mirror of https://github.com/hashicorp/consul
80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
// Copyright (c) HashiCorp, Inc.
|
|
// SPDX-License-Identifier: BUSL-1.1
|
|
|
|
package proxy
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/hashicorp/consul/api"
|
|
"github.com/hashicorp/consul/connect/proxy"
|
|
)
|
|
|
|
// FlagUpstreams implements the flag.Value interface and allows specifying
|
|
// the -upstream flag multiple times and keeping track of the name of the
|
|
// upstream and the local port.
|
|
//
|
|
// The syntax of the value is "name:addr" where addr can be "port" or
|
|
// "host:port". Examples: "db:8181", "db:127.0.0.10:8282", etc.
|
|
//
|
|
// This would need to be extended for Unix Domain Sockets; how does this get handled
|
|
// addr: path & path:mode is ambigous; maybe path alone could be sorted by checking for a numeric port
|
|
// but iffy
|
|
type FlagUpstreams map[string]proxy.UpstreamConfig
|
|
|
|
func (f *FlagUpstreams) String() string {
|
|
return fmt.Sprintf("%v", *f)
|
|
}
|
|
|
|
func (f *FlagUpstreams) Set(value string) error {
|
|
idx := strings.Index(value, ":")
|
|
if idx == -1 {
|
|
return fmt.Errorf("Upstream value should be name:addr in %q", value)
|
|
}
|
|
|
|
addr := ""
|
|
name := value[:idx]
|
|
portRaw := value[idx+1:]
|
|
if idx := strings.Index(portRaw, ":"); idx != -1 {
|
|
addr = portRaw[:idx]
|
|
portRaw = portRaw[idx+1:]
|
|
}
|
|
|
|
destinationType := "service"
|
|
if idx := strings.Index(name, "."); idx != -1 {
|
|
typ := name[idx+1:]
|
|
name = name[:idx]
|
|
switch typ {
|
|
case "", "service":
|
|
destinationType = "service"
|
|
|
|
case "query":
|
|
destinationType = "prepared_query"
|
|
|
|
default:
|
|
return fmt.Errorf(
|
|
"Upstream type must be blank, 'service', or 'query'. Got: %q", typ)
|
|
}
|
|
}
|
|
|
|
port, err := strconv.ParseInt(portRaw, 0, 0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if *f == nil {
|
|
*f = make(map[string]proxy.UpstreamConfig)
|
|
}
|
|
|
|
(*f)[name] = proxy.UpstreamConfig{
|
|
LocalBindAddress: addr,
|
|
LocalBindPort: int(port),
|
|
DestinationName: name,
|
|
DestinationType: api.UpstreamDestType(destinationType),
|
|
}
|
|
|
|
return nil
|
|
}
|