feat: add detection functions for native MariaDB port takeover

2026-07-05 21:25:28 +02:00
parent 00dbe93531
commit f15da3b7aa
2 changed files with 231 additions and 0 deletions
@@ -0,0 +1,115 @@
+#!/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: $*" >&2
+  exit 1
+}
+
+# Source only the detection functions, without triggering main() (main() is
+# added in Task 4, guarded behind a BASH_SOURCE check).
+NATIVE_TAKEOVER_LOG="$TMP_DIR/takeover.log" \
+  source "$SCRIPT"
+
+# --- check_os_guard: AlmaLinux 9 must pass ---
+cat > "$TMP_DIR/os-release-alma9" <<'EOF'
+ID="almalinux"
+VERSION_ID="9.4"
+PRETTY_NAME="AlmaLinux 9.4"
+EOF
+OS_RELEASE_FILE="$TMP_DIR/os-release-alma9" check_os_guard \
+  || fail "AlmaLinux 9 should pass the OS guard"
+
+# --- check_os_guard: AlmaLinux 8 must pass ---
+cat > "$TMP_DIR/os-release-alma8" <<'EOF'
+ID="almalinux"
+VERSION_ID="8.10"
+EOF
+OS_RELEASE_FILE="$TMP_DIR/os-release-alma8" check_os_guard \
+  || fail "AlmaLinux 8 should pass the OS guard"
+
+# --- check_os_guard: CloudLinux must be refused ---
+cat > "$TMP_DIR/os-release-cloudlinux" <<'EOF'
+ID="cloudlinux"
+VERSION_ID="8.9"
+ID_LIKE="rhel fedora centos"
+EOF
+if ( OS_RELEASE_FILE="$TMP_DIR/os-release-cloudlinux" check_os_guard 2>/dev/null ); then
+  fail "CloudLinux must be refused by the OS guard"
+fi
+
+# --- check_os_guard: AlmaLinux 7 (out of supported range) must be refused ---
+cat > "$TMP_DIR/os-release-alma7" <<'EOF'
+ID="almalinux"
+VERSION_ID="7.9"
+EOF
+if ( OS_RELEASE_FILE="$TMP_DIR/os-release-alma7" check_os_guard 2>/dev/null ); then
+  fail "AlmaLinux 7 must be refused by the OS guard (only 8/9 supported)"
+fi
+
+# --- read_native_mysql_conf + already_migrated ---
+cat > "$TMP_DIR/mysql.conf.3306" <<'EOF'
+user=da_admin
+passwd=secret
+port=3306
+socket=/var/lib/mysql/mysql.sock
+host=
+EOF
+NATIVE_MYSQL_CONF="$TMP_DIR/mysql.conf.3306" read_native_mysql_conf \
+  || fail "read_native_mysql_conf should succeed on a valid mysql.conf"
+[ "$NATIVE_CURRENT_USER" = "da_admin" ] || fail "expected user da_admin, got: $NATIVE_CURRENT_USER"
+[ "$NATIVE_CURRENT_PORT" = "3306" ] || fail "expected port 3306, got: $NATIVE_CURRENT_PORT"
+already_migrated && fail "already_migrated should be false when native port is still 3306"
+
+cat > "$TMP_DIR/mysql.conf.3307" <<'EOF'
+user=da_admin
+passwd=secret
+port=3307
+socket=/var/lib/mysql/mysql.sock
+host=
+EOF
+NATIVE_MYSQL_CONF="$TMP_DIR/mysql.conf.3307" read_native_mysql_conf \
+  || fail "read_native_mysql_conf should succeed on an already-migrated mysql.conf"
+already_migrated || fail "already_migrated should be true when native port is 3307"
+
+# --- read_current_mysql_inst ---
+cat > "$TMP_DIR/options.conf" <<'EOF'
+mysql_inst=mariadb
+mariadb=10.6
+EOF
+CUSTOMBUILD_OPTIONS_CONF="$TMP_DIR/options.conf" read_current_mysql_inst \
+  || fail "read_current_mysql_inst should succeed"
+[ "$NATIVE_CURRENT_MYSQL_INST" = "mariadb" ] || fail "expected mysql_inst=mariadb, got: $NATIVE_CURRENT_MYSQL_INST"
+
+# --- preflight_new_port_free using a faked `ss` on PATH ---
+mkdir -p "$TMP_DIR/bin"
+cat > "$TMP_DIR/bin/ss" <<'STUB'
+#!/bin/bash
+# Pretends port 3307 is free and port 9999 is occupied.
+for arg in "$@"; do
+  case "$arg" in
+    *:3307*) exit 0 ;;
+    *:9999*)
+      echo "header line"
+      echo "occupied line"
+      exit 0
+      ;;
+  esac
+done
+exit 0
+STUB
+chmod 755 "$TMP_DIR/bin/ss"
+
+PATH="$TMP_DIR/bin:$PATH" NEW_NATIVE_PORT="3307" preflight_new_port_free \
+  || fail "preflight_new_port_free should pass when the target port is free"
+
+if ( PATH="$TMP_DIR/bin:$PATH" NEW_NATIVE_PORT="9999" preflight_new_port_free 2>/dev/null ); then
+  fail "preflight_new_port_free should refuse when the target port is already occupied"
+fi
+
+echo "native_mariadb_port_takeover_detect_test: OK"