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Add top command and remove inoperable registry
Signed-off-by: R.I.Pienaar <[email protected]>
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| // Copyright 2023 The NATS 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. | ||
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| package cli | ||
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| import ( | ||
| "fmt" | ||
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| "github.com/choria-io/fisk" | ||
| "github.com/nats-io/nats-server/v2/server" | ||
| "github.com/nats-io/natscli/top" | ||
| tu "github.com/nats-io/natscli/top/util" | ||
| ui "gopkg.in/gizak/termui.v1" | ||
| ) | ||
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| type topCmd struct { | ||
| host string | ||
| conns int | ||
| delay int | ||
| sort string | ||
| lookup bool | ||
| output string | ||
| outputDelimiter string | ||
| raw bool | ||
| maxRefresh int | ||
| showSubs bool | ||
| } | ||
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| func configureTopCommand(app commandHost) { | ||
| c := &topCmd{} | ||
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| top := app.Command("top", "Shows top-like statistic for connections on a specific server").Action(c.topAction) | ||
| top.Arg("name", "The server name to gather statistics for").Required().StringVar(&c.host) | ||
| top.Flag("conns", "Maximum number of connections to show").Default("1024").Short('n').IntVar(&c.conns) | ||
| top.Flag("interval", "Refresh interval").Default("1").Short('d').IntVar(&c.delay) | ||
| top.Flag("sort", "Sort connections by").Default("cid").EnumVar(&c.sort, "cid", "start", "subs", "pending", "msgs_to", "msgs_from", "bytes_to", "bytes_from", "last", "idle", "uptime", "stop", "reason", "rtt") | ||
| top.Flag("lookup", "Looks up client addresses in DNS").Default("false").UnNegatableBoolVar(&c.lookup) | ||
| top.Flag("output", "Saves the first snapshot to a file").Short('o').StringVar(&c.output) | ||
| top.Flag("delimiter", "Specifies a output delimiter, defaults to grid-like text").StringVar(&c.outputDelimiter) | ||
| top.Flag("raw", "Show raw bytes").Short('b').Default("false").UnNegatableBoolVar(&c.raw) | ||
| top.Flag("max-refresh", "Maximum refreshes").Short('r').Default("-1").IntVar(&c.maxRefresh) | ||
| top.Flag("subs", "Shows the subscriptions column").Default("false").UnNegatableBoolVar(&c.showSubs) | ||
| } | ||
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| func init() { | ||
| registerCommand("top", 17, configureTopCommand) | ||
| } | ||
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| func (c *topCmd) topAction(_ *fisk.ParseContext) error { | ||
| nc, _, err := prepareHelper("", natsOpts()...) | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| engine := tu.NewEngine(nc, c.host, c.conns, c.delay, opts.Trace) | ||
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| _, err = engine.Request("VARZ") | ||
| if err != nil { | ||
| return fmt.Errorf("initial test request failed: %v", err) | ||
| } | ||
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| sortOpt := server.SortOpt(c.sort) | ||
| if !sortOpt.IsValid() { | ||
| return fmt.Errorf("invalid sort option: %s", c.sort) | ||
| } | ||
| engine.SortOpt = sortOpt | ||
| engine.DisplaySubs = c.showSubs | ||
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| if c.output != "" { | ||
| return top.SaveStatsSnapshotToFile(engine, c.output, c.outputDelimiter) | ||
| } | ||
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| err = ui.Init() | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| defer ui.Close() | ||
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| go engine.MonitorStats() | ||
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| top.StartUI(engine, c.lookup, c.raw, c.maxRefresh) | ||
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| return nil | ||
| } |
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| @@ -0,0 +1,22 @@ | ||
| The MIT License (MIT) | ||
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| Copyright (c) 2015-2021 NATS Messaging System | ||
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| Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| of this software and associated documentation files (the "Software"), to deal | ||
| in the Software without restriction, including without limitation the rights | ||
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| copies of the Software, and to permit persons to whom the Software is | ||
| furnished to do so, subject to the following conditions: | ||
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| The above copyright notice and this permission notice shall be included in all | ||
| copies or substantial portions of the Software. | ||
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| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| SOFTWARE. | ||
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