diff --git a/swh/web/api/apiresponse.py b/swh/web/api/apiresponse.py index e1c212ae5..e6e18b1fc 100644 --- a/swh/web/api/apiresponse.py +++ b/swh/web/api/apiresponse.py @@ -1,180 +1,180 @@ # Copyright (C) 2017-2018 The Software Heritage developers # See the AUTHORS file at the top-level directory of this distribution # License: GNU Affero General Public License version 3, or any later version # See top-level LICENSE file for more information import json from rest_framework.response import Response from swh.storage.exc import StorageDBError, StorageAPIError from swh.web.common.exc import NotFoundExc, ForbiddenExc from swh.web.common.utils import shorten_path, gen_path_info from swh.web.api import utils def compute_link_header(rv, options): """Add Link header in returned value results. Args: rv (dict): dictionary with keys: - headers: potential headers with 'link-next' and 'link-prev' keys - results: containing the result to return options (dict): the initial dict to update with result if any Returns: dict: dictionary with optional keys 'link-next' and 'link-prev' """ link_headers = [] if 'headers' not in rv: return {} rv_headers = rv['headers'] if 'link-next' in rv_headers: link_headers.append('<%s>; rel="next"' % ( rv_headers['link-next'])) if 'link-prev' in rv_headers: link_headers.append('<%s>; rel="previous"' % ( rv_headers['link-prev'])) if link_headers: link_header_str = ','.join(link_headers) headers = options.get('headers', {}) headers.update({ 'Link': link_header_str }) return headers return {} def filter_by_fields(request, data): """Extract a request parameter 'fields' if it exists to permit the filtering on he data dict's keys. If such field is not provided, returns the data as is. """ fields = request.query_params.get('fields') if fields: fields = set(fields.split(',')) data = utils.filter_field_keys(data, fields) return data def transform(rv): """Transform an eventual returned value with multiple layer of information with only what's necessary. If the returned value rv contains the 'results' key, this is the associated value which is returned. Otherwise, return the initial dict without the potential 'headers' key. """ if 'results' in rv: return rv['results'] if 'headers' in rv: rv.pop('headers') return rv def make_api_response(request, data, doc_data={}, options={}): """Generates an API response based on the requested mimetype. Args: request: a DRF Request object data: raw data to return in the API response doc_data: documentation data for HTML response options: optionnal data that can be used to generate the response Returns: a DRF Response a object """ if data: options['headers'] = compute_link_header(data, options) data = transform(data) data = filter_by_fields(request, data) doc_env = doc_data headers = {} if 'headers' in options: doc_env['headers_data'] = options['headers'] headers = options['headers'] # get request status code doc_env['status_code'] = options.get('status', 200) response_args = {'status': doc_env['status_code'], 'headers': headers, 'content_type': request.accepted_media_type} # when requesting HTML, typically when browsing the API through its # documented views, we need to enrich the input data with documentation # related ones and inform DRF that we request HTML template rendering if request.accepted_media_type == 'text/html': if data: data = json.dumps(data, sort_keys=True, indent=4, separators=(',', ': ')) doc_env['response_data'] = data doc_env['request'] = { 'path': request.path, 'method': request.method, - 'absolute_uri': request.build_absolute_uri() + 'absolute_uri': request.build_absolute_uri(), } doc_env['heading'] = shorten_path(str(request.path)) if 'route' in doc_env: doc_env['endpoint_path'] = gen_path_info(doc_env['route']) response_args['data'] = doc_env response_args['template_name'] = 'apidoc.html' # otherwise simply return the raw data and let DRF picks # the correct renderer (JSON or YAML) else: response_args['data'] = data return Response(**response_args) def error_response(request, error, doc_data): """Private function to create a custom error response. Args: request: a DRF Request object error: the exception that caused the error doc_data: documentation data for HTML response """ error_code = 400 if isinstance(error, NotFoundExc): error_code = 404 elif isinstance(error, ForbiddenExc): error_code = 403 elif isinstance(error, StorageDBError): error_code = 503 elif isinstance(error, StorageAPIError): error_code = 503 error_opts = {'status': error_code} error_data = { 'exception': error.__class__.__name__, 'reason': str(error), } return make_api_response(request, error_data, doc_data, options=error_opts) diff --git a/swh/web/common/utils.py b/swh/web/common/utils.py index ad6b29d83..bdc372280 100644 --- a/swh/web/common/utils.py +++ b/swh/web/common/utils.py @@ -1,374 +1,374 @@ # Copyright (C) 2017-2018 The Software Heritage developers # See the AUTHORS file at the top-level directory of this distribution # License: GNU Affero General Public License version 3, or any later version # See top-level LICENSE file for more information import docutils.parsers.rst import docutils.utils import re from datetime import datetime, timezone from dateutil import parser as date_parser from dateutil import tz from django.core.cache import cache from django.core import urlresolvers from django.http import QueryDict from swh.model.exceptions import ValidationError from swh.model.identifiers import ( persistent_identifier, parse_persistent_identifier, CONTENT, DIRECTORY, RELEASE, REVISION, SNAPSHOT ) from swh.web.common import service from swh.web.common.exc import BadInputExc def reverse(viewname, args=None, kwargs=None, query_params=None, current_app=None, urlconf=None): """An override of django reverse function supporting query parameters. Args: viewname: the name of the django view from which to compute a url args: list of url arguments ordered according to their position it kwargs: dictionary of url arguments indexed by their names query_params: dictionary of query parameters to append to the reversed url current_app: the name of the django app tighted to the view urlconf: url configuration module Returns: The url of the requested view with processed arguments and query parameters """ if kwargs: kwargs = {k: v for k, v in kwargs.items() if v is not None} url = urlresolvers.reverse( viewname, urlconf=urlconf, args=args, kwargs=kwargs, current_app=current_app) if query_params: query_params = {k: v for k, v in query_params.items() if v is not None} if query_params and len(query_params) > 0: query_dict = QueryDict('', mutable=True) for k in sorted(query_params.keys()): query_dict[k] = query_params[k] - url += ('?' + query_dict.urlencode(safe='/')) + url += ('?' + query_dict.urlencode(safe='/;:')) return url def fmap(f, data): """Map f to data at each level. This must keep the origin data structure type: - map -> map - dict -> dict - list -> list - None -> None Args: f: function that expects one argument. data: data to traverse to apply the f function. list, map, dict or bare value. Returns: The same data-structure with modified values by the f function. """ if data is None: return data if isinstance(data, map): return map(lambda y: fmap(f, y), (x for x in data)) if isinstance(data, list): return [fmap(f, x) for x in data] if isinstance(data, dict): return {k: fmap(f, v) for (k, v) in data.items()} return f(data) def datetime_to_utc(date): """Returns datetime in UTC without timezone info Args: date (datetime.datetime): input datetime with timezone info Returns: datetime.datime: datetime in UTC without timezone info """ if date.tzinfo: return date.astimezone(tz.gettz('UTC')).replace(tzinfo=timezone.utc) else: return date def parse_timestamp(timestamp): """Given a time or timestamp (as string), parse the result as UTC datetime. Returns: a timezone-aware datetime representing the parsed value. None if the parsing fails. Samples: - 2016-01-12 - 2016-01-12T09:19:12+0100 - Today is January 1, 2047 at 8:21:00AM - 1452591542 """ if not timestamp: return None try: date = date_parser.parse(timestamp, ignoretz=False, fuzzy=True) return datetime_to_utc(date) except Exception: try: return datetime.utcfromtimestamp(float(timestamp)).replace( tzinfo=timezone.utc) except (ValueError, OverflowError) as e: raise BadInputExc(e) def shorten_path(path): """Shorten the given path: for each hash present, only return the first 8 characters followed by an ellipsis""" sha256_re = r'([0-9a-f]{8})[0-9a-z]{56}' sha1_re = r'([0-9a-f]{8})[0-9a-f]{32}' ret = re.sub(sha256_re, r'\1...', path) return re.sub(sha1_re, r'\1...', ret) def format_utc_iso_date(iso_date, fmt='%d %B %Y, %H:%M UTC'): """Turns a string reprensation of an ISO 8601 date string to UTC and format it into a more human readable one. For instance, from the following input string: '2017-05-04T13:27:13+02:00' the following one is returned: '04 May 2017, 11:27 UTC'. Custom format string may also be provided as parameter Args: iso_date (str): a string representation of an ISO 8601 date fmt (str): optional date formatting string Returns: A formatted string representation of the input iso date """ if not iso_date: return iso_date date = parse_timestamp(iso_date) return date.strftime(fmt) def gen_path_info(path): """Function to generate path data navigation for use with a breadcrumb in the swh web ui. For instance, from a path /folder1/folder2/folder3, it returns the following list:: [{'name': 'folder1', 'path': 'folder1'}, {'name': 'folder2', 'path': 'folder1/folder2'}, {'name': 'folder3', 'path': 'folder1/folder2/folder3'}] Args: path: a filesystem path Returns: A list of path data for navigation as illustrated above. """ path_info = [] if path: sub_paths = path.strip('/').split('/') path_from_root = '' for p in sub_paths: path_from_root += '/' + p path_info.append({'name': p, 'path': path_from_root.strip('/')}) return path_info def get_origin_visits(origin_info): """Function that returns the list of visits for a swh origin. That list is put in cache in order to speedup the navigation in the swh web browse ui. Args: origin_id (int): the id of the swh origin to fetch visits from Returns: A list of dict describing the origin visits:: [{'date': , 'origin': , 'status': <'full' | 'partial'>, 'visit': }, ... ] Raises: NotFoundExc if the origin is not found """ cache_entry_id = 'origin_%s_visits' % origin_info['id'] cache_entry = cache.get(cache_entry_id) if cache_entry: return cache_entry origin_visits = [] per_page = service.MAX_LIMIT last_visit = None while 1: visits = list(service.lookup_origin_visits(origin_info['id'], last_visit=last_visit, per_page=per_page)) origin_visits += visits if len(visits) < per_page: break else: if not last_visit: last_visit = per_page else: last_visit += per_page def _visit_sort_key(visit): ts = parse_timestamp(visit['date']).timestamp() return ts + (float(visit['visit']) / 10e3) for v in origin_visits: if 'metadata' in v: del v['metadata'] origin_visits = [dict(t) for t in set([tuple(d.items()) for d in origin_visits])] origin_visits = sorted(origin_visits, key=lambda v: _visit_sort_key(v)) cache.set(cache_entry_id, origin_visits) return origin_visits def get_swh_persistent_id(object_type, object_id, scheme_version=1): """ Returns the persistent identifier for a swh object based on: * the object type * the object id * the swh identifiers scheme version Args: object_type (str): the swh object type (content/directory/release/revision/snapshot) object_id (str): the swh object id (hexadecimal representation of its hash value) scheme_version (int): the scheme version of the swh persistent identifiers Returns: str: the swh object persistent identifier Raises: BadInputExc if the provided parameters do not enable to generate a valid identifier """ try: swh_id = persistent_identifier(object_type, object_id, scheme_version) except ValidationError as e: raise BadInputExc('Invalid object (%s) for swh persistent id. %s' % (object_id, e)) else: return swh_id def resolve_swh_persistent_id(swh_id, query_params=None): """ Try to resolve a SWH persistent id into an url for browsing the pointed object. Args: swh_id (str): a SWH persistent identifier query_params (django.http.QueryDict): optional dict filled with query parameters to append to the browse url Returns: dict: a dict with the following keys: * **swh_id_parsed (swh.model.identifiers.PersistentId)**: the parsed identifier * **browse_url (str)**: the url for browsing the pointed object Raises: BadInputExc: if the provided identifier can not be parsed """ # noqa try: swh_id_parsed = parse_persistent_identifier(swh_id) object_type = swh_id_parsed.object_type object_id = swh_id_parsed.object_id browse_url = None if not query_params: query_params = QueryDict('', mutable=True) if 'origin' in swh_id_parsed.metadata: query_params['origin'] = swh_id_parsed.metadata['origin'] if object_type == CONTENT: query_string = 'sha1_git:' + object_id fragment = '' if 'lines' in swh_id_parsed.metadata: lines = swh_id_parsed.metadata['lines'].split('-') fragment += '#L' + lines[0] if len(lines) > 1: fragment += '-L' + lines[1] browse_url = reverse('browse-content', kwargs={'query_string': query_string}, query_params=query_params) + fragment elif object_type == DIRECTORY: browse_url = reverse('browse-directory', kwargs={'sha1_git': object_id}, query_params=query_params) elif object_type == RELEASE: browse_url = reverse('browse-release', kwargs={'sha1_git': object_id}, query_params=query_params) elif object_type == REVISION: browse_url = reverse('browse-revision', kwargs={'sha1_git': object_id}, query_params=query_params) elif object_type == SNAPSHOT: browse_url = reverse('browse-snapshot', kwargs={'snapshot_id': object_id}, query_params=query_params) except ValidationError as ve: raise BadInputExc('Error when parsing identifier. %s' % ' '.join(ve.messages)) else: return {'swh_id_parsed': swh_id_parsed, 'browse_url': browse_url} def parse_rst(text, report_level=2): """ Parse a reStructuredText string with docutils. Args: text (str): string with reStructuredText markups in it report_level (int): level of docutils report messages to print (1 info 2 warning 3 error 4 severe 5 none) Returns: docutils.nodes.document: a parsed docutils document """ parser = docutils.parsers.rst.Parser() components = (docutils.parsers.rst.Parser,) settings = docutils.frontend.OptionParser( components=components).get_default_values() settings.report_level = report_level document = docutils.utils.new_document('rst-doc', settings=settings) parser.parse(text, document) return document diff --git a/swh/web/templates/apidoc.html b/swh/web/templates/apidoc.html index f79b71de1..598319502 100644 --- a/swh/web/templates/apidoc.html +++ b/swh/web/templates/apidoc.html @@ -1,182 +1,182 @@ {% extends "layout.html" %} {% comment %} Copyright (C) 2015-2018 The Software Heritage developers See the AUTHORS file at the top-level directory of this distribution License: GNU Affero General Public License version 3, or any later version See top-level LICENSE file for more information {% endcomment %} {% load swh_templatetags %} {% load render_bundle from webpack_loader %} {% block title %}{{ heading }} – Software Heritage API {% endblock %} {% block navbar-content %} {% endblock %} {% block content %} {% if description %}

Description

{{ description | safe_docstring_display | safe }}
{% endif %} {% if response_data %}

Request

-
{{ request.method }} {{ request.absolute_uri }}
+
{{ request.method }} {{ request.path }}

Response

{% if status_code != 200 %}
Status Code
{{ status_code }}
{% endif %} {% if headers_data %}
Headers
{% for header_name, header_value in headers_data.items %}
{{ header_name }} {{ header_value | urlize_header_links | safe }}
{% endfor %} {% endif %}
Body
{{ response_data | urlize_links_and_mails | safe }}
{% endif %}
{% if urls and urls|length > 0 %}
{% for url in urls %} {% endfor %}
URL Allowed Methods
{{ url.rule | safe_docstring_display | safe }} {{ url.methods | dictsort:0 | join:', ' }}

{% endif %} {% if args and args|length > 0 %}

Arguments

{% for arg in args %}
{{ arg.name }} ({{ arg.type }})
{{ arg.doc | safe_docstring_display | safe }}
{% endfor %}

{% endif %} {% if params and params|length > 0 %}

Query parameters

{% for param in params %}
{{ param.name }} ({{ param.type }})
{{ param.doc | safe_docstring_display | safe }}
{% endfor %}

{% endif %} {% if reqheaders and reqheaders|length > 0 %}

Request headers

{% for header in reqheaders %}
{{ header.name }}
{{ header.doc | safe_docstring_display | safe }}
{% endfor %}

{% endif %} {% if resheaders and resheaders|length > 0 %}

Response headers

{% for header in resheaders %}
{{ header.name }}
{{ header.doc | safe_docstring_display | safe }}
{% endfor %}

{% endif %} {% if return_type %}

Returns

{{ return_type }}

{% if return_type == 'array' %} an array of objects containing the following keys: {% elif return_type == 'octet stream' %} the raw data as an octet stream {% else %} an object containing the following keys: {% endif %} {{ returns_list | safe_docstring_display | safe }}


{% endif %} {% if status_codes and status_codes|length > 0 %}

HTTP status codes

{% for status in status_codes %}
{{ status.code }}
{{ status.doc | safe_docstring_display | safe }}
{% endfor %}

{% endif %} {% if examples and examples|length > 0 %}

Examples

{% for example in examples %}
{{ example }}
{% endfor %}
{% endif %} {% endblock %}