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package client
import (
"context"
"gitlab.com/gitlab-org/gitaly/v14/internal/gitaly/client"
"google.golang.org/grpc"
healthpb "google.golang.org/grpc/health/grpc_health_v1"
)
// DefaultDialOpts hold the default DialOptions for connection to Gitaly over UNIX-socket
var DefaultDialOpts = []grpc.DialOption{}
// DialContext dials the Gitaly at the given address with the provided options. Valid address formats are
// 'unix:<socket path>' for Unix sockets, 'tcp://<host:port>' for insecure TCP connections and 'tls://<host:port>'
// for TCP+TLS connections.
//
// The returned ClientConns are configured with tracing and correlation id interceptors to ensure they are propagated
// correctly. They're also configured to send Keepalives with settings matching what Gitaly expects.
//
// connOpts should not contain `grpc.WithInsecure` as DialContext determines whether it is needed or not from the
// scheme. `grpc.TransportCredentials` should not be provided either as those are handled internally as well.
func DialContext(ctx context.Context, rawAddress string, connOpts []grpc.DialOption) (*grpc.ClientConn, error) {
return client.Dial(ctx, rawAddress, connOpts, nil)
}
// Dial calls DialContext with the provided arguments and context.Background. Refer to DialContext's documentation
// for details.
func Dial(rawAddress string, connOpts []grpc.DialOption) (*grpc.ClientConn, error) {
return DialContext(context.Background(), rawAddress, connOpts)
}
// FailOnNonTempDialError helps to identify if remote listener is ready to accept new connections.
func FailOnNonTempDialError() []grpc.DialOption {
return []grpc.DialOption{
grpc.WithBlock(),
grpc.FailOnNonTempDialError(true),
}
}
// HealthCheckDialer uses provided dialer as an actual dialer, but issues a health check request to the remote
// to verify the connection was set properly and could be used with no issues.
func HealthCheckDialer(base Dialer) Dialer {
return func(ctx context.Context, address string, dialOptions []grpc.DialOption) (*grpc.ClientConn, error) {
cc, err := base(ctx, address, dialOptions)
if err != nil {
return nil, err
}
if _, err := healthpb.NewHealthClient(cc).Check(ctx, &healthpb.HealthCheckRequest{}); err != nil {
cc.Close()
return nil, err
}
return cc, nil
}
}
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