feat(indexer): ensure impl

Co-authored-by: Gaze <dev@gaze.network>

core/datasources/bitcoin_node.go

@@ -0,0 +1,22 @@
+package datasources
+
+import (
+	"context"
+
+	"github.com/gaze-network/indexer-network/core/indexers"
+	"github.com/gaze-network/indexer-network/core/types"
+)
+
+// Make sure to implement the BitcoinDatasource interface
+var _ indexers.BitcoinDatasource = (*BitcoinNodeDatasource)(nil)
+
+type BitcoinNodeDatasource struct{}
+
+func (d *BitcoinNodeDatasource) Fetch(ctx context.Context, from, to int64) ([]*types.Block, error) {
+	return nil, nil
+}
+
+func (d *BitcoinNodeDatasource) FetchAsync(ctx context.Context, from, to int64) (chan<- []*types.Block, func(), error) {
+	ctx, cancel := context.WithCancel(ctx)
+	return nil, cancel, nil
+}

core/indexers/bitcoin_indexer.go

@@ -9,6 +9,7 @@ import (
 	"github.com/btcsuite/btcd/rpcclient"
 	"github.com/cockroachdb/errors"
 	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/core"
 	"github.com/gaze-network/indexer-network/core/types"
 	"github.com/gaze-network/indexer-network/pkg/logger"
 )
@@ -18,6 +19,9 @@ type (
 	BitcoinDatasource Datasource[*types.Block]
 )
 
+// Make sure to implement the IndexerWorker interface
+var _ core.IndexerWorker = (*BitcoinIndexer)(nil)
+
 // BitcoinIndexer is the indexer for sync Bitcoin data to the database.
 type BitcoinIndexer struct {
 	Processor    BitcoinProcessor