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49307d554d
This is a rewrite of machined. It addresses some of the limitations and
complexity in the implementation. This introduces the idea of a
controller. A controller is responsible for managing the runtime, the
sequencer, and a new state type introduced in this PR.
A few highlights are:
- no more event bus
- functional approach to tasks (no more types defined for each task)
- the task function definition now offers a lot more context, like
access to raw API requests, the current sequence, a logger, the new
state interface, and the runtime interface.
- no more panics to handle reboots
- additional initialize and reboot sequences
- graceful gRPC server shutdown on critical errors
- config is now stored at install time to avoid having to download it at
install time and at boot time
- upgrades now use the local config instead of downloading it
- the upgrade API's preserve option takes precedence over the config's
install force option
Additionally, this pulls various packes in under machined to make the
code easier to navigate.
Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
37 lines
1.0 KiB
Go
37 lines
1.0 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package image
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import (
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"context"
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"fmt"
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"time"
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"github.com/talos-systems/talos/internal/app/machined/pkg/runtime"
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"github.com/talos-systems/talos/pkg/retry"
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"github.com/containerd/containerd"
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)
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// Pull is a convenience function that wraps the containerd image pull func with
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// retry functionality.
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func Pull(ctx context.Context, reg runtime.Registries, client *containerd.Client, ref string) (img containerd.Image, err error) {
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resolver := NewResolver(reg)
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err = retry.Exponential(1*time.Minute, retry.WithUnits(1*time.Second)).Retry(func() error {
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if img, err = client.Pull(ctx, ref, containerd.WithPullUnpack, containerd.WithResolver(resolver)); err != nil {
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return retry.ExpectedError(fmt.Errorf("failed to pull image %q: %w", ref, err))
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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return img, nil
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}
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