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split out separate main_flags.go file
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| // Copyright (c) 2014 Couchbase, Inc. | ||
| // 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 main | ||
|
|
||
| import ( | ||
| "flag" | ||
| "fmt" | ||
| "os" | ||
| "path" | ||
| "sort" | ||
| "strings" | ||
| ) | ||
|
|
||
| type Flags struct { | ||
| BindAddr string | ||
| DataDir string | ||
| Help bool | ||
| LogFlags string | ||
| StaticDir string | ||
| StaticETag string | ||
| Server string | ||
| Tags string | ||
| Container string | ||
| Version bool | ||
| Weight int | ||
| Register string | ||
| CfgConnect string | ||
| } | ||
|
|
||
| var flags Flags | ||
| var flagAliases map[string][]string | ||
|
|
||
| func init() { | ||
| flagAliases = initFlags(&flags) | ||
| } | ||
|
|
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| func initFlags(flags *Flags) map[string][]string { | ||
| flagAliases := map[string][]string{} // main flag name => all aliases. | ||
|
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| s := func(v *string, names []string, | ||
| defaultVal, usage string) { // String cmd-line param. | ||
| for _, name := range names { | ||
| flag.StringVar(v, name, defaultVal, usage) | ||
| } | ||
| flagAliases[names[0]] = names | ||
| } | ||
|
|
||
| i := func(v *int, names []string, | ||
| defaultVal int, usage string) { // Integer cmd-line param. | ||
| for _, name := range names { | ||
| flag.IntVar(v, name, defaultVal, usage) | ||
| } | ||
| flagAliases[names[0]] = names | ||
| } | ||
|
|
||
| b := func(v *bool, names []string, | ||
| defaultVal bool, usage string) { // Bool cmd-line param. | ||
| for _, name := range names { | ||
| flag.BoolVar(v, name, defaultVal, usage) | ||
| } | ||
| flagAliases[names[0]] = names | ||
| } | ||
|
|
||
| s(&flags.BindAddr, | ||
| []string{"bindAddr"}, "localhost:8095", | ||
| "http listen address:port") | ||
| s(&flags.DataDir, | ||
| []string{"dataDir", "data"}, "data", | ||
| "directory path where index data and"+ | ||
| "\nlocal configuration files will be stored") | ||
| b(&flags.Help, | ||
| []string{"help", "?", "H", "h"}, false, | ||
| "print this usage message and exit") | ||
| s(&flags.LogFlags, | ||
| []string{"logFlags"}, "", | ||
| "comma-separated logging control flags") | ||
| s(&flags.StaticDir, | ||
| []string{"staticDir"}, "static", | ||
| "directory for static web UI content") | ||
| s(&flags.StaticETag, | ||
| []string{"staticETag"}, "", | ||
| "static etag value") | ||
| s(&flags.Server, | ||
| []string{"server"}, "", | ||
| "url to datasource server;"+ | ||
| "\nexample for couchbase: http://localhost:8091") | ||
| s(&flags.Tags, | ||
| []string{"tags"}, "", | ||
| "comma-separated list of tags (or roles) for this node") | ||
| s(&flags.Container, | ||
| []string{"container"}, "", | ||
| "slash separated path of parent containers for this node,"+ | ||
| "\nfor shelf/rack/row/zone awareness") | ||
| b(&flags.Version, | ||
| []string{"version", "v"}, false, | ||
| "print version string and exit") | ||
| i(&flags.Weight, | ||
| []string{"weight"}, 1, | ||
| "weight of this node (a more capable node has higher weight)") | ||
| s(&flags.Register, | ||
| []string{"register"}, "wanted", | ||
| "register this node as wanted, wantedForce,"+ | ||
| "\nknown, knownForce, unwanted, unknown or unchanged") | ||
| s(&flags.CfgConnect, | ||
| []string{"cfgConnect", "cfg"}, "simple", | ||
| "connection string/info to configuration provider") | ||
|
|
||
| flag.Usage = func() { | ||
| if !flags.Help { | ||
| return | ||
| } | ||
|
|
||
| base := path.Base(os.Args[0]) | ||
|
|
||
| fmt.Fprintf(os.Stderr, | ||
| "%s: couchbase full-text server\n\n", base) | ||
| fmt.Fprintf(os.Stderr, "more information is available at:\n"+ | ||
| " http://github.com/couchbaselabs/cbft\n\n") | ||
| fmt.Fprintf(os.Stderr, "usage:\n %s [flags]\n\n", base) | ||
| fmt.Fprintf(os.Stderr, "flags:\n") | ||
|
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| flagsByName := map[string]*flag.Flag{} | ||
| flag.VisitAll(func(f *flag.Flag) { | ||
| flagsByName[f.Name] = f | ||
| }) | ||
|
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| flags := []string(nil) | ||
| for name := range flagAliases { | ||
| flags = append(flags, name) | ||
| } | ||
| sort.Strings(flags) | ||
|
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||
| for _, name := range flags { | ||
| aliases := flagAliases[name] | ||
| a := []string(nil) | ||
| for i := len(aliases) - 1; i >= 0; i-- { | ||
| a = append(a, aliases[i]) | ||
| } | ||
| f := flagsByName[name] | ||
| fmt.Fprintf(os.Stderr, " -%s=%q\n", | ||
| strings.Join(a, ", -"), f.Value) | ||
| fmt.Fprintf(os.Stderr, " %s\n", | ||
| strings.Join(strings.Split(f.Usage, "\n"), | ||
| "\n ")) | ||
| } | ||
| } | ||
|
|
||
| return flagAliases | ||
| } |