43 lines
1002 B
Go
43 lines
1002 B
Go
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package network
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import (
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"errors"
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"fmt"
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"io/fs"
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"isle/daemon/daecommon"
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"isle/jsonutil"
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"isle/toolkit"
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"path/filepath"
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)
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// loadStoreConfig writes the given NetworkConfig to the networkStateDir if the
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// config is non-nil. If the config is nil then a config is read from
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// networkStateDir, returning the zero value if no config was previously
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// stored.
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func loadStoreConfig(
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networkStateDir toolkit.Dir, config *daecommon.NetworkConfig,
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) (
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daecommon.NetworkConfig, error,
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) {
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path := filepath.Join(networkStateDir.Path, "config.json")
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if config == nil {
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config = new(daecommon.NetworkConfig)
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err := jsonutil.LoadFile(&config, path)
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if err != nil && !errors.Is(err, fs.ErrNotExist) {
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return daecommon.NetworkConfig{}, fmt.Errorf(
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"loading %q: %w", path, err,
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)
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}
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return *config, nil
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}
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if err := jsonutil.WriteFile(*config, path, 0600); err != nil {
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return daecommon.NetworkConfig{}, fmt.Errorf(
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"writing to %q: %w", path, err,
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)
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}
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return *config, nil
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}
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