def capture_build_environment(self):
"""
Capture the environment for the build.
This uses spack.util.environment.get_host_environment_metadata to do so.
This is important because it's a unique identifier, along with the spec,
for a Build. It should look something like this:
{'host_os': 'ubuntu20.04',
'platform': 'linux',
'host_target': 'skylake',
'hostname': 'vanessa-ThinkPad-T490s',
'spack_version': '0.16.1-1455-52d5b55b65',
'kernel_version': '#73-Ubuntu SMP Mon Jan 18 17:25:17 UTC 2021'}
This is saved to a package install's metadata folder as
install_environment.json, and can be loaded by the monitor for uploading
data relevant to a later analysis.
"""
from spack.util.environment import get_host_environment_metadata
self.build_environment = get_host_environment_metadata()
keys = list(self.build_environment.keys())
# Allow to customize any of these values via the environment
for key in keys:
envar_name = "SPACKMON_%s" % key.upper()
envar = os.environ.get(envar_name)
if envar:
self.build_environment[key] = envar
def write_host_environment(self, spec):
"""The host environment is a json file with os, kernel, and spack
versioning. We use it in the case that an analysis later needs to
easily access this information.
"""
from spack.util.environment import get_host_environment_metadata
env_file = self.env_metadata_path(spec)
environ = get_host_environment_metadata()
with open(env_file, 'w') as fd:
sjson.dump(environ, fd)
