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
@@ -107,6 +107,133 @@ preflight_new_port_free() {
  log "Port docelowy $NEW_NATIVE_PORT jest wolny."
 }

+DID_SET_MYSQL_INST_NO=0
+CONFIG_BACKUPS=()
+
+disable_custombuild_mysql_management() {
+  if [ "$NATIVE_CURRENT_MYSQL_INST" = "no" ]; then
+    log "mysql_inst jest już ustawione na 'no' - pomijam."
+    return 0
+  fi
+  "$DA_CLI_BIN" build set mysql_inst no >>"$LOG_FILE" 2>&1 \
+    || die "Nie udało się ustawić mysql_inst=no przez '$DA_CLI_BIN build set mysql_inst no'."
+  DID_SET_MYSQL_INST_NO=1
+  log "Ustawiono mysql_inst=no przez CustomBuild."
+}
+
+restore_custombuild_mysql_management() {
+  [ "$DID_SET_MYSQL_INST_NO" -eq 1 ] || return 0
+  "$DA_CLI_BIN" build set mysql_inst "$NATIVE_CURRENT_MYSQL_INST" >>"$LOG_FILE" 2>&1 \
+    || log "OSTRZEŻENIE: nie udało się przywrócić mysql_inst=$NATIVE_CURRENT_MYSQL_INST."
+  log "Przywrócono mysql_inst=$NATIVE_CURRENT_MYSQL_INST."
+}
+
+backup_config_file() {
+  local file="$1"
+  local backup
+  backup="${file}.bak.$(date +%Y%m%d%H%M%S)"
+  cp -a "$file" "$backup"
+  CONFIG_BACKUPS+=("$file:$backup")
+  log "Utworzono kopię zapasową $file jako $backup."
+}
+
+rewrite_port_in_file() {
+  local file="$1" new_port="$2"
+  local tmp changed=0
+
+  [ -r "$file" ] || return 1
+  tmp="$(mktemp)"
+
+  awk -v new_port="$new_port" '
+    BEGIN { in_section = 0; changed = 0 }
+    /^[[:space:]]*\[[^]]+\][[:space:]]*$/ {
+      section = tolower($0)
+      gsub(/^[[:space:]]*\[[[:space:]]*/, "", section)
+      gsub(/[[:space:]]*\][[:space:]]*$/, "", section)
+      in_section = (section == "mysqld" || section == "mariadb" || section == "server")
+      print
+      next
+    }
+    in_section && /^[[:space:]]*port[[:space:]]*=/ {
+      print "port=" new_port
+      changed = 1
+      next
+    }
+    { print }
+    END { if (changed) exit 0; else exit 1 }
+  ' "$file" > "$tmp"
+  local awk_status=$?
+
+  if [ "$awk_status" -eq 0 ]; then
+    cp "$tmp" "$file"
+    changed=1
+  fi
+  rm -f "$tmp"
+  [ "$changed" -eq 1 ]
+}
+
+find_and_rewrite_native_port_configs() {
+  local any_changed=0
+  local f
+
+  for f in "$NATIVE_MY_CNF" "$NATIVE_MY_CNF_D"/*.cnf; do
+    [ -f "$f" ] || continue
+    if grep -Eq '^[[:space:]]*port[[:space:]]*=[[:space:]]*3306[[:space:]]*$' "$f"; then
+      backup_config_file "$f"
+      if rewrite_port_in_file "$f" "$NEW_NATIVE_PORT"; then
+        any_changed=1
+        log "Zaktualizowano port w $f."
+      fi
+    fi
+  done
+
+  if [ "$any_changed" -eq 0 ]; then
+    backup_config_file "$NATIVE_MY_CNF"
+    if grep -Eq '^[[:space:]]*\[mysqld\][[:space:]]*$' "$NATIVE_MY_CNF"; then
+      awk -v new_port="$NEW_NATIVE_PORT" '
+        { print }
+        /^[[:space:]]*\[mysqld\][[:space:]]*$/ && !done { print "port=" new_port; done=1 }
+      ' "$NATIVE_MY_CNF" > "${NATIVE_MY_CNF}.tmp" && mv "${NATIVE_MY_CNF}.tmp" "$NATIVE_MY_CNF"
+    else
+      printf '\n[mysqld]\nport=%s\n' "$NEW_NATIVE_PORT" >> "$NATIVE_MY_CNF"
+    fi
+    log "Brak istniejącej dyrektywy port= w sekcji serwera - dodano port=$NEW_NATIVE_PORT do $NATIVE_MY_CNF."
+  fi
+}
+
+update_native_mysql_conf_port() {
+  local target_port="$1"
+  local tmp
+  tmp="$(mktemp)"
+  awk -v new_port="$target_port" '
+    BEGIN { done = 0 }
+    /^[[:space:]]*port[[:space:]]*=/ { print "port=" new_port; done=1; next }
+    { print }
+    END { if (!done) print "port=" new_port }
+  ' "$NATIVE_MYSQL_CONF" > "$tmp"
+  cp "$tmp" "$NATIVE_MYSQL_CONF"
+  rm -f "$tmp"
+}
+
+apply_config_mutations() {
+  backup_config_file "$NATIVE_MYSQL_CONF"
+  find_and_rewrite_native_port_configs
+  update_native_mysql_conf_port "$NEW_NATIVE_PORT"
+  log "Zaktualizowano $NATIVE_MYSQL_CONF na port $NEW_NATIVE_PORT."
+}
+
+rollback_config_changes() {
+  local pair file backup
+  for pair in "${CONFIG_BACKUPS[@]}"; do
+    file="${pair%%:*}"
+    backup="${pair#*:}"
+    if [ -r "$backup" ]; then
+      cp -a "$backup" "$file"
+      log "Przywrócono $file z kopii zapasowej $backup."
+    fi
+  done
+}
+
 [ -r "$COMMON_FILE" ] || die "missing helper: $COMMON_FILE"
 # shellcheck source=./mysql_common.sh
 source "$COMMON_FILE"