forked from cerc-io/stack-orchestrator
397 lines
18 KiB
Python
397 lines
18 KiB
Python
# Copyright © 2022, 2023 Vulcanize
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http:#www.gnu.org/licenses/>.
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import click
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from importlib import util
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import os
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from pathlib import Path
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from typing import List
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import random
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from shutil import copy, copyfile, copytree
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import sys
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from app.util import (get_stack_file_path, get_parsed_deployment_spec, get_parsed_stack_config, global_options, get_yaml,
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get_pod_list, get_pod_file_path, pod_has_scripts, get_pod_script_paths, get_plugin_code_paths)
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from app.deploy.deploy_types import DeploymentContext, DeployCommandContext, LaconicStackSetupCommand
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from app.deploy.deployer_factory import getDeployerConfigGenerator
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def _make_default_deployment_dir():
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return "deployment-001"
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def _get_ports(stack):
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ports = {}
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parsed_stack = get_parsed_stack_config(stack)
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pods = get_pod_list(parsed_stack)
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yaml = get_yaml()
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for pod in pods:
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pod_file_path = get_pod_file_path(parsed_stack, pod)
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parsed_pod_file = yaml.load(open(pod_file_path, "r"))
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if "services" in parsed_pod_file:
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for svc_name, svc in parsed_pod_file["services"].items():
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if "ports" in svc:
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# Ports can appear as strings or numbers. We normalize them as strings.
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ports[svc_name] = [str(x) for x in svc["ports"]]
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return ports
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def _get_named_volumes(stack):
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# Parse the compose files looking for named volumes
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named_volumes = []
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parsed_stack = get_parsed_stack_config(stack)
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pods = get_pod_list(parsed_stack)
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yaml = get_yaml()
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for pod in pods:
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pod_file_path = get_pod_file_path(parsed_stack, pod)
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parsed_pod_file = yaml.load(open(pod_file_path, "r"))
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if "volumes" in parsed_pod_file:
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volumes = parsed_pod_file["volumes"]
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for volume in volumes.keys():
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# Volume definition looks like:
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# 'laconicd-data': None
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named_volumes.append(volume)
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return named_volumes
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# If we're mounting a volume from a relatie path, then we
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# assume the directory doesn't exist yet and create it
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# so the deployment will start
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# Also warn if the path is absolute and doesn't exist
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def _create_bind_dir_if_relative(volume, path_string, compose_dir):
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path = Path(path_string)
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if not path.is_absolute():
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absolute_path = Path(compose_dir).parent.joinpath(path)
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absolute_path.mkdir(parents=True, exist_ok=True)
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else:
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if not path.exists():
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print(f"WARNING: mount path for volume {volume} does not exist: {path_string}")
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# See: https://stackoverflow.com/questions/45699189/editing-docker-compose-yml-with-pyyaml
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def _fixup_pod_file(pod, spec, compose_dir):
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# Fix up volumes
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if "volumes" in spec:
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spec_volumes = spec["volumes"]
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if "volumes" in pod:
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pod_volumes = pod["volumes"]
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for volume in pod_volumes.keys():
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if volume in spec_volumes:
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volume_spec = spec_volumes[volume]
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volume_spec_fixedup = volume_spec if Path(volume_spec).is_absolute() else f".{volume_spec}"
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_create_bind_dir_if_relative(volume, volume_spec, compose_dir)
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new_volume_spec = {"driver": "local",
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"driver_opts": {
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"type": "none",
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"device": volume_spec_fixedup,
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"o": "bind"
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}
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}
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pod["volumes"][volume] = new_volume_spec
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# Fix up ports
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if "ports" in spec:
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spec_ports = spec["ports"]
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for container_name, container_ports in spec_ports.items():
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if container_name in pod["services"]:
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pod["services"][container_name]["ports"] = container_ports
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def _commands_plugin_paths(ctx: DeployCommandContext):
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plugin_paths = get_plugin_code_paths(ctx.stack)
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ret = [p.joinpath("deploy", "commands.py") for p in plugin_paths]
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return ret
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# See: https://stackoverflow.com/a/54625079/1701505
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def _has_method(o, name):
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return callable(getattr(o, name, None))
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def call_stack_deploy_init(deploy_command_context):
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# Link with the python file in the stack
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# Call a function in it
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# If no function found, return None
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python_file_paths = _commands_plugin_paths(deploy_command_context)
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ret = None
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init_done = False
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for python_file_path in python_file_paths:
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if python_file_path.exists():
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spec = util.spec_from_file_location("commands", python_file_path)
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imported_stack = util.module_from_spec(spec)
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spec.loader.exec_module(imported_stack)
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if _has_method(imported_stack, "init"):
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if not init_done:
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ret = imported_stack.init(deploy_command_context)
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init_done = True
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else:
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# TODO: remove this restriction
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print(f"Skipping init() from plugin {python_file_path}. Only one init() is allowed.")
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return ret
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# TODO: fold this with function above
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def call_stack_deploy_setup(deploy_command_context, parameters: LaconicStackSetupCommand, extra_args):
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# Link with the python file in the stack
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# Call a function in it
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# If no function found, return None
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python_file_paths = _commands_plugin_paths(deploy_command_context)
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for python_file_path in python_file_paths:
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if python_file_path.exists():
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spec = util.spec_from_file_location("commands", python_file_path)
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imported_stack = util.module_from_spec(spec)
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spec.loader.exec_module(imported_stack)
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if _has_method(imported_stack, "setup"):
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imported_stack.setup(deploy_command_context, parameters, extra_args)
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# TODO: fold this with function above
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def call_stack_deploy_create(deployment_context, extra_args):
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# Link with the python file in the stack
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# Call a function in it
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# If no function found, return None
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python_file_paths = _commands_plugin_paths(deployment_context.command_context)
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for python_file_path in python_file_paths:
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if python_file_path.exists():
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spec = util.spec_from_file_location("commands", python_file_path)
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imported_stack = util.module_from_spec(spec)
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spec.loader.exec_module(imported_stack)
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if _has_method(imported_stack, "create"):
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imported_stack.create(deployment_context, extra_args)
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# Inspect the pod yaml to find config files referenced in subdirectories
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# other than the one associated with the pod
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def _find_extra_config_dirs(parsed_pod_file, pod):
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config_dirs = set()
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services = parsed_pod_file["services"]
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for service in services:
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service_info = services[service]
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if "volumes" in service_info:
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for volume in service_info["volumes"]:
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if ":" in volume:
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host_path = volume.split(":")[0]
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if host_path.startswith("../config"):
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config_dir = host_path.split("/")[2]
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if config_dir != pod:
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config_dirs.add(config_dir)
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return config_dirs
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def _get_mapped_ports(stack: str, map_recipe: str):
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port_map_recipes = ["any-variable-random", "localhost-same", "any-same", "localhost-fixed-random", "any-fixed-random"]
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ports = _get_ports(stack)
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if ports:
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# Implement any requested mapping recipe
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if map_recipe:
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if map_recipe in port_map_recipes:
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for service in ports.keys():
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ports_array = ports[service]
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for x in range(0, len(ports_array)):
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orig_port = ports_array[x]
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# Strip /udp suffix if present
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bare_orig_port = orig_port.replace("/udp", "")
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random_port = random.randint(20000, 50000) # Beware: we're relying on luck to not collide
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if map_recipe == "any-variable-random":
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# This is the default so take no action
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pass
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elif map_recipe == "localhost-same":
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# Replace instances of "- XX" with "- 127.0.0.1:XX"
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ports_array[x] = f"127.0.0.1:{bare_orig_port}:{orig_port}"
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elif map_recipe == "any-same":
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# Replace instances of "- XX" with "- 0.0.0.0:XX"
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ports_array[x] = f"0.0.0.0:{bare_orig_port}:{orig_port}"
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elif map_recipe == "localhost-fixed-random":
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# Replace instances of "- XX" with "- 127.0.0.1:<rnd>:XX"
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ports_array[x] = f"127.0.0.1:{random_port}:{orig_port}"
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elif map_recipe == "any-fixed-random":
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# Replace instances of "- XX" with "- 0.0.0.0:<rnd>:XX"
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ports_array[x] = f"0.0.0.0:{random_port}:{orig_port}"
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else:
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print("Error: bad map_recipe")
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else:
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print(f"Error: --map-ports-to-host must specify one of: {port_map_recipes}")
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sys.exit(1)
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return ports
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def _parse_config_variables(variable_values: str):
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result = None
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if variable_values:
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value_pairs = variable_values.split(",")
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if len(value_pairs):
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result_values = {}
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for value_pair in value_pairs:
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variable_value_pair = value_pair.split("=")
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if len(variable_value_pair) != 2:
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print(f"ERROR: config argument is not valid: {variable_values}")
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sys.exit(1)
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variable_name = variable_value_pair[0]
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variable_value = variable_value_pair[1]
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result_values[variable_name] = variable_value
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result = {"config": result_values}
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return result
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@click.command()
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@click.option("--config", help="Provide config variables for the deployment")
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@click.option("--output", required=True, help="Write yaml spec file here")
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@click.option("--map-ports-to-host", required=False,
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help="Map ports to the host as one of: any-variable-random (default), "
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"localhost-same, any-same, localhost-fixed-random, any-fixed-random")
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@click.pass_context
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def init(ctx, config, output, map_ports_to_host):
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yaml = get_yaml()
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stack = global_options(ctx).stack
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debug = global_options(ctx).debug
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default_spec_file_content = call_stack_deploy_init(ctx.obj)
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spec_file_content = {"stack": stack, "deploy-to": ctx.obj.deployer.name}
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if default_spec_file_content:
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spec_file_content.update(default_spec_file_content)
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config_variables = _parse_config_variables(config)
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if config_variables:
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# Implement merge, since update() overwrites
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orig_config = spec_file_content.get("config", {})
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new_config = config_variables["config"]
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merged_config = {**new_config, **orig_config}
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spec_file_content.update({"config": merged_config})
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if debug:
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print(f"Creating spec file for stack: {stack} with content: {spec_file_content}")
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ports = _get_mapped_ports(stack, map_ports_to_host)
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spec_file_content["ports"] = ports
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named_volumes = _get_named_volumes(stack)
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if named_volumes:
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volume_descriptors = {}
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for named_volume in named_volumes:
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volume_descriptors[named_volume] = f"./data/{named_volume}"
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spec_file_content["volumes"] = volume_descriptors
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with open(output, "w") as output_file:
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yaml.dump(spec_file_content, output_file)
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def _write_config_file(spec_file: Path, config_env_file: Path):
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spec_content = get_parsed_deployment_spec(spec_file)
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# Note: we want to write an empty file even if we have no config variables
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with open(config_env_file, "w") as output_file:
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if "config" in spec_content and spec_content["config"]:
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config_vars = spec_content["config"]
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if config_vars:
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for variable_name, variable_value in config_vars.items():
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output_file.write(f"{variable_name}={variable_value}\n")
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def _copy_files_to_directory(file_paths: List[Path], directory: Path):
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for path in file_paths:
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# Using copy to preserve the execute bit
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copy(path, os.path.join(directory, os.path.basename(path)))
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@click.command()
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@click.option("--spec-file", required=True, help="Spec file to use to create this deployment")
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@click.option("--deployment-dir", help="Create deployment files in this directory")
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# TODO: Hack
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@click.option("--network-dir", help="Network configuration supplied in this directory")
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@click.option("--initial-peers", help="Initial set of persistent peers")
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@click.pass_context
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def create(ctx, spec_file, deployment_dir, network_dir, initial_peers):
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# This function fails with a useful error message if the file doens't exist
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parsed_spec = get_parsed_deployment_spec(spec_file)
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stack_name = parsed_spec['stack']
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stack_file = get_stack_file_path(stack_name)
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parsed_stack = get_parsed_stack_config(stack_name)
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if global_options(ctx).debug:
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print(f"parsed spec: {parsed_spec}")
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if deployment_dir is None:
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deployment_dir = _make_default_deployment_dir()
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if os.path.exists(deployment_dir):
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print(f"Error: {deployment_dir} already exists")
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sys.exit(1)
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os.mkdir(deployment_dir)
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# Copy spec file and the stack file into the deployment dir
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copyfile(spec_file, os.path.join(deployment_dir, "spec.yml"))
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copyfile(stack_file, os.path.join(deployment_dir, os.path.basename(stack_file)))
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# Copy any config varibles from the spec file into an env file suitable for compose
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_write_config_file(spec_file, os.path.join(deployment_dir, "config.env"))
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# Copy the pod files into the deployment dir, fixing up content
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pods = get_pod_list(parsed_stack)
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destination_compose_dir = os.path.join(deployment_dir, "compose")
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os.mkdir(destination_compose_dir)
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destination_pods_dir = os.path.join(deployment_dir, "pods")
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os.mkdir(destination_pods_dir)
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data_dir = Path(__file__).absolute().parent.parent.joinpath("data")
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yaml = get_yaml()
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for pod in pods:
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pod_file_path = get_pod_file_path(parsed_stack, pod)
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parsed_pod_file = yaml.load(open(pod_file_path, "r"))
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extra_config_dirs = _find_extra_config_dirs(parsed_pod_file, pod)
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destination_pod_dir = os.path.join(destination_pods_dir, pod)
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os.mkdir(destination_pod_dir)
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if global_options(ctx).debug:
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print(f"extra config dirs: {extra_config_dirs}")
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_fixup_pod_file(parsed_pod_file, parsed_spec, destination_compose_dir)
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with open(os.path.join(destination_compose_dir, "docker-compose-%s.yml" % pod), "w") as output_file:
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yaml.dump(parsed_pod_file, output_file)
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# Copy the config files for the pod, if any
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config_dirs = {pod}
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config_dirs = config_dirs.union(extra_config_dirs)
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for config_dir in config_dirs:
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source_config_dir = data_dir.joinpath("config", config_dir)
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if os.path.exists(source_config_dir):
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destination_config_dir = os.path.join(deployment_dir, "config", config_dir)
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# If the same config dir appears in multiple pods, it may already have been copied
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if not os.path.exists(destination_config_dir):
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copytree(source_config_dir, destination_config_dir)
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# Copy the script files for the pod, if any
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if pod_has_scripts(parsed_stack, pod):
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destination_script_dir = os.path.join(destination_pod_dir, "scripts")
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os.mkdir(destination_script_dir)
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script_paths = get_pod_script_paths(parsed_stack, pod)
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_copy_files_to_directory(script_paths, destination_script_dir)
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# Delegate to the stack's Python code
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# The deploy create command doesn't require a --stack argument so we need to insert the
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# stack member here.
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deployment_command_context = ctx.obj
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deployment_command_context.stack = stack_name
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deployment_context = DeploymentContext(Path(deployment_dir), deployment_command_context)
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# Call the deployer to generate any deployer-specific files (e.g. for kind)
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deployer_config_generator = getDeployerConfigGenerator(parsed_spec["deploy-to"])
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# TODO: make deployment_dir a Path above
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deployer_config_generator.generate(Path(deployment_dir))
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call_stack_deploy_create(deployment_context, [network_dir, initial_peers])
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# TODO: this code should be in the stack .py files but
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# we haven't yet figured out how to integrate click across
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# the plugin boundary
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@click.command()
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@click.option("--node-moniker", help="Moniker for this node")
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@click.option("--chain-id", help="The new chain id")
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@click.option("--key-name", help="Name for new node key")
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@click.option("--gentx-files", help="List of comma-delimited gentx filenames from other nodes")
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@click.option("--genesis-file", help="Genesis file for the network")
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@click.option("--initialize-network", is_flag=True, default=False, help="Initialize phase")
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@click.option("--join-network", is_flag=True, default=False, help="Join phase")
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@click.option("--create-network", is_flag=True, default=False, help="Create phase")
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@click.option("--network-dir", help="Directory for network files")
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@click.argument('extra_args', nargs=-1)
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@click.pass_context
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def setup(ctx, node_moniker, chain_id, key_name, gentx_files, genesis_file, initialize_network, join_network, create_network,
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network_dir, extra_args):
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parmeters = LaconicStackSetupCommand(chain_id, node_moniker, key_name, initialize_network, join_network, create_network,
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gentx_files, genesis_file, network_dir)
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call_stack_deploy_setup(ctx.obj, parmeters, extra_args)
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