51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
package config
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import (
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"encoding/json"
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"github.com/filecoin-project/lotus/storage/sectorstorage/stores"
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"io"
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"io/ioutil"
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"os"
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"golang.org/x/xerrors"
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)
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func StorageFromFile(path string, def *stores.StorageConfig) (*stores.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) (*stores.StorageConfig, error) {
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var cfg stores.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(path string, config stores.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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if err := ioutil.WriteFile(path, b, 0644); err != nil {
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return xerrors.Errorf("persisting storage config (%s): %w", path, err)
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}
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return nil
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}
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