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Adding support for custom grpc dial options in Go SDK #1043

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Oct 23, 2020
Merged

Adding support for custom grpc dial options in Go SDK #1043

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14 changes: 12 additions & 2 deletions sdk/go/client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@ import (
"context"
"crypto/x509"
"fmt"

"github.com/feast-dev/feast/sdk/go/protos/feast/serving"
"github.com/opentracing/opentracing-go"
"go.opencensus.io/plugin/ocgrpc"
Expand Down Expand Up @@ -43,16 +44,25 @@ func NewGrpcClient(host string, port int) (*GrpcClient, error) {
})
}

// NewAuthGrpcClient constructs a secure client that uses security features (ie authentication).
// NewSecureGrpcClient constructs a secure client that uses security features (ie authentication).
// host - hostname of the serving host/instance to connect to.
// port - post of the host to service host/instancf to connect to.
// securityConfig - security config configures client security.
func NewSecureGrpcClient(host string, port int, security SecurityConfig) (*GrpcClient, error) {
return NewSecureGrpcClientWithDialOptions(host, port, security)
}

// NewSecureGrpcClientWithDialOptions constructs a secure client that uses security features (ie authentication) along with custom grpc dial options.
// host - hostname of the serving host/instance to connect to.
// port - post of the host to service host/instancf to connect to.
// securityConfig - security config configures client security.
// opts - grpc.DialOptions which should be used with this connection
func NewSecureGrpcClientWithDialOptions(host string, port int, security SecurityConfig, opts ...grpc.DialOption) (*GrpcClient, error) {
feastCli := &GrpcClient{}
adr := fmt.Sprintf("%s:%d", host, port)

// Compile grpc dial options from security config.
options := []grpc.DialOption{grpc.WithStatsHandler(&ocgrpc.ClientHandler{})}
options := append(opts, grpc.WithStatsHandler(&ocgrpc.ClientHandler{}))
// Configure client TLS.
if !security.EnableTLS {
options = append(options, grpc.WithInsecure())
Expand Down