fix: pass topics inside target struct

Author: Lakshay Kalbhor

internal/relay/source_pool.go

@@ -126,6 +126,7 @@ func (sp *SourcePool) SetInitialOffsets(of map[string]map[int32]kgo.Offset) {
 	// Set the current candidate with initial weight and a placeholder ID. This initial
 	// weight ensures we resume consuming from where last left off. A real
 	// healthy node should replace this via background checks
+	sp.log.Debug("setting initial target node weight", "weight", w)
 	sp.curCandidate = Server{
 		Healthy: false,
 		Weight:  w,

internal/relay/target.go

@@ -41,11 +41,12 @@ type Target struct {
 // NewTarget returns a new producer relay that handles target Kafka instances.
 func NewTarget(globalCtx context.Context, cfg TargetCfg, pCfg ProducerCfg, topics Topics, m *metrics.Set, log *slog.Logger) (*Target, error) {
 	p := &Target{
-		cfg:     cfg,
-		pCfg:    pCfg,
-		ctx:     globalCtx,
-		metrics: m,
-		log:     log,
+		cfg:          cfg,
+		pCfg:         pCfg,
+		ctx:          globalCtx,
+		metrics:      m,
+		log:          log,
+		targetTopics: topics,
 
 		batch:   make([]*kgo.Record, 0, pCfg.BatchSize),
 		batchCh: make(chan *kgo.Record),