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106 lines
3.2 KiB
Python
Executable File
106 lines
3.2 KiB
Python
Executable File
#!/usr/bin/env python3
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"""
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Generate the compile expansions file used by Evergreen as part of the push/release process.
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Invoke by specifying an output file.
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$ python generate_compile_expansions.py --out compile_expansions.yml
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"""
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import argparse
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import os
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import shlex
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import sys
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import yaml
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VERSION_JSON = "version.json"
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def generate_expansions():
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"""Entry point for the script.
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This calls functions to generate version and scons cache expansions and
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writes them to a file.
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"""
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args = parse_args()
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expansions = {}
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expansions.update(generate_scons_cache_expansions())
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with open(args.out, "w") as out:
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print("saving compile expansions to {0}: ({1})".format(args.out, expansions))
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yaml.safe_dump(expansions, out, default_flow_style=False)
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def parse_args():
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"""Parse program arguments."""
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parser = argparse.ArgumentParser()
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parser.add_argument("--out", required=True)
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return parser.parse_args()
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def generate_scons_cache_expansions():
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"""Generate scons cache expansions from some files and environment variables."""
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expansions = {}
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# Get the scons cache mode
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scons_cache_mode = os.getenv("SCONS_CACHE_MODE", "nolinked")
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# Get the host uuid
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if sys.platform.startswith("win"):
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system_id_path = r"c:\mongodb-build-system-id"
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else:
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system_id_path = "/etc/mongodb-build-system-id"
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if os.path.isfile(system_id_path):
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with open(system_id_path, "r") as fh:
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system_uuid = fh.readline().strip()
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# Set the scons shared cache setting
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# Global shared cache using EFS
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if os.getenv("SCONS_CACHE_SCOPE") == "shared":
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if sys.platform.startswith("win"):
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shared_mount_root = "X:\\"
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else:
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shared_mount_root = "/efs/scons"
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scons_cache_dir = os.getenv("SCONS_CACHE_DIR")
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if scons_cache_dir:
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default_cache_path = os.path.join(
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shared_mount_root, system_uuid, "per_variant_caches", scons_cache_dir, "scons-cache"
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)
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else:
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default_cache_path = os.path.join(shared_mount_root, system_uuid, "scons-cache")
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expansions["scons_cache_path"] = default_cache_path
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expansions["scons_cache_args"] = (
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"--cache=nolinked --cache-signature-mode=validate --cache-dir={0} --cache-show".format(
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shlex.quote(default_cache_path)
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)
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)
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# Local shared cache - host-based
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elif os.getenv("SCONS_CACHE_SCOPE") == "local":
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if sys.platform.startswith("win"):
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default_cache_path_base = r"z:\data\scons-cache"
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else:
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default_cache_path_base = "/data/scons-cache"
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default_cache_path = os.path.join(default_cache_path_base, system_uuid)
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expansions["scons_cache_path"] = default_cache_path
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expansions["scons_cache_args"] = (
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"--cache={0} --cache-signature-mode=validate --cache-dir={1} --cache-show".format(
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scons_cache_mode, shlex.quote(default_cache_path)
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)
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)
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# No cache
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else:
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# Anything else is 'none'
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print("No cache used")
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return expansions
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if __name__ == "__main__":
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generate_expansions()
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