492 lines
14 KiB
Python
492 lines
14 KiB
Python
import os
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import sys
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import click
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import functools
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import re
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from concurrent.futures import ThreadPoolExecutor, as_completed
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from . import __version__
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from .core import CloudBender
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from .utils import setup_logging, get_docker_version
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from .exceptions import InvalidProjectDir
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from .pulumi import get_pulumi_version
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import logging
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logger = logging.getLogger(__name__)
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@click.group()
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@click.option(
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"--profile",
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"profile",
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help="Use named AWS .config profile, overwrites any stack config",
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)
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@click.option(
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"--region",
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"region",
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help="Use region, overwrites any stack config",
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)
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@click.option("--dir", "directory", help="Specify cloudbender project directory.")
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@click.option("--debug", is_flag=True, help="Turn on debug logging.")
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@click.pass_context
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def cli(ctx, profile, region, debug, directory):
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setup_logging(debug)
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# Skip parsing all the things if we just want the versions
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if ctx.invoked_subcommand == "version":
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return
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# Make sure our root is abs
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if directory:
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if not os.path.isabs(directory):
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directory = os.path.normpath(os.path.join(os.getcwd(), directory))
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elif os.getenv("CLOUDBENDER_PROJECT_ROOT"):
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directory = os.getenv("CLOUDBENDER_PROJECT_ROOT")
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else:
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directory = os.getcwd()
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# Read global config
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try:
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cb = CloudBender(directory, profile, region)
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except InvalidProjectDir as e:
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logger.error(e)
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sys.exit(1)
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# Only load stackgroups to get profile and region
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if ctx.invoked_subcommand == "wrap":
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cb.read_config(loadStacks=False)
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else:
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cb.read_config()
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cb.dump_config()
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ctx.obj = cb
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@click.command()
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def version():
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"""Displays own version and all dependencies"""
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logger.error(f"CloudBender: {__version__}")
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# Pulumi
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pulumi_version = get_pulumi_version()
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if not pulumi_version:
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logger.error(
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"Pulumi: Error calling pulumi, see https://www.pulumi.com/docs/get-started/install/"
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)
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else:
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logger.error(f"Pulumi: {pulumi_version}")
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# Docker / podman version
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docker_version = get_docker_version()
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if not docker_version:
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logger.error("Podman/Docker: Cannot call podman nor docker")
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else:
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logger.error(f"Podman/Docker: {docker_version}")
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@click.command()
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@click.argument("stack_names", nargs=-1)
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@click.option("--multi", is_flag=True, help="Allow more than one stack to match")
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@click.pass_obj
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def render(cb, stack_names, multi):
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"""Renders template and its parameters - CFN only"""
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stacks = _find_stacks(cb, stack_names, multi)
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_render(stacks)
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@click.command()
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@click.argument("stack_names", nargs=-1)
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@click.option("--multi", is_flag=True, help="Allow more than one stack to match")
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@click.pass_obj
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def sync(cb, stack_names, multi):
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"""Renders template and provisions it right away"""
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stacks = _find_stacks(cb, stack_names, multi)
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_render(stacks)
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_provision(cb, stacks)
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@click.command()
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@click.argument("stack_names", nargs=-1)
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@click.option("--multi", is_flag=True, help="Allow more than one stack to match")
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@click.pass_obj
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def validate(cb, stack_names, multi):
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"""Validates already rendered templates using cfn-lint - CFN only"""
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stacks = _find_stacks(cb, stack_names, multi)
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for s in stacks:
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ret = s.validate()
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if ret:
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sys.exit(ret)
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@click.command()
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@click.argument("stack_names", nargs=-1)
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@click.option("--multi", is_flag=True, help="Allow more than one stack to match")
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@click.option(
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"--include", default=".*", help="regex matching wanted outputs, default '.*'"
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)
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@click.option(
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"--values",
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is_flag=True,
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help="Only output values, most useful if only one outputs is returned",
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)
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@click.pass_obj
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def outputs(cb, stack_names, multi, include, values):
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"""Prints all stack outputs"""
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stacks = _find_stacks(cb, stack_names, multi)
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for s in stacks:
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s.get_outputs()
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for output in s.outputs.keys():
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if re.search(include, output):
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if values:
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print("{}".format(output))
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else:
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print("{}={}".format(output, s.outputs[output]))
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@click.command()
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@click.argument("stack_names", nargs=-1)
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@click.option("--multi", is_flag=True, help="Allow more than one stack to match")
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@click.pass_obj
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def docs(cb, stack_names, multi):
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"""Outputs docs for stack(s). For Pulumi stacks prints out docstring. For CloudFormation templates render a markdown file. Same idea as helm-docs."""
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stacks = _find_stacks(cb, stack_names, multi)
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for s in stacks:
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s.docs()
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@click.command()
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@click.argument("stack_name")
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@click.argument("change_set_name")
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@click.pass_obj
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def create_change_set(cb, stack_name, change_set_name):
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"""Creates a change set for an existing stack - CFN only"""
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stacks = _find_stacks(cb, [stack_name])
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for s in stacks:
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s.create_change_set(change_set_name)
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@click.command()
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@click.argument("stack_name")
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@click.pass_obj
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def refresh(cb, stack_name):
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"""Refreshes Pulumi stack / Drift detection"""
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stacks = _find_stacks(cb, [stack_name])
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for s in stacks:
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if s.mode == "pulumi":
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s.refresh()
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else:
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logger.info("{} uses Cloudformation, refresh skipped.".format(s.stackname))
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@click.command()
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@click.argument("stack_name")
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@click.argument("function", default="")
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@click.argument("args", nargs=-1)
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@click.pass_obj
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def execute(cb, stack_name, function, args):
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"""Executes custom Python function within an existing stack context"""
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stacks = _find_stacks(cb, [stack_name])
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for s in stacks:
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if s.mode == "pulumi":
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ret = s.execute(function, args)
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if ret:
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raise click.Abort()
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else:
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logger.info(
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"{} uses Cloudformation, no execute feature available.".format(
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s.stackname
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)
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)
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@click.command()
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@click.argument("stack_name")
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@click.option(
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"-r",
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"--remove-pending-operations",
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is_flag=True,
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help="All pending stack operations are removed and the stack will be re-imported",
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)
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@click.pass_obj
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def export(cb, stack_name, remove_pending_operations=False):
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"""Exports a Pulumi stack to repair state"""
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stacks = _find_stacks(cb, [stack_name])
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for s in stacks:
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if s.mode == "pulumi":
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s.export(remove_pending_operations)
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else:
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logger.info("{} uses Cloudformation, export skipped.".format(s.stackname))
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@click.command()
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@click.argument("stack_name")
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@click.pass_obj
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def assimilate(cb, stack_name):
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"""Imports potentially existing resources into Pulumi stack"""
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stacks = _find_stacks(cb, [stack_name])
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for s in stacks:
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if s.mode == "pulumi":
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s.assimilate()
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else:
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logger.info(
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"{} uses Cloudformation, cannot assimilate.".format(s.stackname)
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)
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@click.command()
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@click.argument("stack_name")
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@click.argument("key")
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@click.argument("value")
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@click.option("--secret", is_flag=True, help="Value is a secret")
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@click.pass_obj
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def set_config(cb, stack_name, key, value, secret=False):
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"""Sets a config value, encrypts with stack key if secret"""
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stacks = _find_stacks(cb, [stack_name])
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for s in stacks:
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s.set_config(key, value, secret)
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@click.command()
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@click.argument("stack_name")
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@click.argument("key")
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@click.pass_obj
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def get_config(cb, stack_name, key):
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"""Get a config value, decrypted if secret"""
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stacks = _find_stacks(cb, [stack_name])
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for s in stacks:
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s.get_config(key)
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@click.command()
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@click.argument("stack_name")
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@click.pass_obj
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def preview(cb, stack_name):
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"""Preview of Pulumi stack up operation"""
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stacks = _find_stacks(cb, [stack_name])
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for s in stacks:
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if s.mode == "pulumi":
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s.preview()
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else:
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logger.warning(
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"{} uses Cloudformation, use create-change-set for previews.".format(
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s.stackname
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)
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)
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@click.command()
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@click.argument("stack_names", nargs=-1)
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@click.option("--multi", is_flag=True, help="Allow more than one stack to match")
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@click.pass_obj
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def provision(cb, stack_names, multi):
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"""Creates or updates stacks or stack groups"""
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stacks = _find_stacks(cb, stack_names, multi)
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_provision(cb, stacks)
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@click.command()
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@click.argument("stack_names", nargs=-1)
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@click.option("--multi", is_flag=True, help="Allow more than one stack to match")
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@click.pass_obj
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def delete(cb, stack_names, multi):
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"""Deletes stacks or stack groups"""
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stacks = _find_stacks(cb, stack_names, multi)
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# Reverse steps
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steps = [s for s in sort_stacks(cb, stacks)]
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delete_steps = steps[::-1]
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for step in delete_steps:
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if step:
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with ThreadPoolExecutor(max_workers=len(step)) as group:
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futures = []
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for stack in step:
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if stack.multi_delete:
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futures.append(group.submit(stack.delete))
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for future in as_completed(futures):
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future.result()
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@click.command()
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@click.argument("stack_group", nargs=1, required=True)
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@click.argument("cmd", nargs=-1, required=True)
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@click.pass_obj
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def wrap(cb, stack_group, cmd):
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"""Execute custom external program"""
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sg = cb.sg.get_stackgroup(stack_group)
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cb.wrap(sg, " ".join(cmd))
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@click.command()
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@click.pass_obj
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def clean(cb):
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"""Deletes all previously rendered files locally"""
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cb.clean()
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def sort_stacks(cb, stacks):
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"""Sort stacks by dependencies"""
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data = {}
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for s in stacks:
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if s.mode == "pulumi":
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data[s.id] = set()
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continue
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# To resolve dependencies we have to read each template
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s.read_template_file()
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deps = []
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for d in s.dependencies:
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# For now we assume deps are artifacts so we prepend them with our local profile and region to match stack.id
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for dep_stack in cb.filter_stacks(
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{"region": s.region, "profile": s.profile, "provides": d}
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):
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deps.append(dep_stack.id)
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# also look for global services
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for dep_stack in cb.filter_stacks(
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{"region": "global", "profile": s.profile, "provides": d}
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):
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deps.append(dep_stack.id)
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data[s.id] = set(deps)
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logger.debug("Stack {} depends on {}".format(s.id, deps))
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# Ignore self dependencies
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for k, v in data.items():
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v.discard(k)
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if data:
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extra_items_in_deps = functools.reduce(set.union, data.values()) - set(
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data.keys()
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)
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data.update({item: set() for item in extra_items_in_deps})
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while True:
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ordered = set(item for item, dep in data.items() if not dep)
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if not ordered:
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break
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# return list of stack objects rather than just names
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result = []
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for o in ordered:
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for s in stacks:
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if s.id == o:
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result.append(s)
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yield result
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data = {
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item: (dep - ordered) for item, dep in data.items() if item not in ordered
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}
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assert not data, "A cyclic dependency exists amongst %r" % data
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def _find_stacks(cb, stack_names, multi=False):
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"""search stacks by name"""
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stacks = []
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for s in stack_names:
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stacks = stacks + cb.resolve_stacks(s)
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if not multi and len(stacks) > 1:
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logger.error(
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"Found more than one stack matching name ({}). Please set --multi if that is what you want.".format(
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", ".join(stack_names)
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)
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)
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raise click.Abort()
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if not stacks:
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logger.error("Cannot find stack matching: {}".format(", ".join(stack_names)))
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raise click.Abort()
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return stacks
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def _render(stacks):
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"""Utility function to reuse code between tasks"""
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for s in stacks:
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if s.mode != "pulumi":
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s.render()
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s.write_template_file()
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else:
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logger.info("{} uses Pulumi, render skipped.".format(s.stackname))
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def _anyPulumi(step):
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for stack in step:
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if stack.mode == "pulumi":
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return True
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return False
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def _provision(cb, stacks):
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"""Utility function to reuse code between tasks"""
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for step in sort_stacks(cb, stacks):
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if step:
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# Pulumi is still not thread safe
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if _anyPulumi(step):
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_threads = 1
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else
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_threads = len(step)
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with ThreadPoolExecutor(max_workers=_threads)) as group:
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futures = []
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for stack in step:
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if stack.mode != "pulumi":
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status = stack.get_status()
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if not status:
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futures.append(group.submit(stack.create))
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else:
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futures.append(group.submit(stack.update))
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# Pulumi only needs "up"
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else:
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futures.append(group.submit(stack.create))
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for future in as_completed(futures):
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future.result()
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cli.add_command(version)
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cli.add_command(render)
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cli.add_command(sync)
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cli.add_command(validate)
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cli.add_command(provision)
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cli.add_command(delete)
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cli.add_command(clean)
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cli.add_command(create_change_set)
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cli.add_command(outputs)
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cli.add_command(docs)
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cli.add_command(refresh)
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cli.add_command(preview)
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cli.add_command(set_config)
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cli.add_command(get_config)
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cli.add_command(export)
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cli.add_command(assimilate)
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cli.add_command(execute)
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cli.add_command(wrap)
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if __name__ == "__main__":
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cli(obj={})
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