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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2016 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package client
import (
"bytes"
"encoding/json"
"fmt"
"net/url"
"time"
)
// A Change is a modification to the system state.
type Change struct {
ID string `json:"id"`
Kind string `json:"kind"`
Summary string `json:"summary"`
Status string `json:"status"`
Tasks []*Task `json:"tasks,omitempty"`
Ready bool `json:"ready"`
Err string `json:"err,omitempty"`
SpawnTime time.Time `json:"spawn-time,omitzero"`
ReadyTime time.Time `json:"ready-time,omitzero"`
data map[string]*json.RawMessage
}
var ErrNoData = fmt.Errorf("data entry not found")
// Get unmarshals into value the kind-specific data with the provided key.
func (c *Change) Get(key string, value any) error {
raw := c.data[key]
if raw == nil {
return ErrNoData
}
return json.Unmarshal([]byte(*raw), value)
}
// A Task is an operation done to change the system's state.
type Task struct {
ID string `json:"id"`
Kind string `json:"kind"`
Summary string `json:"summary"`
Status string `json:"status"`
Log []string `json:"log,omitempty"`
Progress TaskProgress `json:"progress"`
SpawnTime time.Time `json:"spawn-time,omitzero"`
ReadyTime time.Time `json:"ready-time,omitzero"`
}
type TaskProgress struct {
Label string `json:"label"`
Done int `json:"done"`
Total int `json:"total"`
}
type changeAndData struct {
Change
Data map[string]*json.RawMessage `json:"data"`
}
// Change fetches information about a Change given its ID.
func (client *Client) Change(id string) (*Change, error) {
var chgd changeAndData
_, err := client.doSync("GET", "/v2/changes/"+id, nil, nil, nil, &chgd)
if err != nil {
return nil, err
}
chgd.Change.data = chgd.Data
return &chgd.Change, nil
}
// Abort attempts to abort a change that is in not yet ready.
func (client *Client) Abort(id string) (*Change, error) {
var postData struct {
Action string `json:"action"`
}
postData.Action = "abort"
var body bytes.Buffer
if err := json.NewEncoder(&body).Encode(postData); err != nil {
return nil, err
}
var chg Change
if _, err := client.doSync("POST", "/v2/changes/"+id, nil, nil, &body, &chg); err != nil {
return nil, err
}
return &chg, nil
}
type ChangeSelector uint8
func (c ChangeSelector) String() string {
switch c {
case ChangesInProgress:
return "in-progress"
case ChangesReady:
return "ready"
case ChangesAll:
return "all"
}
panic(fmt.Sprintf("unknown ChangeSelector %d", c))
}
const (
ChangesInProgress ChangeSelector = 1 << iota
ChangesReady
ChangesAll = ChangesReady | ChangesInProgress
)
type ChangesOptions struct {
SnapName string // if empty, no filtering by name is done
Selector ChangeSelector
}
func (client *Client) Changes(opts *ChangesOptions) ([]*Change, error) {
query := url.Values{}
if opts != nil {
if opts.Selector != 0 {
query.Set("select", opts.Selector.String())
}
if opts.SnapName != "" {
query.Set("for", opts.SnapName)
}
}
var chgds []changeAndData
_, err := client.doSync("GET", "/v2/changes", query, nil, nil, &chgds)
if err != nil {
return nil, err
}
var chgs []*Change
for i := range chgds {
chgd := &chgds[i]
chgd.Change.data = chgd.Data
chgs = append(chgs, &chgd.Change)
}
return chgs, err
}
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