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grpc.go
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grpc.go
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// Copyright 2020 Lingfei Kong <colin404@foxmail.com>. All rights reserved.
// Use of this source code is governed by a MIT style
// license that can be found in the LICENSE file.
package options
import (
"fmt"
"github.com/spf13/pflag"
)
// GRPCOptions are for creating an unauthenticated, unauthorized, insecure port.
// No one should be using these anymore.
type GRPCOptions struct {
BindAddress string `json:"bind-address" mapstructure:"bind-address"`
BindPort int `json:"bind-port" mapstructure:"bind-port"`
MaxMsgSize int `json:"max-msg-size" mapstructure:"max-msg-size"`
}
// NewGRPCOptions is for creating an unauthenticated, unauthorized, insecure port.
// No one should be using these anymore.
func NewGRPCOptions() *GRPCOptions {
return &GRPCOptions{
BindAddress: "0.0.0.0",
BindPort: 8081,
MaxMsgSize: 4 * 1024 * 1024,
}
}
// Validate is used to parse and validate the parameters entered by the user at
// the command line when the program starts.
func (s *GRPCOptions) Validate() []error {
var errors []error
if s.BindPort < 0 || s.BindPort > 65535 {
errors = append(
errors,
fmt.Errorf(
"--insecure-port %v must be between 0 and 65535, inclusive. 0 for turning off insecure (HTTP) port",
s.BindPort,
),
)
}
return errors
}
// AddFlags adds flags related to features for a specific api server to the
// specified FlagSet.
func (s *GRPCOptions) AddFlags(fs *pflag.FlagSet) {
fs.StringVar(&s.BindAddress, "grpc.bind-address", s.BindAddress, ""+
"The IP address on which to serve the --grpc.bind-port(set to 0.0.0.0 for all IPv4 interfaces and :: for all IPv6 interfaces).")
fs.IntVar(&s.BindPort, "grpc.bind-port", s.BindPort, ""+
"The port on which to serve unsecured, unauthenticated grpc access. It is assumed "+
"that firewall rules are set up such that this port is not reachable from outside of "+
"the deployed machine and that port 443 on the iam public address is proxied to this "+
"port. This is performed by nginx in the default setup. Set to zero to disable.")
fs.IntVar(&s.MaxMsgSize, "grpc.max-msg-size", s.MaxMsgSize, "gRPC max message size.")
}