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5336362e64
- Wrap each prober function into a probe class that allows associating metric labels and custom metrics with a given probe; - Make sure all existing probe classes set a `class` metric label; - Move bandwidth probe size from being a metric label to a separate gauge metric; this will make it possible to use it to calculate average used bandwidth using a PromQL query; - Also export transfer time for the bandwidth prober (more accurate than the total probe time, since it excludes connection establishment time). Updates tailscale/corp#17912 Signed-off-by: Anton Tolchanov <anton@tailscale.com>
33 lines
638 B
Go
33 lines
638 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package prober
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import (
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"context"
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"fmt"
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"net"
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)
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// TCP returns a Probe that healthchecks a TCP endpoint.
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//
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// The ProbeFunc reports whether it can successfully connect to addr.
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func TCP(addr string) ProbeClass {
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return ProbeClass{
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Probe: func(ctx context.Context) error {
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return probeTCP(ctx, addr)
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},
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Class: "tcp",
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}
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}
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func probeTCP(ctx context.Context, addr string) error {
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var d net.Dialer
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conn, err := d.DialContext(ctx, "tcp", addr)
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if err != nil {
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return fmt.Errorf("dialing %q: %v", addr, err)
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}
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conn.Close()
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return nil
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}
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