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appsender_client.go
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/
appsender_client.go
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// Copyright (C) 2019-2022, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package appsender
import (
"context"
"github.com/MetalBlockchain/metalgo/ids"
"github.com/MetalBlockchain/metalgo/snow/engine/common"
"github.com/MetalBlockchain/metalgo/utils/set"
appsenderpb "github.com/MetalBlockchain/metalgo/proto/pb/appsender"
)
var _ common.AppSender = (*Client)(nil)
type Client struct {
client appsenderpb.AppSenderClient
}
// NewClient returns a client that is connected to a remote AppSender.
func NewClient(client appsenderpb.AppSenderClient) *Client {
return &Client{client: client}
}
func (c *Client) SendCrossChainAppRequest(ctx context.Context, chainID ids.ID, requestID uint32, appRequestBytes []byte) error {
_, err := c.client.SendCrossChainAppRequest(
ctx,
&appsenderpb.SendCrossChainAppRequestMsg{
ChainId: chainID[:],
RequestId: requestID,
Request: appRequestBytes,
},
)
return err
}
func (c *Client) SendCrossChainAppResponse(ctx context.Context, chainID ids.ID, requestID uint32, appResponseBytes []byte) error {
_, err := c.client.SendCrossChainAppResponse(
ctx,
&appsenderpb.SendCrossChainAppResponseMsg{
ChainId: chainID[:],
RequestId: requestID,
Response: appResponseBytes,
},
)
return err
}
func (c *Client) SendAppRequest(ctx context.Context, nodeIDs set.Set[ids.NodeID], requestID uint32, request []byte) error {
nodeIDsBytes := make([][]byte, nodeIDs.Len())
i := 0
for nodeID := range nodeIDs {
nodeID := nodeID // Prevent overwrite in next iteration
nodeIDsBytes[i] = nodeID[:]
i++
}
_, err := c.client.SendAppRequest(
ctx,
&appsenderpb.SendAppRequestMsg{
NodeIds: nodeIDsBytes,
RequestId: requestID,
Request: request,
},
)
return err
}
func (c *Client) SendAppResponse(ctx context.Context, nodeID ids.NodeID, requestID uint32, response []byte) error {
_, err := c.client.SendAppResponse(
ctx,
&appsenderpb.SendAppResponseMsg{
NodeId: nodeID[:],
RequestId: requestID,
Response: response,
},
)
return err
}
func (c *Client) SendAppGossip(ctx context.Context, msg []byte) error {
_, err := c.client.SendAppGossip(
ctx,
&appsenderpb.SendAppGossipMsg{
Msg: msg,
},
)
return err
}
func (c *Client) SendAppGossipSpecific(ctx context.Context, nodeIDs set.Set[ids.NodeID], msg []byte) error {
nodeIDsBytes := make([][]byte, nodeIDs.Len())
i := 0
for nodeID := range nodeIDs {
nodeID := nodeID // Prevent overwrite in next iteration
nodeIDsBytes[i] = nodeID[:]
i++
}
_, err := c.client.SendAppGossipSpecific(
ctx,
&appsenderpb.SendAppGossipSpecificMsg{
NodeIds: nodeIDsBytes,
Msg: msg,
},
)
return err
}