goimports + streamSubscribe command for raw access to the seed node data

pkg/config/subscription.go

@@ -0,0 +1,43 @@
+package config
+
+// Subscription config is used by a subscribing transformer to specifiy which data to receive from the seed node
+type Subscription struct {
+	BackFill      bool
+	BackFillOnly  bool
+	StartingBlock int64
+	EndingBlock   int64 // set to 0 or a negative value to have no ending block
+	HeaderFilter  HeaderFilter
+	TrxFilter TrxFilter
+	ReceiptFilter ReceiptFilter
+	StateFilter StateFilter
+	StorageFilter StorageFilter
+}
+
+type HeaderFilter struct {
+	Off bool
+	FinalOnly bool
+}
+
+type TrxFilter struct {
+	Off bool
+	Src []string
+	Dst []string
+}
+
+type ReceiptFilter struct {
+	Off     bool
+	Topic0s []string
+}
+
+type StateFilter struct {
+	Off               bool
+	Addresses         []string // is converted to state key by taking its keccak256 hash
+	IntermediateNodes bool
+}
+
+type StorageFilter struct {
+	Off               bool
+	Addresses         []string
+	StorageKeys       []string
+	IntermediateNodes bool
+}

pkg/config/subscription_test.go

@@ -0,0 +1 @@
+package config