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// Copyright (C) 2022-2023 Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later
package main
import (
"context"
"os"
"git.lukeshu.com/go/lowmemjson"
"github.com/datawire/dlib/dlog"
"github.com/datawire/ocibuild/pkg/cliutil"
"github.com/spf13/cobra"
"git.lukeshu.com/btrfs-progs-ng/cmd/btrfs-rec/inspect/rebuildmappings"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfs"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsvol"
"git.lukeshu.com/btrfs-progs-ng/lib/containers"
"git.lukeshu.com/btrfs-progs-ng/lib/maps"
)
func init() {
inspectors.AddCommand(&cobra.Command{
Use: "scandevices",
Args: cliutil.WrapPositionalArgs(cobra.NoArgs),
RunE: runWithRawFS(func(fs *btrfs.FS, cmd *cobra.Command, _ []string) (err error) {
ctx := cmd.Context()
results, err := rebuildmappings.ScanDevices(ctx, fs)
if err != nil {
return err
}
dlog.Info(ctx, "Writing scan results to stdout...")
if err := writeJSONFile(os.Stdout, results, lowmemjson.ReEncoderConfig{
Indent: "\t",
ForceTrailingNewlines: true,
CompactIfUnder: 16, //nolint:gomnd // This is what looks nice.
}); err != nil {
return err
}
dlog.Info(ctx, "... done writing")
return nil
}),
})
}
func readNodeList(ctx context.Context, filename string) ([]btrfsvol.LogicalAddr, error) {
if filename == "" {
return nil, nil
}
results, err := readJSONFile[rebuildmappings.ScanDevicesResult](ctx, filename)
if err != nil {
return nil, err
}
var cnt int
for _, devResults := range results {
cnt += len(devResults.FoundNodes)
}
set := make(containers.Set[btrfsvol.LogicalAddr], cnt)
for _, devResults := range results {
for laddr := range devResults.FoundNodes {
set.Insert(laddr)
}
}
return maps.SortedKeys(set), nil
}
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