Add Verified Data pages + obscuro Info endpoint (#1476)

* Add Verified Data pages + obscuro Info endpoint

* making sure the host only calls the config once

* Changing data struct names

go/common/enclave.go

@@ -125,6 +125,8 @@ type Enclave interface {
 	StreamL2Updates() (chan StreamL2UpdatesResponse, func())
 	// DebugEventLogRelevancy returns the logs of a transaction
 	DebugEventLogRelevancy(hash gethcommon.Hash) (json.RawMessage, SystemError)
+
+	Config() (*ObscuroEnclaveInfo, SystemError)
 }
 
 // EnclaveScan represents the methods that are used for data scanning in the enclave
@@ -151,3 +153,9 @@ type ProducedSecretResponse struct {
 	RequesterID gethcommon.Address
 	HostAddress string
 }
+
+// ObscuroEnclaveInfo contains the data to return on Config requests
+type ObscuroEnclaveInfo struct {
+	SequencerID       gethcommon.Address
+	MessageBusAddress gethcommon.Address
+}

go/common/host/host.go

@@ -28,6 +28,9 @@ type Host interface {
 
 	// HealthCheck returns the health status of the host + enclave + db
 	HealthCheck() (*HealthCheck, error)
+
+	// ObscuroConfig returns the info of the Obscuro network
+	ObscuroConfig() (*common.ObscuroNetworkInfo, error)
 }
 
 type BlockStream struct {

go/common/query_types.go

@@ -82,3 +82,10 @@ type PrivateCustomQueryListTransactions struct {
 	Address    common.Address  `json:"address"`
 	Pagination QueryPagination `json:"pagination"`
 }
+
+type ObscuroNetworkInfo struct {
+	ManagementContractAddress common.Address
+	L1StartHash               common.Hash
+	SequencerID               common.Address
+	MessageBusAddress         common.Address
+}