# -*- encoding: utf-8 -*-
+import os.path
+import logging
__author__= "Łukasz Rekucki"
__date__ = "$2009-09-25 15:49:50$"
from piston.handler import BaseHandler, AnonymousBaseHandler
-
-import settings
-import librarian
-import api.forms as forms
+import re
from datetime import date
from django.core.urlresolvers import reverse
+from django.utils import simplejson as json
+from django.db import IntegrityError
-from wlrepo import MercurialLibrary, RevisionNotFound, DocumentAlreadyExists
-from librarian import dcparser
+import librarian
+import librarian.html
+from librarian import dcparser, parser
+
+from wlrepo import *
+from explorer.models import PullRequest, GalleryForDocument
+# internal imports
+import api.forms as forms
import api.response as response
-from api.response import validate_form
+from api.utils import validate_form, hglibrary, natural_order
+from api.models import PartCache
+
+#
+import settings
+
+
+log = logging.getLogger('platforma.api')
+
#
# Document List Handlers
#
+# TODO: security check
class BasicLibraryHandler(AnonymousBaseHandler):
allowed_methods = ('GET',)
- def read(self, request):
- """Return the list of documents."""
- lib = MercurialLibrary(path=settings.REPOSITORY_PATH)
-
+ @hglibrary
+ def read(self, request, lib):
+ """Return the list of documents."""
document_list = [{
'url': reverse('document_view', args=[docid]),
'name': docid } for docid in lib.documents() ]
return {'documents' : document_list}
+
+#
+# This handler controlls the document collection
+#
class LibraryHandler(BaseHandler):
allowed_methods = ('GET', 'POST')
anonymous = BasicLibraryHandler
- def read(self, request):
+
+ @hglibrary
+ def read(self, request, lib):
"""Return the list of documents."""
- lib = MercurialLibrary(path=settings.REPOSITORY_PATH)
- document_list = [{
- 'url': reverse('document_view', args=[docid]),
- 'name': docid } for docid in lib.documents() ]
+ documents = {}
+
+ for docid in lib.documents():
+ documents[docid] = {
+ 'url': reverse('document_view', args=[docid]),
+ 'name': docid,
+ 'parts': []
+ }
+
+ parts = PartCache.objects.defer('part_id')\
+ .values_list('part_id', 'document_id').distinct()
+
+ document_tree = dict(documents)
- return {'documents' : document_list }
+ for part, docid in parts:
+ # this way, we won't display broken links
+ if not documents.has_key(part):
+ log.info("NOT FOUND: %s", part)
+ continue
+
+ parent = documents[docid]
+ child = documents[part]
+
+ # not top-level anymore
+ document_tree.pop(part)
+ parent['parts'].append(child)
+
+ for doc in documents.itervalues():
+ doc['parts'].sort(key=natural_order(lambda d: d['name']))
+
+ return {'documents': sorted(document_tree.itervalues(),
+ key=natural_order(lambda d: d['name']) ) }
@validate_form(forms.DocumentUploadForm, 'POST')
- def create(self, request, form):
- """Create a new document."""
- lib = MercurialLibrary(path=settings.REPOSITORY_PATH)
+ @hglibrary
+ def create(self, request, form, lib):
+ """Create a new document."""
if form.cleaned_data['ocr_data']:
- data = form.cleaned_data['ocr_data'].encode('utf-8')
+ data = form.cleaned_data['ocr_data']
else:
- data = request.FILES['ocr'].read().decode('utf-8')
+ data = request.FILES['ocr_file'].read().decode('utf-8')
+
+ if data is None:
+ return response.BadRequest().django_response('You must pass ocr_data or ocr_file.')
if form.cleaned_data['generate_dc']:
data = librarian.wrap_text(data, unicode(date.today()))
docid = form.cleaned_data['bookname']
- try:
- doc = lib.document_create(docid)
- doc.quickwrite('xml', data, '$AUTO$ XML data uploaded.',
- user=request.user.username)
-
- url = reverse('document_view', args=[doc.id])
-
- return response.EntityCreated().django_response(\
- body = {
- 'url': url,
- 'name': doc.id,
- 'revision': doc.revision },
- url = url )
-
+ try:
+ lock = lib.lock()
+ try:
+ log.info("DOCID %s", docid)
+ doc = lib.document_create(docid)
+ # document created, but no content yet
+
+ try:
+ doc = doc.quickwrite('xml', data.encode('utf-8'),
+ '$AUTO$ XML data uploaded.', user=request.user.username)
+ except Exception,e:
+ import traceback
+ # rollback branch creation
+ lib._rollback()
+ raise LibraryException(traceback.format_exc())
+
+ url = reverse('document_view', args=[doc.id])
+
+ return response.EntityCreated().django_response(\
+ body = {
+ 'url': url,
+ 'name': doc.id,
+ 'revision': doc.revision },
+ url = url )
+ finally:
+ lock.release()
+ except LibraryException, e:
+ import traceback
+ return response.InternalError().django_response({
+ "reason": traceback.format_exc()
+ })
except DocumentAlreadyExists:
# Document is already there
- return response.EntityConflict().django_response(\
- {"reason": "Document %s already exists." % docid})
+ return response.EntityConflict().django_response({
+ "reason": "already-exists",
+ "message": "Document already exists." % docid
+ })
#
# Document Handlers
class BasicDocumentHandler(AnonymousBaseHandler):
allowed_methods = ('GET',)
- def read(self, request, docid):
- try:
- lib = MercurialLibrary(path=settings.REPOSITORY_PATH)
+ @hglibrary
+ def read(self, request, docid, lib):
+ try:
doc = lib.document(docid)
except RevisionNotFound:
return rc.NOT_FOUND
result = {
'name': doc.id,
+ 'html_url': reverse('dochtml_view', args=[doc.id]),
'text_url': reverse('doctext_view', args=[doc.id]),
- 'dc_url': reverse('docdc_view', docid=doc.id),
+ 'dc_url': reverse('docdc_view', args=[doc.id]),
'public_revision': doc.revision,
}
allowed_methods = ('GET', 'PUT')
anonymous = BasicDocumentHandler
- def read(self, request, docid):
- """Read document's meta data"""
- lib = MercurialLibrary(path=settings.REPOSITORY_PATH)
-
+ @hglibrary
+ def read(self, request, docid, lib):
+ """Read document's meta data"""
+ log.info(u"Read %s (%s)" % (docid, type(docid)) )
try:
doc = lib.document(docid)
udoc = doc.take(request.user.username)
- except RevisionNotFound:
- return request.EnityNotFound().django_response()
+ except RevisionNotFound, e:
+ return response.EntityNotFound().django_response({
+ 'exception': type(e), 'message': e.message,
+ 'docid': docid })
# is_shared = udoc.ancestorof(doc)
# is_uptodate = is_shared or shared.ancestorof(document)
result = {
'name': udoc.id,
+ 'html_url': reverse('dochtml_view', args=[udoc.id]),
'text_url': reverse('doctext_view', args=[udoc.id]),
'dc_url': reverse('docdc_view', args=[udoc.id]),
- 'parts_url': reverse('docparts_view', args=[udoc.id]),
+ 'gallery_url': reverse('docgallery_view', args=[udoc.id]),
+ 'merge_url': reverse('docmerge_view', args=[udoc.id]),
'user_revision': udoc.revision,
- 'public_revision': doc.revision,
+ 'user_timestamp': udoc.revision.timestamp,
+ 'public_revision': doc.revision,
+ 'public_timestamp': doc.revision.timestamp,
}
return result
+ @hglibrary
+ def update(self, request, docid, lib):
+ """Update information about the document, like display not"""
+ return
+#
+#
+#
+class DocumentHTMLHandler(BaseHandler):
+ allowed_methods = ('GET')
+
+ @hglibrary
+ def read(self, request, docid, lib, stylesheet='partial'):
+ """Read document as html text"""
+ try:
+ revision = request.GET.get('revision', 'latest')
+
+ if revision == 'latest':
+ document = lib.document(docid)
+ else:
+ document = lib.document_for_rev(revision)
+
+ if document.id != docid:
+ return response.BadRequest().django_response({'reason': 'name-mismatch',
+ 'message': 'Provided revision refers, to document "%s", but provided "%s"' % (document.id, docid) })
+
+ return librarian.html.transform(document.data('xml'), is_file=False, \
+ parse_dublincore=False, stylesheet=stylesheet,\
+ options={
+ "with-paths": 'boolean(1)',
+ })
+
+ except (EntryNotFound, RevisionNotFound), e:
+ return response.EntityNotFound().django_response({
+ 'reason': 'not-found', 'message': e.message})
+ except librarian.ParseError, e:
+ return response.InternalError().django_response({
+ 'reason': 'xml-parse-error', 'message': e.message })
+
+#
+# Image Gallery
+#
+
+class DocumentGalleryHandler(BaseHandler):
+ allowed_methods = ('GET')
+
+
+ def read(self, request, docid):
+ """Read meta-data about scans for gallery of this document."""
+ galleries = []
+ from urllib import quote
+
+ for assoc in GalleryForDocument.objects.filter(document=docid):
+ dirpath = os.path.join(settings.MEDIA_ROOT, assoc.subpath)
+
+ if not os.path.isdir(dirpath):
+ log.warn(u"[WARNING]: missing gallery %s", dirpath)
+ continue
+
+ gallery = {'name': assoc.name, 'pages': []}
+
+ for file in os.listdir(dirpath):
+ if not isinstance(file, unicode):
+ log.warn(u"File %r is gallery %r is not unicode. Ommiting."\
+ % (file, dirpath) )
+ continue
+
+ name, ext = os.path.splitext(os.path.basename(file))
+
+ if ext.lower() not in [u'.png', u'.jpeg', u'.jpg']:
+ log.info(u"Ignoring: %s %s", name, ext)
+ continue
+
+ url = settings.MEDIA_URL + assoc.subpath + u'/' + file;
+ gallery['pages'].append( quote(url.encode('utf-8')) )
+
+ gallery['pages'].sort()
+ galleries.append(gallery)
+
+ return galleries
+
#
# Document Text View
#
+
+XINCLUDE_REGEXP = r"""<(?:\w+:)?include\s+[^>]*?href=("|')wlrepo://(?P<link>[^\1]+?)\1\s*[^>]*?>"""
+#
+#
+#
+
class DocumentTextHandler(BaseHandler):
- allowed_methods = ('GET', 'PUT')
+ allowed_methods = ('GET', 'POST')
- @validate_form(forms.DocumentEntryRequest)
- def read(self, request, form, docid):
- """Read document as raw text"""
- lib = MercurialLibrary(path=settings.REPOSITORY_PATH)
+ @hglibrary
+ def read(self, request, docid, lib):
+ """Read document as raw text"""
+ revision = request.GET.get('revision', 'latest')
+ part = request.GET.get('part', False)
try:
- if request.GET['revision'] == 'latest':
+ if revision == 'latest':
document = lib.document(docid)
else:
- document = lib.document_for_rev(request.GET['revision'])
+ document = lib.document_for_rev(revision)
+
+ if document.id != docid:
+ return response.BadRequest().django_response({'reason': 'name-mismatch',
+ 'message': 'Provided revision is not valid for this document'})
# TODO: some finer-grained access control
- return document.data('xml')
- except RevisionNotFound:
- return response.EntityNotFound().django_response()
-
- def update(self, request, docid):
- lib = MercurialLibrary(path=settings.REPOSITORY_PATH)
- try:
- data = request.PUT['contents']
- prev = request.PUT['revision']
-
- if request.PUT.has_key('message'):
- msg = u"$USER$ " + request.PUT['message']
+ if part is False:
+ # we're done :)
+ return document.data('xml')
else:
- msg = u"$AUTO$ XML content update."
+ xdoc = parser.WLDocument.from_string(document.data('xml'),\
+ parse_dublincore=False)
+ ptext = xdoc.part_as_text(part)
+
+ if ptext is None:
+ return response.EntityNotFound().django_response({
+ 'reason': 'no-part-in-document'
+ })
+
+ return ptext
+ except librarian.ParseError:
+ return response.EntityNotFound().django_response({
+ 'reason': 'invalid-document-state',
+ 'exception': type(e), 'message': e.message
+ })
+ except (EntryNotFound, RevisionNotFound), e:
+ return response.EntityNotFound().django_response({
+ 'reason': 'not-found',
+ 'exception': type(e), 'message': e.message
+ })
+
+ @hglibrary
+ def create(self, request, docid, lib):
+ try:
+ revision = request.POST['revision']
current = lib.document(docid, request.user.username)
- orig = lib.document_for_rev(prev)
+ orig = lib.document_for_rev(revision)
if current != orig:
return response.EntityConflict().django_response({
"provided_revision": orig.revision,
"latest_revision": current.revision })
- ndoc = doc.quickwrite('xml', data, msg)
+ if request.POST.has_key('message'):
+ msg = u"$USER$ " + request.POST['message']
+ else:
+ msg = u"$AUTO$ XML content update."
+
+ if request.POST.has_key('contents'):
+ data = request.POST['contents']
+ else:
+ if not request.POST.has_key('chunks'):
+ # bad request
+ return response.BadRequest().django_response({'reason': 'invalid-arguments',
+ 'message': 'No contents nor chunks specified.'})
+
+ # TODO: validate
+ parts = json.loads(request.POST['chunks'])
+ xdoc = parser.WLDocument.from_string(current.data('xml'))
+
+ errors = xdoc.merge_chunks(parts)
+
+ if len(errors):
+ return response.EntityConflict().django_response({
+ "reason": "invalid-chunks",
+ "message": "Unable to merge following parts into the document: %s " % ",".join(errors)
+ })
+
+ data = xdoc.serialize()
+
+ # try to find any Xinclude tags
+ includes = [m.groupdict()['link'] for m in (re.finditer(\
+ XINCLUDE_REGEXP, data, flags=re.UNICODE) or []) ]
+
+ log.info("INCLUDES: %s", includes)
+
+ # TODO: provide useful routines to make this simpler
+ def xml_update_action(lib, resolve):
+ try:
+ f = lib._fileopen(resolve('parts'), 'r')
+ stored_includes = json.loads(f.read())
+ f.close()
+ except:
+ stored_includes = []
+
+ if stored_includes != includes:
+ f = lib._fileopen(resolve('parts'), 'w+')
+ f.write(json.dumps(includes))
+ f.close()
+
+ lib._fileadd(resolve('parts'))
+
+ # update the parts cache
+ PartCache.update_cache(docid, current.owner,\
+ stored_includes, includes)
+
+ # now that the parts are ok, write xml
+ f = lib._fileopen(resolve('xml'), 'w+')
+ f.write(data.encode('utf-8'))
+ f.close()
+
+ ndoc = None
+ ndoc = current.invoke_and_commit(\
+ xml_update_action, lambda d: (msg, current.owner) )
+
+ try:
+ # return the new revision number
+ return response.SuccessAllOk().django_response({
+ "document": ndoc.id,
+ "subview": "xml",
+ "previous_revision": current.revision,
+ "revision": ndoc.revision,
+ 'timestamp': ndoc.revision.timestamp,
+ "url": reverse("doctext_view", args=[ndoc.id])
+ })
+ except Exception, e:
+ if ndoc: lib._rollback()
+ raise e
+ except RevisionNotFound, e:
+ return response.EntityNotFound(mimetype="text/plain").\
+ django_response(e.message)
- # return the new revision number
- return {
- "document": ndoc.id,
- "subview": "xml",
- "previous_revision": prev,
- "updated_revision": ndoc.revision
- }
-
- except (RevisionNotFound, KeyError):
- return response.EntityNotFound().django_response()
#
# Dublin Core handlers
# @requires librarian
#
class DocumentDublinCoreHandler(BaseHandler):
- allowed_methods = ('GET', 'PUT')
+ allowed_methods = ('GET', 'POST')
- @validate_form(forms.DocumentEntryRequest)
- def read(self, request, docid):
- """Read document as raw text"""
- lib = MercurialLibrary(path=settings.REPOSITORY_PATH)
+ @hglibrary
+ def read(self, request, docid, lib):
+ """Read document as raw text"""
try:
- if request.GET['revision'] == 'latest':
- document = lib.document(docid)
+ revision = request.GET.get('revision', 'latest')
+
+ if revision == 'latest':
+ doc = lib.document(docid)
else:
- document = lib.document_for_rev(request.GET['revision'])
+ doc = lib.document_for_rev(revision)
+
+
+ if document.id != docid:
+ return response.BadRequest().django_response({'reason': 'name-mismatch',
+ 'message': 'Provided revision is not valid for this document'})
bookinfo = dcparser.BookInfo.from_string(doc.data('xml'))
return bookinfo.serialize()
- except RevisionNotFound:
- return response.EntityNotFound().django_response()
+ except (EntryNotFound, RevisionNotFound), e:
+ return response.EntityNotFound().django_response({
+ 'exception': type(e), 'message': e.message})
- def update(self, request, docid):
- lib = MercurialLibrary(path=settings.REPOSITORY_PATH)
+ @hglibrary
+ def create(self, request, docid, lib):
try:
- bi_json = request.PUT['contents']
- prev = request.PUT['revision']
- if request.PUT.has_key('message'):
+ bi_json = request.POST['contents']
+ revision = request.POST['revision']
+
+ if request.POST.has_key('message'):
msg = u"$USER$ " + request.PUT['message']
else:
msg = u"$AUTO$ Dublin core update."
current = lib.document(docid, request.user.username)
- orig = lib.document_for_rev(prev)
+ orig = lib.document_for_rev(revision)
if current != orig:
return response.EntityConflict().django_response({
document.serialize().encode('utf-8'),\
message=msg, user=request.user.username)
- return {
- "document": ndoc.id,
- "subview": "xml",
- "previous_revision": prev,
- "updated_revision": ndoc.revision
- }
- except (RevisionNotFound, KeyError):
+ try:
+ # return the new revision number
+ return {
+ "document": ndoc.id,
+ "subview": "dc",
+ "previous_revision": current.revision,
+ "revision": ndoc.revision,
+ 'timestamp': ndoc.revision.timestamp,
+ "url": reverse("docdc_view", args=[ndoc.id])
+ }
+ except Exception, e:
+ if ndoc: lib._rollback()
+ raise e
+ except RevisionNotFound:
return response.EntityNotFound().django_response()
+
+class MergeHandler(BaseHandler):
+ allowed_methods = ('POST',)
+
+ @validate_form(forms.MergeRequestForm, 'POST')
+ @hglibrary
+ def create(self, request, form, docid, lib):
+ """Create a new document revision from the information provided by user"""
+
+ target_rev = form.cleaned_data['target_revision']
+
+ doc = lib.document(docid)
+ udoc = doc.take(request.user.username)
+
+ if target_rev == 'latest':
+ target_rev = udoc.revision
+
+ if str(udoc.revision) != target_rev:
+ # user think doesn't know he has an old version
+ # of his own branch.
+
+ # Updating is teorericly ok, but we need would
+ # have to force a refresh. Sharing may be not safe,
+ # 'cause it doesn't always result in update.
+
+ # In other words, we can't lie about the resource's state
+ # So we should just yield and 'out-of-date' conflict
+ # and let the client ask again with updated info.
+
+ # NOTE: this could result in a race condition, when there
+ # are 2 instances of the same user editing the same document.
+ # Instance "A" trying to update, and instance "B" always changing
+ # the document right before "A". The anwser to this problem is
+ # for the "A" to request a merge from 'latest' and then
+ # check the parent revisions in response, if he actually
+ # merge from where he thinks he should. If not, the client SHOULD
+ # update his internal state.
+ return response.EntityConflict().django_response({
+ "reason": "out-of-date",
+ "provided": target_rev,
+ "latest": udoc.revision })
+
+ if form.cleaned_data['type'] == 'update':
+ # update is always performed from the file branch
+ # to the user branch
+ success, changed = udoc.update(request.user.username)
+
+ if form.cleaned_data['type'] == 'share':
+ if not request.user.has_perm('explorer.document.can_share'):
+ # User is not permitted to make a merge, right away
+ # So we instead create a pull request in the database
+ try:
+ prq, created = PullRequest.objects.get_or_create(
+ source_revision = str(udoc.revision),
+ defaults = {
+ 'comitter': request.user,
+ 'document': docid,
+ 'status': "N",
+ 'comment': form.cleaned_data['message'] or '$AUTO$ Document shared.',
+ }
+ )
+
+ return response.RequestAccepted().django_response(\
+ ticket_status=prq.status, \
+ ticket_uri=reverse("pullrequest_view", args=[prq.id]) )
+ except IntegrityError:
+ return response.EntityConflict().django_response({
+ 'reason': 'request-already-exist'
+ })
+ else:
+ success, changed = udoc.share(form.cleaned_data['message'])
+
+ if not success:
+ return response.EntityConflict().django_response({
+ 'reason': 'merge-failure',
+ })
+
+ if not changed:
+ return response.SuccessNoContent().django_response()
+
+ nudoc = udoc.latest()
+
+ return response.SuccessAllOk().django_response({
+ "name": nudoc.id,
+ "parent_user_resivion": udoc.revision,
+ "parent_revision": doc.revision,
+ "revision": nudoc.revision,
+ 'timestamp': nudoc.revision.timestamp,
+ })
fnp / redakcja.git / blobdiff