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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2020 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 daemon
import (
"encoding/json"
"io"
"net/http"
"time"
"github.com/snapcore/snapd/logger"
"github.com/snapcore/snapd/overlord/auth"
)
var (
routineConsoleConfStartCmd = &Command{
Path: "/v2/internal/console-conf-start",
POST: consoleConfStartRoutine,
WriteAccess: authenticatedAccess{},
}
)
var delayTime = 20 * time.Minute
// consoleConfStartRoutineResult is the result of running the console-conf start
// routine..
type consoleConfStartRoutineResult struct {
ActiveAutoRefreshChanges []string `json:"active-auto-refreshes,omitempty"`
ActiveAutoRefreshSnaps []string `json:"active-auto-refresh-snaps,omitempty"`
}
func consoleConfStartRoutine(c *Command, r *http.Request, _ *auth.UserState) Response {
// no body expected, error if we were provided anything
defer r.Body.Close()
var routineBody struct{}
decoder := json.NewDecoder(r.Body)
if err := decoder.Decode(&routineBody); err != nil && err != io.EOF {
return BadRequest("cannot decode request body into console-conf operation: %v", err)
}
// now run the start routine first by trying to grab a lock on the refreshes
// for all snaps, which fails if there are any active changes refreshing
// snaps
st := c.d.overlord.State()
st.Lock()
defer st.Unlock()
snapAutoRefreshChanges, err := c.d.overlord.SnapManager().EnsureAutoRefreshesAreDelayed(delayTime)
if err != nil {
return InternalError(err.Error())
}
logger.Debugf("Ensured that new auto refreshes are delayed by %s to allow console-conf to run", delayTime)
if len(snapAutoRefreshChanges) == 0 {
// no changes yet, and we delayed the refresh successfully so
// console-conf is okay to run normally
return SyncResponse(&consoleConfStartRoutineResult{})
}
chgIds := make([]string, 0, len(snapAutoRefreshChanges))
snapNames := make([]string, 0)
for _, chg := range snapAutoRefreshChanges {
chgIds = append(chgIds, chg.ID())
var updatedSnaps []string
err := chg.Get("snap-names", &updatedSnaps)
if err != nil {
return InternalError(err.Error())
}
snapNames = append(snapNames, updatedSnaps...)
}
// we have changes that the client should wait for before being ready
return SyncResponse(&consoleConfStartRoutineResult{
ActiveAutoRefreshChanges: chgIds,
ActiveAutoRefreshSnaps: snapNames,
})
}
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