| # Copyright 2016 The Chromium Authors. All rights reserved. |
| # Use of this source code is govered by a BSD-style |
| # license that can be found in the LICENSE file or at |
| # https://developers.google.com/open-source/licenses/bsd |
| |
| """Classes to hold information parsed from a request. |
| |
| To simplify our servlets and avoid duplication of code, we parse some |
| info out of the request as soon as we get it and then pass a MonorailRequest |
| object to the servlet-specific request handler methods. |
| """ |
| |
| import endpoints |
| import logging |
| import re |
| import urllib |
| |
| from third_party import ezt |
| |
| from google.appengine.api import app_identity |
| from google.appengine.api import oauth |
| |
| import webapp2 |
| |
| import settings |
| from businesslogic import work_env |
| from features import features_constants |
| from framework import authdata |
| from framework import exceptions |
| from framework import framework_bizobj |
| from framework import framework_constants |
| from framework import framework_views |
| from framework import permissions |
| from framework import profiler |
| from framework import sql |
| from framework import template_helpers |
| from proto import api_pb2_v1 |
| from tracker import tracker_bizobj |
| from tracker import tracker_constants |
| |
| |
| _HOSTPORT_RE = re.compile('^[-a-z0-9.]+(:\d+)?$', re.I) |
| |
| |
| class MonorailRequestBase(object): |
| """A base class with common attributes for internal and external requests.""" |
| |
| def __init__( |
| self, services=None, user_id=None, user_email=None, cnxn=None): |
| self.cnxn = cnxn or sql.MonorailConnection() |
| self.profiler = profiler.Profiler() |
| if user_id: |
| assert services |
| self.auth = authdata.AuthData.FromUserID(self.cnxn, user_id, services) |
| elif user_email: |
| assert services |
| self.auth = authdata.AuthData.FromEmail(self.cnxn, user_email, services) |
| else: |
| self.auth = authdata.AuthData() |
| |
| self.project_name = None |
| self.project = None |
| self.config = None |
| self.warnings = [] |
| self.errors = template_helpers.EZTError() |
| self.perms = None |
| |
| def LookupLoggedInUserPerms(self): |
| """Once we have the user and project, calculate their permissions.""" |
| with self.profiler.Phase('looking up signed in user permissions'): |
| self.perms = permissions.GetPermissions( |
| self.auth.user_pb, self.auth.effective_ids, self.project) |
| |
| @property |
| def project_id(self): |
| return self.project.project_id if self.project else None |
| |
| def CleanUp(self): |
| """Close the database connection so that the app does not run out.""" |
| if self.cnxn: |
| self.cnxn.Close() |
| self.cnxn = None |
| |
| |
| class MonorailApiRequest(MonorailRequestBase): |
| """A class to hold information parsed from the Endpoints API request.""" |
| |
| # pylint: disable=attribute-defined-outside-init |
| def __init__(self, request, services, cnxn=None): |
| requester = ( |
| endpoints.get_current_user() or |
| oauth.get_current_user( |
| framework_constants.OAUTH_SCOPE)) |
| requester_email = requester.email().lower() |
| super(MonorailApiRequest, self).__init__( |
| services=services, user_email=requester_email, cnxn=cnxn) |
| self.me_user_id = self.auth.user_id |
| self.viewed_username = None |
| self.viewed_user_auth = None |
| self.issue = None |
| self.granted_perms = set() |
| |
| # query parameters |
| self.params = { |
| 'can': 1, |
| 'start': 0, |
| 'num': 100, |
| 'q': '', |
| 'sort': '', |
| 'groupby': '', |
| 'projects': [], |
| 'hotlists':[]} |
| self.use_cached_searches = True |
| self.mode = None |
| |
| if hasattr(request, 'projectId'): |
| self.project_name = request.projectId |
| with work_env.WorkEnv(self, services) as we: |
| self.project = we.GetProjectByName(self.project_name) |
| self.params['projects'].append(self.project_name) |
| self.config = we.GetProjectConfig(self.project_id) |
| if hasattr(request, 'additionalProject'): |
| self.params['projects'].extend(request.additionalProject) |
| self.params['projects'] = list(set(self.params['projects'])) |
| if hasattr(request, 'issueId'): |
| self.issue = we.GetIssueByLocalID( |
| self.project_id, request.issueId, use_cache=False) |
| self.granted_perms = tracker_bizobj.GetGrantedPerms( |
| self.issue, self.auth.effective_ids, self.config) |
| if hasattr(request, 'userId'): |
| self.viewed_username = request.userId.lower() |
| if self.viewed_username == 'me': |
| self.viewed_username = requester_email |
| self.viewed_user_auth = authdata.AuthData.FromEmail( |
| self.cnxn, self.viewed_username, services) |
| elif hasattr(request, 'groupName'): |
| self.viewed_username = request.groupName.lower() |
| try: |
| self.viewed_user_auth = authdata.AuthData.FromEmail( |
| self.cnxn, self.viewed_username, services) |
| except exceptions.NoSuchUserException: |
| self.viewed_user_auth = None |
| self.LookupLoggedInUserPerms() |
| |
| # Build q. |
| if hasattr(request, 'q') and request.q: |
| self.params['q'] = request.q |
| if hasattr(request, 'publishedMax') and request.publishedMax: |
| self.params['q'] += ' opened<=%d' % request.publishedMax |
| if hasattr(request, 'publishedMin') and request.publishedMin: |
| self.params['q'] += ' opened>=%d' % request.publishedMin |
| if hasattr(request, 'updatedMax') and request.updatedMax: |
| self.params['q'] += ' modified<=%d' % request.updatedMax |
| if hasattr(request, 'updatedMin') and request.updatedMin: |
| self.params['q'] += ' modified>=%d' % request.updatedMin |
| if hasattr(request, 'owner') and request.owner: |
| self.params['q'] += ' owner:%s' % request.owner |
| if hasattr(request, 'status') and request.status: |
| self.params['q'] += ' status:%s' % request.status |
| if hasattr(request, 'label') and request.label: |
| self.params['q'] += ' label:%s' % request.label |
| |
| if hasattr(request, 'can') and request.can: |
| if request.can == api_pb2_v1.CannedQuery.all: |
| self.params['can'] = 1 |
| elif request.can == api_pb2_v1.CannedQuery.new: |
| self.params['can'] = 6 |
| elif request.can == api_pb2_v1.CannedQuery.open: |
| self.params['can'] = 2 |
| elif request.can == api_pb2_v1.CannedQuery.owned: |
| self.params['can'] = 3 |
| elif request.can == api_pb2_v1.CannedQuery.reported: |
| self.params['can'] = 4 |
| elif request.can == api_pb2_v1.CannedQuery.starred: |
| self.params['can'] = 5 |
| elif request.can == api_pb2_v1.CannedQuery.to_verify: |
| self.params['can'] = 7 |
| else: # Endpoints should have caught this. |
| raise exceptions.InputException( |
| 'Canned query %s is not supported.', request.can) |
| if hasattr(request, 'startIndex') and request.startIndex: |
| self.params['start'] = request.startIndex |
| if hasattr(request, 'maxResults') and request.maxResults: |
| self.params['num'] = request.maxResults |
| if hasattr(request, 'sort') and request.sort: |
| self.params['sort'] = request.sort |
| |
| self.query_project_names = self.GetParam('projects') |
| self.group_by_spec = self.GetParam('groupby') |
| self.sort_spec = self.GetParam('sort') |
| self.query = self.GetParam('q') |
| self.can = self.GetParam('can') |
| self.start = self.GetParam('start') |
| self.num = self.GetParam('num') |
| |
| def GetParam(self, query_param_name, default_value=None, |
| _antitamper_re=None): |
| return self.params.get(query_param_name, default_value) |
| |
| def GetPositiveIntParam(self, query_param_name, default_value=None): |
| """Returns 0 if the user-provided value is less than 0.""" |
| return max(self.GetParam(query_param_name, default_value=default_value), |
| 0) |
| |
| |
| class MonorailRequest(MonorailRequestBase): |
| """A class to hold information parsed from the HTTP request. |
| |
| The goal of MonorailRequest is to do almost all URL path and query string |
| procesing in one place, which makes the servlet code simpler. |
| |
| Attributes: |
| cnxn: connection to the SQL databases. |
| logged_in_user_id: int user ID of the signed-in user, or None. |
| effective_ids: set of signed-in user ID and all their user group IDs. |
| user_pb: User object for the signed in user. |
| project_name: string name of the current project. |
| project_id: int ID of the current projet. |
| viewed_username: string username of the user whose profile is being viewed. |
| can: int "canned query" number to scope the user's search. |
| num: int number of results to show per pagination page. |
| start: int position in result set to show on this pagination page. |
| etc: there are many more, all read-only. |
| """ |
| |
| # pylint: disable=attribute-defined-outside-init |
| def __init__(self, params=None): |
| """Initialize the MonorailRequest object.""" |
| super(MonorailRequest, self).__init__() |
| self.form_overrides = {} |
| if params: |
| self.form_overrides.update(params) |
| self.debug_enabled = False |
| self.use_cached_searches = True |
| |
| self.hotlist_id = None |
| self.hotlist = None |
| self.hotlist_name = None |
| |
| self.viewed_username = None |
| self.viewed_user_auth = authdata.AuthData() |
| |
| def ParseRequest(self, request, services, do_user_lookups=True): |
| """Parse tons of useful info from the given request object. |
| |
| Args: |
| request: webapp2 Request object w/ path and query params. |
| services: connections to backend servers including DB. |
| do_user_lookups: Set to False to disable lookups during testing. |
| """ |
| with self.profiler.Phase('basic parsing'): |
| self.request = request |
| self.current_page_url = request.url |
| self.current_page_url_encoded = urllib.quote_plus(self.current_page_url) |
| |
| # Only accept a hostport from the request that looks valid. |
| if not _HOSTPORT_RE.match(request.host): |
| raise exceptions.InputException( |
| 'request.host looks funny: %r', request.host) |
| |
| logging.info('Request: %s', self.current_page_url) |
| |
| with self.profiler.Phase('path parsing'): |
| (viewed_user_val, self.project_name, |
| self.hotlist_id, self.hotlist_name) = _ParsePathIdentifiers( |
| self.request.path) |
| self.viewed_username = _GetViewedEmail( |
| viewed_user_val, self.cnxn, services) |
| with self.profiler.Phase('qs parsing'): |
| self._ParseQueryParameters() |
| with self.profiler.Phase('overrides parsing'): |
| self._ParseFormOverrides() |
| |
| if not self.project: # It can be already set in unit tests. |
| self._LookupProject(services) |
| if self.project_id and services.config: |
| self.config = services.config.GetProjectConfig(self.cnxn, self.project_id) |
| |
| if do_user_lookups: |
| if self.viewed_username: |
| self._LookupViewedUser(services) |
| self._LookupLoggedInUser(services) |
| # TODO(jrobbins): re-implement HandleLurkerViewingSelf() |
| |
| if not self.hotlist: |
| self._LookupHotlist(services) |
| |
| if self.query is None: |
| self.query = self._CalcDefaultQuery() |
| |
| prod_debug_allowed = self.perms.HasPerm( |
| permissions.VIEW_DEBUG, self.auth.user_id, None) |
| self.debug_enabled = (request.params.get('debug') and |
| (settings.dev_mode or prod_debug_allowed)) |
| # temporary option for perf testing on staging instance. |
| if request.params.get('disable_cache'): |
| if settings.dev_mode or 'staging' in request.host: |
| self.use_cached_searches = False |
| |
| def _CalcDefaultQuery(self): |
| """When URL has no q= param, return the default for members or ''.""" |
| if (self.can == 2 and self.project and self.auth.effective_ids and |
| framework_bizobj.UserIsInProject(self.project, self.auth.effective_ids) |
| and self.config): |
| return self.config.member_default_query |
| else: |
| return '' |
| |
| def _ParseQueryParameters(self): |
| """Parse and convert all the query string params used in any servlet.""" |
| self.start = self.GetPositiveIntParam('start', default_value=0) |
| self.num = self.GetPositiveIntParam('num', default_value=100) |
| # Prevent DoS attacks that try to make us serve really huge result pages. |
| self.num = min(self.num, settings.max_artifact_search_results_per_page) |
| |
| self.invalidation_timestep = self.GetIntParam( |
| 'invalidation_timestep', default_value=0) |
| |
| self.continue_issue_id = self.GetIntParam( |
| 'continue_issue_id', default_value=0) |
| self.redir = self.GetParam('redir') |
| |
| # Search scope, a.k.a., canned query ID |
| # TODO(jrobbins): make configurable |
| self.can = self.GetIntParam( |
| 'can', default_value=tracker_constants.OPEN_ISSUES_CAN) |
| |
| # Search query |
| self.query = self.GetParam('q') |
| |
| # Sorting of search results (needed for result list and flipper) |
| self.sort_spec = self.GetParam( |
| 'sort', default_value='', |
| antitamper_re=framework_constants.SORTSPEC_RE) |
| |
| # Note: This is set later in request handling by ComputeColSpec(). |
| self.col_spec = None |
| |
| # Grouping of search results (needed for result list and flipper) |
| self.group_by_spec = self.GetParam( |
| 'groupby', default_value='', |
| antitamper_re=framework_constants.SORTSPEC_RE) |
| |
| # For issue list and grid mode. |
| self.cursor = self.GetParam('cursor') |
| self.preview = self.GetParam('preview') |
| self.mode = self.GetParam('mode', default_value='list') |
| self.x = self.GetParam('x', default_value='') |
| self.y = self.GetParam('y', default_value='') |
| self.cells = self.GetParam('cells', default_value='ids') |
| |
| # For the dashboard and issue lists included in the dashboard. |
| self.ajah = self.GetParam('ajah') # AJAH = Asychronous Javascript And HTML |
| self.table_title = self.GetParam('table_title') |
| self.panel_id = self.GetIntParam('panel') |
| |
| # For pagination of updates lists |
| self.before = self.GetPositiveIntParam('before') |
| self.after = self.GetPositiveIntParam('after') |
| |
| # For cron tasks and backend calls |
| self.lower_bound = self.GetIntParam('lower_bound') |
| self.upper_bound = self.GetIntParam('upper_bound') |
| self.shard_id = self.GetIntParam('shard_id') |
| |
| # For specifying which objects to operate on |
| self.local_id = self.GetIntParam('id') |
| self.local_id_list = self.GetIntListParam('ids') |
| self.seq = self.GetIntParam('seq') |
| self.aid = self.GetIntParam('aid') |
| self.signed_aid = self.GetParam('signed_aid') |
| self.specified_user_id = self.GetIntParam('u', default_value=0) |
| self.specified_logged_in_user_id = self.GetIntParam( |
| 'logged_in_user_id', default_value=0) |
| self.specified_me_user_id = self.GetIntParam( |
| 'me_user_id', default_value=0) |
| self.specified_project = self.GetParam('project') |
| self.specified_project_id = self.GetIntParam('project_id') |
| self.query_project_names = self.GetListParam('projects', default_value=[]) |
| self.template_name = self.GetParam('template') |
| self.component_path = self.GetParam('component') |
| self.field_name = self.GetParam('field') |
| |
| # For image attachments |
| self.inline = bool(self.GetParam('inline')) |
| self.thumb = bool(self.GetParam('thumb')) |
| |
| # For JS callbacks |
| self.token = self.GetParam('token') |
| self.starred = bool(self.GetIntParam('starred')) |
| |
| # For issue reindexing utility servlet |
| self.auto_submit = self.GetParam('auto_submit') |
| |
| # For issue dependency reranking servlet |
| self.parent_id = self.GetIntParam('parent_id') |
| self.target_id = self.GetIntParam('target_id') |
| self.moved_ids = self.GetIntListParam('moved_ids') |
| self.split_above = self.GetBoolParam('split_above') |
| |
| # For adding issues to hotlists servlet |
| self.hotlist_ids_remove = self.GetIntListParam('hotlist_ids_remove') |
| self.hotlist_ids_add = self.GetIntListParam('hotlist_ids_add') |
| self.issue_refs = self.GetListParam('issue_refs') |
| |
| def _ParseFormOverrides(self): |
| """Support deep linking by allowing the user to set form fields via QS.""" |
| allowed_overrides = { |
| 'template_name': self.GetParam('template_name'), |
| 'initial_summary': self.GetParam('summary'), |
| 'initial_description': (self.GetParam('description') or |
| self.GetParam('comment')), |
| 'initial_comment': self.GetParam('comment'), |
| 'initial_status': self.GetParam('status'), |
| 'initial_owner': self.GetParam('owner'), |
| 'initial_cc': self.GetParam('cc'), |
| 'initial_blocked_on': self.GetParam('blockedon'), |
| 'initial_blocking': self.GetParam('blocking'), |
| 'initial_merge_into': self.GetIntParam('mergeinto'), |
| 'initial_components': self.GetParam('components'), |
| 'initial_hotlists': self.GetParam('hotlists'), |
| |
| # For the people pages |
| 'initial_add_members': self.GetParam('add_members'), |
| 'initially_expanded_form': ezt.boolean(self.GetParam('expand_form')), |
| |
| # For user group admin pages |
| 'initial_name': (self.GetParam('group_name') or |
| self.GetParam('proposed_project_name')), |
| } |
| |
| # Only keep the overrides that were actually provided in the query string. |
| self.form_overrides.update( |
| (k, v) for (k, v) in allowed_overrides.iteritems() |
| if v is not None) |
| |
| def _LookupViewedUser(self, services): |
| """Get information about the viewed user (if any) from the request.""" |
| try: |
| with self.profiler.Phase('get viewed user, if any'): |
| self.viewed_user_auth = authdata.AuthData.FromEmail( |
| self.cnxn, self.viewed_username, services, autocreate=False) |
| except exceptions.NoSuchUserException: |
| logging.info('could not find user %r', self.viewed_username) |
| webapp2.abort(404, 'user not found') |
| |
| if not self.viewed_user_auth.user_id: |
| webapp2.abort(404, 'user not found') |
| |
| def _LookupProject(self, services): |
| """Get information about the current project (if any) from the request. |
| |
| Raises: |
| NoSuchProjectException if there is no project with that name. |
| """ |
| with work_env.WorkEnv( |
| self, services, phase='get current project, if any') as we: |
| if not self.project_name: |
| logging.info('no project_name, so no project') |
| else: |
| self.project = we.GetProjectByName(self.project_name) |
| |
| def _LookupHotlist(self, services): |
| """Get information about the current hotlist (if any) from the request.""" |
| with self.profiler.Phase('get current hotlist, if any'): |
| if self.hotlist_name: |
| hotlist_id_dict = services.features.LookupHotlistIDs( |
| self.cnxn, [self.hotlist_name], [self.viewed_user_auth.user_id]) |
| try: |
| self.hotlist_id = hotlist_id_dict[( |
| self.hotlist_name, self.viewed_user_auth.user_id)] |
| except KeyError: |
| webapp2.abort(404, 'invalid hotlist') |
| |
| if not self.hotlist_id: |
| logging.info('no hotlist_id or bad hotlist_name, so no hotlist') |
| else: |
| self.hotlist = services.features.GetHotlistByID( |
| self.cnxn, self.hotlist_id) |
| if (not self.hotlist) or (self.viewed_user_auth.user_id not in |
| self.hotlist.owner_ids): |
| webapp2.abort(404, 'invalid hotlist') |
| |
| def _LookupLoggedInUser(self, services): |
| """Get information about the signed-in user (if any) from the request.""" |
| with self.profiler.Phase('get user info, if any'): |
| self.auth = authdata.AuthData.FromRequest(self.cnxn, services) |
| self.me_user_id = (self.GetIntParam('me') or |
| self.viewed_user_auth.user_id or self.auth.user_id) |
| |
| self.LookupLoggedInUserPerms() |
| |
| def ComputeColSpec(self, config): |
| """Set col_spec based on param, default in the config, or site default.""" |
| if self.col_spec is not None: |
| return # Already set. |
| default_col_spec = '' |
| if config: |
| default_col_spec = config.default_col_spec |
| |
| col_spec = self.GetParam( |
| 'colspec', default_value=default_col_spec, |
| antitamper_re=framework_constants.COLSPEC_RE) |
| cols_lower = col_spec.lower().split() |
| if self.project and any( |
| hotlist_col in cols_lower for hotlist_col in [ |
| 'rank', 'adder', 'added']): |
| # if the the list is a project list and the 'colspec' is a carry-over |
| # from hotlists, set col_spec to None so it will be set to default in |
| # in the next if statement |
| col_spec = None |
| |
| if not col_spec: |
| # If col spec is still empty then default to the global col spec. |
| col_spec = tracker_constants.DEFAULT_COL_SPEC |
| |
| self.col_spec = ' '.join(ParseColSpec(col_spec)) |
| |
| def PrepareForReentry(self, echo_data): |
| """Expose the results of form processing as if it was a new GET. |
| |
| This method is called only when the user submits a form with invalid |
| information which they are being asked to correct it. Updating the MR |
| object allows the normal servlet get() method to populate the form with |
| the entered values and error messages. |
| |
| Args: |
| echo_data: dict of {page_data_key: value_to_reoffer, ...} that will |
| override whatever HTML form values are nomally shown to the |
| user when they initially view the form. This allows them to |
| fix user input that was not valid. |
| """ |
| self.form_overrides.update(echo_data) |
| |
| def GetParam(self, query_param_name, default_value=None, |
| antitamper_re=None): |
| """Get a query parameter from the URL as a utf8 string.""" |
| value = self.request.params.get(query_param_name) |
| assert value is None or isinstance(value, unicode) |
| using_default = value is None |
| if using_default: |
| value = default_value |
| |
| if antitamper_re and not antitamper_re.match(value): |
| if using_default: |
| logging.error('Default value fails antitamper for %s field: %s', |
| query_param_name, value) |
| else: |
| logging.info('User seems to have tampered with %s field: %s', |
| query_param_name, value) |
| raise exceptions.InputException() |
| |
| return value |
| |
| def GetIntParam(self, query_param_name, default_value=None): |
| """Get an integer param from the URL or default.""" |
| value = self.request.params.get(query_param_name) |
| if value is None or value == '': |
| return default_value |
| |
| try: |
| return int(value) |
| except (TypeError, ValueError): |
| raise exceptions.InputException( |
| 'Invalid value for integer param: %r' % value) |
| |
| def GetPositiveIntParam(self, query_param_name, default_value=None): |
| """Returns 0 if the user-provided value is less than 0.""" |
| return max(self.GetIntParam(query_param_name, default_value=default_value), |
| 0) |
| |
| def GetListParam(self, query_param_name, default_value=None): |
| """Get a list of strings from the URL or default.""" |
| params = self.request.params.get(query_param_name) |
| if params is None: |
| return default_value |
| if not params: |
| return [] |
| return params.split(',') |
| |
| def GetIntListParam(self, query_param_name, default_value=None): |
| """Get a list of ints from the URL or default.""" |
| param_list = self.GetListParam(query_param_name) |
| if param_list is None: |
| return default_value |
| |
| try: |
| return [int(p) for p in param_list] |
| except (TypeError, ValueError): |
| raise exceptions.InputException('Invalid value for integer list param') |
| |
| def GetBoolParam(self, query_param_name, default_value=None): |
| """Get a boolean param from the URL or default.""" |
| value = self.request.params.get(query_param_name) |
| if value is None: |
| return default_value |
| |
| if (not value) or (value.lower() == 'false'): |
| return False |
| return True |
| |
| |
| def _ParsePathIdentifiers(path): |
| """Parse out the workspace being requested (if any). |
| |
| Args: |
| path: A string beginning with the request's path info. |
| |
| Returns: |
| (viewed_user_val, project_name). |
| """ |
| viewed_user_val = None |
| project_name = None |
| hotlist_id = None |
| hotlist_name = None |
| |
| # Strip off any query params |
| split_path = path.lstrip('/').split('?')[0].split('/') |
| if len(split_path) >= 2: |
| if split_path[0] == 'p': |
| project_name = split_path[1] |
| if split_path[0] == 'u': |
| viewed_user_val = urllib.unquote(split_path[1]) |
| if len(split_path) >= 4 and split_path[2] == 'hotlists': |
| try: |
| hotlist_id = int( |
| urllib.unquote(split_path[3].split('.')[0])) |
| except ValueError: |
| raw_last_path = (split_path[3][:-3] if |
| split_path[3].endswith('.do') else split_path[3]) |
| last_path = urllib.unquote(raw_last_path) |
| match = framework_bizobj.RE_HOTLIST_NAME.match( |
| last_path) |
| if not match: |
| raise exceptions.InputException( |
| 'Could not parse hotlist id or name') |
| else: |
| hotlist_name = last_path.lower() |
| |
| if split_path[0] == 'g': |
| viewed_user_val = urllib.unquote(split_path[1]) |
| |
| return viewed_user_val, project_name, hotlist_id, hotlist_name |
| |
| |
| def _GetViewedEmail(viewed_user_val, cnxn, services): |
| """Returns the viewed user's email. |
| |
| Args: |
| viewed_user_val: Could be either int (user_id) or str (email). |
| cnxn: connection to the SQL database. |
| services: Interface to all persistence storage backends. |
| |
| Returns: |
| viewed_email |
| """ |
| if not viewed_user_val: |
| return None |
| |
| try: |
| viewed_userid = int(viewed_user_val) |
| viewed_email = services.user.LookupUserEmail(cnxn, viewed_userid) |
| if not viewed_email: |
| logging.info('userID %s not found', viewed_userid) |
| webapp2.abort(404, 'user not found') |
| except ValueError: |
| viewed_email = viewed_user_val |
| |
| return viewed_email |
| |
| |
| def ParseColSpec(col_spec): |
| """Split a string column spec into a list of column names. |
| |
| Args: |
| col_spec: a unicode string containing a list of labels. |
| |
| Returns: |
| A list of the extracted labels. Non-alphanumeric |
| characters other than the period will be stripped from the text. |
| """ |
| return framework_constants.COLSPEC_COL_RE.findall(col_spec) |
