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net/dns: rename impl to os.

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Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson 2021-04-02 19:40:13 -07:00 committed by Dave Anderson
parent c4530971db
commit 6a206fd0fb
1 changed files with 7 additions and 7 deletions
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14
net/dns/manager.go
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@ -27,7 +27,7 @@ const reconfigTimeout = time.Second
type Manager struct { type Manager struct {
logf logger.Logf logf logger.Logf
impl OSConfigurator os OSConfigurator
config OSConfig config OSConfig
} }
@ -37,10 +37,10 @@ func NewManager(logf logger.Logf, oscfg OSConfigurator) *Manager {
logf = logger.WithPrefix(logf, "dns: ") logf = logger.WithPrefix(logf, "dns: ")
m := &Manager{ m := &Manager{
logf: logf, logf: logf,
impl: oscfg, os: oscfg,
} }
m.logf("using %T", m.impl) m.logf("using %T", m.os)
return m return m
} }
@ -52,7 +52,7 @@ func (m *Manager) Set(config OSConfig) error {
m.logf("Set: %+v", config) m.logf("Set: %+v", config)
if len(config.Nameservers) == 0 { if len(config.Nameservers) == 0 {
err := m.impl.Set(OSConfig{}) err := m.os.Set(OSConfig{})
// If we save the config, we will not retry next time. Only do this on success. // If we save the config, we will not retry next time. Only do this on success.
if err == nil { if err == nil {
m.config = config m.config = config
@ -60,7 +60,7 @@ func (m *Manager) Set(config OSConfig) error {
return err return err
} }
err := m.impl.Set(config) err := m.os.Set(config)
// If we save the config, we will not retry next time. Only do this on success. // If we save the config, we will not retry next time. Only do this on success.
if err == nil { if err == nil {
m.config = config m.config = config
@ -70,11 +70,11 @@ func (m *Manager) Set(config OSConfig) error {
} }
func (m *Manager) Up() error { func (m *Manager) Up() error {
return m.impl.Set(m.config) return m.os.Set(m.config)
} }
func (m *Manager) Down() error { func (m *Manager) Down() error {
return m.impl.Close() return m.os.Close()
} }
// Cleanup restores the system DNS configuration to its original state // Cleanup restores the system DNS configuration to its original state