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626f02def2
Implementing a String() interface for each provider makes it easier for users to prefix log strings with the provider. Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
42 lines
870 B
Go
42 lines
870 B
Go
package main
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path"
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)
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const (
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configFile = "config"
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)
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// ProviderCDROM is the type implementing the Provider interface for CDROMs
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// It looks for a file called 'configFile' in the root
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type ProviderCDROM struct {
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}
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// NewCDROM returns a new ProviderCDROM
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func NewCDROM() *ProviderCDROM {
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return &ProviderCDROM{}
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}
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func (p *ProviderCDROM) String() string {
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return "CDROM"
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}
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// Probe checks if the CD has the right file
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func (p *ProviderCDROM) Probe() bool {
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_, err := os.Stat(path.Join(MountPoint, configFile))
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return (!os.IsNotExist(err))
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}
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// Extract gets both the CDROM specific and generic userdata
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func (p *ProviderCDROM) Extract() ([]byte, error) {
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data, err := ioutil.ReadFile(path.Join(MountPoint, configFile))
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if err != nil {
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return nil, fmt.Errorf("CDROM: Error reading file: %s", err)
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}
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return data, nil
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}
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