From: Willy Tarreau <w@1wt.eu>
Date: Tue, 15 Sep 2026 12:09:04 +0000 (+0200)
Subject: REGTESTS: mcli: check the master and worker unique identifiers
X-Git-Tag: v3.5-dev7~4
X-Git-Url: https://git.kaiwu.me/?a=commitdiff_plain;h=fc0e50f42d275e00dd8349b24f4baed69ee15783;p=haproxy.git

REGTESTS: mcli: check the master and worker unique identifiers

The test forces the worker's ID from the configuration so that it can be
matched exactly, both from the "worker_id" sample fetch function, from
$HAPROXY_WORKER_ID and from "show info", while the master's one, which is
generated, is matched against the UUID version 7 format, in the master's
environment, in "show info" and through the "master_id" sample fetch
function.

A second instance runs without a master and lets its worker ID be
generated, which permits to check that "master_id" then finds nothing and
that the generated identifier matches its exported copy.

Both instances also verify what "stats show-node" reports on the HTML
page, with and without a master.
---

diff --git a/reg-tests/mcli/mcli_proc_ids.vtc b/reg-tests/mcli/mcli_proc_ids.vtc
new file mode 100644
index 000000000..39aa73c61
--- /dev/null
+++ b/reg-tests/mcli/mcli_proc_ids.vtc
@@ -0,0 +1,103 @@
+#EXCLUDE_TARGETS=osx
+varnishtest "Unique identifiers of the master and worker processes"
+
+feature ignore_unknown_macro
+
+# h1 forces the worker's ID so that it can be matched exactly, while the
+# master's one is randomly generated, hence only its format is checked: it must
+# be a UUID version 7, whose version nibble is 7 and whose variant bits are 10.
+haproxy h1 -Ws -S -conf {
+    global
+    .if feature(THREAD)
+        thread-groups 1
+    .endif
+        worker-id my-worker.1
+
+    defaults
+        mode http
+        timeout connect "${HAPROXY_TEST_TIMEOUT-5s}"
+        timeout client  "${HAPROXY_TEST_TIMEOUT-5s}"
+        timeout server  "${HAPROXY_TEST_TIMEOUT-5s}"
+
+    frontend myfrontend
+        bind "fd@${my_fe}"
+        stats enable
+        stats uri /stats
+        stats show-node
+        http-request return status 200 hdr x-worker "%[worker_id]" hdr x-cfg-worker "$HAPROXY_WORKER_ID" hdr x-master "%[master_id]" if { path / }
+} -start
+
+# h2 has no master and lets its worker ID be generated, so that the generated
+# value and its exported copy can be compared to each other.
+haproxy h2 -conf {
+    global
+    .if feature(THREAD)
+        thread-groups 1
+    .endif
+
+    defaults
+        mode http
+        timeout connect "${HAPROXY_TEST_TIMEOUT-5s}"
+        timeout client  "${HAPROXY_TEST_TIMEOUT-5s}"
+        timeout server  "${HAPROXY_TEST_TIMEOUT-5s}"
+
+    frontend myfrontend
+        bind "fd@${my_fe}"
+        stats enable
+        stats uri /stats
+        stats show-node
+        http-request return status 200 hdr x-worker "%[worker_id]" hdr x-cfg-worker "$HAPROXY_WORKER_ID" hdr x-master "%[master_id]" if { path / }
+} -start
+
+# the forced worker ID is seen both by the sample fetch function and by
+# $HAPROXY_WORKER_ID, and the master's one is a UUID v7
+client c1 -connect ${h1_my_fe_sock} {
+    txreq -url /
+    rxresp
+    expect resp.status == 200
+    expect resp.http.x-worker == "my-worker.1"
+    expect resp.http.x-cfg-worker == "my-worker.1"
+    expect resp.http.x-master ~ "^[0-9a-f]{8}-[0-9a-f]{4}-7[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
+} -run
+
+# "stats show-node" reports the master first, then the worker
+client c2 -connect ${h1_my_fe_sock} {
+    txreq -url /stats
+    rxresp
+    expect resp.status == 200
+    expect resp.body ~ "<b>master-id = </b> [0-9a-f-]{36}; <b>worker-id = </b> my-worker.1<br>"
+} -run
+
+# without a master, the "master_id" sample fetch function finds nothing, and
+# the generated worker ID is a UUID v7 which matches its exported copy
+client c3 -connect ${h2_my_fe_sock} {
+    txreq -url /
+    rxresp
+    expect resp.status == 200
+    expect resp.http.x-master == <undef>
+    expect resp.http.x-worker ~ "^[0-9a-f]{8}-[0-9a-f]{4}-7[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
+    expect resp.http.x-cfg-worker == resp.http.x-worker
+} -run
+
+# and only the worker is reported on the stats page
+client c4 -connect ${h2_my_fe_sock} {
+    txreq -url /stats
+    rxresp
+    expect resp.status == 200
+    expect resp.body ~ "<b>worker-id = </b> [0-9a-f-]{36}<br>"
+    expect resp.body !~ "master-id"
+} -run
+
+haproxy h2 -wait
+
+haproxy h1 -mcli {
+    delay 0.1
+    send "show env"
+    expect ~ ".*\nHAPROXY_MASTER_ID=[0-9a-f-]{36}\n.*"
+    send "@1 show env"
+    expect ~ ".*\nHAPROXY_WORKER_ID=my-worker.1\n.*"
+    send "@1 show info"
+    expect ~ ".*\nMaster_id: [0-9a-f-]{36}\n.*"
+    send "@1 show info"
+    expect ~ ".*\nWorker_id: my-worker.1\n.*"
+} -wait