71 lines
1.6 KiB
Go
71 lines
1.6 KiB
Go
package config
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import (
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"encoding/json"
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"errors"
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"io"
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"io/fs"
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"os"
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"path"
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"golang.org/x/xerrors"
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"github.com/filecoin-project/lotus/storage/sealer/storiface"
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)
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func StorageFromFile(path string, def *storiface.StorageConfig) (*storiface.StorageConfig, error) {
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file, err := os.Open(path)
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switch {
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case os.IsNotExist(err):
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if def == nil {
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return nil, xerrors.Errorf("couldn't load storage config: %w", err)
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}
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return def, nil
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case err != nil:
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return nil, err
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}
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defer file.Close() //nolint:errcheck // The file is RO
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return StorageFromReader(file)
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}
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func StorageFromReader(reader io.Reader) (*storiface.StorageConfig, error) {
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var cfg storiface.StorageConfig
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err := json.NewDecoder(reader).Decode(&cfg)
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if err != nil {
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return nil, err
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}
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return &cfg, nil
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}
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func WriteStorageFile(filePath string, config storiface.StorageConfig) error {
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b, err := json.MarshalIndent(config, "", " ")
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if err != nil {
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return xerrors.Errorf("marshaling storage config: %w", err)
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}
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info, err := os.Stat(filePath)
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if err != nil {
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if !errors.Is(err, fs.ErrNotExist) {
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return xerrors.Errorf("statting storage config (%s): %w", filePath, err)
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}
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if path.Base(filePath) == "." {
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filePath = path.Join(filePath, "storage.json")
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}
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} else {
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if info.IsDir() || path.Base(filePath) == "." {
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filePath = path.Join(filePath, "storage.json")
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}
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}
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if err := os.MkdirAll(path.Dir(filePath), 0755); err != nil {
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return xerrors.Errorf("making storage config parent directory: %w", err)
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}
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if err := os.WriteFile(filePath, b, 0644); err != nil {
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return xerrors.Errorf("persisting storage config (%s): %w", filePath, err)
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}
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return nil
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}
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