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mf_configure.py
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mf_configure.py
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import boto3
import argparse
import json
import os
MF_CONFIG_VARS_TO_CFN_OUTPUT_KEYS = {
"METAFLOW_BATCH_JOB_QUEUE": "BatchJobQueueArn",
# 'METAFLOW_SERVICE_INTERNAL_URL': 'InternalServiceUrl',
"METAFLOW_SFN_DYNAMO_DB_TABLE": "DDBTableName",
"METAFLOW_DATATOOLS_S3ROOT": "MetaflowDataToolsS3Url",
"METAFLOW_SFN_IAM_ROLE": "StepFunctionsRoleArn",
"METAFLOW_SERVICE_URL": "ServiceUrl",
"METAFLOW_DATASTORE_SYSROOT_S3": "MetaflowDataStoreS3Url",
"METAFLOW_ECS_S3_ACCESS_IAM_ROLE": "ECSJobRoleForBatchJobs",
"METAFLOW_EVENTS_SFN_ACCESS_IAM_ROLE": "EventBridgeRoleArn",
}
EXTRA_ARGS = {
"METAFLOW_DEFAULT_DATASTORE": "s3",
"METAFLOW_DEFAULT_METADATA": "service",
}
def fetch_config_vars(stack_name: str) -> dict:
client = boto3.client("cloudformation")
response = client.describe_stacks(StackName=stack_name)
outputs = response["Stacks"][0]["Outputs"]
outputs_dict = {output["OutputKey"]: output["OutputValue"] for output in outputs}
cfg_dict = {
cfg_var: outputs_dict[cfn_output_key]
for cfg_var, cfn_output_key in MF_CONFIG_VARS_TO_CFN_OUTPUT_KEYS.items()
}
cfg_dict |= EXTRA_ARGS
return cfg_dict
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("-s", "--stack_name", type=str, required=True)
parser.add_argument(
"-p", "--profile", type=str, default="default", help="Metaflow profile name"
)
parser.add_argument(
"-home",
"--metaflow-home",
type=str,
default=os.path.expanduser("~/.metaflowconfig"),
)
args = parser.parse_args()
mf_cfg = fetch_config_vars(args.stack_name)
if not os.path.exists(args.metaflow_home):
os.makedirs(args.metaflow_home)
if args.profile == "default":
config_path = os.path.join(args.metaflow_home, "config.json")
else:
config_path = os.path.join(args.metaflow_home, f"config_{args.profile}.json")
with open(config_path, "w") as f:
json.dump(mf_cfg, f, indent=4)
print(f"Config written to {config_path}")