1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
# 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 out["total"]["error.total"]["req"] == "0", "unexpected log stat"
'';
})
|
