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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| // Copyright 2023 Louis Royer and the NextMN-SRv6 contributors. All rights reserved. | ||
| // Use of this source code is governed by a MIT-style license that can be | ||
| // found in the LICENSE file. | ||
| // SPDX-License-Identifier: MIT | ||
| package tasks | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "fmt" | ||
| "net/http" | ||
| "net/netip" | ||
| ) | ||
|
|
||
| // ControllerRegistry registers and unregisters into controller | ||
| type ControllerRegistry struct { | ||
| WithState | ||
| RemoteControlURI string // URI of the controller | ||
| LocalControlURI string // URI of the router, used to control it | ||
| Locator string | ||
| Backbone netip.Addr | ||
| Resource string | ||
| } | ||
|
|
||
| // Create a new ControllerRegistry | ||
| func NewControllerRegistry(remoteControlURI string, backbone netip.Addr, locator string, localControlURI string) *ControllerRegistry { | ||
| return &ControllerRegistry{ | ||
| WithState: NewState(), | ||
| RemoteControlURI: remoteControlURI, | ||
| LocalControlURI: localControlURI, | ||
| Locator: locator, | ||
| Backbone: backbone, | ||
| Resource: "", | ||
| } | ||
| } | ||
|
|
||
| // Init | ||
| func (t *ControllerRegistry) RunInit() error { | ||
| data := map[string]string{ | ||
| "locator": t.Locator, | ||
| "backbone": t.Backbone.String(), | ||
| "control": t.LocalControlURI, | ||
| } | ||
| json_data, err := json.Marshal(data) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| // TODO: retry on timeout failure | ||
| resp, err := http.Post(t.RemoteControlURI+"/routers", "application/json", bytes.NewBuffer(json_data)) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer resp.Body.Close() | ||
| if resp.StatusCode == 400 { | ||
| return fmt.Errorf("HTTP Bad request\n") | ||
| } | ||
| if resp.StatusCode >= 500 { | ||
| return fmt.Errorf("HTTP Control Server: internal error\n") | ||
| } | ||
| if resp.StatusCode == 201 { // created | ||
| t.Resource = resp.Header.Get("Location") | ||
| } | ||
|
|
||
| t.state = true | ||
| return nil | ||
| } | ||
|
|
||
| // Exit | ||
| func (t *ControllerRegistry) RunExit() error { | ||
| // TODO: retry on timeout failure | ||
| // TODO: if Resource has scheme, don't concatenate | ||
| if t.Resource == "" { | ||
| // nothing to do | ||
| t.state = false | ||
| return nil | ||
| } | ||
| req, err := http.NewRequest("DELETE", t.RemoteControlURI+t.Resource, nil) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| client := &http.Client{} | ||
| resp, err := client.Do(req) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer resp.Body.Close() | ||
| if resp.StatusCode == 400 { | ||
| return fmt.Errorf("HTTP Bad request\n") | ||
| } | ||
| if resp.StatusCode >= 500 { | ||
| return fmt.Errorf("HTTP Control Server: internal error %v\n", resp.Body) | ||
| } | ||
| t.state = false | ||
| return nil | ||
| } |
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