Pim van Pelt
87050bcf13
- ipng_stats_logtail now accepts an optional if=$variable parameter that suppresses log lines when the variable is empty or "0", following the same semantics as nginx's access_log if=. The condition is checked before format rendering for zero overhead on filtered requests. Filtered requests are still counted by stats. - Log format examples updated to include $scheme for http/https visibility, and renamed to ipng_stats_logtail to match production. - Robot test added for the if= filter (19 tests, 19 pass). - FR-8.5 added to design doc for the if= semantics.
290 lines
11 KiB
Plaintext
290 lines
11 KiB
Plaintext
# SPDX-License-Identifier: Apache-2.0
|
|
*** Settings ***
|
|
Documentation End-to-end tests for ngx_http_ipng_stats_module.
|
|
... Deploys a 3-node containerlab topology and validates
|
|
... attribution, counters, histograms, filters, variables,
|
|
... and reload semantics.
|
|
Library OperatingSystem
|
|
Library String
|
|
Suite Setup Deploy Lab
|
|
Suite Teardown Cleanup Lab
|
|
|
|
*** Variables ***
|
|
${lab-name} ipng-stats-test
|
|
${lab-file} lab/ipng-stats.clab.yml
|
|
${runtime} docker
|
|
${CLAB_BIN} sudo containerlab
|
|
${SERVER} clab-${lab-name}-server
|
|
${CLIENT1} clab-${lab-name}-client1
|
|
${CLIENT2} clab-${lab-name}-client2
|
|
${SCRAPE_URL} http://172.20.40.2:9113/.well-known/ipng/statsz
|
|
${SERVER_MGMT} http://172.20.40.2:8080
|
|
|
|
*** Test Cases ***
|
|
|
|
# --- Basic functionality ---
|
|
|
|
Module loads
|
|
[Documentation] nginx -t passes with the module loaded.
|
|
${output} = Docker Exec ${SERVER} nginx -t 2>&1
|
|
Should Contain ${output} syntax is ok
|
|
|
|
Prometheus scrape
|
|
[Documentation] Scrape returns HELP/TYPE preamble.
|
|
${output} = Scrape Prometheus
|
|
Should Contain ${output} nginx-ipng-stats-plugin
|
|
Should Contain ${output} nginx_ipng_requests_total
|
|
|
|
JSON scrape
|
|
[Documentation] Accept: application/json returns valid JSON with schema.
|
|
${rc} ${output} = Run And Return Rc And Output
|
|
... curl -sf -H 'Accept: application/json' ${SCRAPE_URL} | python3 -m json.tool
|
|
Should Be Equal As Integers ${rc} 0
|
|
Should Contain ${output} "schema": 1
|
|
|
|
# --- Per-device attribution ---
|
|
|
|
Attribute cl1 via eth1
|
|
[Documentation] Traffic on server:eth1 carries source_tag=cl1, vip=10.0.1.1.
|
|
Send Fast Requests ${CLIENT1} 10.0.1.1 5
|
|
Wait For Flush
|
|
${output} = Scrape Prometheus
|
|
Should Contain ${output} source_tag="cl1"
|
|
Should Contain ${output} vip="10.0.1.1"
|
|
|
|
Attribute cl2 via eth2
|
|
[Documentation] Traffic on server:eth2 carries source_tag=cl2, vip=10.0.2.1.
|
|
Send Fast Requests ${CLIENT2} 10.0.2.1 5
|
|
Wait For Flush
|
|
${output} = Scrape Prometheus
|
|
Should Contain ${output} source_tag="cl2"
|
|
Should Contain ${output} vip="10.0.2.1"
|
|
|
|
Direct traffic tagged
|
|
[Documentation] Mgmt-interface traffic carries source_tag=direct.
|
|
${rc} ${output} = Run And Return Rc And Output
|
|
... curl -sf ${SERVER_MGMT}/
|
|
Should Be Equal As Integers ${rc} 0
|
|
Wait For Flush
|
|
${output} = Scrape Prometheus
|
|
Should Contain ${output} source_tag="direct"
|
|
|
|
# --- Status code tracking ---
|
|
|
|
Per-code counters
|
|
[Documentation] 404 and 200 appear as distinct code= labels.
|
|
Docker Exec Ignore Rc ${CLIENT1} curl -s http://10.0.1.1:8080/notfound
|
|
Docker Exec Ignore Rc ${CLIENT1} curl -s http://10.0.1.1:8080/notfound
|
|
Wait For Flush
|
|
${output} = Scrape With Filter source_tag=cl1
|
|
Should Contain ${output} code="404"
|
|
Should Contain ${output} code="200"
|
|
|
|
# --- Duration histogram ---
|
|
|
|
Duration histogram
|
|
[Documentation] proxy_pass to a 50 ms backend populates sum and buckets.
|
|
Send Slow Requests ${CLIENT1} 10.0.1.1 3
|
|
Wait For Flush
|
|
${prom} = Scrape With Filter source_tag=cl1
|
|
Should Match Regexp ${prom} request_duration_seconds_sum\\{[^}]*\\}\\s+\\d+\\.\\d*[1-9]
|
|
|
|
${rc} ${json} = Run And Return Rc And Output
|
|
... curl -sf -H 'Accept: application/json' '${SCRAPE_URL}?source_tag=cl1' | python3 -m json.tool
|
|
Should Be Equal As Integers ${rc} 0
|
|
Should Contain ${json} request_duration_ms
|
|
Should Contain ${json} buckets
|
|
|
|
# --- Scrape filters ---
|
|
|
|
Filter by source_tag
|
|
[Documentation] ?source_tag=cl1 returns cl1 only; cl2 only.
|
|
${output} = Scrape With Filter source_tag=cl1
|
|
Should Contain ${output} source_tag="cl1"
|
|
Should Not Contain ${output} source_tag="cl2"
|
|
|
|
${output} = Scrape With Filter source_tag=cl2
|
|
Should Contain ${output} source_tag="cl2"
|
|
Should Not Contain ${output} source_tag="cl1"
|
|
|
|
Filter by VIP
|
|
[Documentation] ?vip=10.0.1.1 excludes 10.0.2.1.
|
|
${output} = Scrape With Filter vip=10.0.1.1
|
|
Should Contain ${output} vip="10.0.1.1"
|
|
Should Not Contain ${output} vip="10.0.2.1"
|
|
|
|
Filter combined
|
|
[Documentation] source_tag + vip intersection.
|
|
${output} = Scrape With Filter source_tag=cl1&vip=10.0.1.1
|
|
Should Contain ${output} source_tag="cl1"
|
|
Should Contain ${output} vip="10.0.1.1"
|
|
Should Not Contain ${output} source_tag="cl2"
|
|
|
|
Filter unknown tag
|
|
[Documentation] Unknown source_tag returns empty data set.
|
|
${output} = Scrape With Filter source_tag=nonexistent
|
|
Should Not Contain ${output} nginx_ipng_requests_total{
|
|
|
|
# --- nginx variable ---
|
|
|
|
Variable in access log
|
|
[Documentation] $ipng_source_tag appears as cl1, cl2, direct in log.
|
|
${output} = Docker Exec ${SERVER} cat /var/log/nginx/access.log
|
|
Should Match Regexp ${output} src=cl1
|
|
Should Match Regexp ${output} src=cl2
|
|
Should Match Regexp ${output} src=direct
|
|
|
|
UDP logtail
|
|
[Documentation] ipng_stats_logtail udp:// sends log lines to a local
|
|
... nc listener; captured file has all sources and VIPs.
|
|
${output} = Docker Exec ${SERVER} cat /var/log/nginx/logtail-udp.log
|
|
Should Match Regexp ${output} cl1
|
|
Should Match Regexp ${output} cl2
|
|
Should Match Regexp ${output} direct
|
|
Should Match Regexp ${output} 10\\.0\\.1\\.1
|
|
Should Match Regexp ${output} 10\\.0\\.2\\.1
|
|
# Tab-separated format
|
|
Should Match Regexp ${output} \\t
|
|
|
|
Logtail if= filter
|
|
[Documentation] Requests to /notfound are suppressed from logtail by
|
|
... the if=$logtail_enabled condition, but still counted.
|
|
${output} = Docker Exec ${SERVER} cat /var/log/nginx/logtail-udp.log
|
|
Should Not Contain ${output} /notfound
|
|
# But /notfound IS in the regular access log (not filtered there).
|
|
${access} = Docker Exec ${SERVER} cat /var/log/nginx/access.log
|
|
Should Contain ${access} /notfound
|
|
|
|
VIP in access log
|
|
[Documentation] $server_addr resolves to real IPs, not 0.0.0.0.
|
|
${output} = Docker Exec ${SERVER} cat /var/log/nginx/access.log
|
|
Should Contain ${output} vip=10.0.1.1
|
|
Should Contain ${output} vip=10.0.2.1
|
|
Should Not Contain ${output} vip=0.0.0.0
|
|
|
|
# --- Reload resilience ---
|
|
|
|
Counters survive reload
|
|
[Documentation] Shared-memory zone persists across nginx -s reload.
|
|
${before} = Get Request Count cl1
|
|
Docker Exec ${SERVER} nginx -s reload
|
|
Sleep 2s Wait for new workers
|
|
${after} = Get Request Count cl1
|
|
Should Be True ${after} >= ${before}
|
|
... Counters dropped after reload: before=${before} after=${after}
|
|
|
|
Traffic after reload
|
|
[Documentation] New requests are counted after reload.
|
|
Send Fast Requests ${CLIENT1} 10.0.1.1 3
|
|
Wait For Flush
|
|
${output} = Scrape With Filter source_tag=cl1
|
|
Should Contain ${output} source_tag="cl1"
|
|
|
|
# --- Counter correctness ---
|
|
|
|
Request count accuracy
|
|
[Documentation] 10 requests per client yields exactly 10 delta.
|
|
${before_cl1} = Get Request Count cl1
|
|
${before_cl2} = Get Request Count cl2
|
|
Send Fast Requests ${CLIENT1} 10.0.1.1 10
|
|
Send Fast Requests ${CLIENT2} 10.0.2.1 10
|
|
Wait For Flush
|
|
${after_cl1} = Get Request Count cl1
|
|
${after_cl2} = Get Request Count cl2
|
|
${delta_cl1} = Evaluate ${after_cl1} - ${before_cl1}
|
|
${delta_cl2} = Evaluate ${after_cl2} - ${before_cl2}
|
|
Should Be Equal As Integers ${delta_cl1} 10
|
|
Should Be Equal As Integers ${delta_cl2} 10
|
|
|
|
*** Keywords ***
|
|
|
|
# --- Lab lifecycle ---
|
|
|
|
Deploy Lab
|
|
Run ${CLAB_BIN} --runtime ${runtime} destroy -t ${CURDIR}/${lab-file} --cleanup 2>&1 || true
|
|
${rc} ${output} = Run And Return Rc And Output
|
|
... ${CLAB_BIN} --runtime ${runtime} deploy -t ${CURDIR}/${lab-file}
|
|
Log ${output}
|
|
Should Be Equal As Integers ${rc} 0
|
|
Wait Until Keyword Succeeds 90s 3s Server Is Ready
|
|
Wait Until Keyword Succeeds 60s 3s Client Can Reach Server ${CLIENT1} 10.0.1.1
|
|
Wait Until Keyword Succeeds 60s 3s Client Can Reach Server ${CLIENT2} 10.0.2.1
|
|
|
|
Server Is Ready
|
|
${rc} ${output} = Run And Return Rc And Output
|
|
... curl -sf ${SCRAPE_URL}
|
|
Should Be Equal As Integers ${rc} 0
|
|
|
|
Client Can Reach Server
|
|
[Arguments] ${client} ${server_ip}
|
|
${rc} ${output} = Run And Return Rc And Output
|
|
... docker exec ${client} curl -sf http://${server_ip}:8080/
|
|
Should Be Equal As Integers ${rc} 0
|
|
|
|
Cleanup Lab
|
|
Run docker logs ${SERVER} > ${EXECDIR}/tests/out/server-docker.log 2>&1
|
|
Run docker exec ${SERVER} cat /var/log/nginx/access.log > ${EXECDIR}/tests/out/server-access.log 2>&1
|
|
Run docker exec ${SERVER} cat /var/log/nginx/error.log > ${EXECDIR}/tests/out/server-error.log 2>&1
|
|
Run docker exec ${SERVER} cat /var/log/nginx/logtail-udp.log > ${EXECDIR}/tests/out/server-logtail-udp.log 2>&1
|
|
Run docker exec ${SERVER} ip addr > ${EXECDIR}/tests/out/server-ip-addr.log 2>&1
|
|
Run docker exec ${SERVER} ip route > ${EXECDIR}/tests/out/server-ip-route.log 2>&1
|
|
Run ${CLAB_BIN} --runtime ${runtime} destroy -t ${CURDIR}/${lab-file} --cleanup
|
|
|
|
# --- Traffic generation ---
|
|
|
|
Send Fast Requests
|
|
[Arguments] ${client} ${server_ip} ${count}
|
|
FOR ${i} IN RANGE ${count}
|
|
Docker Exec ${client} curl -sf http://${server_ip}:8080/
|
|
END
|
|
|
|
Send Slow Requests
|
|
[Arguments] ${client} ${server_ip} ${count}
|
|
FOR ${i} IN RANGE ${count}
|
|
Docker Exec ${client} curl -sf http://${server_ip}:8080/slow
|
|
END
|
|
|
|
Wait For Flush
|
|
Sleep 2s
|
|
|
|
# --- Scraping ---
|
|
|
|
Scrape Prometheus
|
|
${rc} ${output} = Run And Return Rc And Output
|
|
... curl -sf ${SCRAPE_URL}
|
|
Should Be Equal As Integers ${rc} 0
|
|
RETURN ${output}
|
|
|
|
Scrape With Filter
|
|
[Arguments] ${filter}
|
|
${rc} ${output} = Run And Return Rc And Output
|
|
... curl -sf '${SCRAPE_URL}?${filter}'
|
|
Should Be Equal As Integers ${rc} 0
|
|
RETURN ${output}
|
|
|
|
Get Request Count
|
|
[Arguments] ${source}
|
|
${output} = Scrape With Filter source_tag=${source}
|
|
${matches} = Get Regexp Matches ${output}
|
|
... nginx_ipng_requests_total\\{[^}]*\\}\\s+(\\d+) 1
|
|
${total} = Set Variable 0
|
|
FOR ${m} IN @{matches}
|
|
${total} = Evaluate ${total} + ${m}
|
|
END
|
|
RETURN ${total}
|
|
|
|
# --- Container helpers ---
|
|
|
|
Docker Exec
|
|
[Arguments] ${container} ${cmd}
|
|
${rc} ${output} = Run And Return Rc And Output
|
|
... docker exec ${container} ${cmd}
|
|
Should Be Equal As Integers ${rc} 0
|
|
RETURN ${output}
|
|
|
|
Docker Exec Ignore Rc
|
|
[Arguments] ${container} ${cmd}
|
|
${rc} ${output} = Run And Return Rc And Output
|
|
... docker exec ${container} ${cmd}
|
|
RETURN ${output}
|