jcoffey-dev
4b0bec8956
GPLv3's "How to Apply These Terms" asks for a notice in each source file; this is the modern two-line SPDX form of it rather than the full paragraph. 82 files, including tests. The blank line after the header is load-bearing. In Go a comment block immediately preceding `package X` becomes the package doc comment, so without the separator the SPDX lines would be absorbed into the doc for the eleven packages whose doc.go (or main.go) opens with one, and `go doc` would print them. Verified it doesn't.
54 lines
1.6 KiB
Go
54 lines
1.6 KiB
Go
// SPDX-FileCopyrightText: 2026 LINUXexpert-org
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// SPDX-License-Identifier: GPL-3.0-or-later
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package preflight
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import (
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"context"
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"os"
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"os/exec"
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"github.com/LINUXexpert-org/stalwart-migrator/internal/service"
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)
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// DeploymentKind is how a Stalwart instance appears to be run, which
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// determines how cutover restarts it. It's an alias for
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// service.Kind rather than a parallel type: detection here and control
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// there have to agree on the same vocabulary, and one definition can't
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// drift from itself.
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type DeploymentKind = service.Kind
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const (
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DeploymentSystemd = service.Systemd
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DeploymentDocker = service.Docker
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DeploymentUnknown = service.Unknown
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)
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var systemdUnitPaths = []string{
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"/etc/systemd/system/stalwart.service",
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"/lib/systemd/system/stalwart.service",
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"/usr/lib/systemd/system/stalwart.service",
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}
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// DetectDeploymentKind makes a best-effort guess at how Stalwart is run
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// here. It's deliberately conservative and cheap (file stats, one docker
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// inspect) rather than exhaustive - an operator-supplied override should
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// always be able to win over this, since the cost of guessing wrong here is
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// cutover targeting the wrong thing.
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func DetectDeploymentKind(ctx context.Context, containerName string) DeploymentKind {
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for _, p := range systemdUnitPaths {
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if _, err := os.Stat(p); err == nil {
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return DeploymentSystemd
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}
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}
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if containerName == "" {
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containerName = "stalwart"
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}
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if _, err := exec.LookPath("docker"); err == nil {
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if err := exec.CommandContext(ctx, "docker", "inspect", containerName).Run(); err == nil {
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return DeploymentDocker
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}
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}
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return DeploymentUnknown
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}
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