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wgengine: make opts.Metrics mandatory
Fixes #13582 Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
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@ -196,7 +196,8 @@ type Config struct {
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// HealthTracker, if non-nil, is the health tracker to use.
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// HealthTracker, if non-nil, is the health tracker to use.
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HealthTracker *health.Tracker
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HealthTracker *health.Tracker
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// Metrics, if non-nil, is the usermetrics registry to use.
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// Metrics is the usermetrics registry to use.
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// Mandatory, if not set, an error is returned.
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Metrics *usermetric.Registry
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Metrics *usermetric.Registry
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// Dialer is the dialer to use for outbound connections.
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// Dialer is the dialer to use for outbound connections.
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@ -273,6 +274,10 @@ func NewUserspaceEngine(logf logger.Logf, conf Config) (_ Engine, reterr error)
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panic("NewUserspaceEngine called without HealthTracker (being strict in tests)")
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panic("NewUserspaceEngine called without HealthTracker (being strict in tests)")
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}
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}
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if conf.Metrics == nil {
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return nil, errors.New("NewUserspaceEngine: opts.Metrics is required, please pass a *usermetric.Registry")
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}
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if conf.Tun == nil {
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if conf.Tun == nil {
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logf("[v1] using fake (no-op) tun device")
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logf("[v1] using fake (no-op) tun device")
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conf.Tun = tstun.NewFake()
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conf.Tun = tstun.NewFake()
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