/
change.go
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/
change.go
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/*
Copyright (c) 2019 Stellar Project
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:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
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.
*/
package agent
import (
"context"
"github.com/containerd/containerd"
"github.com/containerd/containerd/containers"
"github.com/containerd/containerd/errdefs"
v1 "github.com/stellarproject/terraos/api/v1/orbit"
"github.com/stellarproject/terraos/opts"
"github.com/stellarproject/terraos/pkg/flux"
)
type change interface {
update(context.Context, containerd.Container) error
}
type imageUpdateChange struct {
ref string
client *containerd.Client
}
func (c *imageUpdateChange) update(ctx context.Context, container containerd.Container) error {
image, err := c.client.Pull(ctx, c.ref, containerd.WithPullUnpack, withPlainRemote(c.ref))
if err != nil {
return err
}
return container.Update(ctx, flux.WithUpgrade(image))
}
type configChange struct {
c *v1.Container
client *containerd.Client
config *Config
}
func (c *configChange) update(ctx context.Context, container containerd.Container) error {
image, err := c.client.GetImage(ctx, c.c.Image)
if err != nil {
return err
}
return container.Update(ctx, opts.WithSetPreviousConfig, opts.WithOrbitConfig(c.config.Paths(c.c.ID), c.c, image))
}
func pauseAndRun(ctx context.Context, container containerd.Container, fn func() error) error {
task, err := container.Task(ctx, nil)
if err != nil {
if errdefs.IsNotFound(err) {
return fn()
}
return err
}
if err := task.Pause(ctx); err != nil {
return err
}
// have a resume context incase the original context gets canceled
rctx := relayContext(context.Background())
defer task.Resume(rctx)
return fn()
}
func withImage(i containerd.Image) containerd.UpdateContainerOpts {
return func(ctx context.Context, client *containerd.Client, c *containers.Container) error {
c.Image = i.Name()
return nil
}
}