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// Copyright 2020 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package kingpinflag
import (
"runtime"
"github.com/prometheus/exporter-toolkit/web"
"gopkg.in/alecthomas/kingpin.v2"
)
type flagGroup interface {
Flag(string, string) *kingpin.FlagClause
}
var _ flagGroup = &kingpin.Application{}
// AddFlags adds the flags used by this package to the Kingpin application or CmdClause.
// To use the default Kingpin application, call
// AddFlags(kingpin.CommandLine, ":portNum") where portNum is the default port.
func AddFlags(a flagGroup, defaultAddress string) *web.FlagConfig {
systemdSocket := func() *bool { b := false; return &b }() // Socket activation only available on Linux
if runtime.GOOS == "linux" {
systemdSocket = a.Flag(
"web.systemd-socket",
"Use systemd socket activation listeners instead of port listeners (Linux only).",
).Bool()
}
flags := web.FlagConfig{
WebListenAddresses: a.Flag(
"web.listen-address",
"Addresses on which to expose metrics and web interface. Repeatable for multiple addresses. Examples: `:9100` or `[::1]:9100` for http, `vsock://:9100` for vsock",
).Default(defaultAddress).HintOptions(defaultAddress).Strings(),
WebSystemdSocket: systemdSocket,
WebConfigFile: a.Flag(
"web.config.file",
"Path to configuration file that can enable TLS or authentication. See: https://github.com/prometheus/exporter-toolkit/blob/master/docs/web-configuration.md",
).Default("").String(),
}
return &flags
}
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