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ansible/hacking/test-module.py

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#!/usr/bin/env python
# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
#
# this script is for testing modules without running through the
# entire guts of ansible, and is very helpful for when developing
# modules
#
# example:
# ./hacking/test-module.py -m lib/ansible/modules/command.py -a "/bin/sleep 3"
# ./hacking/test-module.py -m lib/ansible/modules/command.py -a "/bin/sleep 3" --debugger /usr/bin/pdb
# ./hacking/test-module.py -m lib/ansible/modules/lineinfile.py -a "dest=/etc/exports line='/srv/home hostname1(rw,sync)'" --check
# ./hacking/test-module.py -m lib/ansible/modules/command.py -a "echo hello" -n -o "test_hello"
from __future__ import annotations
import glob
import optparse
import os
import subprocess
import sys
import traceback
import shutil
from ansible.release import __version__
import ansible.utils.vars as utils_vars
from ansible.parsing.dataloader import DataLoader
from ansible.parsing.utils.jsonify import jsonify
from ansible.parsing.splitter import parse_kv
from ansible.plugins.loader import init_plugin_loader
from ansible.executor import module_common
import ansible.constants as C
from ansible.module_utils.common.text.converters import to_native, to_text
from ansible.template import Templar
import json
def parse():
"""parse command line
:return : (options, args)"""
parser = optparse.OptionParser()
parser.usage = "%prog -[options] (-h for help)"
parser.add_option('-m', '--module-path', dest='module_path',
help="REQUIRED: full path of module source to execute")
parser.add_option('-a', '--args', dest='module_args', default="",
help="module argument string")
parser.add_option('-D', '--debugger', dest='debugger',
help="path to python debugger (e.g. /usr/bin/pdb)")
parser.add_option('-I', '--interpreter', dest='interpreter',
help="path to interpreter to use for this module"
" (e.g. ansible_python_interpreter=/usr/bin/python)",
metavar='INTERPRETER_TYPE=INTERPRETER_PATH',
default="ansible_python_interpreter=%s" %
(sys.executable if sys.executable else '/usr/bin/python'))
parser.add_option('-c', '--check', dest='check', action='store_true',
help="run the module in check mode")
parser.add_option('-n', '--noexecute', dest='execute', action='store_false',
default=True, help="do not run the resulting module")
parser.add_option('-o', '--output', dest='filename',
help="Filename for resulting module",
default="~/.ansible_module_generated")
options, args = parser.parse_args()
if not options.module_path:
parser.print_help()
sys.exit(1)
else:
return options, args
def write_argsfile(argstring, json=False):
""" Write args to a file for old-style module's use. """
argspath = os.path.expanduser("~/.ansible_test_module_arguments")
argsfile = open(argspath, 'w')
if json:
args = parse_kv(argstring)
argstring = jsonify(args)
argsfile.write(argstring)
argsfile.close()
return argspath
def get_interpreters(interpreter):
result = dict()
if interpreter:
if '=' not in interpreter:
print("interpreter must by in the form of ansible_python_interpreter=/usr/bin/python")
sys.exit(1)
interpreter_type, interpreter_path = interpreter.split('=')
if not interpreter_type.startswith('ansible_'):
interpreter_type = 'ansible_%s' % interpreter_type
if not interpreter_type.endswith('_interpreter'):
interpreter_type = '%s_interpreter' % interpreter_type
result[interpreter_type] = interpreter_path
return result
def boilerplate_module(modfile, args, interpreters, check, destfile):
""" simulate what ansible does with new style modules """
# module_fh = open(modfile)
# module_data = module_fh.read()
# module_fh.close()
# replacer = module_common.ModuleReplacer()
loader = DataLoader()
# included_boilerplate = module_data.find(module_common.REPLACER) != -1 or module_data.find("import ansible.module_utils") != -1
complex_args = {}
# default selinux fs list is pass in as _ansible_selinux_special_fs arg
complex_args['_ansible_selinux_special_fs'] = C.DEFAULT_SELINUX_SPECIAL_FS
complex_args['_ansible_tmpdir'] = C.DEFAULT_LOCAL_TMP
complex_args['_ansible_keep_remote_files'] = C.DEFAULT_KEEP_REMOTE_FILES
complex_args['_ansible_version'] = __version__
if args.startswith("@"):
# Argument is a YAML file (JSON is a subset of YAML)
complex_args = utils_vars.combine_vars(complex_args, loader.load_from_file(args[1:]))
args = ''
elif args.startswith("{"):
# Argument is a YAML document (not a file)
complex_args = utils_vars.combine_vars(complex_args, loader.load(args))
args = ''
if args:
parsed_args = parse_kv(args)
complex_args = utils_vars.combine_vars(complex_args, parsed_args)
task_vars = interpreters
if check:
complex_args['_ansible_check_mode'] = True
modname = os.path.basename(modfile)
modname = os.path.splitext(modname)[0]
(module_data, module_style, shebang) = module_common.modify_module(
modname,
modfile,
complex_args,
Templar(loader=loader),
task_vars=task_vars
)
if module_style == 'new' and '_ANSIBALLZ_WRAPPER = True' in to_native(module_data):
module_style = 'ansiballz'
modfile2_path = os.path.expanduser(destfile)
print("* including generated source, if any, saving to: %s" % modfile2_path)
if module_style not in ('ansiballz', 'old'):
print("* this may offset any line numbers in tracebacks/debuggers!")
modfile2 = open(modfile2_path, 'wb')
modfile2.write(module_data)
modfile2.close()
modfile = modfile2_path
return (modfile2_path, modname, module_style)
def ansiballz_setup(modfile, modname, interpreters):
os.system("chmod +x %s" % modfile)
if 'ansible_python_interpreter' in interpreters:
command = [interpreters['ansible_python_interpreter']]
else:
command = []
command.extend([modfile, 'explode'])
cmd = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = cmd.communicate()
out, err = to_text(out, errors='surrogate_or_strict'), to_text(err)
lines = out.splitlines()
if len(lines) != 2 or 'Module expanded into' not in lines[0]:
print("*" * 35)
print("INVALID OUTPUT FROM ANSIBALLZ MODULE WRAPPER")
print(out)
sys.exit(err)
debug_dir = lines[1].strip()
# All the directories in an AnsiBallZ that modules can live
core_dirs = glob.glob(os.path.join(debug_dir, 'ansible/modules'))
collection_dirs = glob.glob(os.path.join(debug_dir, 'ansible_collections/*/*/plugins/modules'))
# There's only one module in an AnsiBallZ payload so look for the first module and then exit
for module_dir in core_dirs + collection_dirs:
for dirname, directories, filenames in os.walk(module_dir):
for filename in filenames:
if filename == modname + '.py':
modfile = os.path.join(dirname, filename)
break
argsfile = os.path.join(debug_dir, 'args')
print("* ansiballz module detected; extracted module source to: %s" % debug_dir)
return modfile, argsfile
def runtest(modfile, argspath, modname, module_style, interpreters):
"""Test run a module, piping it's output for reporting."""
invoke = ""
if module_style == 'ansiballz':
modfile, argspath = ansiballz_setup(modfile, modname, interpreters)
if 'ansible_python_interpreter' in interpreters:
invoke = "%s " % interpreters['ansible_python_interpreter']
os.system("chmod +x %s" % modfile)
invoke = "%s%s" % (invoke, modfile)
if argspath is not None:
invoke = "%s %s" % (invoke, argspath)
cmd = subprocess.Popen(invoke, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(out, err) = cmd.communicate()
out, err = to_text(out), to_text(err)
try:
print("*" * 35)
print("RAW OUTPUT")
print(out)
print(err)
results = json.loads(out)
except Exception:
print("*" * 35)
print("INVALID OUTPUT FORMAT")
print(out)
traceback.print_exc()
sys.exit(1)
print("*" * 35)
print("PARSED OUTPUT")
print(jsonify(results, format=True))
def rundebug(debugger, modfile, argspath, modname, module_style, interpreters):
"""Run interactively with console debugger."""
if module_style == 'ansiballz':
modfile, argspath = ansiballz_setup(modfile, modname, interpreters)
if argspath is not None:
subprocess.call("%s %s %s" % (debugger, modfile, argspath), shell=True)
else:
subprocess.call("%s %s" % (debugger, modfile), shell=True)
def main():
options, args = parse()
init_plugin_loader()
interpreters = get_interpreters(options.interpreter)
(modfile, modname, module_style) = boilerplate_module(options.module_path, options.module_args, interpreters, options.check, options.filename)
argspath = None
if module_style not in ('new', 'ansiballz'):
if module_style in ('non_native_want_json', 'binary'):
argspath = write_argsfile(options.module_args, json=True)
elif module_style == 'old':
argspath = write_argsfile(options.module_args, json=False)
else:
raise Exception("internal error, unexpected module style: %s" % module_style)
if options.execute:
if options.debugger:
rundebug(options.debugger, modfile, argspath, modname, module_style, interpreters)
else:
runtest(modfile, argspath, modname, module_style, interpreters)
if __name__ == "__main__":
try:
main()
finally:
shutil.rmtree(C.DEFAULT_LOCAL_TMP, True)
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