Shadow database demotion checks from native path

checksums/SHA256SUMS

@@ -2,7 +2,7 @@
 5aa02fa065d1dba55486838fa4f0cd8eba982edaaf73cdc7d818223a09cbadc6  ocf/loxthelion/managed-container
 10932919c4339b553c7c9dbf30b45a917c51c0a08f362e12678003d58b12fa82  ocf/loxthelion/managed-container.d/applications/postgresql/auth.sh
 61d64b4a3a15c354f101ef34c5dc0425723f4204207d359b5377d2b9f04f6b23  ocf/loxthelion/managed-container.d/applications/postgresql/demote.sh
-38323b217204132e572a9b1cfec8072773e502e49d6f0f96dfa2e565d332bbd1  ocf/loxthelion/managed-container.d/applications/postgresql/native_peers.sh
+98f2940d866fce1ed9a532129cbcc3e2b3aa34787866a326ca64626972593b80  ocf/loxthelion/managed-container.d/applications/postgresql/native_peers.sh
 bcfde96b98f4727a8c97d42a39b7c6ec925b1b89d17ef67cc58eb7bd67afbfae  ocf/loxthelion/managed-container.d/applications/postgresql/notify.sh
 957a5a72ed277d0216e070abb80733483be3d421b9fa488e27fdd75bb2919548  ocf/loxthelion/managed-container.d/applications/postgresql/peer_config.sh
 5091bc554915d1450fe939f94c0b0a370fecdb2ae5db9c4f0f55c340c0145519  ocf/loxthelion/managed-container.d/applications/postgresql/plugin.sh
@@ -23,7 +23,8 @@ a42bb59a058ffeb59c1baa96e403856910bbbaea98f9104ff93daf4b5970c780  postgres-host/
 957a5a72ed277d0216e070abb80733483be3d421b9fa488e27fdd75bb2919548  postgres-host/postgres-ha-peer-config.sh
 deb09e3ae40629f43b262ba4f9a7ebf59a1dca3da9d8c94478f670aea28bd0e1  quadlet/postgres.container
 04a125068677bbee6e71d313ca9d95d35faa32851b79de781cd7b9f466561445  quadlet/postgres.env.example
-cd883d7defcbdd8911aece12160122efd896a47661d1ab86f676ee3d56733b3e  tests/run-all.sh
+cf2c9ea8aa6dada519df2305218907fa93fb5a09f0999bcc62fdd3728c3ce7c5  tests/run-all.sh
+22d3eb56e8cd3ae1a58e2616f44abd3818f79d7e5df55c1c158e36dca7c77f42  tests/test-demote-database-shadow.sh
 5e5d4fdd2b6c7e0b8b146de7aad06c1f96b221a10fec525b00d40e0d85709fb0  tests/test-entrypoint-structure.sh
 2faee72cf2fdcbfa667c3e1c2a7aabc053b96a9b8127ff7440ddb717fd2dc314  tests/test-notify-daemon-shadow.sh
 9150004af86a819d7d1b5ae2b3fa9d4ddd0480f55babd094137052109864b057  tests/test-notify-target-shadow.sh

ocf/loxthelion/managed-container.d/applications/postgresql/native_peers.sh

@@ -29,6 +29,59 @@ mc_peer_write_recovery \"\$PGDATA\" \"\$1\" \"\$2\" \"\$3\" \"\$4\" \"\$5\"" sh
         "${REPLICATION_USER}" "${OCF_RESKEY_CRM_meta_on_node:-$(hostname)}" "${REPLICATION_SLOT}"
 }
 
+mc_pg_demote_database_shadow()
+{
+    local socket_path resource response rc
+
+    socket_path="${MC_PROXY_SOCKET:-/run/user/1000/managed-containerd/managed-containerd.sock}"
+    resource="${OCF_RESOURCE_INSTANCE:-}"
+    resource="${resource%%:*}"
+
+    [ -n "${resource}" ] || return 0
+
+    response="$(
+        timeout --kill-after=1s 5s \
+            python3 \
+            "${MC_PROXY_CLIENT:-/usr/lib/ocf/resource.d/loxthelion/managed-container.d/proxy_client.py}" \
+            "${socket_path}" \
+            "${resource}" \
+            "demote.database" \
+            10 \
+            11
+    )"
+    rc=$?
+
+    if [ "${rc}" -ne 0 ]; then
+        ocf_log warn \
+            "managed-containerd demote.database shadow unavailable rc=${rc}"
+        return 0
+    fi
+
+    if MC_DAEMON_RESPONSE="${response}" python3 -c '
+import json
+import os
+
+response = json.loads(os.environ["MC_DAEMON_RESPONSE"])
+
+if (
+    response.get("ocf_rc") != 0
+    or response.get("ready") is not True
+    or response.get("mutation") is not False
+    or response.get("final_handoff_required") is not True
+):
+    raise SystemExit(1)
+'; then
+        ocf_log info \
+            "managed-containerd demote.database shadow: comparison=MATCH response=${response}"
+    else
+        ocf_log err \
+            "managed-containerd demote.database shadow MISMATCH response=${response}"
+    fi
+
+    return 0
+}
+
+
 mc_pg_native_demote()
 (
     local mc_native_started=${SECONDS}
@@ -100,6 +153,8 @@ mc_pg_native_demote()
         return "${OCF_ERR_GENERIC}"
     }
 
+    mc_pg_demote_database_shadow
+
     if [ "$(printf '%s' "${target_node}" | tr '[:upper:]' '[:lower:]')" = \
          "$(printf '%s' "${local_node}" | tr '[:upper:]' '[:lower:]')" ]; then
         self_restart=true

tests/run-all.sh

@@ -26,6 +26,7 @@ python3 ./tests/test-proxy-client-actions.py
 python3 ./tests/test-proxy-client-parameters.py
 ./tests/test-notify-daemon-shadow.sh
 ./tests/test-notify-target-shadow.sh
+./tests/test-demote-database-shadow.sh
 
 echo
 echo ">>> Python syntax"

tests/test-demote-database-shadow.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)"
+FILE="$ROOT/ocf/loxthelion/managed-container.d/applications/postgresql/native_peers.sh"
+
+grep -q '^mc_pg_demote_database_shadow()' "$FILE"
+grep -q '"demote.database"' "$FILE"
+grep -q 'final_handoff_required' "$FILE"
+grep -q 'comparison=MATCH' "$FILE"
+grep -q 'demote.database shadow MISMATCH' "$FILE"
+
+echo "DEMOTE_DATABASE_SHADOW_TEST_PASS=1"