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Python

# Copyright 2019 Novartis Institutes for BioMedical Research Inc. Licensed
# under the Apache License, Version 2.0 (the "License"); you may not use
# this file except in compliance with the License. You may obtain a copy
# of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless
# required by applicable law or agreed to in writing, software distributed
# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
# OR CONDITIONS OF ANY KIND, either express or implied. See the License for
# the specific language governing permissions and limitations under the License.
import logging
import os
cellxgene_location = os.environ.get("CELLXGENE_LOCATION")
cellxgene_data = os.environ.get("CELLXGENE_DATA", "")
cellxgene_args = os.environ.get("CELLXGENE_ARGS", None)
gateway_port = int(os.environ.get("GATEWAY_PORT", "5005"))
external_host = os.environ.get(
"EXTERNAL_HOST",
os.environ.get("GATEWAY_HOST", f"localhost:{gateway_port}"),
)
external_protocol = os.environ.get(
"EXTERNAL_PROTOCOL", os.environ.get("GATEWAY_PROTOCOL", None)
)
ip = os.environ.get("GATEWAY_IP")
extra_scripts = os.environ.get("GATEWAY_EXTRA_SCRIPTS")
expire_seconds = int(
os.environ.get("GATEWAY_EXPIRE_SECONDS", os.environ.get("GATEWAY_TTL", "3600"))
)
enable_annotations = os.environ.get("GATEWAY_ENABLE_ANNOTATIONS", "").lower() in [
"true",
"1",
]
enable_backed_mode = os.environ.get("GATEWAY_ENABLE_BACKED_MODE", "").lower() in [
"true",
"1",
]
log_level = logging.getLevelName(os.environ.get("GATEWAY_LOG_LEVEL", "INFO"))
env_vars = {
"CELLXGENE_LOCATION": cellxgene_location,
}
proxy_fix_for = int(os.environ.get("PROXY_FIX_FOR", "0"))
proxy_fix_proto = int(os.environ.get("PROXY_FIX_PROTO", "0"))
proxy_fix_host = int(os.environ.get("PROXY_FIX_HOST", "0"))
proxy_fix_port = int(os.environ.get("PROXY_FIX_PORT", "0"))
proxy_fix_prefix = int(os.environ.get("PROXY_FIX_PREFIX", "0"))
optional_env_vars = {
"EXTERNAL_HOST": external_host,
"EXTERNAL_PROTOCOL": external_protocol,
"GATEWAY_IP": ip,
"GATEWAY_PORT": gateway_port,
"GATEWAY_EXTRA_SCRIPTS": extra_scripts,
"GATEWAY_EXPIRE_SECONDS": expire_seconds,
"GATEWAY_ENABLE_ANNOTATIONS": enable_annotations,
"GATEWAY_ENABLE_BACKED_MODE": enable_backed_mode,
"GATEWAY_LOG_LEVEL": log_level,
"CELLXGENE_ARGS": cellxgene_args,
"CELLXGENE_DATA": cellxgene_data,
"PROXY_FIX_FOR": proxy_fix_for,
"PROXY_FIX_PROTO": proxy_fix_proto,
"PROXY_FIX_HOST": proxy_fix_host,
"PROXY_FIX_PORT": proxy_fix_port,
"PROXY_FIX_PREFIX": proxy_fix_prefix,
}
def validate():
if not all(env_vars.values()):
raise ValueError(
f"""
Please ensure that environment variables are set correctly.
The ones with None below are missing and need to be set.
{env_vars}
Set them at the terminal before running the gateway.
An example is:
export CELLXGENE_LOCATION=~/anaconda/envs/cellxgene-dev/bin/cellxgene
export CELLXGENE_DATA=../cellxgene_data
"""
)
else:
logging.getLogger("cellxgene_gateway").info(
f"Got required env: {env_vars}",
)
logging.getLogger("cellxgene_gateway").info(
f"Got optional env: {optional_env_vars}"
)