forked from extern/podman-compose
1157 lines
43 KiB
Python
Executable File
1157 lines
43 KiB
Python
Executable File
#! /usr/bin/python3
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# -*- coding: utf-8 -*-
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# https://docs.docker.com/compose/compose-file/#service-configuration-reference
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# https://docs.docker.com/samples/
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# https://docs.docker.com/compose/gettingstarted/
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# https://docs.docker.com/compose/django/
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# https://docs.docker.com/compose/wordpress/
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from __future__ import print_function
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import sys
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import os
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import argparse
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import subprocess
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import time
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import re
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import hashlib
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import random
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from threading import Thread
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try:
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from shlex import quote as cmd_quote
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except ImportError:
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from pipes import quote as cmd_quote
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# import fnmatch
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# fnmatch.fnmatchcase(env, "*_HOST")
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import json
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import yaml
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__version__ = '0.1.5'
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PY3 = sys.version_info[0] == 3
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if PY3:
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basestring = str
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# helper functions
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is_str = lambda s: isinstance(s, basestring)
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is_dict = lambda d: isinstance(d, dict)
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is_list = lambda l: not is_str(l) and not is_dict(l) and hasattr(l, "__iter__")
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# identity filter
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filteri = lambda a: filter(lambda i:i, a)
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def try_int(i, fallback=None):
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try:
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return int(i)
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except ValueError:
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pass
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except TypeError:
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pass
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return fallback
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dir_re = re.compile("^[~/\.]")
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propagation_re=re.compile("^(?:z|Z|r?shared|r?slave|r?private)$")
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# NOTE: if a named volume is used but not defined it gives
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# ERROR: Named volume "so and so" is used in service "xyz" but no declaration was found in the volumes section.
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# unless it's anon-volume
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def parse_short_mount(mount_str, basedir):
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mount_a = mount_str.split(':')
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mount_opt_dict = {}
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mount_opt = None
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if len(mount_a)==1:
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# Just specify a path and let the Engine create a volume
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# - /var/lib/mysql
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mount_src, mount_dst=None, mount_str
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elif len(mount_a)==2:
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mount_src, mount_dst = mount_a
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# dest must start with /, otherwise it's option
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if not mount_dst.startswith('/'):
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mount_dst, mount_opt = mount_a
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mount_src = None
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elif len(mount_a)==3:
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mount_src, mount_dst, mount_opt = mount_a
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else:
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raise ValueError("could not parse mount "+mount_str)
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if mount_src and dir_re.match(mount_src):
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# Specify an absolute path mapping
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# - /opt/data:/var/lib/mysql
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# Path on the host, relative to the Compose file
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# - ./cache:/tmp/cache
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# User-relative path
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# - ~/configs:/etc/configs/:ro
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mount_type = "bind"
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# TODO: should we use os.path.realpath(basedir)?
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mount_src = os.path.join(basedir, os.path.expanduser(mount_src))
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else:
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# Named volume
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# - datavolume:/var/lib/mysql
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mount_type = "volume"
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mount_opts = filteri((mount_opt or '').split(','))
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for opt in mount_opts:
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if opt=='ro': mount_opt_dict["read_only"]=True
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elif opt=='rw': mount_opt_dict["read_only"]=False
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elif propagation_re.match(opt): mount_opt_dict["bind"]=dict(propagation=opt)
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else:
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# TODO: ignore
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raise ValueError("unknown mount option "+opt)
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return dict(type=mount_type, source=mount_src, target=mount_dst, **mount_opt_dict)
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def fix_mount_dict(mount_dict, proj_name, srv_name):
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"""
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in-place fix mount dictionary to:
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- add missing source
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- prefix source with proj_name
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"""
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if mount_dict["type"]=="volume":
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source = mount_dict.get("source")
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# keep old source
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mount_dict["_source"] = source
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if not source:
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# missing source
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mount_dict["source"] = "_".join([
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proj_name, srv_name,
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hashlib.md5(mount_dict["target"].encode("utf-8")).hexdigest(),
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])
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else:
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# prefix with proj_name
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mount_dict["source"] = proj_name+"_"+source
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return mount_dict
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# docker and docker-compose support subset of bash variable substitution
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# https://docs.docker.com/compose/compose-file/#variable-substitution
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# https://docs.docker.com/compose/env-file/
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# https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html
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# $VARIABLE
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# ${VARIABLE}
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# ${VARIABLE:-default} default if not set or empty
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# ${VARIABLE-default} default if not set
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# ${VARIABLE:?err} raise error if not set or empty
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# ${VARIABLE?err} raise error if not set
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# $$ means $
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var_re = re.compile(r'\$(\{(?:[^\s\$:\-\}]+)\}|(?:[^\s\$\{\}]+))')
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var_def_re = re.compile(r'\$\{([^\s\$:\-\}]+)(:)?-([^\}]+)\}')
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var_err_re = re.compile(r'\$\{([^\s\$:\-\}]+)(:)?\?([^\}]+)\}')
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def dicts_get(dicts, key, fallback='', fallback_empty=False):
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"""
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get the given key from any dict in dicts, trying them one by one
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if not found in any, then use fallback, if fallback is Exception raise is
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"""
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value = None
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for d in dicts:
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value = d.get(key)
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if value is not None: break
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if not value:
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if fallback_empty or value is None:
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value = fallback
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if isinstance(value, Exception):
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raise value
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return value
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def rec_subs(value, dicts):
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"""
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do bash-like substitution in value and if list of dictionary do that recursively
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"""
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if is_dict(value):
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value = dict([(k, rec_subs(v, dicts)) for k, v in value.items()])
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elif is_str(value):
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value = var_re.sub(lambda m: dicts_get(dicts, m.group(1).strip('{}')), value)
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sub_def = lambda m: dicts_get(dicts, m.group(1), m.group(3), m.group(2) == ':')
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value = var_def_re.sub(sub_def, value)
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sub_err = lambda m: dicts_get(dicts, m.group(1), RuntimeError(m.group(3)),
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m.group(2) == ':')
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value = var_err_re.sub(sub_err, value)
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value = value.replace('$$', '$')
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elif hasattr(value, "__iter__"):
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value = [rec_subs(i, dicts) for i in value]
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return value
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def norm_as_list(src):
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"""
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given a dictionary {key1:value1, key2: None} or list
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return a list of ["key1=value1", "key2"]
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"""
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if src is None:
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dst = []
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elif is_dict(src):
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dst = [("{}={}".format(k, v) if v else k) for k, v in src.items()]
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elif is_list(src):
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dst = list(src)
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else:
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dst = [src]
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return dst
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def norm_as_dict(src):
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"""
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given a list ["key1=value1", "key2"]
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return a dictionary {key1:value1, key2: None}
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"""
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if src is None:
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dst = {}
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elif is_dict(src):
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dst = dict(src)
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elif is_list(src):
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dst = [i.split("=", 1) for i in src if i]
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dst = dict([(a if len(a) == 2 else (a[0], None)) for a in dst])
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elif is_str(src):
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key, value = src.split("=", 1) if "=" in src else (src, None)
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dst = {key: value}
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else:
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raise ValueError("dictionary or iterable is expected")
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return dst
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# transformation helpers
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def adj_hosts(services, cnt, dst="127.0.0.1"):
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"""
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adjust container cnt in-place to add hosts pointing to dst for services
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"""
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common_extra_hosts = []
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for srv, cnts in services.items():
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common_extra_hosts.append("{}:{}".format(srv, dst))
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for cnt0 in cnts:
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common_extra_hosts.append("{}:{}".format(cnt0, dst))
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extra_hosts = list(cnt.get("extra_hosts", []))
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extra_hosts.extend(common_extra_hosts)
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# link aliases
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for link in cnt.get("links", []):
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a = link.strip().split(':', 1)
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if len(a) == 2:
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alias = a[1].strip()
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extra_hosts.append("{}:{}".format(alias, dst))
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cnt["extra_hosts"] = extra_hosts
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def move_list(dst, containers, key):
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"""
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move key (like port forwarding) from containers to dst (a pod or a infra container)
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"""
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a = set(dst.get(key) or [])
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for cnt in containers:
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a0 = cnt.get(key)
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if a0:
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a.update(a0)
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del cnt[key]
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if a:
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dst[key] = list(a)
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def move_port_fw(dst, containers):
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"""
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move port forwarding from containers to dst (a pod or a infra container)
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"""
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move_list(dst, containers, "ports")
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def move_extra_hosts(dst, containers):
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"""
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move port forwarding from containers to dst (a pod or a infra container)
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"""
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move_list(dst, containers, "extra_hosts")
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# transformations
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transformations = {}
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def trans(func):
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transformations[func.__name__.replace("tr_", "")] = func
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return func
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@trans
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def tr_identity(project_name, services, given_containers):
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containers = []
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for cnt in given_containers:
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containers.append(dict(cnt))
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return [], containers
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@trans
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def tr_publishall(project_name, services, given_containers):
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containers = []
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for cnt0 in given_containers:
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cnt = dict(cnt0, publishall=True)
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# adjust hosts to point to the gateway, TODO: adjust host env
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adj_hosts(services, cnt, '10.0.2.2')
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containers.append(cnt)
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return [], containers
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@trans
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def tr_hostnet(project_name, services, given_containers):
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containers = []
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for cnt0 in given_containers:
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cnt = dict(cnt0, network_mode="host")
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# adjust hosts to point to localhost, TODO: adjust host env
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adj_hosts(services, cnt, '127.0.0.1')
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containers.append(cnt)
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return [], containers
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@trans
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def tr_cntnet(project_name, services, given_containers):
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containers = []
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infra_name = project_name + "_infra"
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infra = dict(
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name=infra_name,
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image="k8s.gcr.io/pause:3.1",
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)
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for cnt0 in given_containers:
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cnt = dict(cnt0, network_mode="container:"+infra_name)
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deps = cnt.get("depends_on") or []
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deps.append(infra_name)
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cnt["depends_on"] = deps
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# adjust hosts to point to localhost, TODO: adjust host env
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adj_hosts(services, cnt, '127.0.0.1')
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if "hostname" in cnt:
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del cnt["hostname"]
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containers.append(cnt)
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move_port_fw(infra, containers)
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move_extra_hosts(infra, containers)
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containers.insert(0, infra)
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return [], containers
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@trans
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def tr_1pod(project_name, services, given_containers):
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"""
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project_name:
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services: {service_name: ["container_name1", "..."]}, currently only one is supported
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given_containers: [{}, ...]
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"""
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pod = dict(name=project_name)
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containers = []
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for cnt0 in given_containers:
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cnt = dict(cnt0, pod=project_name)
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# services can be accessed as localhost because they are on one pod
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# adjust hosts to point to localhost, TODO: adjust host env
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adj_hosts(services, cnt, '127.0.0.1')
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containers.append(cnt)
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return [pod], containers
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@trans
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def tr_1podfw(project_name, services, given_containers):
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pods, containers = tr_1pod(project_name, services, given_containers)
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pod = pods[0]
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move_port_fw(pod, containers)
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return pods, containers
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def mount_dict_vol_to_bind(compose, mount_dict):
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"""
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inspect volume to get directory
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create volume if needed
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and return mount_dict as bind of that directory
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"""
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proj_name = compose.project_name
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shared_vols = compose.shared_vols
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if mount_dict["type"]!="volume": return mount_dict
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vol_name = mount_dict["source"]
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print("podman volume inspect {vol_name} || podman volume create {vol_name}".format(vol_name=vol_name))
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# podman volume list --format '{{.Name}}\t{{.MountPoint}}' -f 'label=io.podman.compose.project=HERE'
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try: out = compose.podman.output(["volume", "inspect", vol_name]).decode('utf-8')
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except subprocess.CalledProcessError:
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compose.podman.output(["volume", "create", "-l", "io.podman.compose.project={}".format(proj_name), vol_name])
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out = compose.podman.output(["volume", "inspect", vol_name]).decode('utf-8')
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src = json.loads(out)[0]["mountPoint"]
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ret=dict(mount_dict, type="bind", source=src, _vol=vol_name)
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bind_prop=ret.get("bind", {}).get("propagation")
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if not bind_prop:
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if "bind" not in ret:
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ret["bind"]={}
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# if in top level volumes then it's shared bind-propagation=z
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if vol_name in shared_vols:
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ret["bind"]["propagation"]="z"
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else:
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ret["bind"]["propagation"]="Z"
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try: del ret["volume"]
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except KeyError: pass
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return ret
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def mount_desc_to_args(compose, mount_desc, srv_name, cnt_name):
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basedir = compose.dirname
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proj_name = compose.project_name
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shared_vols = compose.shared_vols
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if is_str(mount_desc): mount_desc=parse_short_mount(mount_desc, basedir)
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# not needed
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# podman support: podman run --rm -ti --mount type=volume,source=myvol,destination=/delme busybox
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mount_desc = mount_dict_vol_to_bind(compose, fix_mount_dict(mount_desc, proj_name, srv_name))
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mount_type = mount_desc.get("type")
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source = mount_desc.get("source")
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target = mount_desc["target"]
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opts=[]
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if mount_desc.get("bind"):
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bind_prop=mount_desc["bind"].get("propagation")
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if bind_prop: opts.append("bind-propagation={}".format(bind_prop))
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if mount_desc.get("read_only", False): opts.append("ro")
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if mount_type=='tmpfs':
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tmpfs_opts = mount_desc.get("tmpfs", {})
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tmpfs_size = tmpfs_opts.get("size")
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if tmpfs_size:
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opts.append("tmpfs-size={}".format(tmpfs_size))
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tmpfs_mode = tmpfs_opts.get("mode")
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if tmpfs_mode:
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opts.append("tmpfs-mode={}".format(tmpfs_mode))
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opts=",".join(opts)
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if mount_type=='bind':
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return "type=bind,source={source},destination={target},{opts}".format(
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source=source,
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target=target,
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opts=opts
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).rstrip(",")
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elif mount_type=='tmpfs':
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return "type=tmpfs,destination={target},{opts}".format(
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target=target,
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opts=opts
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).rstrip(",")
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else:
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raise ValueError("unknown mount type:"+mount_type)
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def container_to_args(compose, cnt, detached=True, podman_command='run'):
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# TODO: double check -e , --add-host, -v, --read-only
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dirname = compose.dirname
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shared_vols = compose.shared_vols
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pod = cnt.get('pod') or ''
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podman_args = [
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podman_command,
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'--name={}'.format(cnt.get('name')),
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]
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if detached:
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podman_args.append("-d")
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if pod:
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podman_args.append('--pod={}'.format(pod))
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sec = norm_as_list(cnt.get("security_opt"))
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for s in sec:
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podman_args.extend(['--security-opt', s])
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if cnt.get('read_only'):
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podman_args.append('--read-only')
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for i in cnt.get('labels', []):
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podman_args.extend(['-l', i])
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net = cnt.get("network_mode")
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if net:
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podman_args.extend(['--network', net])
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env = norm_as_list(cnt.get('environment', {}))
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for e in env:
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podman_args.extend(['-e', e])
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for i in cnt.get('env_file', []):
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i = os.path.realpath(os.path.join(dirname, i))
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podman_args.extend(['--env-file', i])
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tmpfs_ls = cnt.get('tmpfs', [])
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if is_str(tmpfs_ls): tmpfs_ls=[tmpfs_ls]
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for i in tmpfs_ls:
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podman_args.extend(['--tmpfs', i])
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for volume in cnt.get('volumes', []):
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# TODO: should we make it os.path.realpath(os.path.join(, i))?
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mount_args = mount_desc_to_args(compose, volume, cnt['_service'], cnt['name'])
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podman_args.extend(['--mount', mount_args])
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for i in cnt.get('extra_hosts', []):
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podman_args.extend(['--add-host', i])
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for i in cnt.get('expose', []):
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podman_args.extend(['--expose', i])
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if cnt.get('publishall'):
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podman_args.append('-P')
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for i in cnt.get('ports', []):
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podman_args.extend(['-p', i])
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user = cnt.get('user')
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if user is not None:
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podman_args.extend(['-u', user])
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if cnt.get('working_dir') is not None:
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podman_args.extend(['-w', cnt.get('working_dir')])
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if cnt.get('hostname'):
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podman_args.extend(['--hostname', cnt.get('hostname')])
|
|
if cnt.get('shm_size'):
|
|
podman_args.extend(['--shm_size', '{}'.format(cnt.get('shm_size'))])
|
|
if cnt.get('stdin_open'):
|
|
podman_args.append('-i')
|
|
if cnt.get('tty'):
|
|
podman_args.append('--tty')
|
|
# currently podman shipped by fedora does not package this
|
|
# if cnt.get('init'):
|
|
# args.append('--init')
|
|
entrypoint = cnt.get('entrypoint')
|
|
if entrypoint is not None:
|
|
if is_str(entrypoint):
|
|
podman_args.extend(['--entrypoint', entrypoint])
|
|
else:
|
|
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')
|
|
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.get('image')) # command, ..etc.
|
|
command = cnt.get('command')
|
|
if command is not None:
|
|
if is_str(command):
|
|
podman_args.extend(command.split())
|
|
else:
|
|
podman_args.extend(command)
|
|
return podman_args
|
|
|
|
|
|
def rec_deps(services, container_by_name, cnt, init_service):
|
|
deps = cnt["_deps"]
|
|
for dep in deps.copy():
|
|
dep_cnts = services.get(dep)
|
|
if not dep_cnts:
|
|
continue
|
|
dep_cnt = container_by_name.get(dep_cnts[0])
|
|
if dep_cnt:
|
|
# TODO: avoid creating loops, A->B->A
|
|
if init_service and init_service in dep_cnt["_deps"]:
|
|
continue
|
|
new_deps = rec_deps(services, container_by_name,
|
|
dep_cnt, init_service)
|
|
deps.update(new_deps)
|
|
return deps
|
|
|
|
|
|
def flat_deps(services, container_by_name):
|
|
for name, cnt in container_by_name.items():
|
|
deps = set([(c.split(":")[0] if ":" in c else c)
|
|
for c in cnt.get("links", [])])
|
|
deps.update(cnt.get("depends_on", []))
|
|
cnt["_deps"] = deps
|
|
for name, cnt in container_by_name.items():
|
|
rec_deps(services, container_by_name, cnt, cnt.get('_service'))
|
|
|
|
###################
|
|
# 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 = [self.podman_path]+podman_args
|
|
return subprocess.check_output(cmd)
|
|
|
|
def run(self, podman_args, wait=True, sleep=1):
|
|
podman_args_str = [str(arg) for arg in podman_args]
|
|
print("podman " + " ".join(podman_args_str))
|
|
if self.dry_run:
|
|
return None
|
|
cmd = [self.podman_path]+podman_args_str
|
|
# 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)
|
|
if wait:
|
|
print(p.wait())
|
|
if sleep:
|
|
time.sleep(sleep)
|
|
return p
|
|
|
|
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():
|
|
for key in ("env_file", "security_opt"):
|
|
if key not in service: continue
|
|
if is_str(service[key]): service[key]=[service[key]]
|
|
for key in ("environment", "labels"):
|
|
if key not in service: continue
|
|
service[key] = norm_as_dict(service[key])
|
|
return compose
|
|
|
|
def rec_merge(target, source):
|
|
"""
|
|
update content of compose with keys from content 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_str(value2):
|
|
target[key]=value2
|
|
elif is_list(value2):
|
|
value.extend(value2)
|
|
elif is_dict(value2):
|
|
rec_merge(value, value2)
|
|
else:
|
|
raise ValueError("unexpected type of {}".format(key))
|
|
return target
|
|
|
|
class PodmanCompose:
|
|
def __init__(self):
|
|
self.commands = {}
|
|
self.global_args = None
|
|
self.project_name = None
|
|
self.dirname = None
|
|
self.pods = None
|
|
self.containers = None
|
|
self.shared_vols = None
|
|
self.container_names_by_service = None
|
|
self.container_by_name = None
|
|
|
|
def run(self):
|
|
args = self._parse_args()
|
|
self._parse_compose_file()
|
|
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 dry_run == False:
|
|
raise IOError(
|
|
"Binary {} has not been found.".format(podman_path))
|
|
|
|
self.podman = Podman(self, podman_path, args.dry_run)
|
|
cmd_name = args.command
|
|
cmd = self.commands[cmd_name]
|
|
cmd(self, args)
|
|
|
|
def _parse_compose_file(self):
|
|
args = self.global_args
|
|
cmd = args.command
|
|
if not args.file:
|
|
args.file = list(filter(os.path.exists, [
|
|
"docker-compose.yml",
|
|
"docker-compose.yaml",
|
|
"docker-compose.override.yml",
|
|
"docker-compose.override.yaml"
|
|
]))
|
|
files = args.file
|
|
if not files:
|
|
print("no docker-compose.yml found, pass files with -f")
|
|
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
|
|
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.dirname(filename)
|
|
dir_basename = os.path.basename(dirname)
|
|
self.dirname = dirname
|
|
# TODO: remove next line
|
|
os.chdir(dirname)
|
|
|
|
if not project_name:
|
|
project_name = dir_basename
|
|
self.project_name = project_name
|
|
|
|
|
|
dotenv_path = os.path.join(dirname, ".env")
|
|
if os.path.exists(dotenv_path):
|
|
with open(dotenv_path, 'r') as f:
|
|
dotenv_ls = [l.strip() for l in f if l.strip() and not l.startswith('#')]
|
|
dotenv_dict = dict([l.split("=", 1) for l in dotenv_ls if "=" in l])
|
|
else:
|
|
dotenv_dict = {}
|
|
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))
|
|
content = normalize(content)
|
|
#print(filename, json.dumps(content, indent = 2))
|
|
content = rec_subs(content, [os.environ, dotenv_dict])
|
|
rec_merge(compose, content)
|
|
# debug mode
|
|
if len(files)>1:
|
|
print(" ** merged:\n", json.dumps(compose, indent = 2))
|
|
ver = compose.get('version')
|
|
services = compose.get('services')
|
|
# volumes: [...]
|
|
shared_vols = compose.get('volumes', {})
|
|
# shared_vols = list(shared_vols.keys())
|
|
shared_vols = set(shared_vols.keys())
|
|
self.shared_vols = shared_vols
|
|
podman_compose_labels = [
|
|
"io.podman.compose.config-hash=123",
|
|
"io.podman.compose.project=" + project_name,
|
|
"io.podman.compose.version=0.0.1",
|
|
]
|
|
# other top-levels:
|
|
# networks: {driver: ...}
|
|
# configs: {...}
|
|
# secrets: {...}
|
|
given_containers = []
|
|
container_names_by_service = {}
|
|
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'))
|
|
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])
|
|
flat_deps(container_names_by_service, container_by_name)
|
|
#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') 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()
|
|
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 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("-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("--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="how to translate docker compose to podman [1pod|hostnet|accurate]",
|
|
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, 'pull', 'pull stack images')
|
|
def compose_pull(compose, args):
|
|
for cnt in compose.containers:
|
|
if cnt.get('build'): continue
|
|
compose.podman.run(["pull", cnt["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 = os.path.join(ctx, build_desc.get("dockerfile", "Dockerfile"))
|
|
if not os.path.exists(dockerfile):
|
|
dockerfile = os.path.join(ctx, build_desc.get("dockerfile", "dockerfile"))
|
|
if not os.path.exists(dockerfile):
|
|
raise OSError("Dockerfile not found in "+ctx)
|
|
build_args = [
|
|
"build", "-t", cnt["image"],
|
|
"-f", dockerfile
|
|
]
|
|
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:
|
|
build_args.extend(("--build-arg", build_arg,))
|
|
build_args.append(ctx)
|
|
compose.podman.run(build_args, sleep=0)
|
|
|
|
@cmd_run(podman_compose, 'build', 'build stack images')
|
|
def compose_build(compose, args):
|
|
for cnt in compose.containers:
|
|
build_one(compose, args, cnt)
|
|
|
|
def create_pods(compose, args):
|
|
for pod in compose.pods:
|
|
podman_args = [
|
|
"pod", "create",
|
|
"--name={}".format(pod["name"]),
|
|
"--share", "net",
|
|
]
|
|
ports = pod.get("ports") or []
|
|
for i in ports:
|
|
podman_args.extend(['-p', i])
|
|
compose.podman.run(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")
|
|
|
|
@cmd_run(podman_compose, 'up', 'Create and start the entire stack or some of its services')
|
|
def compose_up(compose, args):
|
|
if args.services:
|
|
return up_specific(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)
|
|
|
|
shared_vols = compose.shared_vols
|
|
|
|
# TODO: implement check hash label for change
|
|
if args.force_recreate:
|
|
compose.commands['down'](compose, 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:
|
|
podman_args = container_to_args(compose, cnt,
|
|
detached=args.detach, podman_command=podman_command)
|
|
compose.podman.run(podman_args)
|
|
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()
|
|
|
|
threads = []
|
|
for cnt in compose.containers:
|
|
# TODO: remove sleep from podman.run
|
|
thread = Thread(target=compose.podman.run, args=[['start', '-a', cnt['name']]], daemon=True)
|
|
thread.start()
|
|
threads.append(thread)
|
|
time.sleep(1)
|
|
while True:
|
|
for thread in threads:
|
|
thread.join(timeout=1.0)
|
|
if thread.is_alive(): continue
|
|
if args.abort_on_container_exit:
|
|
exit(-1)
|
|
|
|
@cmd_run(podman_compose, 'down', 'tear down entire stack')
|
|
def compose_down(compose, args):
|
|
for cnt in compose.containers:
|
|
compose.podman.run(["stop", "-t=1", cnt["name"]], sleep=0)
|
|
for cnt in compose.containers:
|
|
compose.podman.run(["rm", cnt["name"]], sleep=0)
|
|
for pod in compose.pods:
|
|
compose.podman.run(["pod", "rm", pod["name"]], sleep=0)
|
|
|
|
@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)
|
|
print(args)
|
|
container_names=compose.container_names_by_service[args.service]
|
|
container_name=container_names[0]
|
|
cnt = compose.container_by_name[container_name]
|
|
deps = cnt["_deps"]
|
|
if not args.no_deps:
|
|
# TODO: start services in deps
|
|
pass
|
|
# 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
|
|
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
|
|
cnt['command']=args.command
|
|
# 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(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=[action]
|
|
timeout=getattr(args, 'timeout', None)
|
|
if timeout is not None:
|
|
podman_args.extend(['-t', "{}".format(timeout)])
|
|
for target in targets:
|
|
compose.podman.run(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, 'start')
|
|
|
|
@cmd_run(podman_compose, 'restart', 'restart specific services')
|
|
def compose_restart(compose, args):
|
|
transfer_service_status(compose, args, 'restart')
|
|
|
|
###################
|
|
# 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.")
|
|
parser.add_argument('services', metavar='SERVICES', nargs='*',
|
|
help='service names to start')
|
|
|
|
|
|
@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', 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('command', metavar='command', nargs=argparse.REMAINDER,
|
|
help='comman and its args')
|
|
|
|
@cmd_parse(podman_compose, ['stop', 'restart'])
|
|
def compose_parse_timeout(parser):
|
|
parser.add_argument("-t", "--timeout",
|
|
help="Specify a shutdown timeout in seconds. ",
|
|
type=float, 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, '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, 'build')
|
|
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')
|
|
|
|
|
|
def main():
|
|
podman_compose.run()
|
|
|
|
if __name__ == "__main__":
|
|
main()
|