Switch to sha-256 git repo and use git tools again

The reference to the object might be already deleted by when the
request is failing. plus setting deleted=0 is rejected by the API.
So try with deleted=1 if and only if the previous access failed.

lib/git.py

@@ -4,7 +4,6 @@ import os
 import pathlib
 import subprocess
 
-import pygit2
 import requests
 
 from lib.binary import BINARY
@@ -20,11 +19,6 @@ class Git:
         self.committer = committer
         self.committer_email = committer_email
 
-        self.repo = None
-
-    def is_open(self):
-        return self.repo is not None
-
     def exists(self):
         """Check if the path is a valid git repository"""
         return (self.path / ".git").exists()
@@ -35,35 +29,60 @@ class Git:
         self.open()
 
     def open(self):
-        # Convert the path to string, to avoid some limitations in
-        # older pygit2
-        self.repo = pygit2.init_repository(str(self.path))
+        subprocess.run(
+            ['git', 'init', '--object-format=sha256', '-b', 'factory'],
+            cwd=self.path,
+            check=True,
+        )
 
     def is_dirty(self):
         """Check if there is something to commit"""
-        assert self.is_open()
-
-        return self.repo.status()
+        status_str = subprocess.run(
+            ['git', 'status', '--porcelain=2'],
+            cwd=self.path,
+            stdout=subprocess.PIPE,
+            check=True
+        ).stdout.decode('utf-8')
+        return len(list(filter(None, status_str.split('\n')))) > 0
 
     def branches(self):
-        return list(self.repo.branches)
+        br=subprocess.run(
+            ['git', 'for-each-ref', '--format=%(refname:short)', 'refs/heads/'],
+            cwd=self.path,
+            check=True,
+            stdout=subprocess.PIPE
+        ).stdout.decode('utf-8').split()
+        if len(br) == 0:
+            br.append('factory') # unborn branch?
+        return br
 
-    def branch(self, branch, commit=None):
-        if not commit:
-            commit = self.repo.head
-        else:
-            commit = self.repo.get(commit)
-        self.repo.branches.local.create(branch, commit)
+    def branch(self, branch, commit='HEAD'):
+        commit = subprocess.run(
+            ['git', 'rev-parse', '--verify', '--end-of-options', commit + '^{commit}'],
+            cwd=self.path,
+            check=True,
+            stdout=subprocess.PIPE
+        ).stdout.decode('utf-8').strip()
+        return subprocess.run(['git', 'branch', branch, commit], check=True)
 
     def checkout(self, branch):
         """Checkout into the branch HEAD"""
         new_branch = False
-        ref = f"refs/heads/{branch}"
         if branch not in self.branches():
-            self.repo.references["HEAD"].set_target(ref)
+            subprocess.run(
+                ['git', 'branch', '-q', branch, 'HEAD'],
+                cwd=self.path,
+                check=True
+            )
             new_branch = True
         else:
-            self.repo.checkout(ref)
+            ref = f"refs/heads/{branch}"
+            if (self.path/'.git'/ref).exists():
+                subprocess.run(
+                    ['git', 'checkout', '-q', branch],
+                    cwd=self.path,
+                    check=True
+                )
         return new_branch
 
     def commit(
@@ -87,30 +106,62 @@ class Git:
             committer_time = committer_time if committer_time else user_time
 
         if self.is_dirty():
-            self.repo.index.add_all()
+            subprocess.run(
+                ["git", "add", "--all", "."],
+                cwd=self.path,
+                check=True,
+            )
 
-        self.repo.index.write()
-        author = pygit2.Signature(user, user_email, int(user_time.timestamp()))
-        committer = pygit2.Signature(
-            committer, committer_email, int(committer_time.timestamp())
+        tree_id = subprocess.run(
+            ['git', 'write-tree'],
+            cwd=self.path,
+            check=True,
+            stdout=subprocess.PIPE
+        ).stdout.decode('utf-8').strip()
+
+        parent_array = []
+        if isinstance(parents, list):
+            for parent in filter(None, parents):
+                parent_array = parent_array + ['-p', parent]
+        elif isinstance(parents, str):
+            parents_array = ['-p', parents]
+
+        commit_id = subprocess.run(
+            ['git', 'commit-tree'] + parent_array + [tree_id],
+            cwd=self.path,
+            env={
+                "GIT_AUTHOR_NAME": user,
+                "GIT_AUTHOR_EMAIL": user_email,
+                "GIT_AUTHOR_DATE": f"{int(user_time.timestamp())} +0000",
+                "GIT_COMMITTER_NAME": committer,
+                "GIT_COMMITTER_EMAIL": committer_email,
+                "GIT_COMMITTER_DATE": f"{int(committer_time.timestamp())} +0000",
+            },
+            input=message.encode('utf-8'),
+            check=True,
+            stdout=subprocess.PIPE
+        ).stdout.decode('utf-8').rstrip()
+        subprocess.run(
+            ['git', 'reset', '--soft', commit_id],
+            cwd=self.path,
+            check=True,
         )
+        return commit_id
 
-        tree = self.repo.index.write_tree()
-        return self.repo.create_commit(
-            "HEAD", author, committer, message, tree, parents
-        )
-
-    def last_commit(self):
-        try:
-            return self.repo.head.target
-        except:
-            return None
-
-    def branch_head(self, branch):
-        return self.repo.references["refs/heads/" + branch].target
+    def branch_head(self, branch='HEAD'):
+        return subprocess.run(
+            ['git', 'rev-parse', '--verify', '--end-of-options', branch],
+            cwd=self.path,
+            check=True,
+            stdout=subprocess.PIPE
+        ).stdout.decode('utf-8').strip()
 
     def set_branch_head(self, branch, commit):
-        self.repo.references["refs/heads/" + branch].set_target(commit)
+        return subprocess.run(
+            ['git', 'branch', '-f', branch, commit],
+            cwd=self.path,
+            check=True,
+        )
 
     def gc(self):
         logging.debug(f"Garbage recollect and repackage {self.path}")
@@ -121,17 +172,21 @@ class Git:
             stderr=subprocess.STDOUT,
         )
 
-    def clean(self):
-        for path, _ in self.repo.status().items():
-            logging.debug(f"Cleaning {path}")
-            try:
-                (self.path / path).unlink()
-                self.repo.index.remove(path)
-            except Exception as e:
-                logging.warning(f"Error removing file {path}: {e}")
+#    def clean(self):
+#        for path, _ in self.repo.status().items():
+#            logging.debug(f"Cleaning {path}")
+#            try:
+#                (self.path / path).unlink()
+#                self.repo.index.remove(path)
+#            except Exception as e:
+#                logging.warning(f"Error removing file {path}: {e}")
 
     def add(self, filename):
-        self.repo.index.add(filename)
+        subprocess.run(
+            ['git', 'add', filename],
+            cwd=self.path,
+            check=True,
+        )
 
     def add_default_lfs_gitattributes(self, force=False):
         if not (self.path / ".gitattributes").exists() or force:
@@ -185,9 +240,11 @@ class Git:
             return any(fnmatch.fnmatch(filename, line) for line in patterns)
 
     def remove(self, file: pathlib.Path):
-        self.repo.index.remove(file.name)
-        (self.path / file).unlink()
-
+        subprocess.run(
+            ['git', 'rm', '-q', '--ignore-unmatch', file.name],
+            cwd=self.path,
+            check=True,
+        )
         patterns = self.get_specific_lfs_gitattributes()
         if file.name in patterns:
             patterns.remove(file.name)
@@ -201,7 +258,7 @@ class Git:
             logging.warning("Not adding a remote due to missing $GITEA_TOKEN")
             return
 
-        url = f"https://gitea.opensuse.org/api/v1/org/{org_name}/repos"
+        url = f"https://src.opensuse.org/api/v1/org/{org_name}/repos"
         response = requests.post(
             url,
             data={"name": repo_name},
@@ -212,16 +269,23 @@ class Git:
         # 201 Created
         if response.status_code not in (201, 409):
             print(response.data)
-        url = f"gitea@gitea.opensuse.org:{org_name}/{repo_name}.git"
-        self.repo.remotes.create("origin", url)
+        url = f"gitea@src.opensuse.org:{org_name}/{repo_name}.git"
+        subprocess.run(
+            ['git', 'remote', 'add', 'origin', url],
+            cwd=self.path,
+            check=True,
+        )
 
-    def push(self):
-        remo = self.repo.remotes["origin"]
+    def push(self, force=False):
+        cmd = ['git', 'push'];
+        if force:
+            cmd.append('-f')
+        cmd.append('origin')
+        cmd.append('refs/heads/factory');
+        cmd.append('refs/heads/devel');
+        subprocess.run(
+            cmd,
+            cwd=self.path,
+            check=True,
+        )
 
-        keypair = pygit2.KeypairFromAgent("gitea")
-        callbacks = pygit2.RemoteCallbacks(credentials=keypair)
-
-        refspecs = ["refs/heads/factory"]
-        if "refs/heads/devel" in self.repo.references:
-            refspecs.append("refs/heads/devel")
-        remo.push(refspecs, callbacks=callbacks)

lib/git_exporter.py

@@ -86,7 +86,7 @@ class GitExporter:
             logging.debug(f"Committing {flat}")
             self.commit_flat(flat, branch_state)
 
-        self.git.push()
+        self.git.push(force=True)
 
     def run_gc(self):
         self.gc_cnt = self.gc_interval

lib/importer.py

@@ -1,5 +1,5 @@
-import concurrent.futures
 import logging
+import pathlib
 import xml.etree.ElementTree as ET
 
 from lib.db import DB
@@ -31,6 +31,7 @@ class Importer:
         self.obs = OBS(api_url)
         assert project == "openSUSE:Factory"
         self.refreshed_packages = set()
+        self.gone_packages_set = None
 
     def import_request(self, number):
         self.obs.request(number).import_into_db(self.db)
@@ -105,7 +106,7 @@ class Importer:
         with self.db.cursor() as cur:
             cur.execute(
                 """SELECT * FROM revisions WHERE id IN
-                            (SELECT revision_id from linked_revs WHERE linked_id=%s) 
+                            (SELECT revision_id from linked_revs WHERE linked_id=%s)
                             AND commit_time <= %s ORDER BY commit_time""",
                 (prev.dbid, rev.commit_time),
             )
@@ -138,7 +139,7 @@ class Importer:
             fake_rev = linked.rev + rev.rev / 1000.0
             comment = f"Updating link to change in {rev.project}/{rev.package} revision {int(rev.rev)}"
             cur.execute(
-                """INSERT INTO revisions (project,package,rev,unexpanded_srcmd5, 
+                """INSERT INTO revisions (project,package,rev,unexpanded_srcmd5,
                             commit_time, userid, comment, api_url) VALUES(%s,%s,%s,%s,%s,%s,%s,%s) RETURNING id""",
                 (
                     linked.project,
@@ -161,10 +162,12 @@ class Importer:
                 (rev.dbid, linked.dbid),
             )
 
-    def revisions_without_files(self):
+    def revisions_without_files(self, package):
+        logging.debug(f"revisions_without_files({package})")
         with self.db.cursor() as cur:
             cur.execute(
-                "SELECT * FROM revisions WHERE broken=FALSE AND expanded_srcmd5 IS NULL"
+                "SELECT * FROM revisions WHERE package=%s AND broken=FALSE AND expanded_srcmd5 IS NULL",
+                (package, )
             )
             return [DBRevision(self.db, row) for row in cur.fetchall()]
 
@@ -178,11 +181,11 @@ class Importer:
             linked_rev = cur.fetchone()
         if linked_rev:
             linked_rev = linked_rev[0]
-        list = self.obs.list(
+        obs_dir_list = self.obs.list(
             rev.project, rev.package, rev.unexpanded_srcmd5, linked_rev
         )
-        if list:
-            rev.import_dir_list(list)
+        if obs_dir_list:
+            rev.import_dir_list(obs_dir_list)
             md5 = rev.calculate_files_hash()
             with self.db.cursor() as cur:
                 cur.execute(
@@ -196,53 +199,43 @@ class Importer:
         self.find_linked_revs()
 
         self.find_fake_revisions()
-        with concurrent.futures.ThreadPoolExecutor(max_workers=8) as executor:
-            fs = [
-                executor.submit(import_rev, self, rev)
-                for rev in self.revisions_without_files()
-            ]
-        concurrent.futures.wait(fs)
+        for package in self.packages:
+            for rev in self.revisions_without_files(package):
+                print(f"rev {rev} is without files")
+                self.import_rev(rev)
 
     def refresh_package(self, project, package):
         key = f"{project}/{package}"
         if key in self.refreshed_packages:
             # refreshing once is good enough
             return
+        if self.package_gone(key):
+            return
         logging.debug(f"Refresh {project}/{package}")
         self.refreshed_packages.add(key)
         self.update_db_package(project, package)
         self.fetch_all_linked_packages(project, package)
 
     def import_into_db(self):
+        for package in self.packages:
+            refresh_package(self, self.project, package)
 
-        with concurrent.futures.ThreadPoolExecutor(max_workers=8) as executor:
-            fs = [
-                executor.submit(refresh_package, self, self.project, package)
-                for package in self.packages
-            ]
-            concurrent.futures.wait(fs)
+        self.db.conn.commit()
 
-            self.db.conn.commit()
+        for number in DBRevision.requests_to_fetch(self.db):
+            self.import_request(number)
 
-            fs = [
-                executor.submit(import_request, self, number)
-                for number in DBRevision.requests_to_fetch(self.db)
-            ]
-            concurrent.futures.wait(fs)
+        self.db.conn.commit()
 
-            self.db.conn.commit()
+        with self.db.cursor() as cur:
+            cur.execute(
+                """SELECT DISTINCT source_project,source_package FROM requests
+                        WHERE id IN (SELECT request_id FROM revisions WHERE project=%s and package = ANY(%s));""",
+                (self.project, self.packages),
+            )
+            for project, package in cur.fetchall():
+                self.refresh_package(project, package)
 
-            with self.db.cursor() as cur:
-                cur.execute(
-                    """SELECT DISTINCT source_project,source_package FROM requests 
-                            WHERE id IN (SELECT request_id FROM revisions WHERE project=%s and package = ANY(%s));""",
-                    (self.project, self.packages),
-                )
-                fs = [
-                    executor.submit(refresh_package, self, project, package)
-                    for project, package in cur.fetchall()
-                ]
-                concurrent.futures.wait(fs)
         self.db.conn.commit()
 
         missing_users = User.missing_users(self.db)
@@ -254,3 +247,11 @@ class Importer:
 
         self.fill_file_lists()
         self.db.conn.commit()
+
+    def package_gone(self, key):
+        if not self.gone_packages_set:
+            self.gone_packages_set = set()
+            with open(pathlib.Path(__file__).parent.parent / "gone-packages.txt") as f:
+                for line in f.readlines():
+                    self.gone_packages_set.add(line.strip())
+        return key in self.gone_packages_set

lib/lfs_oid.py

@@ -68,7 +68,7 @@ class LFSOid:
             row = cur.fetchone()
             lfs_oid_id = row[0]
             cur.execute(
-                """INSERT INTO lfs_oid_in_package (package,filename,lfs_oid_id) 
+                """INSERT INTO lfs_oid_in_package (package,filename,lfs_oid_id)
                         VALUES (%s,%s,%s)""",
                 (package, filename, lfs_oid_id),
             )
@@ -83,7 +83,7 @@ class LFSOid:
             self.register()
 
     def check(self):
-        url = f"http://gitea.opensuse.org:9999/check/{self.sha256}/{self.size}"
+        url = f"http://localhost:9999/check/{self.sha256}/{self.size}"
         response = requests.get(
             url,
             timeout=10,
@@ -127,12 +127,13 @@ class LFSOid:
             "size": self.size,
         }
 
-        url = "http://gitea.opensuse.org:9999/register"
+        url = "http://localhost:9999/register"
         response = requests.post(
             url,
             json=data,
             timeout=10,
         )
+        response.raise_for_status()
         logging.info(f"Register LFS returned {response.status_code}")
 
 
@@ -167,7 +168,7 @@ if __name__ == "__main__":
         cur.execute(
             """
             CREATE TEMPORARY TABLE lfs_oid_in_revision (
-                revision_id INTEGER, 
+                revision_id INTEGER,
                 lfs_oid_id  INTEGER NOT NULL,
                 name        VARCHAR(255) NOT NULL
             )

lib/obs.py

@@ -148,12 +148,28 @@ class OBS:
         ]
 
     def _download(self, project, package, name, revision):
+        # the object might be deleted but we can only pass deleted=1
+        # if it is actually deleted
+        deleted = 0
+        while deleted < 2:
+            url = osc.core.makeurl(
+                self.url,
+                ["source", project, package, urllib.parse.quote(name)],
+                {"rev": revision, "expand": 1, "deleted": deleted if deleted else ()},
+            )
+            try:
+                osc.core.http_request("HEAD", url)
+                break
+            except Exception:
+                pass
+            deleted += 1
+
         url = osc.core.makeurl(
-            self.url,
-            ["source", project, package, urllib.parse.quote(name)],
-            {"rev": revision, "expand": 1},
-        )
-        return osc.core.http_GET(url)
+                self.url,
+                ["source", project, package, urllib.parse.quote(name)],
+                {"rev": revision, "expand": 1, "deleted": 1 if deleted else ()},
+            )
+        return osc.core.http_request("GET", url)
 
     def download(
         self,

lib/proxy_sha256.py

@@ -7,8 +7,6 @@ except:
     print("Install python3-python-magic, not python3-magic")
     raise
 
-import requests
-
 from lib.db import DB
 from lib.lfs_oid import LFSOid
 from lib.obs import OBS

lib/tree_builder.py

@@ -114,7 +114,7 @@ class TreeBuilder:
                 candidates.append(node)
             if node.merged_into:
                 # we can't have candidates that are crossing previous merges
-                # see https://gitea.opensuse.org/importers/git-importer/issues/14
+                # see https://src.opensuse.org/importers/git-importer/issues/14
                 candidates = []
             node = node.parent
         if candidates: