432 lines
13 KiB
Python
432 lines
13 KiB
Python
import logging
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from functools import wraps
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from urlparse import urljoin
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from app import app, gitlab_trigger
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from jsonschema import validate
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from buildtrigger.triggerutil import (RepositoryReadException, TriggerActivationException,
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TriggerDeactivationException, TriggerStartException,
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SkipRequestException, InvalidPayloadException,
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determine_build_ref, raise_if_skipped_build,
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find_matching_branches)
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from buildtrigger.basehandler import BuildTriggerHandler
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from util.security.ssh import generate_ssh_keypair
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from util.dict_wrappers import JSONPathDict, SafeDictSetter
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from endpoints.exception import ExternalServiceTimeout
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import gitlab
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import requests
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logger = logging.getLogger(__name__)
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GITLAB_WEBHOOK_PAYLOAD_SCHEMA = {
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'type': 'object',
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'properties': {
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'ref': {
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'type': 'string',
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},
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'checkout_sha': {
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'type': 'string',
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},
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'repository': {
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'type': 'object',
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'properties': {
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'git_ssh_url': {
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'type': 'string',
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},
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},
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'required': ['git_ssh_url'],
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},
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'commits': {
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'type': 'array',
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'items': {
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'type': 'object',
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'properties': {
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'url': {
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'type': 'string',
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},
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'message': {
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'type': 'string',
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},
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'timestamp': {
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'type': 'string',
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},
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'author': {
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'type': 'object',
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'properties': {
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'email': {
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'type': 'string',
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},
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},
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'required': ['email'],
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},
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},
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'required': ['url', 'message', 'timestamp'],
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},
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'minItems': 1,
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}
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},
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'required': ['ref', 'checkout_sha', 'repository'],
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}
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def _catch_timeouts(func):
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@wraps(func)
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def wrapper(*args, **kwargs):
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try:
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return func(*args, **kwargs)
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except requests.exceptions.Timeout:
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msg = 'Request to the GitLab API timed out'
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logger.exception(msg)
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raise ExternalServiceTimeout(msg)
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return wrapper
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def get_transformed_webhook_payload(gl_payload, default_branch=None, lookup_user=None):
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""" Returns the Gitlab webhook JSON payload transformed into our own payload
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format. If the gl_payload is not valid, returns None.
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"""
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try:
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validate(gl_payload, GITLAB_WEBHOOK_PAYLOAD_SCHEMA)
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except Exception as exc:
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raise InvalidPayloadException(exc.message)
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payload = JSONPathDict(gl_payload)
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config = SafeDictSetter()
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config['commit'] = payload['checkout_sha']
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config['ref'] = payload['ref']
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config['default_branch'] = default_branch
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config['git_url'] = payload['repository.git_ssh_url']
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config['commit_info.url'] = payload['commits[0].url']
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config['commit_info.message'] = payload['commits[0].message']
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config['commit_info.date'] = payload['commits[0].timestamp']
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# Note: Gitlab does not send full user information with the payload, so we have to
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# (optionally) look it up.
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author_email = payload['commits[0].author.email']
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if lookup_user and author_email:
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author_info = lookup_user(author_email)
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if author_info:
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config['commit_info.author.username'] = author_info['username']
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config['commit_info.author.url'] = author_info['html_url']
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config['commit_info.author.avatar_url'] = author_info['avatar_url']
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return config.dict_value()
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class GitLabBuildTrigger(BuildTriggerHandler):
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"""
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BuildTrigger for GitLab.
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"""
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@classmethod
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def service_name(cls):
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return 'gitlab'
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def _get_authorized_client(self):
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auth_token = self.auth_token or 'invalid'
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return gitlab.Gitlab(gitlab_trigger.api_endpoint(), oauth_token=auth_token, timeout=5)
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def is_active(self):
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return 'hook_id' in self.config
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@_catch_timeouts
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def activate(self, standard_webhook_url):
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config = self.config
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new_build_source = config['build_source']
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gl_client = self._get_authorized_client()
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# Find the GitLab repository.
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repository = gl_client.getproject(new_build_source)
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if repository is False:
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msg = 'Unable to find GitLab repository for source: %s' % new_build_source
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raise TriggerActivationException(msg)
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# Add a deploy key to the repository.
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public_key, private_key = generate_ssh_keypair()
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config['credentials'] = [
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{
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'name': 'SSH Public Key',
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'value': public_key,
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},
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]
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key = gl_client.adddeploykey(repository['id'], '%s Builder' % app.config['REGISTRY_TITLE'],
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public_key)
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if key is False:
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msg = 'Unable to add deploy key to repository: %s' % new_build_source
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raise TriggerActivationException(msg)
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config['key_id'] = key['id']
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# Add the webhook to the GitLab repository.
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hook = gl_client.addprojecthook(repository['id'], standard_webhook_url, push=True)
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if hook is False:
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msg = 'Unable to create webhook on repository: %s' % new_build_source
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raise TriggerActivationException(msg)
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config['hook_id'] = hook['id']
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self.config = config
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return config, {'private_key': private_key}
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def deactivate(self):
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config = self.config
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gl_client = self._get_authorized_client()
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# Find the GitLab repository.
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repository = gl_client.getproject(config['build_source'])
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if repository is False:
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msg = 'Unable to find GitLab repository for source: %s' % config['build_source']
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raise TriggerDeactivationException(msg)
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# Remove the webhook.
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success = gl_client.deleteprojecthook(repository['id'], config['hook_id'])
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if success is False:
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msg = 'Unable to remove hook: %s' % config['hook_id']
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raise TriggerDeactivationException(msg)
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config.pop('hook_id', None)
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# Remove the key
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success = gl_client.deletedeploykey(repository['id'], config['key_id'])
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if success is False:
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msg = 'Unable to remove deploy key: %s' % config['key_id']
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raise TriggerDeactivationException(msg)
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config.pop('key_id', None)
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self.config = config
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return config
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@_catch_timeouts
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def list_build_sources(self):
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gl_client = self._get_authorized_client()
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current_user = gl_client.currentuser()
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if current_user is False:
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raise RepositoryReadException('Unable to get current user')
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repositories = gl_client.getprojects()
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if repositories is False:
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raise RepositoryReadException('Unable to list user repositories')
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namespaces = {}
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for repo in repositories:
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owner = repo['namespace']['name']
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if not owner in namespaces:
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namespaces[owner] = {
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'personal': owner == current_user['username'],
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'repos': [],
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'info': {
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'name': owner,
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}
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}
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namespaces[owner]['repos'].append(repo['path_with_namespace'])
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return namespaces.values()
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@_catch_timeouts
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def list_build_subdirs(self):
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config = self.config
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gl_client = self._get_authorized_client()
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new_build_source = config['build_source']
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repository = gl_client.getproject(new_build_source)
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if repository is False:
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msg = 'Unable to find GitLab repository for source: %s' % new_build_source
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raise RepositoryReadException(msg)
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repo_branches = gl_client.getbranches(repository['id'])
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if repo_branches is False:
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msg = 'Unable to find GitLab branches for source: %s' % new_build_source
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raise RepositoryReadException(msg)
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branches = [branch['name'] for branch in repo_branches]
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branches = find_matching_branches(config, branches)
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branches = branches or [repository['default_branch'] or 'master']
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repo_tree = gl_client.getrepositorytree(repository['id'], ref_name=branches[0])
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if repo_tree is False:
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msg = 'Unable to find GitLab repository tree for source: %s' % new_build_source
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raise RepositoryReadException(msg)
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for node in repo_tree:
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if node['name'] == 'Dockerfile':
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return ['/']
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return []
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@_catch_timeouts
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def load_dockerfile_contents(self):
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gl_client = self._get_authorized_client()
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path = self.get_dockerfile_path()
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repository = gl_client.getproject(self.config['build_source'])
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if repository is False:
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return None
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branches = self.list_field_values('branch_name')
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branches = find_matching_branches(self.config, branches)
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if branches == []:
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return None
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branch_name = branches[0]
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if repository['default_branch'] in branches:
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branch_name = repository['default_branch']
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contents = gl_client.getrawfile(repository['id'], branch_name, path)
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if contents is False:
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return None
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return contents
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@_catch_timeouts
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def list_field_values(self, field_name, limit=None):
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if field_name == 'refs':
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branches = self.list_field_values('branch_name')
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tags = self.list_field_values('tag_name')
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return ([{'kind': 'branch', 'name': b} for b in branches] +
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[{'kind': 'tag', 'name': t} for t in tags])
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gl_client = self._get_authorized_client()
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repo = gl_client.getproject(self.config['build_source'])
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if repo is False:
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return []
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if field_name == 'tag_name':
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tags = gl_client.getrepositorytags(repo['id'])
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if tags is False:
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return []
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if limit:
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tags = tags[0:limit]
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return [tag['name'] for tag in tags]
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if field_name == 'branch_name':
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branches = gl_client.getbranches(repo['id'])
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if branches is False:
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return []
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if limit:
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branches = branches[0:limit]
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return [branch['name'] for branch in branches]
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return None
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def get_repository_url(self):
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return gitlab_trigger.get_public_url(self.config['build_source'])
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@_catch_timeouts
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def lookup_user(self, email):
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gl_client = self._get_authorized_client()
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try:
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[user] = gl_client.getusers(search=email)
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return {
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'username': user['username'],
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'html_url': gl_client.host + '/' + user['username'],
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'avatar_url': user['avatar_url']
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}
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except ValueError:
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return None
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@_catch_timeouts
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def get_metadata_for_commit(self, commit_sha, ref, repo):
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gl_client = self._get_authorized_client()
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commit = gl_client.getrepositorycommit(repo['id'], commit_sha)
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metadata = {
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'commit': commit['id'],
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'ref': ref,
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'default_branch': repo['default_branch'],
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'git_url': repo['ssh_url_to_repo'],
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'commit_info': {
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'url': gl_client.host + '/' + repo['path_with_namespace'] + '/commit/' + commit['id'],
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'message': commit['message'],
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'date': commit['committed_date'],
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},
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}
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committer = None
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if 'committer_email' in commit:
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committer = self.lookup_user(commit['committer_email'])
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author = None
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if 'author_email' in commit:
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author = self.lookup_user(commit['author_email'])
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if committer is not None:
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metadata['commit_info']['committer'] = {
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'username': committer['username'],
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'avatar_url': committer['avatar_url'],
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'url': gl_client.host + '/' + committer['username'],
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}
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if author is not None:
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metadata['commit_info']['author'] = {
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'username': author['username'],
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'avatar_url': author['avatar_url'],
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'url': gl_client.host + '/' + author['username']
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}
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return metadata
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@_catch_timeouts
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def manual_start(self, run_parameters=None):
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gl_client = self._get_authorized_client()
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repo = gl_client.getproject(self.config['build_source'])
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if repo is False:
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raise TriggerStartException('Could not find repository')
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def get_tag_sha(tag_name):
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tags = gl_client.getrepositorytags(repo['id'])
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if tags is False:
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raise TriggerStartException('Could not find tags')
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for tag in tags:
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if tag['name'] == tag_name:
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return tag['commit']['id']
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raise TriggerStartException('Could not find commit')
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def get_branch_sha(branch_name):
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branch = gl_client.getbranch(repo['id'], branch_name)
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if branch is False:
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raise TriggerStartException('Could not find branch')
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return branch['commit']['id']
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# Find the branch or tag to build.
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(commit_sha, ref) = determine_build_ref(run_parameters, get_branch_sha, get_tag_sha,
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repo['default_branch'])
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metadata = self.get_metadata_for_commit(commit_sha, ref, repo)
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return self.prepare_build(metadata, is_manual=True)
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@_catch_timeouts
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def handle_trigger_request(self, request):
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payload = request.get_json()
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if not payload:
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raise SkipRequestException()
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# Lookup the default branch.
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default_branch = None
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gl_client = self._get_authorized_client()
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repo = gl_client.getproject(self.config['build_source'])
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if repo is not False:
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default_branch = repo['default_branch']
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lookup_user = self.lookup_user
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logger.debug('GitLab trigger payload %s', payload)
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metadata = get_transformed_webhook_payload(payload, default_branch=default_branch,
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lookup_user=lookup_user)
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prepared = self.prepare_build(metadata)
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# Check if we should skip this build.
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raise_if_skipped_build(prepared, self.config)
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return prepared
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