feat: add config mutation and rollback for native MariaDB port takeover

2026-07-05 21:32:23 +02:00
parent 15044f0dea
commit 35b9c1af78
2 changed files with 227 additions and 0 deletions
@@ -0,0 +1,100 @@
+#!/bin/bash
+set -euo pipefail
+
+PLUGIN_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+SCRIPT="$PLUGIN_DIR/scripts/setup/native_mariadb_port_takeover.sh"
+TMP_DIR="$(mktemp -d)"
+trap 'rm -rf "$TMP_DIR"' EXIT
+
+fail() {
+  echo "FAIL: $*" >&2
+  exit 1
+}
+
+mkdir -p "$TMP_DIR/bin" "$TMP_DIR/my.cnf.d"
+CALL_LOG="$TMP_DIR/calls.log"
+
+cat > "$TMP_DIR/bin/da" <<EOF
+#!/bin/bash
+echo "\$*" >> "$CALL_LOG"
+exit 0
+EOF
+chmod 755 "$TMP_DIR/bin/da"
+
+cat > "$TMP_DIR/my.cnf" <<'EOF'
+[client]
+port=3306
+
+[mysqld]
+datadir=/var/lib/mysql
+port=3306
+socket=/var/lib/mysql/mysql.sock
+EOF
+
+cat > "$TMP_DIR/mysql.conf" <<'EOF'
+user=da_admin
+passwd=secret
+port=3306
+socket=/var/lib/mysql/mysql.sock
+host=
+EOF
+
+NATIVE_TAKEOVER_LOG="$TMP_DIR/takeover.log" \
+  source "$SCRIPT"
+
+NATIVE_MY_CNF="$TMP_DIR/my.cnf"
+NATIVE_MY_CNF_D="$TMP_DIR/my.cnf.d"
+NATIVE_MYSQL_CONF="$TMP_DIR/mysql.conf"
+NEW_NATIVE_PORT="3307"
+DA_CLI_BIN="$TMP_DIR/bin/da"
+NATIVE_CURRENT_MYSQL_INST="mariadb"
+
+# --- disable_custombuild_mysql_management ---
+: > "$CALL_LOG"
+disable_custombuild_mysql_management
+grep -Fxq "build set mysql_inst no" "$CALL_LOG" \
+  || fail "expected 'da build set mysql_inst no' to be called, got: $(cat "$CALL_LOG")"
+[ "$DID_SET_MYSQL_INST_NO" -eq 1 ] || fail "expected DID_SET_MYSQL_INST_NO to be set"
+
+# --- idempotency: already "no" must skip calling da ---
+: > "$CALL_LOG"
+DID_SET_MYSQL_INST_NO=0
+NATIVE_CURRENT_MYSQL_INST="no"
+disable_custombuild_mysql_management
+[ ! -s "$CALL_LOG" ] || fail "expected no 'da' call when mysql_inst is already 'no'"
+[ "$DID_SET_MYSQL_INST_NO" -eq 0 ] || fail "DID_SET_MYSQL_INST_NO should stay 0 when already 'no'"
+NATIVE_CURRENT_MYSQL_INST="mariadb"
+
+# --- apply_config_mutations ---
+CONFIG_BACKUPS=()
+apply_config_mutations
+
+grep -Fxq "port=3307" "$TMP_DIR/mysql.conf" \
+  || fail "expected mysql.conf port to be rewritten to 3307, got: $(cat "$TMP_DIR/mysql.conf")"
+grep -Fxq "passwd=secret" "$TMP_DIR/mysql.conf" \
+  || fail "expected mysql.conf passwd to be preserved untouched"
+
+grep -A2 '^\[mysqld\]' "$TMP_DIR/my.cnf" | grep -Fxq "port=3307" \
+  || fail "expected [mysqld] port in my.cnf to be rewritten to 3307"
+grep -A1 '^\[client\]' "$TMP_DIR/my.cnf" | grep -Fxq "port=3306" \
+  || fail "expected [client] port in my.cnf to be left at 3306 (only server sections rewritten)"
+
+[ "${#CONFIG_BACKUPS[@]}" -ge 2 ] \
+  || fail "expected at least 2 backup entries (my.cnf + mysql.conf), got ${#CONFIG_BACKUPS[@]}"
+
+# --- rollback_config_changes ---
+rollback_config_changes
+
+grep -A2 '^\[mysqld\]' "$TMP_DIR/my.cnf" | grep -Fxq "port=3306" \
+  || fail "expected [mysqld] port in my.cnf to be restored to 3306 after rollback"
+grep -Fxq "port=3306" "$TMP_DIR/mysql.conf" \
+  || fail "expected mysql.conf port to be restored to 3306 after rollback"
+
+# --- restore_custombuild_mysql_management ---
+: > "$CALL_LOG"
+DID_SET_MYSQL_INST_NO=1
+restore_custombuild_mysql_management
+grep -Fxq "build set mysql_inst mariadb" "$CALL_LOG" \
+  || fail "expected 'da build set mysql_inst mariadb' to be called on rollback, got: $(cat "$CALL_LOG")"
+
+echo "native_mariadb_port_takeover_mutation_test: OK"