions,
-		Values: map[string]any{
+		Values: parentEventValues(e, map[string]any{
-			"event_id":             e.ID,
-			"event_kind":           string(e.Kind),
-			"event_source":         e.Source,
-			"event_schema":         e.Schema,
-			"event_emitted_at":     e.EmittedAt.UTC(),
-			"event_effective_at":   nullableTime(e.EffectiveAt),
 			"office_id":            nullableString(run.OfficeID),
 			"office_name":          nullableString(run.OfficeName),
 			"issued_at":            issuedAt,
@@ -205,7 +187,7 @@ func mapForecastDiscussionEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error
 			"long_term_issued_at":  longTermIssuedAt,
 			"long_term_text":       longTermText,
 			"key_message_count":    len(run.KeyMessages),
-		},
+		}),
 	})
 
 	for i, msg := range run.KeyMessages {
@@ -236,17 +218,11 @@ func mapWeatherStoryEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 	writes := make([]fksinks.PostgresWrite, 0, 1+len(run.Stories))
 	writes = append(writes, fksinks.PostgresWrite{
 		Table: tableWeatherStoryRuns,
-		Values: map[string]any{
+		Values: parentEventValues(e, map[string]any{
-			"event_id":           e.ID,
-			"event_kind":         string(e.Kind),
-			"event_source":       e.Source,
-			"event_schema":       e.Schema,
-			"event_emitted_at":   e.EmittedAt.UTC(),
-			"event_effective_at": nullableTime(e.EffectiveAt),
 			"office_id":   nullableString(run.OfficeID),
 			"as_of":       asOf,
 			"story_count": len(run.Stories),
-		},
+		}),
 	})
 
 	for i, story := range run.Stories {
@@ -290,20 +266,14 @@ func mapAlertEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 
 	writes = append(writes, fksinks.PostgresWrite{
 		Table: tableAlertRuns,
-		Values: map[string]any{
+		Values: parentEventValues(e, map[string]any{
-			"event_id":           e.ID,
-			"event_kind":         string(e.Kind),
-			"event_source":       e.Source,
-			"event_schema":       e.Schema,
-			"event_emitted_at":   e.EmittedAt.UTC(),
-			"event_effective_at": nullableTime(e.EffectiveAt),
 			"location_id":   nullableString(run.LocationID),
 			"location_name": nullableString(run.LocationName),
 			"as_of":         asOf,
 			"latitude":      nullableFloat64(run.Latitude),
 			"longitude":     nullableFloat64(run.Longitude),
 			"alert_count":   len(run.Alerts),
-		},
+		}),
 	})
 
 	for i, a := range run.Alerts {
@@ -372,13 +342,7 @@ func mapOutlookEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 	writes := make([]fksinks.PostgresWrite, 0, 1+len(run.Outlooks))
 	writes = append(writes, fksinks.PostgresWrite{
 		Table: tableOutlookRuns,
-		Values: map[string]any{
+		Values: parentEventValues(e, map[string]any{
-			"event_id":           e.ID,
-			"event_kind":         string(e.Kind),
-			"event_source":       e.Source,
-			"event_schema":       e.Schema,
-			"event_emitted_at":   e.EmittedAt.UTC(),
-			"event_effective_at": nullableTime(e.EffectiveAt),
 			"location_id":   nullableString(run.LocationID),
 			"location_name": nullableString(run.LocationName),
 			"latitude":      nullableFloat64(run.Latitude),
@@ -386,7 +350,7 @@ func mapOutlookEvent(e fkevent.Event) ([]fksinks.PostgresWrite, error) {
 			"as_of":         asOf,
 			"issued_at":     nullableTime(run.IssuedAt),
 			"outlook_count": len(run.Outlooks),
-		},
+		}),
 	})
 
 	for i, outlook := range run.Outlooks {
@@ -488,6 +452,21 @@ func decodePayload[T any](payload any) (T, error) {
 	return out, nil
 }
 
+func parentEventValues(e fkevent.Event, values map[string]any) map[string]any {
+	out := map[string]any{
+		"event_id":           e.ID,
+		"event_kind":         string(e.Kind),
+		"event_source":       e.Source,
+		"event_schema":       e.Schema,
+		"event_emitted_at":   e.EmittedAt.UTC(),
+		"event_effective_at": nullableTime(e.EffectiveAt),
+	}
+	for k, v := range values {
+		out[k] = v
+	}
+	return out
+}
+
 func nullableDiscussionSection(section *model.WeatherForecastDiscussionSection) (any, any, any) {
 	if section == nil {
 		return nil, nil, nil