#! /usr/bin/python3 # -*- coding: utf-8 -*- # https://docs.docker.com/compose/compose-file/#service-configuration-reference # https://docs.docker.com/samples/ # https://docs.docker.com/compose/gettingstarted/ # https://docs.docker.com/compose/django/ # https://docs.docker.com/compose/wordpress/ from __future__ import print_function import sys import os import argparse import subprocess import textwrap import time import re import hashlib import random import json from threading import Thread import shlex try: from shlex import quote as cmd_quote except ImportError: from pipes import quote as cmd_quote # import fnmatch # fnmatch.fnmatchcase(env, "*_HOST") import yaml from dotenv import dotenv_values __version__ = '0.1.10' PY3 = sys.version_info[0] == 3 if PY3: basestring = str # helper functions is_str = lambda s: isinstance(s, basestring) is_dict = lambda d: isinstance(d, dict) is_list = lambda l: not is_str(l) and not is_dict(l) and hasattr(l, "__iter__") # identity filter filteri = lambda a: filter(lambda i: i, a) def try_int(i, fallback=None): try: return int(i) except ValueError: pass except TypeError: pass return fallback def try_float(i, fallback=None): try: return float(i) except ValueError: pass except TypeError: pass return fallback dir_re = re.compile("^[~/\.]") propagation_re = re.compile("^(?:z|Z|O|U|r?shared|r?slave|r?private|r?unbindable|r?bind|(?:no)?(?:exec|dev|suid))$") norm_re = re.compile('[^-_a-z0-9]') num_split_re = re.compile(r'(\d+|\D+)') PODMAN_CMDS = ( "pull", "push", "build", "inspect", "run", "start", "stop", "rm", "volume", ) def ver_as_list(a): return [try_int(i, i) for i in num_split_re.findall(a)] def strverscmp_lt(a, b): a_ls = ver_as_list(a or '') b_ls = ver_as_list(b or '') return a_ls < b_ls def parse_short_mount(mount_str, basedir): mount_a = mount_str.split(':') mount_opt_dict = {} mount_opt = None if len(mount_a) == 1: # Anonymous: Just specify a path and let the engine creates the volume # - /var/lib/mysql mount_src, mount_dst = None, mount_str elif len(mount_a) == 2: mount_src, mount_dst = mount_a # dest must start with / like /foo:/var/lib/mysql # otherwise it's option like /var/lib/mysql:rw if not mount_dst.startswith('/'): mount_dst, mount_opt = mount_a mount_src = None elif len(mount_a) == 3: mount_src, mount_dst, mount_opt = mount_a else: raise ValueError("could not parse mount "+mount_str) if mount_src and dir_re.match(mount_src): # Specify an absolute path mapping # - /opt/data:/var/lib/mysql # Path on the host, relative to the Compose file # - ./cache:/tmp/cache # User-relative path # - ~/configs:/etc/configs/:ro mount_type = "bind" mount_src = os.path.realpath(os.path.join(basedir, os.path.expanduser(mount_src))) else: # Named volume # - datavolume:/var/lib/mysql mount_type = "volume" mount_opts = filteri((mount_opt or '').split(',')) for opt in mount_opts: if opt == 'ro': mount_opt_dict["read_only"] = True elif opt == 'rw': mount_opt_dict["read_only"] = False elif opt in ('consistent', 'delegated', 'cached'): mount_opt_dict["consistency"] = opt elif propagation_re.match(opt): mount_opt_dict["bind"] = dict(propagation=opt) else: # TODO: ignore raise ValueError("unknown mount option "+opt) return dict(type=mount_type, source=mount_src, target=mount_dst, **mount_opt_dict) # NOTE: if a named volume is used but not defined it # gives ERROR: Named volume "abc" is used in service "xyz" # but no declaration was found in the volumes section. # unless it's anonymous-volume def fix_mount_dict(compose, mount_dict, proj_name, srv_name): """ in-place fix mount dictionary to: - define _vol to be the corresponding top-level volume - if name is missing it would be source prefixed with project - if no source it would be generated """ # if already applied nothing todo if "_vol" in mount_dict: return mount_dict if mount_dict["type"] == "volume": vols = compose.vols source = mount_dict.get("source", None) vol = (vols.get(source, None) or {}) if source else {} name = vol.get('name', None) mount_dict["_vol"] = vol # handle anonymouse or implied volume if not source: # missing source vol["name"] = "_".join([ proj_name, srv_name, hashlib.sha256(mount_dict["target"].encode("utf-8")).hexdigest(), ]) elif not name: external = vol.get("external", None) ext_name = external.get("name", None) if isinstance(external, dict) else None vol["name"] = ext_name if ext_name else f"{proj_name}_{source}" return mount_dict # docker and docker-compose support subset of bash variable substitution # https://docs.docker.com/compose/compose-file/#variable-substitution # https://docs.docker.com/compose/env-file/ # https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html # $VARIABLE # ${VARIABLE} # ${VARIABLE:-default} default if not set or empty # ${VARIABLE-default} default if not set # ${VARIABLE:?err} raise error if not set or empty # ${VARIABLE?err} raise error if not set # $$ means $ var_re = re.compile(r""" \$(?: (?P\$) | (?P[_a-zA-Z][_a-zA-Z0-9]*) | (?:{ (?P[_a-zA-Z][_a-zA-Z0-9]*) (?: (?::?-(?P[^}]+)) | (?::?\?(?P[^}]+)) )? }) ) """, re.VERBOSE) def rec_subs(value, subs_dict): """ do bash-like substitution in value and if list of dictionary do that recursively """ if is_dict(value): value = dict([(k, rec_subs(v, subs_dict)) for k, v in value.items()]) elif is_str(value): def convert(m): if m.group("escaped") is not None: return "$" name = m.group("named") or m.group("braced") value = subs_dict.get(name) if value is not None: return "%s" % value if m.group("err") is not None: raise RuntimeError(m.group("err")) return m.group("default") or "" value = var_re.sub(convert, value) elif hasattr(value, "__iter__"): value = [rec_subs(i, subs_dict) for i in value] return value def norm_as_list(src): """ given a dictionary {key1:value1, key2: None} or list return a list of ["key1=value1", "key2"] """ if src is None: dst = [] elif is_dict(src): dst = [("{}={}".format(k, v) if v is not None else k) for k, v in src.items()] elif is_list(src): dst = list(src) else: dst = [src] return dst def norm_as_dict(src): """ given a list ["key1=value1", "key2"] return a dictionary {key1:value1, key2: None} """ if src is None: dst = {} elif is_dict(src): dst = dict(src) elif is_list(src): dst = [i.split("=", 1) for i in src if i] dst = dict([(a if len(a) == 2 else (a[0], None)) for a in dst]) elif is_str(src): key, value = src.split("=", 1) if "=" in src else (src, None) dst = {key: value} else: raise ValueError("dictionary or iterable is expected") return dst def norm_ulimit(inner_value): if is_dict(inner_value): if not inner_value.keys() & {"soft", "hard"}: raise ValueError("expected at least one soft or hard limit") soft = inner_value.get("soft", inner_value.get("hard", None)) hard = inner_value.get("hard", inner_value.get("soft", None)) return "{}:{}".format(soft, hard) elif is_list(inner_value): return norm_ulimit(norm_as_dict(inner_value)) # if int or string return as is return inner_value # transformation helpers def adj_hosts(services, cnt, dst="127.0.0.1"): """ adjust container cnt in-place to add hosts pointing to dst for services """ common_extra_hosts = [] for srv, cnts in services.items(): common_extra_hosts.append("{}:{}".format(srv, dst)) for cnt0 in cnts: common_extra_hosts.append("{}:{}".format(cnt0, dst)) extra_hosts = list(cnt.get("extra_hosts", [])) extra_hosts.extend(common_extra_hosts) # link aliases for link in cnt.get("links", []): a = link.strip().split(':', 1) if len(a) == 2: alias = a[1].strip() extra_hosts.append("{}:{}".format(alias, dst)) cnt["extra_hosts"] = extra_hosts def move_list(dst, containers, key): """ move key (like port forwarding) from containers to dst (a pod or a infra container) """ a = set(dst.get(key, None) or []) for cnt in containers: a0 = cnt.get(key, None) if a0: a.update(a0) del cnt[key] if a: dst[key] = list(a) def move_port_fw(dst, containers): """ move port forwarding from containers to dst (a pod or a infra container) """ move_list(dst, containers, "ports") def move_extra_hosts(dst, containers): """ move port forwarding from containers to dst (a pod or a infra container) """ move_list(dst, containers, "extra_hosts") # transformations transformations = {} def trans(func): transformations[func.__name__.replace("tr_", "")] = func return func @trans def tr_identity(project_name, services, given_containers): containers = [] for cnt in given_containers: containers.append(dict(cnt)) return [], containers @trans def tr_publishall(project_name, services, given_containers): containers = [] for cnt0 in given_containers: cnt = dict(cnt0, publishall=True) # adjust hosts to point to the gateway, TODO: adjust host env adj_hosts(services, cnt, '10.0.2.2') containers.append(cnt) return [], containers @trans def tr_hostnet(project_name, services, given_containers): containers = [] for cnt0 in given_containers: cnt = dict(cnt0, network_mode="host") # adjust hosts to point to localhost, TODO: adjust host env adj_hosts(services, cnt, '127.0.0.1') containers.append(cnt) return [], containers @trans def tr_cntnet(project_name, services, given_containers): containers = [] infra_name = project_name + "_infra" infra = dict( name=infra_name, image="k8s.gcr.io/pause:3.1", _service=None, service_name=None ) for cnt0 in given_containers: cnt = dict(cnt0, network_mode="container:"+infra_name) deps = cnt.get("depends_on", None) or [] deps.append(infra_name) cnt["depends_on"] = deps # adjust hosts to point to localhost, TODO: adjust host env adj_hosts(services, cnt, '127.0.0.1') if "hostname" in cnt: del cnt["hostname"] containers.append(cnt) move_port_fw(infra, containers) move_extra_hosts(infra, containers) containers.insert(0, infra) return [], containers @trans def tr_1pod(project_name, services, given_containers): """ project_name: services: {service_name: ["container_name1", "..."]}, currently only one is supported given_containers: [{}, ...] """ pod = dict(name=project_name) containers = [] for cnt0 in given_containers: cnt = dict(cnt0, pod=project_name) # services can be accessed as localhost because they are on one pod # adjust hosts to point to localhost, TODO: adjust host env adj_hosts(services, cnt, '127.0.0.1') containers.append(cnt) return [pod], containers @trans def tr_1podfw(project_name, services, given_containers): pods, containers = tr_1pod(project_name, services, given_containers) pod = pods[0] move_port_fw(pod, containers) return pods, containers def assert_volume(compose, mount_dict): """ inspect volume to get directory create volume if needed """ vol = mount_dict.get("_vol", None) if mount_dict["type"] == "bind": basedir = os.path.realpath(compose.dirname) mount_src = mount_dict["source"] mount_src = os.path.realpath(os.path.join(basedir, os.path.expanduser(mount_src))) if not os.path.exists(mount_src): try: os.makedirs(mount_src, exist_ok=True) except OSError: pass return if mount_dict["type"] != "volume" or not vol or vol.get("external", None) or not vol.get("name", None): return proj_name = compose.project_name vol_name = vol["name"] print("podman volume inspect {vol_name} || podman volume create {vol_name}".format(vol_name=vol_name)) # TODO: might move to using "volume list" # podman volume list --format '{{.Name}}\t{{.MountPoint}}' -f 'label=io.podman.compose.project=HERE' try: out = compose.podman.output([], "volume", ["inspect", vol_name]).decode('utf-8') except subprocess.CalledProcessError: labels = vol.get("labels", None) or [] args = [ "create", "--label", "io.podman.compose.project={}".format(proj_name), "--label", "com.docker.compose.project={}".format(proj_name), ] for item in norm_as_list(labels): args.extend(["--label", item]) args.append(vol_name) compose.podman.output([], "volume", args) out = compose.podman.output([], "volume", ["inspect", vol_name]).decode('utf-8') def mount_desc_to_mount_args(compose, mount_desc, srv_name, cnt_name): mount_type = mount_desc.get("type", None) vol = mount_desc.get("_vol", None) if mount_type=="volume" else None source = vol["name"] if vol else mount_desc.get("source", None) target = mount_desc["target"] opts = [] if mount_desc.get(mount_type, None): # TODO: we might need to add mount_dict[mount_type]["propagation"] = "z" mount_prop = mount_desc.get(mount_type, {}).get("propagation", None) if mount_prop: opts.append("{}-propagation={}".format(mount_type, mount_prop)) if mount_desc.get("read_only", False): opts.append("ro") if mount_type == 'tmpfs': tmpfs_opts = mount_desc.get("tmpfs", {}) tmpfs_size = tmpfs_opts.get("size", None) if tmpfs_size: opts.append("tmpfs-size={}".format(tmpfs_size)) tmpfs_mode = tmpfs_opts.get("mode", None) if tmpfs_mode: opts.append("tmpfs-mode={}".format(tmpfs_mode)) opts = ",".join(opts) if mount_type == 'bind': return "type=bind,source={source},destination={target},{opts}".format( source=source, target=target, opts=opts ).rstrip(",") elif mount_type == 'volume': return "type=volume,source={source},destination={target},{opts}".format( source=source, target=target, opts=opts ).rstrip(",") elif mount_type == 'tmpfs': return "type=tmpfs,destination={target},{opts}".format( target=target, opts=opts ).rstrip(",") else: raise ValueError("unknown mount type:"+mount_type) def container_to_ulimit_args(cnt, podman_args): ulimit = cnt.get('ulimits', []) if ulimit is not None: # ulimit can be a single value, i.e. ulimit: host if is_str(ulimit): podman_args.extend(['--ulimit', ulimit]) # or a dictionary or list: else: ulimit = norm_as_dict(ulimit) ulimit = [ "{}={}".format(ulimit_key, norm_ulimit(inner_value)) for ulimit_key, inner_value in ulimit.items()] for i in ulimit: podman_args.extend(['--ulimit', i]) def mount_desc_to_volume_args(compose, mount_desc, srv_name, cnt_name): mount_type = mount_desc["type"] if mount_type != 'bind' and mount_type != 'volume': raise ValueError("unknown mount type:"+mount_type) vol = mount_desc.get("_vol", None) if mount_type=="volume" else None source = vol["name"] if vol else mount_desc.get("source", None) if not source: raise ValueError(f"missing mount source for {mount_type} on {srv_name}") target = mount_desc["target"] opts = [] propagations = set(filteri(mount_desc.get(mount_type, {}).get("propagation", "").split(','))) if mount_type != 'bind': propagations.update(filteri(mount_desc.get('bind', {}).get("propagation", "").split(','))) opts.extend(propagations) # --volume, -v[=[[SOURCE-VOLUME|HOST-DIR:]CONTAINER-DIR[:OPTIONS]]] # [rw|ro] # [z|Z] # [[r]shared|[r]slave|[r]private]|[r]unbindable # [[r]bind] # [noexec|exec] # [nodev|dev] # [nosuid|suid] # [O] # [U] read_only = mount_desc.get("read_only", None) if read_only is not None: opts.append('ro' if read_only else 'rw') args = f'{source}:{target}' if opts: args += ':' + ','.join(opts) return args def get_mount_args(compose, cnt, volume): proj_name = compose.project_name srv_name = cnt['_service'] basedir = compose.dirname if is_str(volume): volume = parse_short_mount(volume, basedir) mount_type = volume["type"] assert_volume(compose, fix_mount_dict(compose, volume, proj_name, srv_name)) if compose._prefer_volume_over_mount: if mount_type == 'tmpfs': # TODO: --tmpfs /tmp:rw,size=787448k,mode=1777 args = volume['target'] tmpfs_opts = volume.get("tmpfs", {}) opts = [] size = tmpfs_opts.get("size", None) if size: opts.append('size={}'.format(size)) mode = tmpfs_opts.get("mode", None) if mode: opts.append('mode={}'.format(mode)) if opts: args += ':' + ','.join(opts) return ['--tmpfs', args] else: args = mount_desc_to_volume_args(compose, volume, srv_name, cnt['name']) return ['-v', args] else: args = mount_desc_to_mount_args(compose, volume, srv_name, cnt['name']) return ['--mount', args] def get_secret_args(compose, cnt, secret): secret_name = secret if is_str(secret) else secret.get('source', None) if not secret_name or secret_name not in compose.declared_secrets.keys(): raise ValueError( 'ERROR: undeclared secret: "{}", service: "{}"' .format(secret, cnt['_service']) ) declared_secret = compose.declared_secrets[secret_name] source_file = declared_secret.get('file', None) dest_file = '' secret_opts = '' target = None if is_str(secret) else secret.get('target', None) uid = None if is_str(secret) else secret.get('uid', None) gid = None if is_str(secret) else secret.get('gid', None) mode = None if is_str(secret) else secret.get('mode', None) if source_file: if not target: dest_file = '/run/secrets/{}'.format(secret_name) elif not target.startswith("/"): dest_file = '/run/secrets/{}'.format(target if target else secret_name) else: dest_file = target volume_ref = [ '--volume', '{}:{}:ro,rprivate,rbind'.format(source_file, dest_file) ] if uid or gid or mode: print( 'WARNING: Service "{}" uses secret "{}" with uid, gid, or mode.' .format(cnt['_service'], target if target else secret_name) + ' These fields are not supported by this implementation of the Compose file' ) return volume_ref # v3.5 and up added external flag, earlier the spec # only required a name to be specified. # docker-compose does not support external secrets outside of swarm mode. # However accessing these via podman is trivial # since these commands are directly translated to # podman-create commands, albiet we can only support a 1:1 mapping # at the moment if declared_secret.get('external', False) or declared_secret.get('name', None): secret_opts += ',uid={}'.format(uid) if uid else '' secret_opts += ',gid={}'.format(gid) if gid else '' secret_opts += ',mode={}'.format(mode) if mode else '' # The target option is only valid for type=env, # which in an ideal world would work # for type=mount as well. # having a custom name for the external secret # has the same problem as well ext_name = declared_secret.get('name', None) err_str = 'ERROR: Custom name/target reference "{}" for mounted external secret "{}" is not supported' if ext_name and ext_name != secret_name: raise ValueError(err_str.format(secret_name, ext_name)) elif target and target != secret_name: raise ValueError(err_str.format(target, secret_name)) elif target: print('WARNING: Service "{}" uses target: "{}" for secret: "{}".' .format(cnt['_service'], target, secret_name) + ' That is un-supported and a no-op and is ignored.') return [ '--secret', '{}{}'.format(secret_name, secret_opts) ] raise ValueError('ERROR: unparseable secret: "{}", service: "{}"' .format(secret_name, cnt['_service'])) def container_to_res_args(cnt, podman_args): # v2 < https://docs.docker.com/compose/compose-file/compose-file-v2/#cpu-and-other-resources cpus_limit_v2 = try_float(cnt.get('cpus', None), None) cpu_shares_v2 = try_int(cnt.get('cpu_shares', None), None) mem_limit_v2 = cnt.get('mem_limit', None) mem_res_v2 = cnt.get('mem_reservation', None) # v3 < https://docs.docker.com/compose/compose-file/compose-file-v3/#resources # spec < https://github.com/compose-spec/compose-spec/blob/master/deploy.md#resources deploy = cnt.get('deploy', None) or {} res = deploy.get('resources', None) or {} limits = res.get('limits', None) or {} cpus_limit_v3 = try_float(limits.get('cpus', None), None) mem_limit_v3 = limits.get('memory', None) reservations = res.get('reservations', None) or {} #cpus_res_v3 = try_float(reservations.get('cpus', None), None) mem_res_v3 = reservations.get('memory', None) # add args cpus = cpus_limit_v3 or cpus_limit_v2 if cpus: podman_args.extend(('--cpus', str(cpus),)) if cpu_shares_v2: podman_args.extend(('--cpu-shares', str(cpu_shares_v2),)) mem = mem_limit_v3 or mem_limit_v2 if mem: podman_args.extend(('-m', str(mem).lower(),)) mem_res = mem_res_v3 or mem_res_v2 if mem_res: podman_args.extend(('--memory-reservation', str(mem_res).lower(),)) def port_dict_to_str(port_desc): # NOTE: `mode: host|ingress` is ignored cnt_port = port_desc.get("target", None) published = port_desc.get("published", None) or "" host_ip = port_desc.get("host_ip", None) protocol = port_desc.get("protocol", None) or "tcp" if not cnt_port: raise ValueError("target container port must be specified") if host_ip: ret = f"{host_ip}:{published}:{cnt_port}" else: ret = f"{published}:{cnt_port}" if published else f"{cnt_port}" if protocol!="tcp": ret+= f"/{protocol}" return ret def norm_ports(ports_in): if not ports_in: ports_in = [] if isinstance(ports_in, str): ports_in = [ports_in] ports_out = [] for port in ports_in: if isinstance(port, dict): port = port_dict_to_str(port) elif not isinstance(port, str): raise TypeError("port should be either string or dict") ports_out.append(port) return ports_out def container_to_args(compose, cnt, detached=True): # TODO: double check -e , --add-host, -v, --read-only dirname = compose.dirname pod = cnt.get('pod', None) or '' podman_args = [ '--name={}'.format(cnt.get('name', None)), ] if detached: podman_args.append("-d") if pod: podman_args.append('--pod={}'.format(pod)) sec = norm_as_list(cnt.get("security_opt", None)) for s in sec: podman_args.extend(['--security-opt', s]) ann = norm_as_list(cnt.get("annotations", None)) for a in ann: podman_args.extend(['--annotation', a]) if cnt.get('read_only', None): podman_args.append('--read-only') for i in cnt.get('labels', []): podman_args.extend(['--label', i]) net = cnt.get("network_mode", None) if net: podman_args.extend(['--network', net]) for c in cnt.get('cap_add', []): podman_args.extend(['--cap-add', c]) for c in cnt.get('cap_drop', []): podman_args.extend(['--cap-drop', c]) for d in cnt.get('devices', []): podman_args.extend(['--device', d]) env_file = cnt.get('env_file', []) if is_str(env_file): env_file = [env_file] for i in env_file: i = os.path.realpath(os.path.join(dirname, i)) podman_args.extend(['--env-file', i]) env = norm_as_list(cnt.get('environment', {})) for e in env: podman_args.extend(['-e', e]) tmpfs_ls = cnt.get('tmpfs', []) if is_str(tmpfs_ls): tmpfs_ls = [tmpfs_ls] for i in tmpfs_ls: podman_args.extend(['--tmpfs', i]) for volume in cnt.get('volumes', []): podman_args.extend(get_mount_args(compose, cnt, volume)) log = cnt.get('logging') if log is not None: podman_args.append(f'--log-driver={log.get("driver", "k8s-file")}') log_opts = log.get('options') or {} podman_args += [f'--log-opt={name}={value}' for name, value in log_opts.items()] for secret in cnt.get('secrets', []): podman_args.extend(get_secret_args(compose, cnt, secret)) for i in cnt.get('extra_hosts', []): podman_args.extend(['--add-host', i]) for i in cnt.get('expose', []): podman_args.extend(['--expose', i]) if cnt.get('publishall', None): podman_args.append('-P') ports = cnt.get('ports', None) or [] if isinstance(ports, str): ports = [ports] for port in ports: if isinstance(port, dict): port = port_dict_to_str(port) elif not isinstance(port, str): raise TypeError("port should be either string or dict") podman_args.extend(['-p', port]) user = cnt.get('user', None) if user is not None: podman_args.extend(['-u', user]) if cnt.get('working_dir', None) is not None: podman_args.extend(['-w', cnt['working_dir']]) if cnt.get('hostname', None): podman_args.extend(['--hostname', cnt['hostname']]) if cnt.get('shm_size', None): podman_args.extend(['--shm-size', '{}'.format(cnt['shm_size'])]) if cnt.get('stdin_open', None): podman_args.append('-i') if cnt.get('stop_signal', None): podman_args.extend(['--stop-signal', cnt['stop_signal']]) for i in cnt.get('sysctls', []): podman_args.extend(['--sysctl', i]) if cnt.get('tty', None): podman_args.append('--tty') if cnt.get('privileged', None): podman_args.append('--privileged') pull_policy = cnt.get('pull_policy', None) if pull_policy is not None and pull_policy!='build': podman_args.extend(['--pull', pull_policy]) if cnt.get('restart', None) is not None: podman_args.extend(['--restart', cnt['restart']]) container_to_ulimit_args(cnt, podman_args) container_to_res_args(cnt, podman_args) # currently podman shipped by fedora does not package this if cnt.get('init', None): podman_args.append('--init') if cnt.get('init-path', None): podman_args.extend(['--init-path', cnt['init-path']]) entrypoint = cnt.get('entrypoint', None) if entrypoint is not None: if is_str(entrypoint): entrypoint = shlex.split(entrypoint) podman_args.extend(['--entrypoint', json.dumps(entrypoint)]) # WIP: healthchecks are still work in progress healthcheck = cnt.get('healthcheck', None) or {} if not is_dict(healthcheck): raise ValueError("'healthcheck' must be an key-value mapping") healthcheck_test = healthcheck.get('test', None) if healthcheck_test: # If it's a string, it's equivalent to specifying CMD-SHELL if is_str(healthcheck_test): # podman does not add shell to handle command with whitespace podman_args.extend(['--healthcheck-command', '/bin/sh -c {}'.format(cmd_quote(healthcheck_test))]) elif is_list(healthcheck_test): # If it's a list, first item is either NONE, CMD or CMD-SHELL. healthcheck_type = healthcheck_test.pop(0) if healthcheck_type == 'NONE': podman_args.append("--no-healthcheck") elif healthcheck_type == 'CMD': podman_args.extend(['--healthcheck-command', '/bin/sh -c {}'.format( "' '".join([cmd_quote(i) for i in healthcheck_test]) )]) elif healthcheck_type == 'CMD-SHELL': if len(healthcheck_test)!=1: raise ValueError("'CMD_SHELL' takes a single string after it") podman_args.extend(['--healthcheck-command', '/bin/sh -c {}'.format(cmd_quote(healthcheck_test[0]))]) else: raise ValueError( "unknown healthcheck test type [{}],\ expecting NONE, CMD or CMD-SHELL." .format(healthcheck_type) ) else: raise ValueError("'healthcheck.test' either a string or a list") # interval, timeout and start_period are specified as durations. if 'interval' in healthcheck: podman_args.extend(['--healthcheck-interval', healthcheck['interval']]) if 'timeout' in healthcheck: podman_args.extend(['--healthcheck-timeout', healthcheck['timeout']]) if 'start_period' in healthcheck: podman_args.extend(['--healthcheck-start-period', healthcheck['start_period']]) # convert other parameters to string if 'retries' in healthcheck: podman_args.extend(['--healthcheck-retries', '{}'.format(healthcheck['retries'])]) podman_args.append(cnt['image']) # command, ..etc. command = cnt.get('command', None) if command is not None: if is_str(command): podman_args.extend(shlex.split(command)) else: podman_args.extend([str(i) for i in command]) return podman_args def rec_deps(services, service_name, start_point=None): """ return all dependencies of service_name recursively """ if not start_point: start_point = service_name deps = services[service_name]["_deps"] for dep_name in deps.copy(): # avoid A depens on A if dep_name == service_name: continue dep_srv = services.get(dep_name, None) if not dep_srv: continue # NOTE: avoid creating loops, A->B->A if start_point and start_point in dep_srv["_deps"]: continue new_deps = rec_deps(services, dep_name, start_point) deps.update(new_deps) return deps def flat_deps(services, with_extends=False): """ create dependencies "_deps" or update it recursively for all services """ for name, srv in services.items(): deps = set() srv["_deps"] = deps if with_extends: ext = srv.get("extends", {}).get("service", None) if ext: if ext != name: deps.add(ext) continue deps_ls = srv.get("depends_on", None) or [] if is_str(deps_ls): deps_ls=[deps_ls] elif is_dict(deps_ls): deps_ls=list(deps_ls.keys()) deps.update(deps_ls) # parse link to get service name and remove alias links_ls = srv.get("links", None) or [] if not is_list(links_ls): links_ls=[links_ls] deps.update([(c.split(":")[0] if ":" in c else c) for c in links_ls]) for name, srv in services.items(): rec_deps(services, name) ################### # podman and compose classes ################### class Podman: def __init__(self, compose, podman_path='podman', dry_run=False): self.compose = compose self.podman_path = podman_path self.dry_run = dry_run def output(self, podman_args, cmd='', cmd_args=None): cmd_args = cmd_args or [] xargs = self.compose.get_podman_args(cmd) if cmd else [] cmd_ls = [self.podman_path, *podman_args, cmd] + xargs + cmd_args print(cmd_ls) return subprocess.check_output(cmd_ls) def run(self, podman_args, cmd='', cmd_args=None, wait=True, sleep=1, obj=None): if obj is not None: obj.exit_code = None cmd_args = list(map(str, cmd_args or [])) xargs = self.compose.get_podman_args(cmd) if cmd else [] cmd_ls = [self.podman_path, *podman_args, cmd] + xargs + cmd_args print(" ".join([str(i) for i in cmd_ls])) if self.dry_run: return None # subprocess.Popen(args, bufsize = 0, executable = None, stdin = None, stdout = None, stderr = None, preexec_fn = None, close_fds = False, shell = False, cwd = None, env = None, universal_newlines = False, startupinfo = None, creationflags = 0) p = subprocess.Popen(cmd_ls) if wait: exit_code = p.wait() print("exit code:", exit_code) if obj is not None: obj.exit_code = exit_code if sleep: time.sleep(sleep) return p def volume_inspect_all(self): output = self.output([], "volume", ["inspect", "--all"]).decode('utf-8') return json.loads(output) def volume_inspect_proj(self, proj=None): if not proj: proj = self.compose.project_name volumes = [(vol.get("Labels", {}), vol) for vol in self.volume_inspect_all()] volumes = [(labels.get("io.podman.compose.project", None), vol) for labels, vol in volumes] return [vol for vol_proj, vol in volumes if vol_proj==proj] def normalize_service(service): for key in ("env_file", "security_opt", "volumes"): if key not in service: continue if is_str(service[key]): service[key]=[service[key]] if "security_opt" in service: sec_ls = service["security_opt"] for ix, item in enumerate(sec_ls): if item=="seccomp:unconfined" or item=="apparmor:unconfined": sec_ls[ix] = item.replace(":", "=") for key in ("environment", "labels"): if key not in service: continue service[key] = norm_as_dict(service[key]) if "extends" in service: extends = service["extends"] if is_str(extends): extends = {"service": extends} service["extends"] = extends return service def normalize(compose): """ convert compose dict of some keys from string or dicts into arrays """ services = compose.get("services", None) or {} for service_name, service in services.items(): normalize_service(service) return compose def rec_merge_one(target, source): """ update target from source recursively """ done = set() for key, value in source.items(): if key in target: continue target[key]=value done.add(key) for key, value in target.items(): if key in done: continue if key not in source: continue value2 = source[key] if type(value2)!=type(value): raise ValueError("can't merge value of {} of type {} and {}".format(key, type(value), type(value2))) if is_list(value2): if key == 'volumes': # clean duplicate mount targets pts = set([ v.split(':', 1)[1] for v in value2 if ":" in v ]) del_ls = [ ix for (ix, v) in enumerate(value) if ":" in v and v.split(':', 1)[1] in pts ] for ix in reversed(del_ls): del value[ix] value.extend(value2) else: value.extend(value2) elif is_dict(value2): rec_merge_one(value, value2) else: target[key]=value2 return target def rec_merge(target, *sources): """ update target recursively from sources """ for source in sources: ret = rec_merge_one(target, source) return ret def resolve_extends(services, service_names, environ): for name in service_names: service = services[name] ext = service.get("extends", {}) if is_str(ext): ext = {"service": ext} from_service_name = ext.get("service", None) if not from_service_name: continue filename = ext.get("file", None) if filename: with open(filename, 'r') as f: content = yaml.safe_load(f) or {} if "services" in content: content = content["services"] content = rec_subs(content, environ) from_service = content.get(from_service_name, {}) normalize_service(from_service) else: from_service = services.get(from_service_name, {}).copy() del from_service["_deps"] try: del from_service["extends"] except KeyError: pass new_service = rec_merge({}, from_service, service) services[name] = new_service def dotenv_to_dict(dotenv_path): if not os.path.isfile(dotenv_path): return {} return dotenv_values(dotenv_path) COMPOSE_DEFAULT_LS = [ "compose.yaml", "compose.yml", "compose.override.yaml", "compose.override.yml", "podman-compose.yaml", "podman-compose.yml", "docker-compose.yml", "docker-compose.yaml", "docker-compose.override.yml", "docker-compose.override.yaml", "container-compose.yml", "container-compose.yaml", "container-compose.override.yml", "container-compose.override.yaml", ] class PodmanCompose: def __init__(self): self.podman_version = None self.exit_code = None self.commands = {} self.global_args = None self.project_name = None self.dirname = None self.pods = None self.containers = None self.vols = None self.declared_secrets = None self.container_names_by_service = None self.container_by_name = None self._prefer_volume_over_mount = True def get_podman_args(self, cmd): xargs = [] for args in self.global_args.podman_args: xargs.extend(shlex.split(args)) cmd_norm = cmd if cmd != 'create' else 'run' cmd_args = self.global_args.__dict__.get(f"podman_{cmd_norm}_args", None) or [] for args in cmd_args: xargs.extend(shlex.split(args)) return xargs def run(self): args = self._parse_args() podman_path = args.podman_path if podman_path != 'podman': if os.path.isfile(podman_path) and os.access(podman_path, os.X_OK): podman_path = os.path.realpath(podman_path) else: # this also works if podman hasn't been installed now if args.dry_run == False: sys.stderr.write("Binary {} has not been found.\n".format(podman_path)) exit(1) self.podman = Podman(self, podman_path, args.dry_run) if not args.dry_run: # just to make sure podman is running try: self.podman_version = self.podman.output(["--version"], '', []).decode('utf-8').strip() or "" self.podman_version = (self.podman_version.split() or [""])[-1] except subprocess.CalledProcessError: self.podman_version = None if not self.podman_version: sys.stderr.write("it seems that you do not have `podman` installed\n") exit(1) print("using podman version: "+self.podman_version) cmd_name = args.command if (cmd_name != "version"): self._parse_compose_file() cmd = self.commands[cmd_name] cmd(self, args) def _parse_compose_file(self): args = self.global_args cmd = args.command pathsep = os.environ.get("COMPOSE_PATH_SEPARATOR", None) or os.pathsep if not args.file: default_str = os.environ.get("COMPOSE_FILE", None) if default_str: default_ls = default_str.split(pathsep) else: default_ls = COMPOSE_DEFAULT_LS args.file = list(filter(os.path.exists, default_ls)) files = args.file if not files: print("no compose.yaml, docker-compose.yml or container-compose.yml file found, pass files with -f") exit(-1) ex = map(os.path.exists, files) missing = [ fn0 for ex0, fn0 in zip(ex, files) if not ex0 ] if missing: print("missing files: ", missing) exit(1) # make absolute relative_files = files files = list(map(os.path.realpath, files)) filename = files[0] project_name = args.project_name no_ansi = args.no_ansi no_cleanup = args.no_cleanup dry_run = args.dry_run transform_policy = args.transform_policy host_env = None dirname = os.path.realpath(os.path.dirname(filename)) dir_basename = os.path.basename(dirname) self.dirname = dirname # TODO: remove next line os.chdir(dirname) if not project_name: # More strict then actually needed for simplicity: podman requires [a-zA-Z0-9][a-zA-Z0-9_.-]* project_name = norm_re.sub('', dir_basename.lower()) if not project_name: raise RuntimeError("Project name [{}] normalized to empty".format(dir_basename)) self.project_name = project_name dotenv_path = os.path.join(dirname, ".env") self.environ = dict(os.environ) self.environ.update(dotenv_to_dict(dotenv_path)) # see: https://docs.docker.com/compose/reference/envvars/ # see: https://docs.docker.com/compose/env-file/ self.environ.update({ "COMPOSE_FILE": os.path.basename(filename), "COMPOSE_PROJECT_NAME": self.project_name, "COMPOSE_PATH_SEPARATOR": pathsep, }) compose = {'_dirname': dirname} for filename in files: with open(filename, 'r') as f: content = yaml.safe_load(f) #print(filename, json.dumps(content, indent = 2)) if not isinstance(content, dict): sys.stderr.write("Compose file does not contain a top level object: %s\n"%filename) exit(1) content = normalize(content) #print(filename, json.dumps(content, indent = 2)) content = rec_subs(content, self.environ) rec_merge(compose, content) # debug mode if len(files)>1: print(" ** merged:\n", json.dumps(compose, indent = 2)) ver = compose.get('version', None) services = compose.get('services', None) if services is None: services = {} print("WARNING: No services defined") # NOTE: maybe add "extends.service" to _deps at this stage flat_deps(services, with_extends=True) service_names = sorted([ (len(srv["_deps"]), name) for name, srv in services.items() ]) service_names = [ name for _, name in service_names] resolve_extends(services, service_names, self.environ) flat_deps(services) service_names = sorted([ (len(srv["_deps"]), name) for name, srv in services.items() ]) service_names = [ name for _, name in service_names] # volumes: [...] self.vols = compose.get('volumes', {}) podman_compose_labels = [ "io.podman.compose.config-hash=123", "io.podman.compose.project=" + project_name, "io.podman.compose.version=0.0.1", "com.docker.compose.project=" + project_name, "com.docker.compose.project.working_dir=" + dirname, "com.docker.compose.project.config_files=" + ','.join(relative_files), ] # other top-levels: # networks: {driver: ...} # configs: {...} self.declared_secrets = compose.get('secrets', {}) given_containers = [] container_names_by_service = {} self.services = services for service_name, service_desc in services.items(): replicas = try_int(service_desc.get('deploy', {}).get('replicas', '1')) container_names_by_service[service_name] = [] for num in range(1, replicas+1): name0 = "{project_name}_{service_name}_{num}".format( project_name=project_name, service_name=service_name, num=num, ) if num == 1: name = service_desc.get("container_name", name0) else: name = name0 container_names_by_service[service_name].append(name) # print(service_name,service_desc) cnt = dict(name=name, num=num, service_name=service_name, **service_desc) if 'image' not in cnt: cnt['image'] = "{project_name}_{service_name}".format( project_name=project_name, service_name=service_name, ) labels = norm_as_list(cnt.get('labels', None)) cnt["ports"] = norm_ports(cnt.get("ports", None)) labels.extend(podman_compose_labels) labels.extend([ "com.docker.compose.container-number={}".format(num), "com.docker.compose.service=" + service_name, ]) cnt['labels'] = labels cnt['_service'] = service_name cnt['_project'] = project_name given_containers.append(cnt) self.container_names_by_service = container_names_by_service container_by_name = dict([(c["name"], c) for c in given_containers]) #print("deps:", [(c["name"], c["_deps"]) for c in given_containers]) given_containers = list(container_by_name.values()) given_containers.sort(key=lambda c: len(c.get('_deps', None) or [])) #print("sorted:", [c["name"] for c in given_containers]) tr = transformations[transform_policy] pods, containers = tr( project_name, container_names_by_service, given_containers) self.pods = pods self.containers = containers self.container_by_name = dict([ (c["name"], c) for c in containers]) def _parse_args(self): parser = argparse.ArgumentParser( formatter_class=argparse.RawTextHelpFormatter ) self._init_global_parser(parser) subparsers = parser.add_subparsers(title='command', dest='command') subparser = subparsers.add_parser('help', help='show help') for cmd_name, cmd in self.commands.items(): subparser = subparsers.add_parser(cmd_name, help=cmd._cmd_desc) for cmd_parser in cmd._parse_args: cmd_parser(subparser) self.global_args = parser.parse_args() if self.global_args.version: self.global_args.command = "version" if not self.global_args.command or self.global_args.command=='help': parser.print_help() exit(-1) return self.global_args def _init_global_parser(self, parser): parser.add_argument("-v", "--version", help="show version", action='store_true') parser.add_argument("-f", "--file", help="Specify an alternate compose file (default: docker-compose.yml)", metavar='file', action='append', default=[]) parser.add_argument("-p", "--project-name", help="Specify an alternate project name (default: directory name)", type=str, default=None) parser.add_argument("--podman-path", help="Specify an alternate path to podman (default: use location in $PATH variable)", type=str, default="podman") parser.add_argument("--podman-args", help="custom global arguments to be passed to `podman`", metavar='args', action='append', default=[]) for podman_cmd in PODMAN_CMDS: parser.add_argument(f"--podman-{podman_cmd}-args", help=f"custom arguments to be passed to `podman {podman_cmd}`", metavar='args', action='append', default=[]) parser.add_argument("--no-ansi", help="Do not print ANSI control characters", action='store_true') parser.add_argument("--no-cleanup", help="Do not stop and remove existing pod & containers", action='store_true') parser.add_argument("--dry-run", help="No action; perform a simulation of commands", action='store_true') parser.add_argument("-t", "--transform_policy", help=textwrap.dedent("""\ how to translate docker compose to podman (default: 1podfw) 1podfw - create all containers in one pod (inter-container communication is done via localhost), doing port mapping in that pod 1pod - create all containers in one pod, doing port mapping in each container (does not work) identity - no mapping hostnet - use host network, and inter-container communication is done via host gateway and published ports cntnet - create a container and use it via --network container:name (inter-container communication via localhost) publishall - publish all ports to host (using -P) and communicate via gateway """), choices=['1pod', '1podfw', 'hostnet', 'cntnet', 'publishall', 'identity'], default='1podfw') podman_compose = PodmanCompose() ################### # decorators to add commands and parse options ################### class cmd_run: def __init__(self, compose, cmd_name, cmd_desc): self.compose = compose self.cmd_name = cmd_name self.cmd_desc = cmd_desc def __call__(self, func): def wrapped(*args, **kw): return func(*args, **kw) wrapped._compose = self.compose wrapped._cmd_name = self.cmd_name wrapped._cmd_desc = self.cmd_desc wrapped._parse_args = [] self.compose.commands[self.cmd_name] = wrapped return wrapped class cmd_parse: def __init__(self, compose, cmd_names): self.compose = compose self.cmd_names = cmd_names if is_list(cmd_names) else [cmd_names] def __call__(self, func): def wrapped(*args, **kw): return func(*args, **kw) for cmd_name in self.cmd_names: self.compose.commands[cmd_name]._parse_args.append(wrapped) return wrapped ################### # actual commands ################### @cmd_run(podman_compose, 'version', 'show version') def compose_version(compose, args): print("podman-composer version ", __version__) compose.podman.run(["--version"], "", [], sleep=0) def is_local(container: dict) -> bool: """Test if a container is local, i.e. if it is * prefixed with localhost/ * has a build section and is not prefixed """ return ( not "/" in container["image"] if "build" in container else container["image"].startswith("localhost/") ) @cmd_run(podman_compose, "pull", "pull stack images") def compose_pull(compose, args): img_containers = [cnt for cnt in compose.containers if "image" in cnt] images = {cnt["image"] for cnt in img_containers} if not args.force_local: local_images = {cnt["image"] for cnt in img_containers if is_local(cnt)} images -= local_images for image in images: compose.podman.run([], "pull", [image], sleep=0) @cmd_run(podman_compose, 'push', 'push stack images') def compose_push(compose, args): services = set(args.services) for cnt in compose.containers: if 'build' not in cnt: continue if services and cnt['_service'] not in services: continue compose.podman.run([], "push", [cnt["image"]], sleep=0) def build_one(compose, args, cnt): if 'build' not in cnt: return if getattr(args, 'if_not_exists', None): try: img_id = compose.podman.output([], 'inspect', ['-t', 'image', '-f', '{{.Id}}', cnt["image"]]) except subprocess.CalledProcessError: img_id = None if img_id: return build_desc = cnt['build'] if not hasattr(build_desc, 'items'): build_desc = dict(context=build_desc) ctx = build_desc.get('context', '.') dockerfile = build_desc.get("dockerfile", None) if dockerfile: dockerfile = os.path.join(ctx, dockerfile) else: dockerfile_alts = [ 'Containerfile', 'ContainerFile', 'containerfile', 'Dockerfile', 'DockerFile','dockerfile', ] for dockerfile in dockerfile_alts: dockerfile = os.path.join(ctx, dockerfile) if os.path.exists(dockerfile): break if not os.path.exists(dockerfile): raise OSError("Dockerfile not found in "+ctx) build_args = ["-t", cnt["image"], "-f", dockerfile] if "target" in build_desc: build_args.extend(["--target", build_desc["target"]]) container_to_ulimit_args(cnt, build_args) if args.no_cache: build_args.append("--no-cache") if getattr(args, 'pull_always', None): build_args.append("--pull-always") elif getattr(args, 'pull', None): build_args.append("--pull") args_list = norm_as_list(build_desc.get('args', {})) for build_arg in args_list + args.build_arg: build_args.extend(("--build-arg", build_arg,)) build_args.append(ctx) compose.podman.run([], "build", build_args, sleep=0) @cmd_run(podman_compose, 'build', 'build stack images') def compose_build(compose, args): if args.services: container_names_by_service = compose.container_names_by_service for service in args.services: try: cnt = compose.container_by_name[container_names_by_service[service][0]] except: raise ValueError("unknown service: " + service) build_one(compose, args, cnt) else: for cnt in compose.containers: build_one(compose, args, cnt) def create_pods(compose, args): for pod in compose.pods: podman_args = [ "create", "--name={}".format(pod["name"]), "--share", "net", ] if compose.podman_version and not strverscmp_lt(compose.podman_version, "3.4.0"): podman_args.append("--infra-name={}_infra".format(pod["name"])) ports = pod.get("ports", None) or [] if isinstance(ports, str): ports = [ports] for i in ports: podman_args.extend(['-p', str(i)]) compose.podman.run([], "pod", podman_args) def up_specific(compose, args): deps = [] if not args.no_deps: for service in args.services: deps.extend([]) # args.always_recreate_deps print("services", args.services) raise NotImplementedError("starting specific services is not yet implemented") def get_excluded(compose, args): excluded = set() if args.services: excluded = set(compose.services) for service in args.services: excluded-= compose.services[service]['_deps'] excluded.discard(service) print("** excluding: ", excluded) return excluded @cmd_run(podman_compose, 'up', 'Create and start the entire stack or some of its services') def compose_up(compose, args): excluded = get_excluded(compose, args) if not args.no_build: # `podman build` does not cache, so don't always build build_args = argparse.Namespace( if_not_exists=(not args.build), **args.__dict__) compose.commands['build'](compose, build_args) # TODO: implement check hash label for change if args.force_recreate: down_args = argparse.Namespace(**dict(args.__dict__, volumes=False)) compose.commands['down'](compose, down_args) # args.no_recreate disables check for changes (which is not implemented) podman_command = 'run' if args.detach and not args.no_start else 'create' create_pods(compose, args) for cnt in compose.containers: if cnt["_service"] in excluded: print("** skipping: ", cnt['name']) continue podman_args = container_to_args(compose, cnt, detached=args.detach) subproc = compose.podman.run([], podman_command, podman_args) if podman_command == 'run' and subproc and subproc.returncode: compose.podman.run([], 'start', [cnt['name']]) if args.no_start or args.detach or args.dry_run: return # TODO: handle already existing # TODO: if error creating do not enter loop # TODO: colors if sys.stdout.isatty() exit_code_from = args.__dict__.get('exit_code_from', None) if exit_code_from: args.abort_on_container_exit=True threads = [] for cnt in compose.containers: if cnt["_service"] in excluded: print("** skipping: ", cnt['name']) continue # TODO: remove sleep from podman.run obj = compose if exit_code_from == cnt['_service'] else None thread = Thread(target=compose.podman.run, args=[[], 'start', ['-a', cnt['name']]], kwargs={"obj":obj}, daemon=True, name=cnt['name']) thread.start() threads.append(thread) time.sleep(1) while threads: for thread in threads: thread.join(timeout=1.0) if not thread.is_alive(): threads.remove(thread) if args.abort_on_container_exit: time.sleep(1) exit_code = compose.exit_code if compose.exit_code is not None else -1 exit(exit_code) @cmd_run(podman_compose, 'down', 'tear down entire stack') def compose_down(compose, args): excluded = get_excluded(compose, args) podman_args=[] timeout=getattr(args, 'timeout', None) if timeout is None: timeout = 1 podman_args.extend(['-t', "{}".format(timeout)]) containers = list(reversed(compose.containers)) for cnt in containers: if cnt["_service"] in excluded: continue compose.podman.run([], "stop", [*podman_args, cnt["name"]], sleep=0) for cnt in containers: if cnt["_service"] in excluded: continue compose.podman.run([], "rm", [cnt["name"]], sleep=0) if excluded: return for pod in compose.pods: compose.podman.run([], "pod", ["rm", pod["name"]], sleep=0) if args.volumes: volume_names = [vol["Name"] for vol in compose.podman.volume_inspect_proj()] for volume_name in volume_names: compose.podman.run([], "volume", ["rm", volume_name]) @cmd_run(podman_compose, 'ps', 'show status of containers') def compose_ps(compose, args): proj_name = compose.project_name if args.quiet == True: compose.podman.run([], "ps", ["-a", "--format", "{{.ID}}", "--filter", f"label=io.podman.compose.project={proj_name}"]) else: compose.podman.run([], "ps", ["-a", "--filter", f"label=io.podman.compose.project={proj_name}"]) @cmd_run(podman_compose, 'run', 'create a container similar to a service to run a one-off command') def compose_run(compose, args): create_pods(compose, args) container_names=compose.container_names_by_service[args.service] container_name=container_names[0] cnt = dict(compose.container_by_name[container_name]) deps = cnt["_deps"] if not args.no_deps: up_args = argparse.Namespace(**dict(args.__dict__, detach=True, services=deps, # defaults no_build=False, build=True, force_recreate=False, no_start=False, no_cache=False, build_arg=[], ) ) compose.commands['up'](compose, up_args) # adjust one-off container options name0 = "{}_{}_tmp{}".format(compose.project_name, args.service, random.randrange(0, 65536)) cnt["name"] = args.name or name0 if args.entrypoint: cnt["entrypoint"] = args.entrypoint if args.user: cnt["user"] = args.user if args.workdir: cnt["working_dir"] = args.workdir env = dict(cnt.get('environment', {})) if args.env: additional_env_vars = dict(map(lambda each: each.split('='), args.env)) env.update(additional_env_vars) cnt['environment'] = env if not args.service_ports: for k in ("expose", "publishall", "ports"): try: del cnt[k] except KeyError: pass if args.volume: # TODO: handle volumes pass cnt['tty']=False if args.T else True if args.cnt_command is not None and len(args.cnt_command) > 0: cnt['command']=args.cnt_command # can't restart and --rm if args.rm and 'restart' in cnt: del cnt['restart'] # run podman podman_args = container_to_args(compose, cnt, args.detach) if not args.detach: podman_args.insert(1, '-i') if args.rm: podman_args.insert(1, '--rm') compose.podman.run([], 'run', podman_args, sleep=0) @cmd_run(podman_compose, 'exec', 'execute a command in a running container') def compose_exec(compose, args): container_names=compose.container_names_by_service[args.service] container_name=container_names[args.index - 1] cnt = compose.container_by_name[container_name] podman_args = ['--interactive'] if args.privileged: podman_args += ['--privileged'] if args.user: podman_args += ['--user', args.user] if args.workdir: podman_args += ['--workdir', args.workdir] if not args.T: podman_args += ['--tty'] env = dict(cnt.get('environment', {})) if args.env: additional_env_vars = dict(map(lambda each: each.split('='), args.env)) env.update(additional_env_vars) for name, value in env.items(): podman_args += ['--env', "%s=%s" % (name, value)] podman_args += [container_name] if args.cnt_command is not None and len(args.cnt_command) > 0: podman_args += args.cnt_command compose.podman.run([], 'exec', podman_args, sleep=0) def transfer_service_status(compose, args, action): # TODO: handle dependencies, handle creations container_names_by_service = compose.container_names_by_service targets = [] for service in args.services: if service not in container_names_by_service: raise ValueError("unknown service: " + service) targets.extend(container_names_by_service[service]) podman_args=[] timeout=getattr(args, 'timeout', None) if timeout is not None: podman_args.extend(['-t', "{}".format(timeout)]) for target in targets: compose.podman.run([], action, podman_args+[target], sleep=0) @cmd_run(podman_compose, 'start', 'start specific services') def compose_start(compose, args): transfer_service_status(compose, args, 'start') @cmd_run(podman_compose, 'stop', 'stop specific services') def compose_stop(compose, args): transfer_service_status(compose, args, 'stop') @cmd_run(podman_compose, 'restart', 'restart specific services') def compose_restart(compose, args): transfer_service_status(compose, args, 'restart') @cmd_run(podman_compose, 'logs', 'show logs from services') def compose_logs(compose, args): container_names_by_service = compose.container_names_by_service target = None if args.service not in container_names_by_service: raise ValueError("unknown service: " + args.service) target = container_names_by_service[args.service] podman_args = [] if args.follow: podman_args.append('-f') # the default value is to print all logs which is in podman = 0 and not # needed to be passed if args.tail and args.tail != 'all': podman_args.extend(['--tail', args.tail]) if args.timestamps: podman_args.append('-t') compose.podman.run([], 'logs', podman_args+target) ################### # command arguments parsing ################### @cmd_parse(podman_compose, 'up') def compose_up_parse(parser): parser.add_argument("-d", "--detach", action='store_true', help="Detached mode: Run container in the background, print new container name. Incompatible with --abort-on-container-exit.") parser.add_argument("--no-color", action='store_true', help="Produce monochrome output.") parser.add_argument("--quiet-pull", action='store_true', help="Pull without printing progress information.") parser.add_argument("--no-deps", action='store_true', help="Don't start linked services.") parser.add_argument("--force-recreate", action='store_true', help="Recreate containers even if their configuration and image haven't changed.") parser.add_argument("--always-recreate-deps", action='store_true', help="Recreate dependent containers. Incompatible with --no-recreate.") parser.add_argument("--no-recreate", action='store_true', help="If containers already exist, don't recreate them. Incompatible with --force-recreate and -V.") parser.add_argument("--no-build", action='store_true', help="Don't build an image, even if it's missing.") parser.add_argument("--no-start", action='store_true', help="Don't start the services after creating them.") parser.add_argument("--build", action='store_true', help="Build images before starting containers.") parser.add_argument("--abort-on-container-exit", action='store_true', help="Stops all containers if any container was stopped. Incompatible with -d.") parser.add_argument("-t", "--timeout", type=float, default=10, help="Use this timeout in seconds for container shutdown when attached or when containers are already running. (default: 10)") parser.add_argument("-V", "--renew-anon-volumes", action='store_true', help="Recreate anonymous volumes instead of retrieving data from the previous containers.") parser.add_argument("--remove-orphans", action='store_true', help="Remove containers for services not defined in the Compose file.") parser.add_argument('--scale', metavar="SERVICE=NUM", action='append', help="Scale SERVICE to NUM instances. Overrides the `scale` setting in the Compose file if present.") parser.add_argument("--exit-code-from", metavar='SERVICE', type=str, default=None, help="Return the exit code of the selected service container. Implies --abort-on-container-exit.") @cmd_parse(podman_compose, 'down') def compose_down_parse(parser): parser.add_argument("-v", "--volumes", action='store_true', default=False, help="Remove named volumes declared in the `volumes` section of the Compose file and " "anonymous volumes attached to containers.") @cmd_parse(podman_compose, 'run') def compose_run_parse(parser): parser.add_argument("-d", "--detach", action='store_true', help="Detached mode: Run container in the background, print new container name.") parser.add_argument("--name", type=str, default=None, help="Assign a name to the container") parser.add_argument("--entrypoint", type=str, default=None, help="Override the entrypoint of the image.") parser.add_argument('-e', '--env', metavar="KEY=VAL", action='append', help="Set an environment variable (can be used multiple times)") parser.add_argument('-l', '--label', metavar="KEY=VAL", action='append', help="Add or override a label (can be used multiple times)") parser.add_argument("-u", "--user", type=str, default=None, help="Run as specified username or uid") parser.add_argument("--no-deps", action='store_true', help="Don't start linked services") parser.add_argument("--rm", action='store_true', help="Remove container after run. Ignored in detached mode.") parser.add_argument('-p', '--publish', action='append', help="Publish a container's port(s) to the host (can be used multiple times)") parser.add_argument("--service-ports", action='store_true', help="Run command with the service's ports enabled and mapped to the host.") parser.add_argument('-v', '--volume', action='append', help="Bind mount a volume (can be used multiple times)") parser.add_argument("-T", action='store_true', help="Disable pseudo-tty allocation. By default `podman-compose run` allocates a TTY.") parser.add_argument("-w", "--workdir", type=str, default=None, help="Working directory inside the container") parser.add_argument('service', metavar='service', nargs=None, help='service name') parser.add_argument('cnt_command', metavar='command', nargs=argparse.REMAINDER, help='command and its arguments') @cmd_parse(podman_compose, 'exec') def compose_run_parse(parser): parser.add_argument("-d", "--detach", action='store_true', help="Detached mode: Run container in the background, print new container name.") parser.add_argument("--privileged", action='store_true', default=False, help="Give the process extended Linux capabilities inside the container") parser.add_argument("-u", "--user", type=str, default=None, help="Run as specified username or uid") parser.add_argument("-T", action='store_true', help="Disable pseudo-tty allocation. By default `podman-compose run` allocates a TTY.") parser.add_argument("--index", type=int, default=1, help="Index of the container if there are multiple instances of a service") parser.add_argument('-e', '--env', metavar="KEY=VAL", action='append', help="Set an environment variable (can be used multiple times)") parser.add_argument("-w", "--workdir", type=str, default=None, help="Working directory inside the container") parser.add_argument('service', metavar='service', nargs=None, help='service name') parser.add_argument('cnt_command', metavar='command', nargs=argparse.REMAINDER, help='command and its arguments') @cmd_parse(podman_compose, ['down', 'stop', 'restart']) def compose_parse_timeout(parser): parser.add_argument("-t", "--timeout", help="Specify a shutdown timeout in seconds. ", type=int, default=10) @cmd_parse(podman_compose, ['start', 'stop', 'restart']) def compose_parse_services(parser): parser.add_argument('services', metavar='services', nargs='+', help='affected services') @cmd_parse(podman_compose, ['logs']) def compose_logs_parse(parser): parser.add_argument("-f", "--follow", action='store_true', help="Follow log output.") parser.add_argument("-t", "--timestamps", action='store_true', help="Show timestamps.") parser.add_argument("--tail", help="Number of lines to show from the end of the logs for each " "container.", type=str, default="all") parser.add_argument('service', metavar='service', nargs=None, help='service name') @cmd_parse(podman_compose, 'pull') def compose_pull_parse(parser): parser.add_argument("--force-local", action='store_true', default=False, help="Also pull unprefixed images for services which have a build section") @cmd_parse(podman_compose, 'push') def compose_push_parse(parser): parser.add_argument("--ignore-push-failures", action='store_true', help="Push what it can and ignores images with push failures. (not implemented)") parser.add_argument('services', metavar='services', nargs='*', help='services to push') @cmd_parse(podman_compose, 'ps') def compose_ps_parse(parser): parser.add_argument("-q", "--quiet", help="Only display container IDs", action='store_true') @cmd_parse(podman_compose, ['build', 'up']) def compose_build_parse(parser): parser.add_argument("--pull", help="attempt to pull a newer version of the image", action='store_true') parser.add_argument("--pull-always", help="attempt to pull a newer version of the image, Raise an error even if the image is present locally.", action='store_true') parser.add_argument("--build-arg", metavar="key=val", action="append", default=[], help="Set build-time variables for services.") parser.add_argument("--no-cache", help="Do not use cache when building the image.", action='store_true') @cmd_parse(podman_compose, ['build', 'up', 'down']) def compose_build_parse(parser): parser.add_argument('services', metavar='services', nargs='*',default=None, help='affected services') def main(): podman_compose.run() if __name__ == "__main__": main()