// VulcanizeDB // Copyright © 2019 Vulcanize // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU Affero General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU Affero General Public License for more details. // You should have received a copy of the GNU Affero General Public License // along with this program. If not, see . // Streamer is used by watchers to stream eth data from a vulcanizedb super node package streamer import ( "github.com/ethereum/go-ethereum/rpc" "github.com/vulcanize/vulcanizedb/pkg/super_node" "github.com/vulcanize/vulcanizedb/pkg/eth/core" ) // ISuperNodeStreamer is the interface for streaming SuperNodePayloads from a vulcanizeDB super node type ISuperNodeStreamer interface { Stream(payloadChan chan super_node.Payload, params super_node.SubscriptionSettings) (*rpc.ClientSubscription, error) } // SuperNodeStreamer is the underlying struct for the ISuperNodeStreamer interface type SuperNodeStreamer struct { Client core.RPCClient } // NewSuperNodeStreamer creates a pointer to a new SuperNodeStreamer which satisfies the ISuperNodeStreamer interface func NewSuperNodeStreamer(client core.RPCClient) *SuperNodeStreamer { return &SuperNodeStreamer{ Client: client, } } // Stream is the main loop for subscribing to data from a vulcanizedb super node func (sds *SuperNodeStreamer) Stream(payloadChan chan super_node.Payload, params super_node.SubscriptionSettings) (*rpc.ClientSubscription, error) { return sds.Client.Subscribe("vdb", payloadChan, "stream", params) }