selfprivacy-rest-api/selfprivacy_api/migrations/migrate_to_flakes.py

303 lines
12 KiB
Python

import json
import os
import subprocess
import tempfile
import tarfile
import shutil
import time
import urllib.request
from selfprivacy_api.jobs import JobStatus, Jobs
import selfprivacy_api.actions.system as system_actions
from selfprivacy_api.migrations.migration import Migration
class MigrateToFlakes(Migration):
"""Migrate to selfprivacy Nix channel.
For some reason NixOS 22.11 servers initialized with the nixos channel instead of selfprivacy.
This stops us from upgrading to NixOS 23.05
"""
def get_migration_name(self):
return "migrate_to_flakes"
def get_migration_description(self):
return "Migrate to selfprivacy Nix flakes."
def is_migration_needed(self):
# Check if there is at least 5 GiB of free space in the root partition
# This is needed to download the new NixOS configuration
statvfs = os.statvfs("/")
free_space = statvfs.f_frsize * statvfs.f_bavail
if free_space < 5 * 1024 * 1024 * 1024:
print("===================================")
print("NOT ENOUGH FREE SPACE FOR MIGRATION")
print("===================================")
Jobs.add(
name="NixOS upgrade to 23.11",
type_id="migrations.migrate_to_flakes",
status=JobStatus.ERROR,
status_text="Not enough free space in the root partition.",
description="Migration to the modular SelfPrivacy system",
)
return False
return True
def migrate(self):
# Change the channel and update them.
current_working_directory = os.getcwd()
try:
print("===========================")
print("STARTING MIGRATION TO 23.11")
print("===========================")
os.chdir("/")
print("Disabling automatic upgrades to prevent conflicts.")
subprocess.check_output(
[
"systemctl",
"stop",
"nixos-upgrade.service",
"nixos-upgrade.timer",
]
)
print("Disabled automatic upgrades.")
print("Reading the userdata file.")
userdata_file = open(
"/etc/nixos/userdata/userdata.json", "r", encoding="utf-8"
)
userdata: dict = json.load(userdata_file)
userdata_file.close()
print("Read file. Validating contents...")
assert userdata["dns"]["provider"] is not None
assert userdata["dns"]["apiKey"] is not None
assert userdata["useBinds"] is True
assert userdata["username"] is not None
assert userdata["username"] != ""
print("Userdata file is probably fine.")
print(
"Moving old NixOS configuration from /etc/nixos to /etc/nixos.pre-flakes"
)
subprocess.check_output(
[
"mv",
"-v",
"/etc/nixos",
"/etc/nixos.pre-flakes",
]
)
assert os.path.exists("/etc/nixos.pre-flakes/userdata/userdata.json")
print("Moved")
print("Downloading the template of the new NixOS configuration")
archive_url = "https://git.selfprivacy.org/SelfPrivacy/selfprivacy-nixos-template/archive/master.tar.gz"
temp_dir = tempfile.mkdtemp()
try:
archive_path = os.path.join(temp_dir, "archive.tar.gz")
urllib.request.urlretrieve(archive_url, archive_path)
with tarfile.open(archive_path, "r:gz") as tar:
tar.extractall(path=temp_dir)
extracted_folder = os.path.join(
temp_dir, "selfprivacy-nixos-template"
)
shutil.copytree(extracted_folder, "/etc/nixos")
finally:
shutil.rmtree(temp_dir)
print("Downloaded")
print("Copying hardware-configuration.nix")
hardware_config_path = "/etc/nixos.pre-flakes/hardware-configuration.nix"
new_hardware_config_path = "/etc/nixos/hardware-configuration.nix"
with open(hardware_config_path, "r") as hardware_config_file:
hardware_config_lines = hardware_config_file.readlines()
# Check if the file contains the line with "./networking.nix" substring
hardware_config_lines = [
line for line in hardware_config_lines if "./networking.nix" not in line
]
with open(new_hardware_config_path, "w") as new_hardware_config_file:
new_hardware_config_file.writelines(hardware_config_lines)
print("Copied")
print("Checking if /etc/nixos.pre-flakes/networking.nix exists")
if os.path.exists("/etc/nixos.pre-flakes/networking.nix"):
print("Transforming networking.nix to /etc/nixos/deployment.nix")
deployment_contents = '{ lib, ... }: {\n system.stateVersion = lib.mkDefault "23.11";\n nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";\n'
with open(
"/etc/nixos.pre-flakes/networking.nix", "r"
) as networking_file:
networking_contents = networking_file.read().splitlines(True)[1:]
deployment_contents += "\n" + "".join(networking_contents)
with open("/etc/nixos/deployment.nix", "w") as file:
file.write(deployment_contents)
else:
print("Generating /etc/nixos/deployment.nix")
deployment_contents = '{ lib, ... }: {\n system.stateVersion = lib.mkDefault "23.11";\n nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";\n}'
with open("/etc/nixos/deployment.nix", "w") as file:
file.write(deployment_contents)
print("Generated.")
print("Generating the new userdata file.")
new_userdata = {
"dns": {
"provider": userdata.get("dns", {}).get("provider", "CLOUDFLARE"),
"useStagingACME": False,
},
"server": {
"provider": userdata.get("server", {}).get("provider", "HETZNER")
},
"domain": userdata.get("domain"),
"hashedMasterPassword": userdata.get("hashedMasterPassword"),
"hostname": userdata.get("hostname"),
"timezone": userdata.get("timezone", "Etc/UTC"),
"username": userdata.get("username"),
"useBinds": True,
"sshKeys": userdata.get("sshKeys", []),
"users": userdata.get("users", []),
"autoUpgrade": {
"enable": userdata.get("autoUpgrade", {}).get("enable", True),
"allowReboot": userdata.get("autoUpgrade", {}).get(
"allowReboot", False
),
},
"modules": {
"bitwarden": {
"enable": userdata.get("bitwarden", {}).get("enable", False),
"location": userdata.get("bitwarden", {}).get(
"location", "sda1"
),
},
"gitea": {
"enable": userdata.get("gitea", {}).get("enable", False),
"location": userdata.get("gitea", {}).get("location", "sda1"),
},
"jitsi-meet": {
"enable": userdata.get("jitsi", {}).get("enable", False),
},
"nextcloud": {
"enable": userdata.get("nextcloud", {}).get("enable", True),
"location": userdata.get("nextcloud", {}).get(
"location", "sda1"
),
},
"ocserv": {
"enable": userdata.get("ocserv", {}).get("enable", False),
},
"pleroma": {
"enable": userdata.get("pleroma", {}).get("enable", False),
"location": userdata.get("pleroma", {}).get("location", "sda1"),
},
"simple-nixos-mailserver": {
"enable": True,
"location": userdata.get("email", {}).get("location", "sda1"),
},
},
"volumes": userdata.get("volumes", []),
"ssh": {"rootKeys": userdata.get("ssh", {}).get("rootKeys", [])},
"stateVersion": "23.11",
}
with open("/etc/nixos/userdata.json", "w") as file:
json.dump(new_userdata, file, indent=4)
print("New userdata.json generated.")
print("Generating /etc/selfprivacy/secrets.json")
subprocess.check_output(
[
"mkdir",
"-p",
"/etc/selfprivacy",
]
)
secrets_contents = {
"databasePassword": userdata.get("databasePassword"),
"dns": {"apiKey": userdata.get("dns", {}).get("apiKey", "INVALID")},
"modules": {
"nextcloud": {
"adminPassword": userdata.get("nextcloud", {}).get(
"adminPassword", "INVALID"
),
"databasePassword": userdata.get("nextcloud", {}).get(
"databasePassword", "INVALID"
),
}
},
}
with open("/etc/selfprivacy/secrets.json", "w") as file:
json.dump(secrets_contents, file, indent=4)
os.chmod("/etc/selfprivacy/secrets.json", 0o600)
print("secrets.json generated.")
print("Building NixOS")
subprocess.check_output(
["nix", "flake", "lock", "/etc/nixos", "--update-input", "sp-modules"]
)
subprocess.check_output(
[
"nixos-rebuild",
"boot",
"--flake",
"/etc/nixos#default",
]
)
print("================================")
print(
"NixOS built. Rebooting soon!"
)
print("================================")
Jobs.add(
name="NixOS upgrade to 23.11",
type_id="migrations.migrate_to_flakes",
status=JobStatus.FINISHED,
status_text="New system built. Check your server API version: if it is 3.0.0 or higher, you've successfully migrated",
progress=100,
description="Migration to the modular SelfPrivacy system",
)
time.sleep(5)
system_actions.reboot_system()
except Exception as error:
os.chdir(current_working_directory)
print("Error")
print(error)
Jobs.add(
name="NixOS upgrade to 23.11",
type_id="migrations.migrate_to_flakes",
status=JobStatus.ERROR,
status_text=str(error),
description="Migration to the modular SelfPrivacy system",
)
# Recover the old configuration if the nixos.pre-flakes exists
if os.path.exists("/etc/nixos.pre-flakes"):
print("Recovering the old configuration")
# Move the new configuration to /etc/nixos.new
subprocess.check_output(
[
"mv",
"-v",
"/etc/nixos",
"/etc/nixos.failed",
]
)
subprocess.check_output(
[
"mv",
"-v",
"/etc/nixos.pre-flakes",
"/etc/nixos",
]
)
print("Recovered the old configuration")