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slip.py
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slip.py
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#!python3
""" slip.py - Surrogate Launching and Integration Platform python driver
To run:
$ python3 slip.py run <MODELID>
@author: Cade Brown <[email protected]>
"""
import os
import sys
import json
# for 'with' blocks
import contextlib
# SLIP directory (should be where 'slip.py' is)
# variables exposed
SLIP_DIR = os.path.dirname(os.path.realpath(__file__))
VARS = {
'SLIP_DIR': SLIP_DIR,
}
class Model():
# create from JSON
def __init__(self, jso):
self.jso = jso
def __repr__(self) -> str:
return f"slip.Model({json.dumps(self.jso, indent=4)})"
def __str__(self) -> str:
return f"<slip.Model {self.jso['id']!r}>"
# return directory where the model should be
def getdir(self):
return f"{SLIP_DIR}/cache/{self.jso['id']}"
def clone(self):
gd = self.getdir()
if os.path.exists(gd):
return gd
slog(f"CLONE {self.jso['id']} ...")
# try and clone it
try:
runsh(f"git clone {self.jso['clone']['git']['url']} {gd}")
except Exception as e:
# delete it, if a failure occured
try:
os.rmdir(gd)
except:
pass
raise e
return gd
def setup(self):
# ensure we have the data
gd = self.clone()
# check cache file to see if we are already set up
cachefile = f'{gd}/.setup.slip'
if os.path.exists(cachefile):
return gd
slog(f"SETUP {self.jso['id']} ...")
with pushd(gd):
# run setup script, while in the directory
runsh(self.jso['setup'])
# create an empty file to indicate that the model has been setup
with open(cachefile, 'w') as fp:
pass
return gd
def run(self):
# make sure we are set up
gd = self.setup()
slog(f"RUN {self.jso['id']} ...")
# run the commands
with pushd(gd):
# give dataset location
vs = {}
if self.jso['datasets']:
vs['DATASET'] = f"{SLIP_DIR}/cache/{self.jso['datasets'][0]}/data"
runsh(self.jso['run'], vs)
class Dataset():
# create from JSON
def __init__(self, jso):
self.jso = jso
def __repr__(self) -> str:
return f"slip.Dataset({json.dumps(self.jso, indent=4)})"
def __str__(self) -> str:
return f"<slip.Dataset {self.jso['id']!r}>"
# return directory where the model should be
def getdir(self):
return f"{SLIP_DIR}/cache/{self.jso['id']}"
def download(self):
gd = self.getdir()
if os.path.exists(gd):
return gd
slog(f"DOWNLOAD {self.jso['id']} ...")
# try and clone it
try:
DL = self.jso['download']
if 'git' in DL:
runsh(f"git clone {DL['git']['url']} {gd}")
# now, run steps to intiialize it
with pushd(gd):
runsh(DL['git']['steps'])
elif 'shell' in DL:
# just run the shell script, period
os.makedirs(gd, exist_ok=True)
with pushd(gd):
runsh(DL['shell'])
else:
raise Exception("Unknown download type! (had no 'git' or 'shell' keys)")
except Exception as e:
# delete it, if a failure occured
try:
os.rmdir(gd)
except:
pass
raise e
return gd
# slip log function
def slog(msg, pfx='slip>'):
print(pfx, msg)
# pushes directory and automatically pops it
# NOTE: use in 'with' block
@contextlib.contextmanager
def pushd(dir):
prevdir = os.getcwd()
os.chdir(dir)
try:
yield
finally:
os.chdir(prevdir)
def varrepl(s, vs={}):
""" replace variables in string """
for k, v in { **VARS, **vs }.items():
s = s.replace(f"$[{k}]", v)
return s
# runs command(s)
def runsh(cmd, vs={}):
if isinstance(cmd, list):
# list of commands, so run them all
for c in cmd:
runsh(c, vs)
else:
# assume string command
slog(f"running: {cmd}")
cmd = varrepl(cmd, vs)
res = os.system(cmd)
if res != 0:
slog(f"command failed: {cmd} (in {os.getcwd()})")
raise Exception(f"command failed: {cmd}")
def main(argv):
# TODO: parse arguments
try:
assert argv[1] == 'run'
id = argv[2]
except:
slog("usage: python3 slip.py run <MODELID>")
exit(1)
try:
model = Model(json.load(open(f"{SLIP_DIR}/db/models/{id}.json")))
except:
slog(f"unknown model '{id}', try something in `./db/datasets` (for example, 'CloudMask-0')")
exit(1)
print (repr(model))
if model.jso['datasets']:
ds = Dataset(json.load(open(f"{SLIP_DIR}/db/datasets/{model.jso['datasets'][0]}.json")))
# download the dataset
ds.download()
# run the model, after the dataset has been downloaded
model.run()
if __name__ == '__main__':
main(sys.argv)
""" misc old useful code:
# pushes directory and automatically pops it
@contextlib.contextmanager
def pushd(new_dir):
previous_dir = os.getcwd()
os.chdir(new_dir)
try:
yield
finally:
os.chdir(previous_dir)
"git": {
"url": "https://github.com/stfc-sciml/sciml-bench.git",
"steps": [
"pip3 install -r requirements.txt",
"python3 -msciml_bench.core.command download slstr_cloud_ds1 --dataset_root_dir ./data"
]
}
def dataset_setup(dataset):
assert 'git' in dataset['setup']
# our installation instructions
# TODO: make other than GIT
inst = dataset['setup']['git']
run('mkdir -p tmp')
with pushd(f"tmp"):
dirname = dataset['name']
# clone it if needed
if not os.path.exists(dirname):
run(f"git clone {inst['url']} {dirname}")
with pushd(dirname):
run(f"git pull")
# now, run commands
for cmd in inst['steps']:
run(cmd)
# our installation instructions
"""