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# coding: utf-8 |
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"""Stakkr main controller. Used by the CLI to do all its actions.""" |
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import os |
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from platform import system as os_name |
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import subprocess |
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import sys |
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import click |
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from clint.textui import colored, puts, columns |
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from stakkr import command, docker_actions as docker, file_utils |
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from stakkr.configreader import Config |
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from stakkr.proxy import Proxy |
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class StakkrActions: |
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"""Main class that does actions asked in the cli.""" |
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def __init__(self, ctx: dict): |
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"""Set all require properties.""" |
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# Get info from config first to know the project name and project dir |
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self.config_file = ctx['CONFIG'] |
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self.config = self._get_config() |
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self.project_name = self.config['project_name'] |
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self.project_dir = self.config['project_dir'] |
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sys.path.append(self.project_dir) |
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self.context = ctx |
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self.cwd_abs = os.getcwd() |
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self.cwd_relative = self._get_relative_dir() |
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os.chdir(self.project_dir) |
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# Set some general variables |
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self.compose_base_cmd = self._get_compose_base_cmd() |
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self.cts = [] |
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self.running_cts = [] |
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def console(self, container: str, user: str, tty: bool): |
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"""Enter a container. Stakkr will try to guess the right shell.""" |
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docker.check_cts_are_running(self.project_name) |
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tty = 't' if tty is True else '' |
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ct_name = docker.get_ct_name(container) |
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cmd = ['docker', 'exec', '-u', user, '-i' + tty] |
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cmd += [docker.get_ct_name(container), docker.guess_shell(ct_name)] |
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subprocess.call(cmd) |
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command.verbose(self.context['VERBOSE'], 'Command : "' + ' '.join(cmd) + '"') |
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def get_services_urls(self): |
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"""Once started, displays a message with a list of running containers.""" |
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cts = docker.get_running_containers(self.project_name)[1] |
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text = '' |
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for ct_id, ct_info in cts.items(): |
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service_config = self.config['services'][ct_info['compose_name']] |
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if ({'service_name', 'service_url'} <= set(service_config)) is False: |
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continue |
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url = self.get_url(service_config['service_url'], ct_info['compose_name']) |
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name = colored.yellow(service_config['service_name']) |
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text += ' - For {}'.format(name).ljust(55, ' ') + ' : ' + url + '\n' |
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if 'service_extra_ports' in service_config: |
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ports = ', '.join(map(str, service_config['service_extra_ports'])) |
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text += ' '*4 + '(In your containers use the host ' |
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text += '"{}" and port(s) {})\n'.format(ct_info['compose_name'], ports) |
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return text |
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def exec_cmd(self, container: str, user: str, args: tuple, tty: bool): |
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"""Run a command from outside to any container. Wrapped into /bin/sh.""" |
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docker.check_cts_are_running(self.project_name) |
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# Protect args to avoid strange behavior in exec |
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args = ['"{}"'.format(arg) for arg in args] |
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tty = 't' if tty is True else '' |
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ct_name = docker.get_ct_name(container) |
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cmd = ['docker', 'exec', '-u', user, '-i' + tty, ct_name, 'sh', '-c'] |
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cmd += ["""test -d "/var/{0}" && cd "/var/{0}" ; exec {1}""".format(self.cwd_relative, ' '.join(args))] |
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command.verbose(self.context['VERBOSE'], 'Command : "' + ' '.join(cmd) + '"') |
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subprocess.call(cmd, stdin=sys.stdin) |
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def start(self, container: str, pull: bool, recreate: bool, proxy: bool): |
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"""If not started, start the containers defined in config.""" |
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verb = self.context['VERBOSE'] |
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debug = self.context['DEBUG'] |
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self._is_up(container) |
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if pull is True: |
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command.launch_cmd_displays_output(self.compose_base_cmd + ['pull'], verb, debug, True) |
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recreate_param = '--force-recreate' if recreate is True else '--no-recreate' |
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cmd = self.compose_base_cmd + ['up', '-d', recreate_param, '--remove-orphans'] |
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cmd += _get_single_container_option(container) |
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command.verbose(self.context['VERBOSE'], 'Command: ' + ' '.join(cmd)) |
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command.launch_cmd_displays_output(cmd, verb, debug, True) |
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self.running_cts, self.cts = docker.get_running_containers(self.project_name) |
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if self.running_cts is 0: |
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raise SystemError("Couldn't start the containers, run the start with '-v' and '-d'") |
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self._run_iptables_rules() |
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if proxy is True: |
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network_name = docker.get_network_name(self.project_name) |
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Proxy(self.config['proxy'].get('port')).start(network_name) |
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def status(self): |
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"""Return a nice table with the list of started containers.""" |
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try: |
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docker.check_cts_are_running(self.project_name) |
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except SystemError: |
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puts(colored.yellow('[INFO]') + ' stakkr is currently stopped') |
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sys.exit(0) |
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self._print_status_headers() |
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self._print_status_body() |
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def stop(self, container: str, proxy: bool): |
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"""If started, stop the containers defined in config. Else throw an error.""" |
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verb = self.context['VERBOSE'] |
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debug = self.context['DEBUG'] |
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docker.check_cts_are_running(self.project_name) |
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cmd = self.compose_base_cmd + ['stop'] + _get_single_container_option(container) |
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command.launch_cmd_displays_output(cmd, verb, debug, True) |
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self.running_cts, self.cts = docker.get_running_containers(self.project_name) |
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if self.running_cts is not 0 and container is None: |
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raise SystemError("Couldn't stop services ...") |
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if proxy is True: |
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Proxy(self.config['proxy'].get('port')).stop() |
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def _get_compose_base_cmd(self): |
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if self.context['CONFIG'] is None: |
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return ['stakkr-compose'] |
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return ['stakkr-compose', '-c', self.context['CONFIG']] |
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def _get_config(self): |
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config = Config(self.config_file) |
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main_config = config.read() |
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if main_config is False: |
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config.display_errors() |
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sys.exit(1) |
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return main_config |
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def _get_relative_dir(self): |
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if self.cwd_abs.startswith(self.project_dir): |
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return self.cwd_abs[len(self.project_dir):].lstrip('/') |
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return '' |
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def _is_up(self, container: str): |
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try: |
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docker.check_cts_are_running(self.project_name) |
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except SystemError: |
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return |
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if container is None: |
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puts(colored.yellow('[INFO]') + ' stakkr is already started ...') |
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sys.exit(0) |
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# If single container : check if that specific one is running |
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ct_name = docker.get_ct_item(container, 'name') |
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if docker.container_running(ct_name): |
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puts(colored.yellow('[INFO]') + ' service {} is already started ...'.format(container)) |
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sys.exit(0) |
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def _print_status_headers(self): |
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puts(columns( |
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[(colored.green('Container')), 16], [colored.green('IP'), 15], |
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[(colored.green('Url')), 32], [(colored.green('Image')), 32], |
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[(colored.green('Docker ID')), 15], [(colored.green('Docker Name')), 25] |
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)) |
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puts(columns( |
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['-'*16, 16], ['-'*15, 15], |
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['-'*32, 32], ['-'*32, 32], |
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['-'*15, 15], ['-'*25, 25] |
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)) |
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def _print_status_body(self): |
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self.running_cts, self.cts = docker.get_running_containers(self.project_name) |
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for container in sorted(self.cts.keys()): |
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ct_data = self.cts[container] |
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if ct_data['ip'] == '': |
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continue |
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puts(columns( |
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[ct_data['compose_name'], 16], [ct_data['ip'], 15], |
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[ct_data['traefik_host'], 32], [ct_data['image'], 32], |
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[ct_data['id'][:12], 15], [ct_data['name'], 25] |
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)) |
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def _run_iptables_rules(self): |
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"""For some containers we need to add iptables rules added from the config.""" |
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block_config = self.config['network-block'] |
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for container, ports in block_config.items(): |
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error, msg = docker.block_ct_ports(container, ports, self.project_name) |
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if error is True: |
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click.secho(msg, fg='red') |
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continue |
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command.verbose(self.context['VERBOSE'], msg) |
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def get_url(self, service_url: str, service: str): |
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"""Build URL to be displayed.""" |
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proxy_conf = self.config['proxy'] |
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# By default our URL is the IP |
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url = docker.get_ct_item(service, 'ip') |
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# If proxy enabled, display nice urls |
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if int(proxy_conf['enabled']) is 1: |
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url = docker.get_ct_item(service, 'traefik_host') |
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url += '' if int(proxy_conf['port']) is 80 else ':{}'.format(proxy_conf['port']) |
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elif os_name() in ['Windows', 'Darwin']: |
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puts(colored.yellow('[WARNING]') + ' Under Win and Mac, you need the proxy enabled') |
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return service_url.format(url) |
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def _get_single_container_option(container: str): |
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if container is None: |
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return [] |
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return [container] |
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