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|
{ lib, pkgs, ... }:
{
name = "vector-nginx-clickhouse";
meta.maintainers = [ pkgs.lib.maintainers.happysalada ];
nodes = {
clickhouse =
{ config, pkgs, ... }:
{
virtualisation.memorySize = 4096;
# Clickhouse module can't listen on a non-loopback IP.
networking.firewall.allowedTCPPorts = [ 6000 ];
services.clickhouse.enable = true;
# Exercise Vector sink->source for now.
services.vector = {
enable = true;
settings = {
sources = {
vector_source = {
type = "vector";
address = "[::]:6000";
};
};
sinks = {
clickhouse = {
type = "clickhouse";
inputs = [ "vector_source" ];
endpoint = "http://localhost:8123";
database = "nginxdb";
table = "access_logs";
skip_unknown_fields = true;
};
};
};
};
};
nginx =
{ config, pkgs, ... }:
{
services.nginx = {
enable = true;
virtualHosts.localhost = { };
};
services.vector = {
enable = true;
settings = {
sources = {
nginx_logs = {
type = "file";
include = [ "/var/log/nginx/access.log" ];
read_from = "end";
};
};
sinks = {
vector_sink = {
type = "vector";
inputs = [ "nginx_logs" ];
address = "clickhouse:6000";
};
};
};
};
systemd.services.vector.serviceConfig = {
SupplementaryGroups = [ "nginx" ];
};
};
};
testScript =
let
# work around quote/substitution complexity by Nix, Perl, bash and SQL.
databaseDDL = pkgs.writeText "database.sql" "CREATE DATABASE IF NOT EXISTS nginxdb";
tableDDL = pkgs.writeText "table.sql" ''
CREATE TABLE IF NOT EXISTS nginxdb.access_logs (
message String
)
ENGINE = MergeTree()
ORDER BY tuple()
'';
# Graciously taken from https://clickhouse.com/docs/en/integrations/vector
tableView = pkgs.writeText "table-view.sql" ''
CREATE MATERIALIZED VIEW nginxdb.access_logs_view
(
RemoteAddr String,
Client String,
RemoteUser String,
TimeLocal DateTime,
RequestMethod String,
Request String,
HttpVersion String,
Status Int32,
BytesSent Int64,
UserAgent String
)
ENGINE = MergeTree()
ORDER BY RemoteAddr
POPULATE AS
WITH
splitByWhitespace(message) as split,
splitByRegexp('\S \d+ "([^"]*)"', message) as referer
SELECT
split[1] AS RemoteAddr,
split[2] AS Client,
split[3] AS RemoteUser,
parseDateTimeBestEffort(replaceOne(trim(LEADING '[' FROM split[4]), ':', ' ')) AS TimeLocal,
trim(LEADING '"' FROM split[6]) AS RequestMethod,
split[7] AS Request,
trim(TRAILING '"' FROM split[8]) AS HttpVersion,
split[9] AS Status,
split[10] AS BytesSent,
trim(BOTH '"' from referer[2]) AS UserAgent
FROM
(SELECT message FROM nginxdb.access_logs)
'';
selectQuery = pkgs.writeText "select.sql" "SELECT * from nginxdb.access_logs_view";
in
''
clickhouse.wait_for_unit("clickhouse")
clickhouse.wait_for_open_port(8123)
clickhouse.wait_until_succeeds(
"journalctl -o cat -u clickhouse.service | grep 'Started ClickHouse server'"
)
clickhouse.wait_for_unit("vector")
clickhouse.wait_for_open_port(6000)
clickhouse.succeed(
"cat ${databaseDDL} | clickhouse-client"
)
clickhouse.succeed(
"cat ${tableDDL} | clickhouse-client"
)
clickhouse.succeed(
"cat ${tableView} | clickhouse-client"
)
nginx.wait_for_unit("nginx")
nginx.wait_for_open_port(80)
nginx.wait_for_unit("vector")
nginx.wait_until_succeeds(
"journalctl -o cat -u vector.service | grep 'Starting file server'"
)
nginx.succeed("curl http://localhost/")
nginx.succeed("curl http://localhost/")
nginx.wait_for_file("/var/log/nginx/access.log")
nginx.wait_until_succeeds(
"journalctl -o cat -u vector.service | grep 'Found new file to watch. file=/var/log/nginx/access.log'"
)
clickhouse.wait_until_succeeds(
"cat ${selectQuery} | clickhouse-client | grep 'curl'"
)
'';
}
|
