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Migrate to Python 3 only

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This commit is contained in:
aubustou 2020-10-19 23:57:22 +02:00
parent a33aebce1c
commit fc584c2a48
3 changed files with 140 additions and 167 deletions
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29
.travis.yml
View file

@ -1,8 +1,9 @@
language: python language: python
python: python:
- '2.7'
- '3.5'
- '3.6' - '3.6'
- '3.7'
- '3.8'
- '3.9'
before_install: sudo apt-get install unzip before_install: sudo apt-get install unzip
before_script: before_script:
- export TFVER=0.10.0 - export TFVER=0.10.0
@ -26,27 +27,3 @@ branches:
- master - master
- develop - develop
- release/** - release/**
deploy:
- provider: pypi
distributions: sdist
server: https://testpypi.python.org/pypi
user: beelit94
password:
secure: sWxc+p/gdq3k2WbUGNG2F4TukFNkTkvq6OPaiOvyfgWThYNk6/juRkMd8flmTbh0VGhcjFbpDLeSApb2kFhfiokYJSH1hOOcmXf8xzYH8/+R4DDEiGa5Y/pR9TBvYu4S8eJEfFUFfb1BBpapykj7o43hcaqMExBJIdVJU7aeoEAC1jQeTJh8wWwdJKHy2dNSM+6RVhk3e5+b0LfK7Bk5sU5P+YdEMj79MJU450J4OmZXWzJgvBN5/2QfVa5LrUD00nYuGuiBniz2lVevIHWjUYawUzpPsTa7F0s2WemG9YcV7U8u06xNjY9Ce3CTbxNhc7OIKq+TCkOgR3qZFXVJ8A87G+AT2iQ01VslQ4DJCxnJNTnpqojWnwf6MFL9O8ONioWYO32bhQFKOQ806ASHP4lNMRDKqx8hXtP5In7/r0SARKscv6Bas83rp+FESkKD5vWgkZJG+yx96LlwRLUhSVnVyb/nOJ++zt5RR3BvY2O4p9YAZY3Qt8TQihOdBQKnY3UXsMyNaE25+yvyNWpmyJiePRbTUd+cpLnycnqG9Ll8v6TpFXb6ahFMjlAFfJNQYlREfseClTHSRjZNxfsXGQCsJh6TZAq7jOB5hCk3q41eOUFWARxbyj8j59NBV8fSQrrGJJ9/VZKQeYiQlBB9KpK4PrnH84oeQ8i+VSbVr5w=
on:
branch: release/**
tags: false
condition: $TRAVIS_PYTHON_VERSION = "3.5"
- provider: pypi
distributions: sdist
user: beelit94
password:
secure: 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
on:
branch: master
tags: false
condition: $TRAVIS_PYTHON_VERSION = "3.5"
notifications:
email:
recipients:
- beelit94@gmail.com

230
python_terraform/__init__.py
View file

@ -1,6 +1,3 @@
# -*- coding: utf-8 -*-
# above is for compatibility of python2.7.11
import subprocess import subprocess
import os import os
import sys import sys
@ -11,17 +8,10 @@ import tempfile
from python_terraform.tfstate import Tfstate from python_terraform.tfstate import Tfstate
try: # Python 2.7+ logger = logging.getLogger(__name__)
from logging import NullHandler
except ImportError:
class NullHandler(logging.Handler):
def emit(self, record):
pass
log = logging.getLogger(__name__) COMMAND_WITH_SUBCOMMANDS = {"workspace"}
log.addHandler(NullHandler())
COMMAND_WITH_SUBCOMMANDS = ['workspace']
class IsFlagged: class IsFlagged:
pass pass
@ -39,12 +29,14 @@ class TerraformCommandError(subprocess.CalledProcessError):
class Terraform(object): class Terraform(object):
""" """Wrapper of terraform command line tool.
Wrapper of terraform command line tool
https://www.terraform.io/ https://www.terraform.io/
""" """
def __init__(self, working_dir=None, def __init__(
self,
working_dir=None,
targets=None, targets=None,
state=None, state=None,
variables=None, variables=None,
@ -75,8 +67,9 @@ class Terraform(object):
self.targets = [] if targets is None else targets self.targets = [] if targets is None else targets
self.variables = dict() if variables is None else variables self.variables = dict() if variables is None else variables
self.parallelism = parallelism self.parallelism = parallelism
self.terraform_bin_path = terraform_bin_path \ self.terraform_bin_path = (
if terraform_bin_path else 'terraform' terraform_bin_path if terraform_bin_path else "terraform"
)
self.var_file = var_file self.var_file = var_file
self.temp_var_files = VariableFiles() self.temp_var_files = VariableFiles()
@ -87,17 +80,23 @@ class Terraform(object):
def __getattr__(self, item): def __getattr__(self, item):
def wrapper(*args, **kwargs): def wrapper(*args, **kwargs):
cmd_name = str(item) cmd_name = str(item)
if cmd_name.endswith('_cmd'): if cmd_name.endswith("_cmd"):
cmd_name = cmd_name[:-4] cmd_name = cmd_name[:-4]
log.debug('called with %r and %r' % (args, kwargs)) logger.debug("called with %r and %r", args, kwargs)
return self.cmd(cmd_name, *args, **kwargs) return self.cmd(cmd_name, *args, **kwargs)
return wrapper return wrapper
def apply(self, dir_or_plan=None, input=False, skip_plan=False, no_color=IsFlagged, def apply(
**kwargs): self,
""" dir_or_plan=None,
refer to https://terraform.io/docs/commands/apply.html input=False,
skip_plan=False,
no_color=IsFlagged,
**kwargs,
):
"""Refer to https://terraform.io/docs/commands/apply.html
no-color is flagged by default no-color is flagged by default
:param no_color: disable color of stdout :param no_color: disable color of stdout
:param input: disable prompt for a missing variable :param input: disable prompt for a missing variable
@ -107,58 +106,63 @@ class Terraform(object):
:returns return_code, stdout, stderr :returns return_code, stdout, stderr
""" """
default = kwargs default = kwargs
default['input'] = input default["input"] = input
default['no_color'] = no_color default["no_color"] = no_color
default['auto-approve'] = (skip_plan == True) default["auto-approve"] = skip_plan is True
option_dict = self._generate_default_options(default) option_dict = self._generate_default_options(default)
args = self._generate_default_args(dir_or_plan) args = self._generate_default_args(dir_or_plan)
return self.cmd('apply', *args, **option_dict) return self.cmd("apply", *args, **option_dict)
def _generate_default_args(self, dir_or_plan): def _generate_default_args(self, dir_or_plan):
return [dir_or_plan] if dir_or_plan else [] return [dir_or_plan] if dir_or_plan else []
def _generate_default_options(self, input_options): def _generate_default_options(self, input_options):
option_dict = dict() option_dict = dict()
option_dict['state'] = self.state option_dict["state"] = self.state
option_dict['target'] = self.targets option_dict["target"] = self.targets
option_dict['var'] = self.variables option_dict["var"] = self.variables
option_dict['var_file'] = self.var_file option_dict["var_file"] = self.var_file
option_dict['parallelism'] = self.parallelism option_dict["parallelism"] = self.parallelism
option_dict['no_color'] = IsFlagged option_dict["no_color"] = IsFlagged
option_dict['input'] = False option_dict["input"] = False
option_dict.update(input_options) option_dict.update(input_options)
return option_dict return option_dict
def destroy(self, dir_or_plan=None, force=IsFlagged, **kwargs): def destroy(self, dir_or_plan=None, force=IsFlagged, **kwargs):
""" """Refer to https://www.terraform.io/docs/commands/destroy.html
refer to https://www.terraform.io/docs/commands/destroy.html
force/no-color option is flagged by default force/no-color option is flagged by default
:return: ret_code, stdout, stderr :return: ret_code, stdout, stderr
""" """
default = kwargs default = kwargs
default['force'] = force default["force"] = force
options = self._generate_default_options(default) options = self._generate_default_options(default)
args = self._generate_default_args(dir_or_plan) args = self._generate_default_args(dir_or_plan)
return self.cmd('destroy', *args, **options) return self.cmd("destroy", *args, **options)
def plan(self, dir_or_plan=None, detailed_exitcode=IsFlagged, **kwargs): def plan(self, dir_or_plan=None, detailed_exitcode=IsFlagged, **kwargs):
""" """Refer to https://www.terraform.io/docs/commands/plan.html
refer to https://www.terraform.io/docs/commands/plan.html
:param detailed_exitcode: Return a detailed exit code when the command exits. :param detailed_exitcode: Return a detailed exit code when the command exits.
:param dir_or_plan: relative path to plan/folder :param dir_or_plan: relative path to plan/folder
:param kwargs: options :param kwargs: options
:return: ret_code, stdout, stderr :return: ret_code, stdout, stderr
""" """
options = kwargs options = kwargs
options['detailed_exitcode'] = detailed_exitcode options["detailed_exitcode"] = detailed_exitcode
options = self._generate_default_options(options) options = self._generate_default_options(options)
args = self._generate_default_args(dir_or_plan) args = self._generate_default_args(dir_or_plan)
return self.cmd('plan', *args, **options) return self.cmd("plan", *args, **options)
def init(self, dir_or_plan=None, backend_config=None, def init(
reconfigure=IsFlagged, backend=True, **kwargs): self,
""" dir_or_plan=None,
refer to https://www.terraform.io/docs/commands/init.html backend_config=None,
reconfigure=IsFlagged,
backend=True,
**kwargs,
):
"""Refer to https://www.terraform.io/docs/commands/init.html
By default, this assumes you want to use backend config, and tries to By default, this assumes you want to use backend config, and tries to
init fresh. The flags -reconfigure and -backend=true are default. init fresh. The flags -reconfigure and -backend=true are default.
@ -174,16 +178,15 @@ class Terraform(object):
:return: ret_code, stdout, stderr :return: ret_code, stdout, stderr
""" """
options = kwargs options = kwargs
options['backend_config'] = backend_config options["backend_config"] = backend_config
options['reconfigure'] = reconfigure options["reconfigure"] = reconfigure
options['backend'] = backend options["backend"] = backend
options = self._generate_default_options(options) options = self._generate_default_options(options)
args = self._generate_default_args(dir_or_plan) args = self._generate_default_args(dir_or_plan)
return self.cmd('init', *args, **options) return self.cmd("init", *args, **options)
def generate_cmd_string(self, cmd, *args, **kwargs): def generate_cmd_string(self, cmd, *args, **kwargs):
""" """For any generate_cmd_string doesn't written as public method of Terraform
for any generate_cmd_string doesn't written as public method of terraform
examples: examples:
1. call import command, 1. call import command,
@ -213,50 +216,50 @@ class Terraform(object):
cmds.append(subcommand) cmds.append(subcommand)
for option, value in kwargs.items(): for option, value in kwargs.items():
if '_' in option: if "_" in option:
option = option.replace('_', '-') option = option.replace("_", "-")
if type(value) is list: if type(value) is list:
for sub_v in value: for sub_v in value:
cmds += ['-{k}={v}'.format(k=option, v=sub_v)] cmds += [f"-{option}={sub_v}"]
continue continue
if type(value) is dict: if type(value) is dict:
if 'backend-config' in option: if "backend-config" in option:
for bk, bv in value.items(): for bk, bv in value.items():
cmds += ['-backend-config={k}={v}'.format(k=bk, v=bv)] cmds += [f"-backend-config={bk}={bv}"]
continue continue
# since map type sent in string won't work, create temp var file for # since map type sent in string won't work, create temp var file for
# variables, and clean it up later # variables, and clean it up later
elif option == 'var': elif option == "var":
# We do not create empty var-files if there is no var passed. # We do not create empty var-files if there is no var passed.
# An empty var-file would result in an error: An argument or block definition is required here # An empty var-file would result in an error: An argument or block definition is required here
if value: if value:
filename = self.temp_var_files.create(value) filename = self.temp_var_files.create(value)
cmds += ['-var-file={0}'.format(filename)] cmds += [f"-var-file={filename}"]
continue continue
# simple flag, # simple flag,
if value is IsFlagged: if value is IsFlagged:
cmds += ['-{k}'.format(k=option)] cmds += ["-{k}".format(k=option)]
continue continue
if value is None or value is IsNotFlagged: if value is None or value is IsNotFlagged:
continue continue
if type(value) is bool: if type(value) is bool:
value = 'true' if value else 'false' value = "true" if value else "false"
cmds += ['-{k}={v}'.format(k=option, v=value)] cmds += [f"-{option}={value}"]
cmds += args cmds += args
return cmds return cmds
def cmd(self, cmd, *args, **kwargs): def cmd(self, cmd, *args, **kwargs):
""" """Run a terraform command, if success, will try to read state file
run a terraform command, if success, will try to read state file
:param cmd: command and sub-command of terraform, seperated with space :param cmd: command and sub-command of terraform, seperated with space
refer to https://www.terraform.io/docs/commands/index.html refer to https://www.terraform.io/docs/commands/index.html
:param args: arguments of a command :param args: arguments of a command
@ -281,9 +284,9 @@ class Terraform(object):
err: The captured stderr, or None if not captured err: The captured stderr, or None if not captured
:return: ret_code, out, err :return: ret_code, out, err
""" """
capture_output = kwargs.pop('capture_output', True) capture_output = kwargs.pop("capture_output", True)
raise_on_error = kwargs.pop('raise_on_error', False) raise_on_error = kwargs.pop("raise_on_error", False)
synchronous = kwargs.pop('synchronous', True) synchronous = kwargs.pop("synchronous", True)
if capture_output is True: if capture_output is True:
stderr = subprocess.PIPE stderr = subprocess.PIPE
@ -296,7 +299,7 @@ class Terraform(object):
stdout = sys.stdout stdout = sys.stdout
cmds = self.generate_cmd_string(cmd, *args, **kwargs) cmds = self.generate_cmd_string(cmd, *args, **kwargs)
log.debug('command: {c}'.format(c=' '.join(cmds))) logger.debug("Command: %s", " ".join(cmds))
working_folder = self.working_dir if self.working_dir else None working_folder = self.working_dir if self.working_dir else None
@ -304,42 +307,41 @@ class Terraform(object):
if self.is_env_vars_included: if self.is_env_vars_included:
environ_vars = os.environ.copy() environ_vars = os.environ.copy()
p = subprocess.Popen(cmds, stdout=stdout, stderr=stderr, p = subprocess.Popen(
cwd=working_folder, env=environ_vars) cmds, stdout=stdout, stderr=stderr, cwd=working_folder, env=environ_vars
)
if not synchronous: if not synchronous:
return p, None, None return p, None, None
out, err = p.communicate() out, err = p.communicate()
ret_code = p.returncode ret_code = p.returncode
log.debug('output: {o}'.format(o=out)) logger.debug("output: %s", out)
if ret_code == 0: if ret_code == 0:
self.read_state_file() self.read_state_file()
else: else:
log.warning('error: {e}'.format(e=err)) logger.warning("error: %s", err)
self.temp_var_files.clean_up() self.temp_var_files.clean_up()
if capture_output is True: if capture_output is True:
out = out.decode('utf-8') out = out.decode()
err = err.decode('utf-8') err = err.decode()
else: else:
out = None out = None
err = None err = None
if ret_code != 0 and raise_on_error: if ret_code and raise_on_error:
raise TerraformCommandError( raise TerraformCommandError(ret_code, " ".join(cmds), out=out, err=err)
ret_code, ' '.join(cmds), out=out, err=err)
return ret_code, out, err return ret_code, out, err
def output(self, *args, **kwargs): def output(self, *args, **kwargs):
""" """Refer https://www.terraform.io/docs/commands/output.html
https://www.terraform.io/docs/commands/output.html
Note that this method does not conform to the (ret_code, out, err) return convention. To use Note that this method does not conform to the (ret_code, out, err) return
the "output" command with the standard convention, call "output_cmd" instead of convention. To use the "output" command with the standard convention,
"output". call "output_cmd" instead of "output".
:param args: Positional arguments. There is one optional positional :param args: Positional arguments. There is one optional positional
argument NAME; if supplied, the returned output text argument NAME; if supplied, the returned output text
@ -357,15 +359,15 @@ class Terraform(object):
dict of named dicts each with 'value', 'sensitive', and 'type', dict of named dicts each with 'value', 'sensitive', and 'type',
if NAME is not provided if NAME is not provided
""" """
full_value = kwargs.pop('full_value', False) full_value = kwargs.pop("full_value", False)
name_provided = (len(args) > 0) name_provided = bool(len(args))
kwargs['json'] = IsFlagged kwargs["json"] = IsFlagged
if not kwargs.get('capture_output', True) is True: if not kwargs.get("capture_output", True) is True:
raise ValueError('capture_output is required for this method') raise ValueError("capture_output is required for this method")
ret, out, err = self.output_cmd(*args, **kwargs) ret, out, err = self.output_cmd(*args, **kwargs)
if ret != 0: if ret:
return None return None
out = out.lstrip() out = out.lstrip()
@ -373,68 +375,63 @@ class Terraform(object):
value = json.loads(out) value = json.loads(out)
if name_provided and not full_value: if name_provided and not full_value:
value = value['value'] value = value["value"]
return value return value
def read_state_file(self, file_path=None): def read_state_file(self, file_path=None):
""" """Read .tfstate file
read .tfstate file
:param file_path: relative path to working dir :param file_path: relative path to working dir
:return: states file in dict type :return: states file in dict type
""" """
working_dir = self.working_dir or '' working_dir = self.working_dir or ""
file_path = file_path or self.state or '' file_path = file_path or self.state or ""
if not file_path: if not file_path:
backend_path = os.path.join(file_path, '.terraform', backend_path = os.path.join(file_path, ".terraform", "terraform.tfstate")
'terraform.tfstate')
if os.path.exists(os.path.join(working_dir, backend_path)): if os.path.exists(os.path.join(working_dir, backend_path)):
file_path = backend_path file_path = backend_path
else: else:
file_path = os.path.join(file_path, 'terraform.tfstate') file_path = os.path.join(file_path, "terraform.tfstate")
file_path = os.path.join(working_dir, file_path) file_path = os.path.join(working_dir, file_path)
self.tfstate = Tfstate.load_file(file_path) self.tfstate = Tfstate.load_file(file_path)
def set_workspace(self, workspace, *args, **kwargs): def set_workspace(self, workspace, *args, **kwargs):
""" """Set workspace
set workspace
:param workspace: the desired workspace. :param workspace: the desired workspace.
:return: status :return: status
""" """
return self.cmd("workspace", "select", workspace, *args, **kwargs)
return self.cmd('workspace', 'select', workspace, *args, **kwargs)
def create_workspace(self, workspace, *args, **kwargs): def create_workspace(self, workspace, *args, **kwargs):
""" """Create workspace
create workspace
:param workspace: the desired workspace. :param workspace: the desired workspace.
:return: status :return: status
""" """
return self.cmd("workspace", "new", workspace, *args, **kwargs)
return self.cmd('workspace', 'new', workspace, *args, **kwargs)
def delete_workspace(self, workspace, *args, **kwargs): def delete_workspace(self, workspace, *args, **kwargs):
""" """Delete workspace
delete workspace
:param workspace: the desired workspace. :param workspace: the desired workspace.
:return: status :return: status
""" """
return self.cmd("workspace", "delete", workspace, *args, **kwargs)
return self.cmd('workspace', 'delete', workspace, *args, **kwargs)
def show_workspace(self, **kwargs): def show_workspace(self, **kwargs):
""" """Show workspace, this command does not need the [DIR] part
show workspace, this command does not need the [DIR] part
:return: workspace :return: workspace
""" """
return self.cmd("workspace", "show", **kwargs)
return self.cmd('workspace', 'show', **kwargs)
def __exit__(self, exc_type, exc_value, traceback): def __exit__(self, exc_type, exc_value, traceback):
self.temp_var_files.clean_up() self.temp_var_files.clean_up()
@ -445,11 +442,12 @@ class VariableFiles(object):
self.files = [] self.files = []
def create(self, variables): def create(self, variables):
with tempfile.NamedTemporaryFile('w+t', suffix='.tfvars.json', delete=False) as temp: with tempfile.NamedTemporaryFile(
log.debug('{0} is created'.format(temp.name)) "w+t", suffix=".tfvars.json", delete=False
) as temp:
logger.debug("%s is created", temp.name)
self.files.append(temp) self.files.append(temp)
log.debug( logger.debug("variables wrote to tempfile: %s", variables)
'variables wrote to tempfile: {0}'.format(str(variables)))
temp.write(json.dumps(variables)) temp.write(json.dumps(variables))
file_name = temp.name file_name = temp.name

16
python_terraform/tfstate.py
View file

@ -1,14 +1,11 @@
# -*- coding: utf-8 -*-
# above is for compatibility of python2.7.11
import json import json
import os import os
import logging import logging
log = logging.getLogger(__name__) logger = logging.getLogger(__name__)
class Tfstate(object): class Tfstate:
def __init__(self, data=None): def __init__(self, data=None):
self.tfstate_file = None self.tfstate_file = None
self.native_data = data self.native_data = data
@ -17,10 +14,11 @@ class Tfstate(object):
@staticmethod @staticmethod
def load_file(file_path): def load_file(file_path):
"""Read the tfstate file and load its contents.
Parses then as JSON and put the result into the object.
""" """
Read the tfstate file and load its contents, parses then as JSON and put the result into the object logger.debug('read data from %s', file_path)
"""
log.debug('read data from {0}'.format(file_path))
if os.path.exists(file_path): if os.path.exists(file_path):
with open(file_path) as f: with open(file_path) as f:
json_data = json.load(f) json_data = json.load(f)
@ -29,6 +27,6 @@ class Tfstate(object):
tf_state.tfstate_file = file_path tf_state.tfstate_file = file_path
return tf_state return tf_state
log.debug('{0} is not exist'.format(file_path)) logger.debug('%s is not exist', file_path)
return Tfstate() return Tfstate()