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# verifies:
# 1. Traffic Server is able to start
# 2. Traffic Server spawns traffic_crashlog upon startup
# 3. Traffic Server proxies HTTP requests according to URL remapping rules
# in 'services.trafficserver.remap'
# 4. Traffic Server applies per-map settings specified with the conf_remap
# plugin
# 5. Traffic Server caches HTTP responses
# 6. Traffic Server processes HTTP PUSH requests
# 7. Traffic Server can load the healthchecks plugin
# 8. Traffic Server logs HTTP traffic as configured
#
# uses:
# - bin/traffic_manager
# - bin/traffic_server
# - bin/traffic_crashlog
# - bin/traffic_cache_tool
# - bin/traffic_ctl
# - bin/traffic_logcat
# - bin/traffic_logstats
# - bin/tspush
import ./make-test-python.nix ({ pkgs, ... }: {
name = "trafficserver";
meta = with pkgs.lib.maintainers; {
maintainers = [ midchildan ];
};
nodes = {
ats = { pkgs, lib, config, ... }: let
user = config.users.users.trafficserver.name;
group = config.users.groups.trafficserver.name;
healthchecks = pkgs.writeText "healthchecks.conf" ''
/status /tmp/ats.status text/plain 200 500
'';
in {
services.trafficserver.enable = true;
services.trafficserver.records = {
proxy.config.http.server_ports = "80 80:ipv6";
proxy.config.hostdb.host_file.path = "/etc/hosts";
proxy.config.log.max_space_mb_headroom = 0;
proxy.config.http.push_method_enabled = 1;
# check that cache storage is usable before accepting traffic
proxy.config.http.wait_for_cache = 2;
};
services.trafficserver.plugins = [
{ path = "healthchecks.so"; arg = toString healthchecks; }
{ path = "xdebug.so"; }
];
services.trafficserver.remap = ''
map http://httpbin.test http://httpbin
map http://pristine-host-hdr.test http://httpbin \
@plugin=conf_remap.so \
@pparam=proxy.config.url_remap.pristine_host_hdr=1
map http://ats/tspush http://httpbin/cache \
@plugin=conf_remap.so \
@pparam=proxy.config.http.cache.required_headers=0
'';
services.trafficserver.storage = ''
/dev/vdb volume=1
'';
networking.firewall.allowedTCPPorts = [ 80 ];
virtualisation.emptyDiskImages = [ 256 ];
services.udev.extraRules = ''
KERNEL=="vdb", OWNER="${user}", GROUP="${group}"
'';
};
httpbin = { pkgs, lib, ... }: let
python = pkgs.python3.withPackages
(ps: with ps; [ httpbin gunicorn gevent ]);
in {
systemd.services.httpbin = {
enable = true;
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
ExecStart = "${python}/bin/gunicorn -b 0.0.0.0:80 httpbin:app -k gevent";
};
};
networking.firewall.allowedTCPPorts = [ 80 ];
};
client = { pkgs, lib, ... }: {
environment.systemPackages = with pkgs; [ curl ];
};
};
testScript = { nodes, ... }: let
sampleFile = pkgs.writeText "sample.txt" ''
It's the season of White Album.
'';
in ''
import json
import re
ats.wait_for_unit("trafficserver")
ats.wait_for_open_port(80)
httpbin.wait_for_unit("httpbin")
httpbin.wait_for_open_port(80)
client.wait_for_unit("network-online.target")
with subtest("Traffic Server is running"):
out = ats.succeed("traffic_ctl server status")
assert out.strip() == "Proxy -- on"
with subtest("traffic_crashlog is running"):
ats.succeed("pgrep -f traffic_crashlog")
with subtest("basic remapping works"):
out = client.succeed("curl -vv -H 'Host: httpbin.test' http://ats/headers")
assert json.loads(out)["headers"]["Host"] == "httpbin"
with subtest("conf_remap plugin works"):
out = client.succeed(
"curl -vv -H 'Host: pristine-host-hdr.test' http://ats/headers"
)
assert json.loads(out)["headers"]["Host"] == "pristine-host-hdr.test"
with subtest("caching works"):
out = client.succeed(
"curl -vv -D - -H 'Host: httpbin.test' -H 'X-Debug: X-Cache' http://ats/cache/60 -o /dev/null"
)
assert "X-Cache: miss" in out
out = client.succeed(
"curl -vv -D - -H 'Host: httpbin.test' -H 'X-Debug: X-Cache' http://ats/cache/60 -o /dev/null"
)
assert "X-Cache: hit-fresh" in out
with subtest("pushing to cache works"):
url = "http://ats/tspush"
ats.succeed(f"echo {url} > /tmp/urls.txt")
out = ats.succeed(
f"tspush -f '${sampleFile}' -u {url}"
)
assert "HTTP/1.0 201 Created" in out, "cache push failed"
out = ats.succeed(
"traffic_cache_tool --spans /etc/trafficserver/storage.config find --input /tmp/urls.txt"
)
assert "Span: /dev/vdb" in out, "cache not stored on disk"
out = client.succeed(f"curl {url}").strip()
expected = (
open("${sampleFile}").read().strip()
)
assert out == expected, "cache content mismatch"
with subtest("healthcheck plugin works"):
out = client.succeed("curl -vv http://ats/status -o /dev/null -w '%{http_code}'")
assert out.strip() == "500"
ats.succeed("touch /tmp/ats.status")
out = client.succeed("curl -vv http://ats/status -o /dev/null -w '%{http_code}'")
assert out.strip() == "200"
with subtest("logging works"):
access_log_path = "/var/log/trafficserver/squid.blog"
ats.wait_for_file(access_log_path)
out = ats.succeed(f"traffic_logcat {access_log_path}").split("\n")[0]
expected = "^\S+ \S+ \S+ TCP_MISS/200 \S+ GET http://httpbin/headers - DIRECT/httpbin application/json$"
assert re.fullmatch(expected, out) is not None, "no matching logs"
out = json.loads(ats.succeed(f"traffic_logstats -jf {access_log_path}"))
assert isinstance(out, dict)
assert out["total"]["error.total"]["req"] == "0", "unexpected log stat"
'';
})
|