Change transformer.Execute to single header

libraries/shared/watcher.go

@@ -74,7 +74,7 @@ func (watcher *Watcher) Execute() error {
 			// TODO delegate log chunks to respective transformers
 			// Need to get the transformer name... :/
 			logChunk := chunkedLogs["transformerName"]
-			err = transformer.Execute(logChunk, missingHeaders)
+			err = transformer.Execute(logChunk, header)
 		}
 	}
 	return err

pkg/transformers/factories/log_note_transformer.go

@@ -34,10 +34,9 @@ func (transformer LogNoteTransformer) NewLogNoteTransformer(db *postgres.DB) sha
 	return transformer
 }
 
-func (transformer LogNoteTransformer) Execute(logs []types.Log, missingHeaders []core.Header) error {
+func (transformer LogNoteTransformer) Execute(logs []types.Log, header core.Header) error {
 	transformerName := transformer.Config.TransformerName
 
-	for _, header := range missingHeaders {
 	// No matching logs, mark the header as checked for this type of logs
 	if len(logs) < 1 {
 		err := transformer.Repository.MarkHeaderChecked(header.Id)
@@ -45,8 +44,6 @@ func (transformer LogNoteTransformer) Execute(logs []types.Log, missingHeaders [
 			log.Printf("Error marking header as checked in %v: %v", transformerName, err)
 			return err
 		}
-			// Continue with the next header; nothing to persist
-			continue
 	}
 
 	models, err := transformer.Converter.ToModels(logs)
@@ -60,6 +57,5 @@ func (transformer LogNoteTransformer) Execute(logs []types.Log, missingHeaders [
 		log.Printf("Error persisting %v record: %v", transformerName, err)
 		return err
 	}
-	}
 	return nil
 }

pkg/transformers/factories/transformer.go

@@ -34,19 +34,16 @@ func (transformer Transformer) NewTransformer(db *postgres.DB) shared.Transforme
 	return transformer
 }
 
-func (transformer Transformer) Execute(logs []types.Log, missingHeaders []core.Header) error {
+func (transformer Transformer) Execute(logs []types.Log, header core.Header) error {
 	transformerName := transformer.Config.TransformerName
 	config := transformer.Config
 
-	for _, header := range missingHeaders {
 	if len(logs) < 1 {
 		err := transformer.Repository.MarkHeaderChecked(header.Id)
 		if err != nil {
 			log.Printf("Error marking header as checked in %v: %v", transformerName, err)
 			return err
 		}
-
-			continue
 	}
 
 	entities, err := transformer.Converter.ToEntities(config.ContractAbi, logs)
@@ -67,7 +64,5 @@ func (transformer Transformer) Execute(logs []types.Log, missingHeaders []core.H
 		return err
 	}
 
-	}
-
 	return nil
 }

pkg/transformers/shared/transformer.go

@@ -23,7 +23,7 @@ import (
 )
 
 type Transformer interface {
-	Execute(logs []types.Log, missingHeaders []core.Header) error
+	Execute(logs []types.Log, header core.Header) error
 }
 
 type TransformerInitializer func(db *postgres.DB) Transformer