ipld-eth-server/pkg/client/client.go

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// 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 <http://www.gnu.org/licenses/>.
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// Client is used by watchers to stream chain IPLD data from a vulcanizedb ipld-eth-server
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package client
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import (
"context"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/vulcanize/ipld-eth-server/v4/pkg/eth"
"github.com/vulcanize/ipld-eth-server/v4/pkg/serve"
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)
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// Client is used to subscribe to the ipld-eth-server ipld data stream
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type Client struct {
c *rpc.Client
}
// NewClient creates a new Client
func NewClient(c *rpc.Client) *Client {
return &Client{
c: c,
}
}
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// Stream is the main loop for subscribing to iplds from an ipld-eth-server server
func (c *Client) Stream(payloadChan chan serve.SubscriptionPayload, params eth.SubscriptionSettings) (*rpc.ClientSubscription, error) {
return c.c.Subscribe(context.Background(), "vdb", payloadChan, "stream", params)
}