| // Copyright 2018 The LUCI 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 lib |
| |
| import ( |
| "context" |
| "encoding/json" |
| "fmt" |
| "io/ioutil" |
| "os" |
| |
| "google.golang.org/api/googleapi" |
| |
| "github.com/maruel/subcommands" |
| |
| "go.chromium.org/luci/common/errors" |
| "go.chromium.org/luci/common/flag" |
| "go.chromium.org/luci/common/flag/stringmapflag" |
| "go.chromium.org/luci/common/system/signals" |
| ) |
| |
| // CmdBots returns an object for the `bots` subcommand. |
| func CmdBots(authFlags AuthFlags) *subcommands.Command { |
| return &subcommands.Command{ |
| UsageLine: "bots <options>", |
| ShortDesc: "lists bots", |
| LongDesc: "List bots matching the given options.", |
| CommandRun: func() subcommands.CommandRun { |
| r := &botsRun{} |
| r.Init(authFlags) |
| return r |
| }, |
| } |
| } |
| |
| type botsRun struct { |
| commonFlags |
| outfile string |
| dimensions stringmapflag.Value |
| fields []googleapi.Field |
| count bool |
| } |
| |
| func (b *botsRun) Init(authFlags AuthFlags) { |
| b.commonFlags.Init(authFlags) |
| b.Flags.StringVar(&b.outfile, "json", "", "Path to output JSON results. Implies quiet.") |
| b.Flags.Var(&b.dimensions, "dimension", "Dimension to select the right kind of bot. In the form of `key=value`") |
| b.Flags.Var(flag.FieldSlice(&b.fields), "field", "Fields to include in a partial response. May be repeated.") |
| b.Flags.BoolVar(&b.count, "count", false, "Report the count of bots instead of listing them.") |
| } |
| |
| func (b *botsRun) Parse() error { |
| if err := b.commonFlags.Parse(); err != nil { |
| return err |
| } |
| if b.defaultFlags.Quiet && b.outfile == "" { |
| return errors.Reason("specify -json when using -quiet").Err() |
| } |
| if b.outfile != "" { |
| b.defaultFlags.Quiet = true |
| } |
| if b.count && len(b.fields) > 0 { |
| return errors.Reason("-field cannot be used with -count").Err() |
| } |
| return nil |
| } |
| |
| func (b *botsRun) main(_ subcommands.Application) error { |
| ctx, cancel := context.WithCancel(b.defaultFlags.MakeLoggingContext(os.Stderr)) |
| defer cancel() |
| defer signals.HandleInterrupt(cancel)() |
| service, err := b.createSwarmingClient(ctx) |
| if err != nil { |
| return err |
| } |
| |
| dims := make([]string, 0, len(b.dimensions)) |
| for k, v := range b.dimensions { |
| dims = append(dims, k+":"+v) |
| } |
| |
| var data interface{} |
| if b.count { |
| data, err = service.CountBots(ctx, dims...) |
| if err != nil { |
| return err |
| } |
| } else { |
| data, err = service.ListBots(ctx, dims, b.fields) |
| if err != nil { |
| return err |
| } |
| } |
| |
| if !b.defaultFlags.Quiet { |
| j, err := json.MarshalIndent(data, "", " ") |
| if err != nil { |
| return err |
| } |
| fmt.Printf("%s\n", j) |
| } |
| if b.outfile != "" { |
| j, err := json.Marshal(data) |
| if err != nil { |
| return err |
| } |
| if err := ioutil.WriteFile(b.outfile, j, 0644); err != nil { |
| return err |
| } |
| } |
| return nil |
| } |
| |
| func (b *botsRun) Run(a subcommands.Application, _ []string, _ subcommands.Env) int { |
| if err := b.Parse(); err != nil { |
| fmt.Fprintf(a.GetErr(), "%s: %s\n", a.GetName(), err) |
| return 1 |
| } |
| if err := b.main(a); err != nil { |
| fmt.Fprintf(a.GetErr(), "%s: %s\n", a.GetName(), err) |
| return 1 |
| } |
| return 0 |
| } |