forked from adamm/git-importer
174 lines
6.2 KiB
Python
174 lines
6.2 KiB
Python
import logging
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import os
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from pathlib import Path
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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.obs import OBS
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from lib.proxy_sha256 import ProxySHA256, md5
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from lib.tree_builder import TreeBuilder
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class GitExporter:
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def __init__(self, api_url, project, package, repodir):
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self.obs = OBS()
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self.project = project
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self.package = package
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# TODO: Store the api url in the revision
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self.obs.change_url(api_url)
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self.proxy_sha256 = ProxySHA256(self.obs, enabled=True)
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self.git = Git(
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repodir,
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committer="Git OBS Bridge",
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committer_email="obsbridge@suse.de",
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).create()
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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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def download(self, revision):
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obs_files = self.obs.files(revision.project, revision.package, revision.srcmd5)
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git_files = {
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(f.name, f.stat().st_size, md5(f))
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for f in self.git.path.iterdir()
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if f.is_file() and f.name not in (".gitattributes")
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}
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# Overwrite ".gitattributes" with the
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self.git.add_default_lfs_gitattributes(force=True)
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# Download each file in OBS if it is not a binary (or large)
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# file
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for (name, size, file_md5) in obs_files:
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# this file creates easily 100k commits and is just useless data :(
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# unfortunately it's stored in the same meta package as the project config
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if revision.package == "_project" and name == "_staging_workflow":
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continue
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# have such files been detected as text mimetype before?
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is_text = self.proxy_sha256.is_text(name)
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if not is_text and is_binary_or_large(name, size):
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file_sha256 = self.proxy_sha256.get_or_put(
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revision.project,
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revision.package,
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name,
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revision.srcmd5,
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file_md5,
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size,
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)
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self.git.add_lfs(name, file_sha256["sha256"], size)
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else:
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if (name, size, file_md5) not in git_files:
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logging.debug(f"Download {name}")
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self.obs.download(
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revision.project,
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revision.package,
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name,
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revision.srcmd5,
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self.git.path,
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file_md5=file_md5,
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)
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# Validate the MD5 of the downloaded file
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if md5(self.git.path / name) != file_md5:
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raise Exception(f"Download error in {name}")
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self.git.add(name)
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# Remove extra files
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obs_names = {n for (n, _, _) in obs_files}
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git_names = {n for (n, _, _) in git_files}
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for name in git_names - obs_names:
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logging.debug(f"Remove {name}")
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self.git.remove(name)
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def set_gc_interval(self, gc):
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self.gc_interval = gc
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def export_as_git(self):
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db = DB()
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tree = TreeBuilder(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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state_data = dict()
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if os.path.exists(self.state_file):
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with open(self.state_file, "r") as f:
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state_data = yaml.safe_load(f)
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if type(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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gc_cnt = self.gc_interval
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if len(left_to_commit) > 0:
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self.git.gc()
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for flat in left_to_commit:
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gc_cnt -= 1
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if gc_cnt <= 0 and self.gc_interval:
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self.git.gc()
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gc_cnt = self.gc_interval
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logging.debug(f"Committing {flat}")
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self.commit_flat(flat, branch_state)
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def limit_download(self, file: Path):
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return file.suffix in (".spec", ".changes")
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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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parents.append(flat.parent1.git_commit)
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if flat.parent2:
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parents.append(flat.parent2.git_commit)
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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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if not self.limit_download(file):
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continue
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self.git.remove(file)
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for file, md5 in to_download:
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if not self.limit_download(file):
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continue
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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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file_md5=md5,
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)
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self.git.add(file)
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# Overwrite ".gitattributes" with the
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self.git.add_default_lfs_gitattributes(force=True)
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commit = self.git.commit(
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f"OBS User {flat.commit.userid}",
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"null@suse.de",
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flat.commit.commit_time,
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# TODO: Normalize better the commit message
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f"{flat.commit.comment}\n\n{flat.commit}",
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allow_empty=True,
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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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