jcoffey-dev
719a945d64
In-place upgrade tool for Stalwart Mail Server (0.15.5 -> latest) with checkpointed rollback and post-migration validation. Design stage; see ARCHITECTURE.md.
23 lines
810 B
Go
23 lines
810 B
Go
package preflight
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import (
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"fmt"
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"os"
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"strings"
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)
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// LooksClustered does a conservative, heuristic scan for cluster-related
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// configuration. It exists to force a manual confirmation gate (see
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// ARCHITECTURE.md §4.1's cluster gate: one live node on the old version
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// during migration corrupts a shared store), not to enumerate peers
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// precisely. A false positive just costs an extra confirmation prompt; a
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// false negative is the dangerous direction, so this errs toward matching
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// broadly rather than requiring an exact schema match.
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func LooksClustered(configPath string) (bool, error) {
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data, err := os.ReadFile(configPath)
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if err != nil {
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return false, fmt.Errorf("preflight: read config %s: %w", configPath, err)
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}
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return strings.Contains(strings.ToLower(string(data)), "cluster"), nil
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}
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