cerc-io/stack-orchestrator
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Initial implementation

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Former-commit-id: 68293cbaa3
This commit is contained in:
David Boreham 2023-02-20 06:09:35 -07:00
parent 547ca561c0
commit 142be179f4
2 changed files with 131 additions and 75 deletions
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47
app/base.py
View File

@ -13,22 +13,59 @@
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http:#www.gnu.org/licenses/>.
import os
from abc import ABC, abstractmethod
def get_stack(config, stack):
if stack == "package-registry":
return package_registry_stack(config, stack)
else:
return base_stack(config, stack)
class base_stack():
class base_stack(ABC):
def __init__(self, config, stack):
self.config = config
self.stack = stack
@abstractmethod
def ensure_available(self):
pass
@abstractmethod
def get_url(self):
pass
class package_registry_stack(base_stack):
def ensure_available(self):
self.url = "<no registry url set>"
# Check if we were given an external registry URL
url_from_environment = os.environ.get("CERC_NPM_REGISTRY_URL")
if url_from_environment:
if self.config.verbose:
print(f"Checking that base stack {self.stack} is available")
return 1
print(f"Using package registry url from CERC_NPM_REGISTRY_URL: {url_from_environment}")
self.url = url_from_environment
else:
# Otherwise we expect to use the local package-registry stack
# First check if the stack is up
# If not, print a message about how to start it and return fail to the caller
return False
# If it is available, get its mapped port and construct its URL
self.url = "http://gitea.local:3000/api/packages/cerc-io/npm/"
return True
def get_url(self):
return "http://gitea.local:3000/api/packages/cerc-io/npm/"
return self.url
# TODO: finish this implementation for the npm package registry
# Temporary helper functions while we figure out a good interface to the stack deploy code
def _is_stack_running(stack):
return True
def _get_stack_mapped_port(stack, service, exposed_port):
return 3000

155
app/deploy_system.py
View File

@ -46,74 +46,10 @@ def command(ctx, include, exclude, cluster, command, extra_args):
dry_run = ctx.obj.dry_run
stack = ctx.obj.stack
if local_stack:
dev_root_path = os.getcwd()[0:os.getcwd().rindex("stack-orchestrator")]
print(f'Local stack dev_root_path (CERC_REPO_BASE_DIR) overridden to: {dev_root_path}')
else:
dev_root_path = os.path.expanduser(config("CERC_REPO_BASE_DIR", default="~/cerc"))
# See: https://stackoverflow.com/questions/25389095/python-get-path-of-root-project-structure
compose_dir = Path(__file__).absolute().parent.joinpath("data", "compose")
if cluster is None:
# Create default unique, stable cluster name from confile file path
# TODO: change this to the config file path
path = os.path.realpath(sys.argv[0])
hash = hashlib.md5(path.encode()).hexdigest()
cluster = f"laconic-{hash}"
if verbose:
print(f"Using cluster name: {cluster}")
# See: https://stackoverflow.com/a/20885799/1701505
from . import data
with importlib.resources.open_text(data, "pod-list.txt") as pod_list_file:
all_pods = pod_list_file.read().splitlines()
pods_in_scope = []
if stack:
stack_config = get_parsed_stack_config(stack)
# TODO: syntax check the input here
pods_in_scope = stack_config['pods']
else:
pods_in_scope = all_pods
# Convert all pod definitions to v1.1 format
pods_in_scope = _convert_to_new_format(pods_in_scope)
if verbose:
print(f"Pods: {pods_in_scope}")
# Construct a docker compose command suitable for our purpose
compose_files = []
pre_start_commands = []
post_start_commands = []
for pod in pods_in_scope:
pod_name = pod["name"]
pod_repository = pod["repository"]
pod_path = pod["path"]
if include_exclude_check(pod_name, include, exclude):
if pod_repository is None or pod_repository == "internal":
compose_file_name = os.path.join(compose_dir, f"docker-compose-{pod_path}.yml")
else:
pod_root_dir = os.path.join(dev_root_path, pod_repository.split("/")[-1], pod["path"])
compose_file_name = os.path.join(pod_root_dir, "docker-compose.yml")
pod_pre_start_command = pod["pre_start_command"]
pod_post_start_command = pod["post_start_command"]
if pod_pre_start_command is not None:
pre_start_commands.append(os.path.join(pod_root_dir, pod_pre_start_command))
if pod_post_start_command is not None:
post_start_commands.append(os.path.join(pod_root_dir, pod_post_start_command))
compose_files.append(compose_file_name)
else:
if verbose:
print(f"Excluding: {pod_name}")
if verbose:
print(f"files: {compose_files}")
cluster_context = _make_cluster_context(ctx.obj, include, exclude, cluster)
# See: https://gabrieldemarmiesse.github.io/python-on-whales/sub-commands/compose/
docker = DockerClient(compose_files=compose_files, compose_project_name=cluster)
docker = DockerClient(compose_files=cluster_context.compose_files, compose_project_name=cluster_context.cluster)
extra_args_list = list(extra_args) or None
@ -123,10 +59,10 @@ def command(ctx, include, exclude, cluster, command, extra_args):
os.environ["CERC_SCRIPT_DEBUG"] = "true"
if verbose:
print(f"Running compose up for extra_args: {extra_args_list}")
for pre_start_command in pre_start_commands:
for pre_start_command in cluster_context.pre_start_commands:
_run_command(ctx.obj, cluster, pre_start_command)
docker.compose.up(detach=True, services=extra_args_list)
for post_start_command in post_start_commands:
for post_start_command in cluster_context.post_start_commands:
_run_command(ctx.obj, cluster, post_start_command)
elif command == "down":
if verbose:
@ -181,6 +117,89 @@ def command(ctx, include, exclude, cluster, command, extra_args):
docker.compose.logs()
def get_stack_status(stack):
pass
def _make_cluster_context(ctx, include, exclude, cluster):
if ctx.local_stack:
dev_root_path = os.getcwd()[0:os.getcwd().rindex("stack-orchestrator")]
print(f'Local stack dev_root_path (CERC_REPO_BASE_DIR) overridden to: {dev_root_path}')
else:
dev_root_path = os.path.expanduser(config("CERC_REPO_BASE_DIR", default="~/cerc"))
# See: https://stackoverflow.com/questions/25389095/python-get-path-of-root-project-structure
compose_dir = Path(__file__).absolute().parent.joinpath("data", "compose")
if cluster is None:
# Create default unique, stable cluster name from confile file path
# TODO: change this to the config file path
path = os.path.realpath(sys.argv[0])
hash = hashlib.md5(path.encode()).hexdigest()
cluster = f"laconic-{hash}"
if ctx.verbose:
print(f"Using cluster name: {cluster}")
# See: https://stackoverflow.com/a/20885799/1701505
from . import data
with importlib.resources.open_text(data, "pod-list.txt") as pod_list_file:
all_pods = pod_list_file.read().splitlines()
pods_in_scope = []
if ctx.stack:
stack_config = get_parsed_stack_config(ctx.stack)
# TODO: syntax check the input here
pods_in_scope = stack_config['pods']
else:
pods_in_scope = all_pods
# Convert all pod definitions to v1.1 format
pods_in_scope = _convert_to_new_format(pods_in_scope)
if ctx.verbose:
print(f"Pods: {pods_in_scope}")
# Construct a docker compose command suitable for our purpose
compose_files = []
pre_start_commands = []
post_start_commands = []
for pod in pods_in_scope:
pod_name = pod["name"]
pod_repository = pod["repository"]
pod_path = pod["path"]
if include_exclude_check(pod_name, include, exclude):
if pod_repository is None or pod_repository == "internal":
compose_file_name = os.path.join(compose_dir, f"docker-compose-{pod_path}.yml")
else:
pod_root_dir = os.path.join(dev_root_path, pod_repository.split("/")[-1], pod["path"])
compose_file_name = os.path.join(pod_root_dir, "docker-compose.yml")
pod_pre_start_command = pod["pre_start_command"]
pod_post_start_command = pod["post_start_command"]
if pod_pre_start_command is not None:
pre_start_commands.append(os.path.join(pod_root_dir, pod_pre_start_command))
if pod_post_start_command is not None:
post_start_commands.append(os.path.join(pod_root_dir, pod_post_start_command))
compose_files.append(compose_file_name)
else:
if ctx.verbose:
print(f"Excluding: {pod_name}")
if ctx.verbose:
print(f"files: {compose_files}")
return cluster_context(cluster, compose_files, pre_start_commands, post_start_commands)
class cluster_context:
def __init__(self, cluster, compose_files, pre_start_commands, post_start_commands) -> None:
self.cluster = cluster
self.compose_files = compose_files
self.pre_start_commands = pre_start_commands
self.post_start_commands = post_start_commands
def _convert_to_new_format(old_pod_array):
new_pod_array = []
for old_pod in old_pod_array: