|
| 1 | +package syslogparser_test |
| 2 | + |
| 3 | +import ( |
| 4 | + "io" |
| 5 | + "strings" |
| 6 | + "testing" |
| 7 | + "time" |
| 8 | + |
| 9 | + "github.com/grafana/alloy/internal/component/loki/source/syslog/internal/syslogtarget/syslogparser" |
| 10 | + "github.com/leodido/go-syslog/v4" |
| 11 | + "github.com/leodido/go-syslog/v4/rfc3164" |
| 12 | + "github.com/leodido/go-syslog/v4/rfc5424" |
| 13 | + "github.com/stretchr/testify/require" |
| 14 | +) |
| 15 | + |
| 16 | +var ( |
| 17 | + defaultMaxMessageLength = 8192 |
| 18 | +) |
| 19 | + |
| 20 | +func TestParseStream_OctetCounting(t *testing.T) { |
| 21 | + r := strings.NewReader("23 <13>1 - - - - - - First24 <13>1 - - - - - - Second") |
| 22 | + |
| 23 | + results := make([]*syslog.Result, 0) |
| 24 | + cb := func(res *syslog.Result) { |
| 25 | + results = append(results, res) |
| 26 | + } |
| 27 | + |
| 28 | + err := syslogparser.ParseStream(false, false, r, cb, defaultMaxMessageLength) |
| 29 | + require.NoError(t, err) |
| 30 | + |
| 31 | + require.Equal(t, 2, len(results)) |
| 32 | + require.NoError(t, results[0].Error) |
| 33 | + require.Equal(t, "First", *results[0].Message.(*rfc5424.SyslogMessage).Message) |
| 34 | + require.NoError(t, results[1].Error) |
| 35 | + require.Equal(t, "Second", *results[1].Message.(*rfc5424.SyslogMessage).Message) |
| 36 | +} |
| 37 | + |
| 38 | +func TestParseStream_ValidParseError(t *testing.T) { |
| 39 | + // This message can not parse fully but is valid when using the BestEffort Parser Option. |
| 40 | + r := strings.NewReader("17 <13>1 First") |
| 41 | + |
| 42 | + results := make([]*syslog.Result, 0) |
| 43 | + cb := func(res *syslog.Result) { |
| 44 | + results = append(results, res) |
| 45 | + } |
| 46 | + |
| 47 | + err := syslogparser.ParseStream(false, false, r, cb, defaultMaxMessageLength) |
| 48 | + require.NoError(t, err) |
| 49 | + |
| 50 | + require.Equal(t, 1, len(results)) |
| 51 | + require.EqualError(t, results[0].Error, "expecting a RFC3339MICRO timestamp or a nil value [col 6]") |
| 52 | + require.True(t, results[0].Message.(*rfc5424.SyslogMessage).Valid()) |
| 53 | +} |
| 54 | + |
| 55 | +func TestParseStream_OctetCounting_LongMessage(t *testing.T) { |
| 56 | + r := strings.NewReader("8198 <13>1 - - - - - - First") |
| 57 | + |
| 58 | + results := make([]*syslog.Result, 0) |
| 59 | + cb := func(res *syslog.Result) { |
| 60 | + results = append(results, res) |
| 61 | + } |
| 62 | + |
| 63 | + err := syslogparser.ParseStream(false, false, r, cb, defaultMaxMessageLength) |
| 64 | + require.NoError(t, err) |
| 65 | + |
| 66 | + require.Equal(t, 1, len(results)) |
| 67 | + require.EqualError(t, results[0].Error, "message too long to parse. was size 8198, max length 8192") |
| 68 | +} |
| 69 | + |
| 70 | +func TestParseStream_NewlineSeparated(t *testing.T) { |
| 71 | + r := strings.NewReader("<13>1 - - - - - - First\n<13>1 - - - - - - Second\n") |
| 72 | + |
| 73 | + results := make([]*syslog.Result, 0) |
| 74 | + cb := func(res *syslog.Result) { |
| 75 | + results = append(results, res) |
| 76 | + } |
| 77 | + |
| 78 | + err := syslogparser.ParseStream(false, false, r, cb, defaultMaxMessageLength) |
| 79 | + require.NoError(t, err) |
| 80 | + |
| 81 | + require.Equal(t, 2, len(results)) |
| 82 | + require.NoError(t, results[0].Error) |
| 83 | + require.Equal(t, "First", *results[0].Message.(*rfc5424.SyslogMessage).Message) |
| 84 | + require.NoError(t, results[1].Error) |
| 85 | + require.Equal(t, "Second", *results[1].Message.(*rfc5424.SyslogMessage).Message) |
| 86 | +} |
| 87 | + |
| 88 | +func TestParseStream_InvalidStream(t *testing.T) { |
| 89 | + r := strings.NewReader("invalid") |
| 90 | + |
| 91 | + err := syslogparser.ParseStream(false, false, r, func(_ *syslog.Result) {}, defaultMaxMessageLength) |
| 92 | + require.EqualError(t, err, "invalid or unsupported framing. first byte: 'i'") |
| 93 | +} |
| 94 | + |
| 95 | +func TestParseStream_EmptyStream(t *testing.T) { |
| 96 | + r := strings.NewReader("") |
| 97 | + |
| 98 | + err := syslogparser.ParseStream(false, false, r, func(_ *syslog.Result) {}, defaultMaxMessageLength) |
| 99 | + require.Equal(t, err, io.EOF) |
| 100 | +} |
| 101 | + |
| 102 | +func TestParseStream_RFC3164Timestamp(t *testing.T) { |
| 103 | + r := strings.NewReader("<13>Dec 1 00:00:00 host Message") |
| 104 | + |
| 105 | + results := make([]*syslog.Result, 0) |
| 106 | + cb := func(res *syslog.Result) { |
| 107 | + results = append(results, res) |
| 108 | + } |
| 109 | + |
| 110 | + err := syslogparser.ParseStream(true, false, r, cb, defaultMaxMessageLength) |
| 111 | + require.NoError(t, err) |
| 112 | + |
| 113 | + require.Equal(t, 1, len(results)) |
| 114 | + require.NoError(t, results[0].Error) |
| 115 | + require.Equal(t, "Message", *results[0].Message.(*rfc3164.SyslogMessage).Message) |
| 116 | + require.Equal(t, "host", *results[0].Message.(*rfc3164.SyslogMessage).Hostname) |
| 117 | + require.Equal(t, time.Date(0, 12, 1, 0, 0, 0, 0, time.UTC), *results[0].Message.(*rfc3164.SyslogMessage).Timestamp) |
| 118 | +} |
| 119 | + |
| 120 | +func TestParseStream_RFC3164TimestampWithYear(t *testing.T) { |
| 121 | + r := strings.NewReader("<13>Dec 1 00:00:00 host Message") |
| 122 | + |
| 123 | + results := make([]*syslog.Result, 0) |
| 124 | + cb := func(res *syslog.Result) { |
| 125 | + results = append(results, res) |
| 126 | + } |
| 127 | + |
| 128 | + err := syslogparser.ParseStream(true, true, r, cb, defaultMaxMessageLength) |
| 129 | + require.NoError(t, err) |
| 130 | + |
| 131 | + require.Equal(t, 1, len(results)) |
| 132 | + require.NoError(t, results[0].Error) |
| 133 | + require.Equal(t, "Message", *results[0].Message.(*rfc3164.SyslogMessage).Message) |
| 134 | + require.Equal(t, "host", *results[0].Message.(*rfc3164.SyslogMessage).Hostname) |
| 135 | + require.Equal(t, time.Date(time.Now().Year(), 12, 1, 0, 0, 0, 0, time.UTC), *results[0].Message.(*rfc3164.SyslogMessage).Timestamp) |
| 136 | +} |
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