mirror of
https://github.com/maziggy/bambuddy.git
synced 2026-10-01 11:47:46 +02:00
258 lines
11 KiB
Python
258 lines
11 KiB
Python
"""GitLab backend — implements GitProviderBackend using the GitLab REST API v4."""
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import base64
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import json
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import logging
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import re
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import urllib.parse
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from datetime import datetime, timezone
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import httpx
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from backend.app.services.git_providers.base import GitProviderBackend
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logger = logging.getLogger(__name__)
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class GitLabBackend(GitProviderBackend):
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"""Backend for gitlab.com and self-hosted GitLab instances."""
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def get_api_base(self, repo_url: str) -> str:
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match = re.match(r"(https?://[\w.\-]+(:\d+)?)/", repo_url)
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if not match:
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raise ValueError(f"Cannot derive API base from URL: {repo_url}")
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return f"{match.group(1)}/api/v4"
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def get_headers(self, token: str) -> dict:
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return {"Authorization": f"Bearer {token}", "Content-Type": "application/json"}
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def parse_repo_url(self, url: str) -> tuple[str, str]:
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"""Return (namespace, repo) from HTTPS or SSH URL.
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namespace may include subgroups, e.g. 'group/subgroup' for
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gitlab.com/group/subgroup/project. Callers join them with '/' and
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URL-encode the result for /api/v4/projects/{encoded_path}.
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"""
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if not url or len(url) > 500:
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raise ValueError("Invalid Git URL: URL too long or empty")
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match = re.match(r"https?://[\w.\-]+(:\d+)?/(.+?)(?:\.git)?/?$", url)
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if match:
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full_path = match.group(2)
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if "/" not in full_path:
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raise ValueError(f"Cannot parse repository URL: {url}")
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namespace, _, repo = full_path.rpartition("/")
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return namespace, repo
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match = re.match(r"git@[\w.\-]+:(.+?)(?:\.git)?$", url)
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if match:
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full_path = match.group(1)
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if "/" not in full_path:
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raise ValueError(f"Cannot parse repository URL: {url}")
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namespace, _, repo = full_path.rpartition("/")
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return namespace, repo
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raise ValueError(f"Cannot parse repository URL: {url}")
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async def test_connection(self, repo_url: str, token: str, client: httpx.AsyncClient) -> dict:
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try:
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owner, repo = self.parse_repo_url(repo_url)
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api_base = self.get_api_base(repo_url)
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headers = self.get_headers(token)
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encoded_path = urllib.parse.quote(f"{owner}/{repo}", safe="")
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response = await client.get(f"{api_base}/projects/{encoded_path}", headers=headers)
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if response.status_code == 401:
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return {"success": False, "message": "Invalid access token", "repo_name": None, "permissions": None}
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if response.status_code == 404:
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return {
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"success": False,
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"message": "Repository not found. Check URL and token permissions.",
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"repo_name": None,
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"permissions": None,
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}
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if response.status_code != 200:
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return {
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"success": False,
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"message": f"API error: {response.status_code}",
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"repo_name": None,
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"permissions": None,
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}
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data = response.json()
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perms = data.get("permissions") or {}
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project_level = (perms.get("project_access") or {}).get("access_level", 0)
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group_level = (perms.get("group_access") or {}).get("access_level", 0)
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effective = max(project_level, group_level)
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if effective < 30: # Developer = 30, Maintainer = 40, Owner = 50
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return {
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"success": False,
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"message": "Token requires Developer access or higher to push",
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"repo_name": data.get("name_with_namespace"),
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"permissions": perms,
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}
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return {
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"success": True,
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"message": "Connection successful",
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"repo_name": data.get("name_with_namespace"),
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"permissions": perms,
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}
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except Exception as e:
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logger.error("GitLab connection test failed: %s", e)
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return {
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"success": False,
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"message": f"Connection failed: {type(e).__name__}",
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"repo_name": None,
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"permissions": None,
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}
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async def push_files(
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self,
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repo_url: str,
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token: str,
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branch: str,
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files: dict,
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client: httpx.AsyncClient,
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) -> dict:
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try:
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owner, repo = self.parse_repo_url(repo_url)
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api_base = self.get_api_base(repo_url)
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headers = self.get_headers(token)
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encoded_path = urllib.parse.quote(f"{owner}/{repo}", safe="")
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encoded_branch = urllib.parse.quote(branch, safe="")
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branch_response = await client.get(
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f"{api_base}/projects/{encoded_path}/repository/branches/{encoded_branch}",
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headers=headers,
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)
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if branch_response.status_code == 404:
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proj_response = await client.get(f"{api_base}/projects/{encoded_path}", headers=headers)
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if proj_response.status_code != 200:
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return {"status": "failed", "message": "Failed to get project info"}
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default_branch = proj_response.json().get("default_branch", "main")
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default_encoded = urllib.parse.quote(default_branch, safe="")
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default_response = await client.get(
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f"{api_base}/projects/{encoded_path}/repository/branches/{default_encoded}",
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headers=headers,
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)
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if default_response.status_code != 200:
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return await self._create_initial_commit(client, headers, api_base, encoded_path, branch, files)
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create_response = await client.post(
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f"{api_base}/projects/{encoded_path}/repository/branches",
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headers=headers,
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json={"branch": branch, "ref": default_branch},
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)
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if create_response.status_code not in (200, 201):
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return {"status": "failed", "message": f"Failed to create branch: {create_response.status_code}"}
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elif branch_response.status_code != 200:
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return {"status": "failed", "message": f"Failed to check branch: {branch_response.status_code}"}
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existing_blobs: dict[str, str] = {}
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page = 1
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while True:
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tree_response = await client.get(
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f"{api_base}/projects/{encoded_path}/repository/tree",
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headers=headers,
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params={"recursive": "true", "ref": branch, "per_page": 100, "page": page},
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)
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if tree_response.status_code != 200:
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break
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items = tree_response.json()
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if not items:
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break
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for item in items:
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if item.get("type") == "blob":
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existing_blobs[item["path"]] = item["id"]
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page += 1
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actions = []
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for path, content in files.items():
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content_str = json.dumps(content, indent=2, default=str)
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content_bytes = content_str.encode("utf-8")
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content_sha = self._blob_sha(content_bytes)
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if path in existing_blobs and existing_blobs[path] == content_sha:
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continue
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actions.append(
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{
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"action": "update" if path in existing_blobs else "create",
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"file_path": path,
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"content": base64.b64encode(content_bytes).decode(),
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"encoding": "base64",
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}
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)
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if not actions:
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return {"status": "skipped", "message": "No changes to commit", "commit_sha": None, "files_changed": 0}
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commit_message = f"Bambuddy backup - {datetime.now(timezone.utc).strftime('%Y-%m-%d %H:%M:%S UTC')}"
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commit_response = await client.post(
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f"{api_base}/projects/{encoded_path}/repository/commits",
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headers=headers,
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json={"branch": branch, "commit_message": commit_message, "actions": actions},
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)
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if commit_response.status_code not in (200, 201):
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return {
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"status": "failed",
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"message": f"Failed to create commit: {self._truncated_response_text(commit_response)}",
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}
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return {
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"status": "success",
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"message": f"Backup successful - {len(actions)} files updated",
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"commit_sha": commit_response.json().get("id"),
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"files_changed": len(actions),
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}
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except Exception as e:
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logger.error("Push to GitLab failed: %s", e)
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return {"status": "failed", "message": str(e), "error": str(e)}
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async def _create_initial_commit(
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self,
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client: httpx.AsyncClient,
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headers: dict,
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api_base: str,
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encoded_path: str,
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branch: str,
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files: dict,
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) -> dict:
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"""Create the first commit in an empty repository."""
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try:
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actions = []
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for path, content in files.items():
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content_str = json.dumps(content, indent=2, default=str)
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actions.append(
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{
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"action": "create",
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"file_path": path,
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"content": base64.b64encode(content_str.encode()).decode(),
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"encoding": "base64",
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}
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)
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commit_message = f"Initial Bambuddy backup - {datetime.now(timezone.utc).strftime('%Y-%m-%d %H:%M:%S UTC')}"
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commit_response = await client.post(
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f"{api_base}/projects/{encoded_path}/repository/commits",
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headers=headers,
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json={"branch": branch, "commit_message": commit_message, "actions": actions, "start_branch": branch},
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)
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if commit_response.status_code not in (200, 201):
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return {
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"status": "failed",
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"message": f"Failed to create initial commit: {self._truncated_response_text(commit_response)}",
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}
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return {
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"status": "success",
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"message": f"Initial backup created - {len(files)} files",
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"commit_sha": commit_response.json().get("id"),
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"files_changed": len(files),
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}
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except Exception as e:
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return {"status": "failed", "message": str(e)}
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