Gitlab to Gitea migration script. Moved to Github! https://github.com/h44z/gitlab_to_gitea
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import base64
import os
import time
import random
import string
import requests
import json
import dateutil.parser
import datetime
import re
import gitlab # pip install python-gitlab
import gitlab.v4.objects
import pygitea # pip install pygitea (https://github.com/h44z/pygitea)
SCRIPT_VERSION = "1.0"
GLOBAL_ERROR_COUNT = 0
#######################
# CONFIG SECTION START
#######################
GITLAB_URL = 'https://gitlab.source.com'
GITLAB_TOKEN = 'gitlab token'
# needed to clone the repositories, keep empty to try publickey (untested)
GITLAB_ADMIN_USER = 'admin username'
GITLAB_ADMIN_PASS = 'admin password'
GITEA_URL = 'https://gitea.dest.com'
GITEA_TOKEN = 'gitea token'
#######################
# CONFIG SECTION END
#######################
def main():
print_color(bcolors.HEADER, "---=== Gitlab to Gitea migration ===---")
print("Version: " + SCRIPT_VERSION)
print()
# private token or personal token authentication
gl = gitlab.Gitlab(GITLAB_URL, private_token=GITLAB_TOKEN)
gl.auth()
assert(isinstance(gl.user, gitlab.v4.objects.CurrentUser))
print_info("Connected to Gitlab, version: " + str(gl.version()))
gt = pygitea.API(GITEA_URL, token=GITEA_TOKEN)
gt_version = gt.get('/version').json()
print_info("Connected to Gitea, version: " + str(gt_version['version']))
# IMPORT USERS AND GROUPS
import_users_groups(gl, gt)
# IMPORT PROJECTS
import_projects(gl, gt)
print()
if GLOBAL_ERROR_COUNT == 0:
print_success("Migration finished with no errors!")
else:
print_error("Migration finished with " + str(GLOBAL_ERROR_COUNT) + " errors!")
#
# Data loading helpers for Gitea
#
def get_labels(gitea_api: pygitea, owner: string, repo: string) -> []:
existing_labels = []
label_response: requests.Response = gitea_api.get("/repos/" + owner + "/" + repo + "/labels")
if label_response.ok:
existing_labels = label_response.json()
else:
print_error("Failed to load existing milestones for project " + repo + "! " + label_response.text)
return existing_labels
def get_milestones(gitea_api: pygitea, owner: string, repo: string) -> []:
existing_milestones = []
milestone_response: requests.Response = gitea_api.get("/repos/" + owner + "/" + repo + "/milestones")
if milestone_response.ok:
existing_milestones = milestone_response.json()
else:
print_error("Failed to load existing milestones for project " + repo + "! " + milestone_response.text)
return existing_milestones
def get_issues(gitea_api: pygitea, owner: string, repo: string) -> []:
existing_issues = []
issue_response: requests.Response = gitea_api.get("/repos/" + owner + "/" + repo + "/issues", params={
"state": "all",
"page": -1
})
if issue_response.ok:
existing_issues = issue_response.json()
else:
print_error("Failed to load existing issues for project " + repo + "! " + issue_response.text)
return existing_issues
def get_teams(gitea_api: pygitea, orgname: string) -> []:
existing_teams = []
team_response: requests.Response = gitea_api.get("/orgs/" + orgname + "/teams")
if team_response.ok:
existing_teams = team_response.json()
else:
print_error("Failed to load existing teams for organization " + orgname + "! " + team_response.text)
return existing_teams
def get_team_members(gitea_api: pygitea, teamid: int) -> []:
existing_members = []
member_response: requests.Response = gitea_api.get("/teams/" + str(teamid) + "/members")
if member_response.ok:
existing_members = member_response.json()
else:
print_error("Failed to load existing members for team " + str(teamid) + "! " + member_response.text)
return existing_members
def get_collaborators(gitea_api: pygitea, owner: string, repo: string) -> []:
existing_collaborators = []
collaborator_response: requests.Response = gitea_api.get("/repos/" + owner+ "/" + repo + "/collaborators")
if collaborator_response.ok:
existing_collaborators = collaborator_response.json()
else:
print_error("Failed to load existing collaborators for project " + repo + "! " + collaborator_response.text)
return existing_collaborators
def get_user_or_group(gitea_api: pygitea, project: gitlab.v4.objects.Project) -> {}:
result = None
response: requests.Response = gitea_api.get("/users/" + project.namespace['path'])
if response.ok:
result = response.json()
else:
response: requests.Response = gitea_api.get("/orgs/" + name_clean(project.namespace["name"]))
if response.ok:
result = response.json()
else:
print_error("Failed to load user or group " + project.namespace["name"] + "! " + response.text)
return result
def get_user_keys(gitea_api: pygitea, username: string) -> {}:
result = []
key_response: requests.Response = gitea_api.get("/users/" + username + "/keys")
if key_response.ok:
result = key_response.json()
else:
print_error("Failed to load user keys for user " + username + "! " + key_response.text)
return result
def user_exists(gitea_api: pygitea, username: string) -> bool:
user_response: requests.Response = gitea_api.get("/users/" + username)
if user_response.ok:
print_warning("User " + username + " does already exist in Gitea, skipping!")
else:
print("User " + username + " not found in Gitea, importing!")
return user_response.ok
def user_key_exists(gitea_api: pygitea, username: string, keyname: string) -> bool:
existing_keys = get_user_keys(gitea_api, username)
if existing_keys:
existing_key = next((item for item in existing_keys if item["title"] == keyname), None)
if existing_key is not None:
print_warning("Public key " + keyname + " already exists for user " + username + ", skipping!")
return True
else:
print("Public key " + keyname + " does not exists for user " + username + ", importing!")
return False
else:
print("No public keys for user " + username + ", importing!")
return False
def organization_exists(gitea_api: pygitea, orgname: string) -> bool:
group_response: requests.Response = gitea_api.get("/orgs/" + orgname)
if group_response.ok:
print_warning("Group " + orgname + " does already exist in Gitea, skipping!")
else:
print("Group " + orgname + " not found in Gitea, importing!")
return group_response.ok
def member_exists(gitea_api: pygitea, username: string, teamid: int) -> bool:
existing_members = get_team_members(gitea_api, teamid)
if existing_members:
existing_member = next((item for item in existing_members if item["username"] == username), None)
if existing_member:
print_warning("Member " + username + " is already in team " + str(teamid) + ", skipping!")
return True
else:
print("Member " + username + " is not in team " + str(teamid) + ", importing!")
return False
else:
print("No members in team " + str(teamid) + ", importing!")
return False
def collaborator_exists(gitea_api: pygitea, owner: string, repo: string, username: string) -> bool:
collaborator_response: requests.Response = gitea_api.get("/repos/" + owner + "/" + repo + "/collaborators/" + username)
if collaborator_response.ok:
print_warning("Collaborator " + username + " does already exist in Gitea, skipping!")
else:
print("Collaborator " + username + " not found in Gitea, importing!")
return collaborator_response.ok
def repo_exists(gitea_api: pygitea, owner: string, repo: string) -> bool:
repo_response: requests.Response = gitea_api.get("/repos/" + owner + "/" + repo)
if repo_response.ok:
print_warning("Project " + repo + " does already exist in Gitea, skipping!")
else:
print("Project " + repo + " not found in Gitea, importing!")
return repo_response.ok
def label_exists(gitea_api: pygitea, owner: string, repo: string, labelname: string) -> bool:
existing_labels = get_labels(gitea_api, owner, repo)
if existing_labels:
existing_label = next((item for item in existing_labels if item["name"] == labelname), None)
if existing_label is not None:
print_warning("Label " + labelname + " already exists in project " + repo + ", skipping!")
return True
else:
print("Label " + labelname + " does not exists in project " + repo + ", importing!")
return False
else:
print("No labels in project " + repo + ", importing!")
return False
def milestone_exists(gitea_api: pygitea, owner: string, repo: string, milestone: string) -> bool:
existing_milestones = get_milestones(gitea_api, owner, repo)
if existing_milestones:
existing_milestone = next((item for item in existing_milestones if item["title"] == milestone), None)
if existing_milestone is not None:
print_warning("Milestone " + milestone + " already exists in project " + repo + ", skipping!")
return True
else:
print("Milestone " + milestone + " does not exists in project " + repo + ", importing!")
return False
else:
print("No milestones in project " + repo + ", importing!")
return False
def issue_exists(gitea_api: pygitea, owner: string, repo: string, issue: string) -> bool:
existing_issues = get_issues(gitea_api, owner, repo)
if existing_issues:
existing_issue = next((item for item in existing_issues if item["title"] == issue), None)
if existing_issue is not None:
print_warning("Issue " + issue + " already exists in project " + repo + ", skipping!")
return True
else:
print("Issue " + issue + " does not exists in project " + repo + ", importing!")
return False
else:
print("No issues in project " + repo + ", importing!")
return False
#
# Import helper functions
#
def _import_project_labels(gitea_api: pygitea, labels: [gitlab.v4.objects.ProjectLabel], owner: string, repo: string):
for label in labels:
if not label_exists(gitea_api, owner, repo, label.name):
import_response: requests.Response = gitea_api.post("/repos/" + owner + "/" + repo + "/labels", json={
"name": label.name,
"color": label.color,
"description": label.description # currently not supported
})
if import_response.ok:
print_info("Label " + label.name + " imported!")
else:
print_error("Label " + label.name + " import failed: " + import_response.text)
def _import_project_milestones(gitea_api: pygitea, milestones: [gitlab.v4.objects.ProjectMilestone], owner: string, repo: string):
for milestone in milestones:
if not milestone_exists(gitea_api, owner, repo, milestone.title):
due_date = None
if milestone.due_date is not None and milestone.due_date != '':
due_date = dateutil.parser.parse(milestone.due_date).strftime('%Y-%m-%dT%H:%M:%SZ')
import_response: requests.Response = gitea_api.post("/repos/" + owner + "/" + repo + "/milestones", json={
"description": milestone.description,
"due_on": due_date,
"title": milestone.title,
})
if import_response.ok:
print_info("Milestone " + milestone.title + " imported!")
existing_milestone = import_response.json()
if existing_milestone:
# update milestone state, this cannot be done in the initial import :(
# TODO: gitea api ignores the closed state...
update_response: requests.Response = gitea_api.patch("/repos/" + owner + "/" + repo + "/milestones/" + str(existing_milestone['id']), json={
"description": milestone.description,
"due_on": due_date,
"title": milestone.title,
"state": milestone.state
})
if update_response.ok:
print_info("Milestone " + milestone.title + " updated!")
else:
print_error("Milestone " + milestone.title + " update failed: " + update_response.text)
else:
print_error("Milestone " + milestone.title + " import failed: " + import_response.text)
def _import_project_issues(gitea_api: pygitea, issues: [gitlab.v4.objects.ProjectIssue], owner: string, repo: string):
# reload all existing milestones and labels, needed for assignment in issues
existing_milestones = get_milestones(gitea_api, owner, repo)
existing_labels = get_labels(gitea_api, owner, repo)
for issue in issues:
if not issue_exists(gitea_api, owner, repo, issue.title):
due_date = ''
if issue.due_date is not None:
due_date = dateutil.parser.parse(issue.due_date).strftime('%Y-%m-%dT%H:%M:%SZ')
assignee = None
if issue.assignee is not None:
assignee = issue.assignee['username']
assignees = []
for tmp_assignee in issue.assignees:
assignees.append(tmp_assignee['username'])
milestone = None
if issue.milestone is not None:
existing_milestone = next((item for item in existing_milestones if item["title"] == issue.milestone['title']), None)
if existing_milestone:
milestone = existing_milestone['id']
labels = []
for label in issue.labels:
existing_label = next((item for item in existing_labels if item["name"] == label), None)
if existing_label:
labels.append(existing_label['id'])
import_response: requests.Response = gitea_api.post("/repos/" + owner + "/" + repo + "/issues", json={
"assignee": assignee,
"assignees": assignees,
"body": issue.description,
"closed": issue.state == 'closed',
"due_on": due_date,
"labels": labels,
"milestone": milestone,
"title": issue.title,
})
if import_response.ok:
print_info("Issue " + issue.title + " imported!")
else:
print_error("Issue " + issue.title + " import failed: " + import_response.text)
def _import_project_repo(gitea_api: pygitea, project: gitlab.v4.objects.Project):
if not repo_exists(gitea_api, project.namespace['name'], name_clean(project.name)):
clone_url = project.http_url_to_repo
if GITLAB_ADMIN_PASS == '' and GITLAB_ADMIN_USER == '':
clone_url = project.ssh_url_to_repo
private = project.visibility == 'private' or project.visibility == 'internal'
# Load the owner (users and groups can both be fetched using the /users/ endpoint)
owner = get_user_or_group(gitea_api, project)
if owner:
import_response: requests.Response = gitea_api.post("/repos/migrate", json={
"auth_password": GITLAB_ADMIN_PASS,
"auth_username": GITLAB_ADMIN_USER,
"clone_addr": clone_url,
"description": project.description,
"mirror": False,
"private": private,
"repo_name": name_clean(project.name),
"uid": owner['id']
})
if import_response.ok:
print_info("Project " + name_clean(project.name) + " imported!")
else:
print_error("Project " + name_clean(project.name) + " import failed: " + import_response.text)
else:
print_error("Failed to load project owner for project " + name_clean(project.name))
def _import_project_repo_collaborators(gitea_api: pygitea, collaborators: [gitlab.v4.objects.ProjectMember], project: gitlab.v4.objects.Project):
for collaborator in collaborators:
if not collaborator_exists(gitea_api, project.namespace['name'], name_clean(project.name), collaborator.username):
permission = "read"
if collaborator.access_level == 10: # guest access
permission = "read"
elif collaborator.access_level == 20: # reporter access
permission = "read"
elif collaborator.access_level == 30: # developer access
permission = "write"
elif collaborator.access_level == 40: # maintainer access
permission = "admin"
elif collaborator.access_level == 50: # owner access (only for groups)
print_error("Groupmembers are currently not supported!")
continue # groups are not supported
else:
print_warning("Unsupported access level " + str(collaborator.access_level) + ", setting permissions to 'read'!")
import_response: requests.Response = gitea_api.put("/repos/" + project.namespace['name'] +"/" + name_clean(project.name) + "/collaborators/" + collaborator.username, json={
"permission": permission
})
if import_response.ok:
print_info("Collaborator " + collaborator.username + " imported!")
else:
print_error("Collaborator " + collaborator.username + " import failed: " + import_response.text)
def _import_users(gitea_api: pygitea, users: [gitlab.v4.objects.User], notify: bool = False):
for user in users:
keys: [gitlab.v4.objects.UserKey] = user.keys.list(all=True)
print("Importing user " + user.username + "...")
print("Found " + str(len(keys)) + " public keys for user " + user.username)
if not user_exists(gitea_api, user.username):
tmp_password = 'Tmp1!' + ''.join(random.choices(string.ascii_uppercase + string.digits, k=10))
tmp_email = user.username + '@noemail-git.local' # Some gitlab instances do not publish user emails
try:
tmp_email = user.email
except AttributeError:
pass
import_response: requests.Response = gitea_api.post("/admin/users", json={
"email": tmp_email,
"full_name": user.name,
"login_name": user.username,
"password": tmp_password,
"send_notify": notify,
"source_id": 0, # local user
"username": user.username
})
if import_response.ok:
print_info("User " + user.username + " imported, temporary password: " + tmp_password)
else:
print_error("User " + user.username + " import failed: " + import_response.text)
# import public keys
_import_user_keys(gitea_api, keys, user)
def _import_user_keys(gitea_api: pygitea, keys: [gitlab.v4.objects.UserKey], user: gitlab.v4.objects.User):
for key in keys:
if not user_key_exists(gitea_api, user.username, key.title):
import_response: requests.Response = gitea_api.post("/admin/users/" + user.username + "/keys", json={
"key": key.key,
"read_only": True,
"title": key.title,
})
if import_response.ok:
print_info("Public key " + key.title + " imported!")
else:
print_error("Public key " + key.title + " import failed: " + import_response.text)
def _import_groups(gitea_api: pygitea, groups: [gitlab.v4.objects.Group]):
for group in groups:
members: [gitlab.v4.objects.GroupMember] = group.members.list(all=True)
print("Importing group " + name_clean(group.name) + "...")
print("Found " + str(len(members)) + " gitlab members for group " + name_clean(group.name))
if not organization_exists(gitea_api, name_clean(group.name)):
import_response: requests.Response = gitea_api.post("/orgs", json={
"description": group.description,
"full_name": group.full_name,
"location": "",
"username": name_clean(group.name),
"website": ""
})
if import_response.ok:
print_info("Group " + name_clean(group.name) + " imported!")
else:
print_error("Group " + name_clean(group.name) + " import failed: " + import_response.text)
# import group members
_import_group_members(gitea_api, members, group)
def _import_group_members(gitea_api: pygitea, members: [gitlab.v4.objects.GroupMember], group: gitlab.v4.objects.Group):
# TODO: create teams based on gitlab permissions (access_level of group member)
existing_teams = get_teams(gitea_api, name_clean(group.name))
if existing_teams:
first_team = existing_teams[0]
print("Organization teams fetched, importing users to first team: " + first_team['name'])
# add members to teams
for member in members:
if not member_exists(gitea_api, member.username, first_team['id']):
import_response: requests.Response = gitea_api.put("/teams/" + str(first_team['id']) + "/members/" + member.username)
if import_response.ok:
print_info("Member " + member.username + " added to group " + name_clean(group.name) + "!")
else:
print_error("Failed to add member " + member.username + " to group " + name_clean(group.name) + "!")
else:
print_error("Failed to import members to group " + name_clean(group.name) + ": no teams found!")
#
# Import functions
#
def import_users_groups(gitlab_api: gitlab.Gitlab, gitea_api: pygitea, notify=False):
# read all users
users: [gitlab.v4.objects.User] = gitlab_api.users.list(all=True)
groups: [gitlab.v4.objects.Group] = gitlab_api.groups.list(all=True)
print("Found " + str(len(users)) + " gitlab users as user " + gitlab_api.user.username)
print("Found " + str(len(groups)) + " gitlab groups as user " + gitlab_api.user.username)
# import all non existing users
_import_users(gitea_api, users, notify)
# import all non existing groups
_import_groups(gitea_api, groups)
def import_projects(gitlab_api: gitlab.Gitlab, gitea_api: pygitea):
# read all projects and their issues
projects: gitlab.v4.objects.Project = gitlab_api.projects.list(all=True)
print("Found " + str(len(projects)) + " gitlab projects as user " + gitlab_api.user.username)
for project in projects:
collaborators: [gitlab.v4.objects.ProjectMember] = project.members.list(all=True)
labels: [gitlab.v4.objects.ProjectLabel] = project.labels.list(all=True)
milestones: [gitlab.v4.objects.ProjectMilestone] = project.milestones.list(all=True)
issues: [gitlab.v4.objects.ProjectIssue] = project.issues.list(all=True)
print("Importing project " + name_clean(project.name) + " from owner " + project.namespace['name'])
print("Found " + str(len(collaborators)) + " collaborators for project " + name_clean(project.name))
print("Found " + str(len(labels)) + " labels for project " + name_clean(project.name))
print("Found " + str(len(milestones)) + " milestones for project " + name_clean(project.name))
print("Found " + str(len(issues)) + " issues for project " + name_clean(project.name))
# import project repo
_import_project_repo(gitea_api, project)
# import collaborators
_import_project_repo_collaborators(gitea_api, collaborators, project)
# import labels
_import_project_labels(gitea_api, labels, project.namespace['name'], name_clean(project.name))
# import milestones
_import_project_milestones(gitea_api, milestones, project.namespace['name'], name_clean(project.name))
# import issues
_import_project_issues(gitea_api, issues, project.namespace['name'], name_clean(project.name))
#
# Helper functions
#
class bcolors:
HEADER = '\033[95m'
OKBLUE = '\033[94m'
OKGREEN = '\033[92m'
WARNING = '\033[93m'
FAIL = '\033[91m'
ENDC = '\033[0m'
BOLD = '\033[1m'
UNDERLINE = '\033[4m'
def color_message(color, message, colorend=bcolors.ENDC, bold=False):
if bold:
return bcolors.BOLD + color_message(color, message, colorend, False)
return color + message + colorend
def print_color(color, message, colorend=bcolors.ENDC, bold=False):
print(color_message(color, message, colorend))
def print_info(message):
print_color(bcolors.OKBLUE, message)
def print_success(message):
print_color(bcolors.OKGREEN, message)
def print_warning(message):
print_color(bcolors.WARNING, message)
def print_error(message):
global GLOBAL_ERROR_COUNT
GLOBAL_ERROR_COUNT += 1
print_color(bcolors.FAIL, message)
def name_clean(name):
newName = name.replace(" ", "_")
newName = re.sub(r"[^a-zA-Z0-9_\.-]", "-", newName)
if (newName.lower() == "plugins"):
return newName + "-user"
return newName
if __name__ == "__main__":
main()