61 lines
1.5 KiB
Go
61 lines
1.5 KiB
Go
package proxy
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import (
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"context"
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"fmt"
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"github.com/centrifugal/centrifugo/v6/internal/proxyproto"
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"google.golang.org/grpc"
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)
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// GRPCSubscribeProxy ...
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type GRPCSubscribeProxy struct {
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config Config
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client proxyproto.CentrifugoProxyClient
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}
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var _ SubscribeProxy = (*GRPCSubscribeProxy)(nil)
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// NewGRPCSubscribeProxy ...
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func NewGRPCSubscribeProxy(name string, p Config) (*GRPCSubscribeProxy, error) {
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host, err := getGrpcHost(p.Endpoint)
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if err != nil {
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return nil, fmt.Errorf("error getting grpc host: %v", err)
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}
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dialOpts, err := getDialOpts(name, p)
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if err != nil {
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return nil, fmt.Errorf("error creating GRPC dial options: %v", err)
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}
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conn, err := grpc.NewClient(host, dialOpts...)
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if err != nil {
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return nil, fmt.Errorf("error connecting to GRPC proxy server: %v", err)
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}
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return &GRPCSubscribeProxy{
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config: p,
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client: proxyproto.NewCentrifugoProxyClient(conn),
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}, nil
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}
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// ProxySubscribe proxies Subscribe to application backend.
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func (p *GRPCSubscribeProxy) ProxySubscribe(ctx context.Context, req *proxyproto.SubscribeRequest) (*proxyproto.SubscribeResponse, error) {
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ctx, cancel := context.WithTimeout(ctx, p.config.Timeout.ToDuration())
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defer cancel()
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return p.client.Subscribe(grpcRequestContext(ctx, p.config), req)
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}
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// Protocol ...
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func (p *GRPCSubscribeProxy) Protocol() string {
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return "grpc"
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}
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// UseBase64 ...
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func (p *GRPCSubscribeProxy) UseBase64() bool {
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return p.config.BinaryEncoding
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}
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// IncludeMeta ...
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func (p *GRPCSubscribeProxy) IncludeMeta() bool {
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return p.config.IncludeConnectionMeta
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}
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