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1fbf40796f
Fixes #1563 This implements dmesg reading via `/dev/kmsg`, with message parsing and formatting. Kernel log facility and severity are parsed, timestamp is calculated relative to boot time (it's accurate unless time jumps a lot during node lifetime). New flags to follow dmesg was added, tail flag allows to stream only new message (ignoring old messages). We could try to implement tailing last N messages, just a bit more work, open to suggestions (for symmetry with regular logs). Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
61 lines
1.6 KiB
Go
61 lines
1.6 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package kmsg_test
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import (
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/talos-systems/talos/internal/pkg/kmsg"
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)
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func mustParse(tStr string) time.Time {
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t, err := time.Parse("2006-01-02 15:04:05.999999999 -0700 MST", tStr)
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if err != nil {
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panic(err)
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}
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return t
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}
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func TestParseMessage(t *testing.T) {
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for _, testCase := range []struct {
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input string
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expected kmsg.Message
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}{
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{
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input: `7,160,424069,-;pci_root PNP0A03:00: host bridge window [io 0x0000-0x0cf7] (ignored)
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SUBSYSTEM=acpi
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DEVICE=+acpi:PNP0A03:00`,
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expected: kmsg.Message{
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Facility: kmsg.Kern,
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Priority: kmsg.Debug,
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SequenceNumber: 160,
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Clock: 424069,
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Timestamp: mustParse("0001-01-01 00:00:00.424069 +0000 UTC"),
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Message: "pci_root PNP0A03:00: host bridge window [io 0x0000-0x0cf7] (ignored)\n SUBSYSTEM=acpi\n DEVICE=+acpi:PNP0A03:00",
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},
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},
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{
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input: `6,339,5140900,-;NET: Registered protocol family 10`,
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expected: kmsg.Message{
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Facility: kmsg.Kern,
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Priority: kmsg.Info,
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SequenceNumber: 339,
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Clock: 5140900,
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Timestamp: mustParse("0001-01-01 00:00:05.1409 +0000 UTC"),
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Message: "NET: Registered protocol family 10",
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},
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},
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} {
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message, err := kmsg.ParseMessage(testCase.input, time.Time{})
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assert.NoError(t, err)
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assert.Equal(t, testCase.expected, message)
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}
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}
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