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| 1 | +import ../make-test-python.nix ( |
| 2 | + { lib, pkgs, ... }: |
| 3 | + let |
| 4 | + # Take the original journald message and create a new payload which only |
| 5 | + # contains the relevant fields - these must match the database columns. |
| 6 | + journalVrlRemapTransform = { |
| 7 | + journald_remap = { |
| 8 | + inputs = [ "journald" ]; |
| 9 | + type = "remap"; |
| 10 | + source = '' |
| 11 | + m = {} |
| 12 | + m.app = .SYSLOG_IDENTIFIER |
| 13 | + m.host = .host |
| 14 | + m.severity = to_int(.PRIORITY) ?? 0 |
| 15 | + m.level = to_syslog_level(m.severity) ?? "" |
| 16 | + m.message = strip_ansi_escape_codes!(.message) |
| 17 | + m.timestamp = .timestamp |
| 18 | + m.uid = to_int(._UID) ?? 0 |
| 19 | + m.pid = to_int(._PID) ?? 0 |
| 20 | + . = [m] |
| 21 | + ''; |
| 22 | + }; |
| 23 | + }; |
| 24 | + in |
| 25 | + { |
| 26 | + name = "vector-journald-clickhouse"; |
| 27 | + meta.maintainers = [ pkgs.lib.maintainers.happysalada ]; |
| 28 | + |
| 29 | + nodes = { |
| 30 | + clickhouse = |
| 31 | + { config, pkgs, ... }: |
| 32 | + { |
| 33 | + virtualisation.diskSize = 5 * 1024; |
| 34 | + virtualisation.memorySize = 4096; |
| 35 | + |
| 36 | + networking.firewall.allowedTCPPorts = [ 6000 ]; |
| 37 | + |
| 38 | + services.vector = { |
| 39 | + enable = true; |
| 40 | + journaldAccess = true; |
| 41 | + |
| 42 | + settings = { |
| 43 | + sources = { |
| 44 | + journald = { |
| 45 | + type = "journald"; |
| 46 | + }; |
| 47 | + |
| 48 | + vector_source = { |
| 49 | + type = "vector"; |
| 50 | + address = "[::]:6000"; |
| 51 | + }; |
| 52 | + }; |
| 53 | + |
| 54 | + transforms = journalVrlRemapTransform; |
| 55 | + |
| 56 | + sinks = { |
| 57 | + clickhouse = { |
| 58 | + type = "clickhouse"; |
| 59 | + inputs = [ |
| 60 | + "journald_remap" |
| 61 | + "vector_source" |
| 62 | + ]; |
| 63 | + endpoint = "http://localhost:8123"; |
| 64 | + database = "journald"; |
| 65 | + table = "logs"; |
| 66 | + date_time_best_effort = true; |
| 67 | + }; |
| 68 | + }; |
| 69 | + }; |
| 70 | + |
| 71 | + }; |
| 72 | + |
| 73 | + services.clickhouse = { |
| 74 | + enable = true; |
| 75 | + }; |
| 76 | + }; |
| 77 | + |
| 78 | + vector = |
| 79 | + { config, pkgs, ... }: |
| 80 | + { |
| 81 | + services.vector = { |
| 82 | + enable = true; |
| 83 | + journaldAccess = true; |
| 84 | + |
| 85 | + settings = { |
| 86 | + sources = { |
| 87 | + journald = { |
| 88 | + type = "journald"; |
| 89 | + }; |
| 90 | + }; |
| 91 | + |
| 92 | + transforms = journalVrlRemapTransform; |
| 93 | + |
| 94 | + sinks = { |
| 95 | + vector_sink = { |
| 96 | + type = "vector"; |
| 97 | + inputs = [ "journald_remap" ]; |
| 98 | + address = "clickhouse:6000"; |
| 99 | + }; |
| 100 | + }; |
| 101 | + }; |
| 102 | + }; |
| 103 | + }; |
| 104 | + }; |
| 105 | + |
| 106 | + testScript = |
| 107 | + let |
| 108 | + # work around quote/substitution complexity by Nix, Perl, bash and SQL. |
| 109 | + databaseDDL = pkgs.writeText "database.sql" "CREATE DATABASE IF NOT EXISTS journald"; |
| 110 | + |
| 111 | + # https://clickhouse.com/blog/storing-log-data-in-clickhouse-fluent-bit-vector-open-telemetry |
| 112 | + tableDDL = pkgs.writeText "table.sql" '' |
| 113 | + CREATE TABLE IF NOT EXISTS journald.logs ( |
| 114 | + timestamp DateTime64(6), |
| 115 | + app LowCardinality(String), |
| 116 | + host LowCardinality(String), |
| 117 | + level LowCardinality(String), |
| 118 | + severity UInt8, |
| 119 | + message String, |
| 120 | + uid UInt16, |
| 121 | + pid UInt32, |
| 122 | + ) |
| 123 | + ENGINE = MergeTree() |
| 124 | + ORDER BY (host, app, timestamp) |
| 125 | + PARTITION BY toYYYYMM(timestamp) |
| 126 | + ''; |
| 127 | + |
| 128 | + selectQuery = pkgs.writeText "select.sql" '' |
| 129 | + SELECT COUNT(host) FROM journald.logs |
| 130 | + WHERE message LIKE '%Vector has started%' |
| 131 | + ''; |
| 132 | + in |
| 133 | + '' |
| 134 | + clickhouse.wait_for_unit("clickhouse") |
| 135 | + clickhouse.wait_for_open_port(6000) |
| 136 | + clickhouse.wait_for_open_port(8123) |
| 137 | +
|
| 138 | + clickhouse.succeed( |
| 139 | + "cat ${databaseDDL} | clickhouse-client" |
| 140 | + ) |
| 141 | +
|
| 142 | + clickhouse.succeed( |
| 143 | + "cat ${tableDDL} | clickhouse-client" |
| 144 | + ) |
| 145 | +
|
| 146 | + for machine in clickhouse, vector: |
| 147 | + machine.wait_for_unit("vector") |
| 148 | + machine.wait_until_succeeds( |
| 149 | + "journalctl -o cat -u vector.service | grep 'Vector has started'" |
| 150 | + ) |
| 151 | +
|
| 152 | + clickhouse.wait_until_succeeds( |
| 153 | + "cat ${selectQuery} | clickhouse-client | grep 2" |
| 154 | + ) |
| 155 | + ''; |
| 156 | + } |
| 157 | +) |
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