51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
package cluster
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import (
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"fmt"
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"io"
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"os"
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fs "github.com/hack-pad/hackpadfs"
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)
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// OpenFile opens a file on the cluster's config directory with the specified flags
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func (m *Cluster) OpenFile(name string, flags int, args ...any) (fs.File, error) {
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if len(args) > 0 {
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name = fmt.Sprintf(name, args...)
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}
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return fs.OpenFile(m.dir, name, flags, 0644)
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}
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// CreateTruncFile creates or truncates a file on the cluster's config directory
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func (m *Cluster) CreateTruncFile(name string, args ...any) (io.WriteCloser, error) {
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return m.openWriter(name, os.O_CREATE|os.O_TRUNC, args...)
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}
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// CreateFile creates a file on the cluster's config directory
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func (m *Cluster) CreateFile(name string, args ...any) (io.WriteCloser, error) {
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return m.openWriter(name, os.O_CREATE, args...)
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}
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func (m *Cluster) openWriter(name string, flags int, args ...any) (io.WriteCloser, error) {
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f, err := m.OpenFile(name, os.O_WRONLY|flags, args...)
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if err != nil {
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return nil, err
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}
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if f, ok := f.(io.WriteCloser); ok {
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return f, nil
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}
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panic("unreachable")
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}
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// ReadFile reads a file from the cluster's config directory
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func (m *Cluster) ReadFile(name string, args ...any) ([]byte, error) {
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if len(args) > 0 {
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name = fmt.Sprintf(name, args...)
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}
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return fs.ReadFile(m.dir, name)
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}
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