From 494a13e82fcc602dad9565eb7bac98f70c0da988 Mon Sep 17 00:00:00 2001
From: Julian Knauer <jpk@goatpr0n.de>
Date: Tue, 1 Dec 2020 08:50:02 +0100
Subject: [PATCH] Initial commit

---
 README.md        | 28 +++++++++++++++++
 gl2gb.py         | 78 ++++++++++++++++++++++++++++++++++++++++++++++++
 requirements.txt |  3 ++
 3 files changed, 109 insertions(+)
 create mode 100644 README.md
 create mode 100644 gl2gb.py
 create mode 100644 requirements.txt

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..2252ab0
--- /dev/null
+++ b/README.md
@@ -0,0 +1,28 @@
+# GitLab to GitBlit Migration
+
+## Install
+
+Install requirements globally (requires root): 
+
+    python -m pip install -r requirements.txt
+
+Install requirements for your user:
+
+    python -m pip install --user -r requirements.txt
+
+
+## Configure
+
+Modify the variables to your needs:
+
+  * GITLAB_HOST = 'https://gitlab.com'
+  * GITLAB_TOKEN = 'PersonalAccessToken_api'
+  * GITBLIT_HOST = 'gitblit'  # Change: Gitblit host address
+  * GITBLIT_PORT = 29419  # Change: Gitblit ssh port
+  * GITBLIT_USER = 'user'
+  * GITBLIT_DIR = '/'  # or 'project_name/' or f'~{GITBLIT_USER}' for private
+
+
+## Run
+
+    python gl2gb.py
diff --git a/gl2gb.py b/gl2gb.py
new file mode 100644
index 0000000..625cbc2
--- /dev/null
+++ b/gl2gb.py
@@ -0,0 +1,78 @@
+#!/usr/bin/env python
+
+import time
+import os
+from subprocess import run, DEVNULL
+import tarfile
+import gitlab
+import paramiko
+from rich.progress import Progress
+
+progress = Progress(transient=True)
+progress.start()
+
+ssh = paramiko.SSHClient()
+ssh.load_system_host_keys()
+
+# TODO: Change the next five lines to match your needs.
+GITLAB_HOST = 'https://gitlab.com'
+GITLAB_TOKEN = 'PersonalAccessToken_api'
+GITBLIT_HOST = 'gitblit'  # Change: Gitblit host address
+GITBLIT_PORT = 29419  # Change: Gitblit ssh port
+GITBLIT_USER = 'user'
+GITBLIT_DIR = '/'  # or 'project_name/' or f'~{GITBLIT_USER}' for private
+
+# No changes needed
+GITBLIT_URI = f'ssh://{GITBLIT_USER}@{GITBLIT_HOST}:{GITBLIT_PORT}'
+
+gl = gitlab.Gitlab(GITLAB_HOST, private_token=GITLAB_TOKEN)
+ssh.connect(GITBLIT_HOST, port=GITBLIT_PORT)
+
+progress.log('Fetching project list...')
+for project in progress.track(gl.projects.list(all=True)):
+    if os.path.exists(f'repos/{project.path}.done'):
+        progress.log(f'{project.name}: Already exported and cloned')
+        continue
+
+    progress.log(f'{project.name}: Creating export...')
+    export = project.exports.create()
+    export.refresh()
+    while export.export_status != 'finished':
+        time.sleep(0.25)
+        export.refresh()
+
+    progress.log(f'{project.name}: Downloading export...')
+    with open(f'exports/{project.path}.tgz', 'wb') as f:
+        export.download(streamed=True, action=f.write)
+
+    # progress.log(f'Preparing {project.name} for re-import')
+    with tarfile.open(f'exports/{project.path}.tgz', 'r:gz') as t:
+        progress.log(f'{project.name}: Extracting ./project.bundle...')
+        try:
+            t.extract('./project.bundle')
+        except KeyError:
+            continue
+
+        progress.log(f'{project.name}: Cloning into bare repository...')
+        ret = run(['/usr/bin/git', 'clone', '--mirror', './project.bundle',
+                   f'repos/{project.path}'],
+                  stderr=DEVNULL, stdout=DEVNULL)
+
+        progress.log(f'{project.name}: Creating new repository...')
+        ssh.exec_command(f'gb repos new {GITBLIT_DIR}/{project.path}')
+
+        progress.log(f'{project.name}: Setting remote...')
+        ret = run(['/usr/bin/git', '--git-dir', f'repos/{project.path}',
+                   'remote', 'set-url', 'origin',
+                   f'{GITBLIT_URI}/{GITBLIT_DIR}/{project.path}'],
+                  stderr=DEVNULL, stdout=DEVNULL)
+
+        progress.log(f'{project.name}: Pushing local repository to remote...')
+        ret = run(['/usr/bin/git', '--git-dir', f'repos/{project.path}',
+                   'push'],
+                  stderr=DEVNULL, stdout=DEVNULL)
+
+        os.remove('./project.bundle')
+        os.rename(f'repos/{project.path}', f'repos/{project.path}.done')
+
+progress.stop()
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..7a8aed8
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+paramiko==2.7.2
+python-gitlab==2.5.0
+rich==9.2.0