forked from importers/git-importer
177 lines
6.1 KiB
Python
177 lines
6.1 KiB
Python
import logging
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import os
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import yaml
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from lib.binary import is_binary_or_large
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from lib.db import DB
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from lib.git import Git
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from lib.lfs_oid import LFSOid
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from lib.obs import OBS
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from lib.proxy_sha256 import ProxySHA256
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from lib.tree_builder import TreeBuilder
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from lib.user import User
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class GitExporter:
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def __init__(self, api_url, project, package, repodir, cachedir):
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self.obs = OBS(api_url)
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self.project = project
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self.package = package
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self.db = DB()
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self.proxy_sha256 = ProxySHA256(self.obs, self.db)
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self.git = Git(
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repodir / package,
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committer="Git OBS Bridge",
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committer_email="obsbridge@suse.de",
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)
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if self.git.exists():
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self.git.open()
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else:
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self.git.create()
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self.git.add_gitea_remote(package)
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self.state_file = os.path.join(self.git.path, ".git", "_flat_state.yaml")
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self.gc_interval = 200
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self.cachedir = cachedir
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def set_gc_interval(self, gc):
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self.gc_interval = gc
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def check_repo_state(self, flats, branch_state):
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state_data = dict()
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if os.path.exists(self.state_file):
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with open(self.state_file) as f:
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state_data = yaml.safe_load(f)
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if not isinstance(state_data, dict):
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state_data = {}
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left_to_commit = []
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for flat in reversed(flats):
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found_state = False
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for branch in ["factory", "devel"]:
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if flat.commit.dbid == state_data.get(branch):
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branch_state[branch] = flat.commit
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flat.commit.git_commit = self.git.branch_head(branch)
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logging.debug(
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f"Found {self.git.path}'s {branch} branch in state {flat}"
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)
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left_to_commit = []
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found_state = True
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if not found_state:
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left_to_commit.append(flat)
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return left_to_commit
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def export_as_git(self):
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if os.getenv("CHECK_ALL_LFS"):
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LFSOid.check_all(self.db, self.package)
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tree = TreeBuilder(self.db).build(self.project, self.package)
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flats = tree.as_flat_list()
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branch_state = {"factory": None, "devel": None}
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left_to_commit = self.check_repo_state(flats, branch_state)
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if not left_to_commit:
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return
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logging.info(f"Commiting into {self.git.path}")
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self.run_gc()
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users = dict()
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for flat in left_to_commit:
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if flat.commit.userid not in users:
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users[flat.commit.userid] = User.find(self.db, flat.commit.userid)
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flat.user = users[flat.commit.userid]
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self.gc_cnt -= 1
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if self.gc_cnt <= 0 and self.gc_interval:
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self.run_gc()
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logging.debug(f"Committing {flat}")
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self.commit_flat(flat, branch_state)
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self.git.push(force=True)
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def run_gc(self):
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self.gc_cnt = self.gc_interval
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self.git.gc()
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def is_lfs_file(self, package, filename, size):
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if not is_binary_or_large(filename, size):
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return False
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return not self.proxy_sha256.is_text(package, filename)
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def commit_file(self, flat, file, size, md5):
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# have such files been detected as text mimetype before?
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if self.is_lfs_file(flat.commit.package, file.name, size):
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file_sha256 = self.proxy_sha256.get_or_put(
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flat.commit.project,
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flat.commit.package,
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file.name,
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flat.commit.expanded_srcmd5,
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md5,
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size,
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)
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# as it's newly registered, it might be a text file now, so double check
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if not self.proxy_sha256.is_text(flat.commit.package, file.name):
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self.git.add_lfs(file.name, file_sha256, size)
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return
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self.commit_non_lfs_file(flat, file, md5)
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def commit_non_lfs_file(self, flat, file, md5):
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self.obs.change_url(flat.commit.api_url)
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self.obs.download(
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flat.commit.project,
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flat.commit.package,
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file.name,
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flat.commit.expanded_srcmd5,
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self.git.path,
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self.cachedir,
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file_md5=md5,
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)
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self.git.add(file)
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def branch_fits_parent1(self, flat, branch_state):
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if branch_state[flat.branch] is None:
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# everything fits nothing
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return True
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return flat.parent1 == branch_state[flat.branch]
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def commit_flat(self, flat, branch_state):
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parents = []
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self.git.checkout(flat.branch)
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if flat.parent1:
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if not self.branch_fits_parent1(flat, branch_state):
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logging.debug(f"Reset {flat.branch} onto {flat.parent1.short_string()}")
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assert flat.parent1.git_commit
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self.git.set_branch_head(flat.branch, flat.parent1.git_commit)
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self.git.checkout(flat.branch)
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parents.append(flat.parent1.git_commit)
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if flat.parent2:
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assert flat.parent2.git_commit
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parents.append(flat.parent2.git_commit)
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# create file if not existant
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self.git.add_default_lfs_gitattributes(force=False)
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self.git.add_default_gitignore()
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to_download, to_delete = flat.commit.calc_delta(branch_state[flat.branch])
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for file in to_delete:
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self.git.remove(file)
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for file, size, md5 in to_download:
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self.commit_file(flat, file, size, md5)
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commit = self.git.commit(
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flat.user.realname,
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flat.user.email,
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flat.commit.commit_time,
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flat.commit.git_commit_message(),
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parents=parents,
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)
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flat.commit.git_commit = commit
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branch_state[flat.branch] = flat.commit
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with open(self.state_file, "w") as f:
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data = {}
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for branch in ["factory", "devel"]:
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commit = branch_state[branch]
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if commit:
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data[branch] = commit.dbid
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yaml.dump(data, f)
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