272 lines
9.3 KiB
Python
272 lines
9.3 KiB
Python
#!/usr/bin/env python3
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import json
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import os
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import shlex
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import socket
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import subprocess
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import sys
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from http import HTTPStatus
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from http.server import SimpleHTTPRequestHandler, ThreadingHTTPServer
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from pathlib import Path
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ROOT_DIR = Path(__file__).resolve().parent
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PROJECT_DIR = ROOT_DIR.parent
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DASHBOARD_DIR = ROOT_DIR / "dashboard"
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CONFIG_PATH = ROOT_DIR / "manager" / "config.json"
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MANAGER_DIR = ROOT_DIR / "manager"
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RECOVERY_COMMANDS_PATH = PROJECT_DIR / "docker-run-commands.sh"
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sys.path.insert(0, str(MANAGER_DIR))
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from config_model import compact_config, normalize_config # noqa: E402
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def shell_quote(value):
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return shlex.quote(str(value))
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def append_option(lines, option, value=None):
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if value is None or value == "":
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return
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if value is True:
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lines.append(f" {option} \\")
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else:
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lines.append(f" {option} {shell_quote(value)} \\")
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def build_docker_run_command(user, image_name, publish_port=False):
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lines = [
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"docker run -d \\",
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f" --name {shell_quote(user['container_name'])} \\",
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" --restart always \\",
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]
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if publish_port:
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lines.append(f" -p {int(user['port'])}:3000 \\")
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for volume_name, mount_path in (user.get("volumes") or {}).items():
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lines.append(f" --volume {shell_quote(f'{volume_name}:{mount_path}:rw')} \\")
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for key, value in (user.get("environment") or {}).items():
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lines.append(f" --env {shell_quote(f'{key}={value}')} \\")
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append_option(lines, "--memory", user.get("mem_limit"))
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append_option(lines, "--memory-swap", user.get("memswap_limit"))
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if user.get("privileged"):
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lines.append(" --privileged \\")
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for target, options in (user.get("tmpfs") or {}).items():
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tmpfs_value = target if not options else f"{target}:{options}"
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lines.append(f" --tmpfs {shell_quote(tmpfs_value)} \\")
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for dns_server in user.get("dns") or []:
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lines.append(f" --dns {shell_quote(dns_server)} \\")
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for host, address in (user.get("extra_hosts") or {}).items():
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lines.append(f" --add-host {shell_quote(f'{host}:{address}')} \\")
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lines.extend([
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" --tty \\",
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" --interactive \\",
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f" {shell_quote(image_name)}",
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])
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return "\n".join(lines)
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def write_recovery_commands(config):
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image_name = os.getenv("FIS_APP_IMAGE") or os.getenv("APP_IMAGE_NAME") or "fis"
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normalized = normalize_config(config)
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lines = [
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"#!/bin/bash",
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"set -euo pipefail",
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"",
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"# Generated by ./configure.sh from manager-solution/manager/config.json.",
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"# These commands recreate/start the Fiscality user containers directly with Docker.",
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"# The manager normally proxies user ports; the first command block matches the manager",
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"# container creation and does not publish ports.",
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"",
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]
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for user in normalized["users"]:
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lines.extend([
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f"# User: {user['id']} - manager-equivalent container",
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f"docker volume create {shell_quote(next(iter(user['volumes'].keys())))} >/dev/null",
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])
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for volume_name in list(user["volumes"].keys())[1:]:
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lines.append(f"docker volume create {shell_quote(volume_name)} >/dev/null")
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lines.append(build_docker_run_command(user, image_name, publish_port=False))
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lines.extend([
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"",
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f"# Emergency direct access for {user['id']} on host port {user['port']}:",
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f"# docker rm -f {shell_quote(user['container_name'])} || true",
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])
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for command_line in build_docker_run_command(user, image_name, publish_port=True).splitlines():
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lines.append(f"# {command_line}")
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lines.append("")
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RECOVERY_COMMANDS_PATH.write_text("\n".join(lines), encoding="utf-8")
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RECOVERY_COMMANDS_PATH.chmod(0o755)
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def write_recovery_commands_from_disk():
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if not CONFIG_PATH.exists():
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return
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with CONFIG_PATH.open(encoding="utf-8") as handle:
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write_recovery_commands(json.load(handle))
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def detect_lan_ip():
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configured_ip = os.getenv("CONFIGURATOR_PUBLIC_IP")
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if configured_ip:
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return configured_ip
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try:
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output = subprocess.check_output(
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["ip", "route", "get", "1.1.1.1"],
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stderr=subprocess.DEVNULL,
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text=True,
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).strip()
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parts = output.split()
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if "src" in parts:
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candidate = parts[parts.index("src") + 1]
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if is_public_configurator_ip(candidate):
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return candidate
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except (OSError, subprocess.SubprocessError, IndexError):
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pass
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try:
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output = subprocess.check_output(
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["ip", "-o", "-4", "addr", "show", "scope", "global"],
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stderr=subprocess.DEVNULL,
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text=True,
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)
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for line in output.splitlines():
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parts = line.split()
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interface = parts[1]
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candidate = parts[3].split("/", 1)[0]
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if is_ignored_interface(interface):
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continue
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if is_public_configurator_ip(candidate):
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return candidate
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except (OSError, subprocess.SubprocessError, IndexError):
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pass
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try:
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output = subprocess.check_output(["hostname", "-I"], stderr=subprocess.DEVNULL, text=True).strip()
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for candidate in output.split():
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if is_public_configurator_ip(candidate):
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return candidate
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except (OSError, subprocess.SubprocessError):
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pass
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try:
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with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock:
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sock.connect(("8.8.8.8", 80))
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candidate = sock.getsockname()[0]
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if is_public_configurator_ip(candidate):
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return candidate
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except OSError:
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pass
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candidate = socket.gethostbyname(socket.gethostname())
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if is_public_configurator_ip(candidate):
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return candidate
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return "127.0.0.1"
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def is_ignored_interface(interface):
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ignored_prefixes = ("docker", "br-", "veth", "virbr", "podman", "lo")
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return interface.startswith(ignored_prefixes)
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def is_public_configurator_ip(candidate):
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if not candidate or "." not in candidate:
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return False
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if candidate.startswith("127.") or candidate.startswith("169.254."):
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return False
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if candidate.startswith("172.17."):
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return False
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return True
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class ConfiguratorHandler(SimpleHTTPRequestHandler):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, directory=str(DASHBOARD_DIR), **kwargs)
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def do_GET(self):
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if self.path == "/api/config":
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try:
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self._send_json(self._read_config())
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except ValueError as exc:
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self._send_json({"ok": False, "error": str(exc)}, status=HTTPStatus.BAD_REQUEST)
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return
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return super().do_GET()
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def do_POST(self):
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if self.path != "/api/config":
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self.send_error(HTTPStatus.NOT_FOUND, "Unknown endpoint")
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return
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try:
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content_length = int(self.headers.get("Content-Length", "0"))
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payload = self.rfile.read(content_length)
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raw = json.loads(payload.decode("utf-8"))
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normalized = normalize_config(raw)
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compact = compact_config(raw)
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CONFIG_PATH.write_text(json.dumps(compact, indent=2) + "\n", encoding="utf-8")
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write_recovery_commands(compact)
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except ValueError as exc:
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self._send_json({"ok": False, "error": str(exc)}, status=HTTPStatus.BAD_REQUEST)
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return
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except json.JSONDecodeError as exc:
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self._send_json({"ok": False, "error": f"Invalid JSON: {exc}"}, status=HTTPStatus.BAD_REQUEST)
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return
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self._send_json({"ok": True, "config": compact, "normalized": normalized})
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def log_message(self, format, *args):
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return
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def _read_config(self):
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if not CONFIG_PATH.exists():
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return {
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"defaults": {
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"container_prefix": "fis-",
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"volumes": {"v-conf-{id}": "/config"},
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"environment": {"PUID": "1000", "PGID": "1000"},
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"mem_limit": "3g",
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"memswap_limit": "5g",
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"privileged": True,
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},
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"users": [],
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}
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with CONFIG_PATH.open(encoding="utf-8") as handle:
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return compact_config(json.load(handle))
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def _send_json(self, payload, status=HTTPStatus.OK):
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body = json.dumps(payload, indent=2).encode("utf-8")
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self.send_response(status)
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self.send_header("Content-Type", "application/json; charset=utf-8")
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self.send_header("Content-Length", str(len(body)))
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self.end_headers()
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self.wfile.write(body)
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def main():
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bind_host = os.getenv("CONFIGURATOR_BIND_HOST", "0.0.0.0")
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public_host = detect_lan_ip()
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port = int(os.getenv("CONFIGURATOR_PORT", "8765"))
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try:
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write_recovery_commands_from_disk()
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except ValueError as exc:
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print(f"Could not generate {RECOVERY_COMMANDS_PATH.name}: {exc}", flush=True)
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server = ThreadingHTTPServer((bind_host, port), ConfiguratorHandler)
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print(f"Configurator available at http://{public_host}:{port}", flush=True)
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print(f"Docker recovery commands: {RECOVERY_COMMANDS_PATH}", flush=True)
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server.serve_forever()
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if __name__ == "__main__":
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main()
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