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https://github.com/ClickHouse/ClickHouse.git
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113 lines
3.8 KiB
Python
113 lines
3.8 KiB
Python
import dataclasses
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import hashlib
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import os
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from hashlib import md5
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from pathlib import Path
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from typing import List
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from praktika import Job
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from praktika.docker import Docker
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from praktika.settings import Settings
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from praktika.utils import Utils
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class Digest:
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def __init__(self):
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self.digest_cache = {}
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@staticmethod
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def _hash_digest_config(digest_config: Job.CacheDigestConfig) -> str:
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data_dict = dataclasses.asdict(digest_config)
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hash_obj = md5()
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hash_obj.update(str(data_dict).encode())
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hash_string = hash_obj.hexdigest()
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return hash_string
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def calc_job_digest(self, job_config: Job.Config):
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config = job_config.digest_config
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if not config:
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return "f" * Settings.CACHE_DIGEST_LEN
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cache_key = self._hash_digest_config(config)
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if cache_key in self.digest_cache:
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return self.digest_cache[cache_key]
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included_files = Utils.traverse_paths(
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job_config.digest_config.include_paths,
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job_config.digest_config.exclude_paths,
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sorted=True,
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)
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print(
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f"calc digest for job [{job_config.name}]: hash_key [{cache_key}], include [{len(included_files)}] files"
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)
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# Sort files to ensure consistent hash calculation
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included_files.sort()
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# Calculate MD5 hash
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res = ""
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if not included_files:
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res = "f" * Settings.CACHE_DIGEST_LEN
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print(f"NOTE: empty digest config [{config}] - return dummy digest")
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else:
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hash_md5 = hashlib.md5()
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for file_path in included_files:
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res = self._calc_file_digest(file_path, hash_md5)
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assert res
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self.digest_cache[cache_key] = res
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return res
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def calc_docker_digest(
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self,
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docker_config: Docker.Config,
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dependency_configs: List[Docker.Config],
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hash_md5=None,
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):
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"""
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:param hash_md5:
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:param dependency_configs: list of Docker.Config(s) that :param docker_config: depends on
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:param docker_config: Docker.Config to calculate digest for
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:return:
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"""
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print(f"Calculate digest for docker [{docker_config.name}]")
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paths = Utils.traverse_path(docker_config.path, sorted=True)
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if not hash_md5:
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hash_md5 = hashlib.md5()
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dependencies = []
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for dependency_name in docker_config.depends_on:
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for dependency_config in dependency_configs:
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if dependency_config.name == dependency_name:
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print(
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f"Add docker [{dependency_config.name}] as dependency for docker [{docker_config.name}] digest calculation"
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)
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dependencies.append(dependency_config)
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for dependency in dependencies:
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_ = self.calc_docker_digest(dependency, dependency_configs, hash_md5)
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for path in paths:
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_ = self._calc_file_digest(path, hash_md5=hash_md5)
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return hash_md5.hexdigest()[: Settings.CACHE_DIGEST_LEN]
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@staticmethod
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def _calc_file_digest(file_path, hash_md5):
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# Resolve file path if it's a symbolic link
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resolved_path = file_path
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if Path(file_path).is_symlink():
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resolved_path = os.path.realpath(file_path)
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if not Path(resolved_path).is_file():
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print(
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f"WARNING: No valid file resolved by link {file_path} -> {resolved_path} - skipping digest calculation"
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)
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return hash_md5.hexdigest()[: Settings.CACHE_DIGEST_LEN]
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with open(resolved_path, "rb") as f:
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for chunk in iter(lambda: f.read(4096), b""):
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hash_md5.update(chunk)
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return hash_md5.hexdigest()[: Settings.CACHE_DIGEST_LEN]
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