63 lines
1.4 KiB
Go
63 lines
1.4 KiB
Go
package session
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import (
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"net"
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"time"
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"github.com/Sirupsen/logrus"
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"github.com/pkg/errors"
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"golang.org/x/net/context"
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"golang.org/x/net/http2"
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"google.golang.org/grpc"
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"google.golang.org/grpc/health/grpc_health_v1"
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)
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func serve(ctx context.Context, grpcServer *grpc.Server, conn net.Conn) {
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go func() {
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<-ctx.Done()
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conn.Close()
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}()
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logrus.Debugf("serving grpc connection")
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(&http2.Server{}).ServeConn(conn, &http2.ServeConnOpts{Handler: grpcServer})
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}
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func grpcClientConn(ctx context.Context, conn net.Conn) (context.Context, *grpc.ClientConn, error) {
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dialOpt := grpc.WithDialer(func(addr string, d time.Duration) (net.Conn, error) {
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return conn, nil
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})
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cc, err := grpc.DialContext(ctx, "", dialOpt, grpc.WithInsecure())
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if err != nil {
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return nil, nil, errors.Wrap(err, "failed to create grpc client")
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}
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ctx, cancel := context.WithCancel(ctx)
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go monitorHealth(ctx, cc, cancel)
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return ctx, cc, nil
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}
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func monitorHealth(ctx context.Context, cc *grpc.ClientConn, cancelConn func()) {
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defer cancelConn()
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defer cc.Close()
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ticker := time.NewTicker(500 * time.Millisecond)
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defer ticker.Stop()
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healthClient := grpc_health_v1.NewHealthClient(cc)
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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<-ticker.C
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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_, err := healthClient.Check(ctx, &grpc_health_v1.HealthCheckRequest{})
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cancel()
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if err != nil {
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return
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}
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}
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}
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}
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