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