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328 lines
12 KiB
328 lines
12 KiB
# -*- coding: utf-8 -*-
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# Copyright 2013 XCG Consulting (http://odoo.consulting)
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# Copyright 2016 ACSONE SA/NV
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# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl)
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import base64
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from base64 import b64decode
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from cStringIO import StringIO
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import json
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import logging
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import os
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from contextlib import closing
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import pkg_resources
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import requests
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import sys
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import tempfile
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from zipfile import ZipFile, ZIP_DEFLATED
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from odoo.exceptions import AccessError
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from odoo.exceptions import UserError
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from odoo.report.report_sxw import rml_parse
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from odoo import api, fields, models, _
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logger = logging.getLogger(__name__)
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try:
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from py3o.template.helpers import Py3oConvertor
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from py3o.template import Template
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from py3o import formats
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except ImportError:
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logger.debug('Cannot import py3o.template')
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try:
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from py3o.formats import Formats
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except ImportError:
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logger.debug('Cannot import py3o.formats')
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_extender_functions = {}
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class TemplateNotFound(Exception):
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pass
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def py3o_report_extender(report_xml_id=None):
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"""
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A decorator to define function to extend the context sent to a template.
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This will be called at the creation of the report.
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The following arguments will be passed to it:
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- ir_report: report instance
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- localcontext: The context that will be passed to the report engine
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If no report_xml_id is given the extender is registered for all py3o
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reports
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Idea copied from CampToCamp report_webkit module.
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:param report_xml_id: xml id of the report
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:return: a decorated class
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"""
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global _extender_functions
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def fct1(fct):
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_extender_functions.setdefault(report_xml_id, []).append(fct)
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return fct
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return fct1
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@py3o_report_extender()
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def defautl_extend(report_xml, localcontext):
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# add the base64decode function to be able do decode binary fields into
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# the template
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localcontext['b64decode'] = b64decode
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localcontext['report_xml'] = report_xml
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class Py3oReport(models.TransientModel):
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_name = "py3o.report"
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_inherit = 'report'
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_description = "Report Py30"
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ir_actions_report_xml_id = fields.Many2one(
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comodel_name="ir.actions.report.xml",
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required=True
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)
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@api.multi
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def _get_template_from_path(self, tmpl_name):
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""""Return the template from the path to root of the module if specied
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or an absolute path on your server
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"""
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if not tmpl_name:
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return None
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report_xml = self.ir_actions_report_xml_id
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flbk_filename = None
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if report_xml.module:
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# if the default is defined
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flbk_filename = pkg_resources.resource_filename(
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"odoo.addons.%s" % report_xml.module,
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tmpl_name,
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)
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elif os.path.isabs(tmpl_name):
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# It is an absolute path
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flbk_filename = os.path.normcase(os.path.normpath(tmpl_name))
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if flbk_filename and os.path.exists(flbk_filename):
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# and it exists on the fileystem
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with open(flbk_filename, 'r') as tmpl:
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return tmpl.read()
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return None
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@api.multi
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def _get_template_fallback(self, model_instance):
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"""
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Return the template referenced in the report definition
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:return:
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"""
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self.ensure_one()
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report_xml = self.ir_actions_report_xml_id
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return self._get_template_from_path(report_xml.py3o_template_fallback)
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@api.multi
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def get_template(self, model_instance):
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"""private helper to fetch the template data either from the database
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or from the default template file provided by the implementer.
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ATM this method takes a report definition recordset
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to try and fetch the report template from database. If not found it
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will fallback to the template file referenced in the report definition.
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@returns: string or buffer containing the template data
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@raises: TemplateNotFound which is a subclass of
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odoo.exceptions.DeferredException
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"""
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self.ensure_one()
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report_xml = self.ir_actions_report_xml_id
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if report_xml.py3o_template_id and report_xml.py3o_template_id.id:
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# if a user gave a report template
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tmpl_data = b64decode(
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report_xml.py3o_template_id.py3o_template_data
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)
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else:
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tmpl_data = self._get_template_fallback(model_instance)
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if tmpl_data is None:
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# if for any reason the template is not found
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raise TemplateNotFound(
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_(u'No template found. Aborting.'),
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sys.exc_info(),
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)
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return tmpl_data
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@api.multi
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def _extend_parser_context(self, context_instance, report_xml):
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# add default extenders
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for fct in _extender_functions.get(None, []):
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fct(report_xml, context_instance.localcontext)
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# add extenders for registered on the template
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xml_id = report_xml.get_external_id().get(report_xml.id)
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if xml_id in _extender_functions:
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for fct in _extender_functions[xml_id]:
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fct(report_xml, context_instance.localcontext)
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@api.multi
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def _get_parser_context(self, model_instance, data):
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report_xml = self.ir_actions_report_xml_id
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context_instance = rml_parse(self.env.cr, self.env.uid,
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report_xml.name,
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context=self.env.context)
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context_instance.set_context(model_instance, data, model_instance.ids,
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report_xml.report_type)
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self._extend_parser_context(context_instance, report_xml)
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return context_instance.localcontext
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@api.model
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def _postprocess_report(self, report_path, res_id, save_in_attachment):
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if save_in_attachment.get(res_id):
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with open(report_path, 'rb') as pdfreport:
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attachment = {
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'name': save_in_attachment.get(res_id),
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'datas': base64.encodestring(pdfreport.read()),
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'datas_fname': save_in_attachment.get(res_id),
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'res_model': save_in_attachment.get('model'),
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'res_id': res_id,
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}
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try:
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self.env['ir.attachment'].create(attachment)
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except AccessError:
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logger.info("Cannot save PDF report %r as attachment",
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attachment['name'])
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else:
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logger.info(
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'The PDF document %s is now saved in the database',
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attachment['name'])
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@api.multi
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def _create_single_report(self, model_instance, data, save_in_attachment):
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""" This function to generate our py3o report
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"""
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self.ensure_one()
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report_xml = self.ir_actions_report_xml_id
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filetype = report_xml.py3o_filetype
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result_fd, result_path = tempfile.mkstemp(
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suffix='.' + filetype, prefix='p3o.report.tmp.')
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tmpl_data = self.get_template(model_instance)
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in_stream = StringIO(tmpl_data)
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with closing(os.fdopen(result_fd, 'w+')) as out_stream:
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template = Template(in_stream, out_stream, escape_false=True)
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localcontext = self._get_parser_context(model_instance, data)
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is_native = Formats().get_format(filetype).native
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if report_xml.py3o_is_local_fusion:
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template.render(localcontext)
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out_stream.seek(0)
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in_stream = out_stream.read()
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datadict = {}
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else:
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expressions = template.get_all_user_python_expression()
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py_expression = template.convert_py3o_to_python_ast(
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expressions)
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convertor = Py3oConvertor()
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data_struct = convertor(py_expression)
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datadict = data_struct.render(localcontext)
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if not is_native or not report_xml.py3o_is_local_fusion:
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# Call py3o.server to render the template in the desired format
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files = {
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'tmpl_file': in_stream,
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}
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fields = {
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"targetformat": filetype,
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"datadict": json.dumps(datadict),
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"image_mapping": "{}",
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}
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if report_xml.py3o_is_local_fusion:
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fields['skipfusion'] = '1'
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r = requests.post(
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report_xml.py3o_server_id.url, data=fields, files=files)
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if r.status_code != 200:
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# server says we have an issue... let's tell that to enduser
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raise UserError(
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_('Fusion server error %s') % r.text,
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)
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chunk_size = 1024
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with open(result_path, 'w+') as fd:
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for chunk in r.iter_content(chunk_size):
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fd.write(chunk)
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self._postprocess_report(
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result_path, model_instance.id, save_in_attachment)
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return result_path
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@api.multi
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def _get_or_create_single_report(self, model_instance, data,
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save_in_attachment):
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self.ensure_one()
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if save_in_attachment and save_in_attachment[
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'loaded_documents'].get(model_instance.id):
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d = save_in_attachment[
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'loaded_documents'].get(model_instance.id)
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return d, self.ir_actions_report_xml_id.py3o_filetype
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return self._create_single_report(
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model_instance, data, save_in_attachment)
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@api.multi
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def _zip_results(self, reports_path):
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self.ensure_one()
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zfname_prefix = self.ir_actions_report_xml_id.name
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result_path = tempfile.mktemp(suffix="zip", prefix='py3o-zip-result')
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with ZipFile(result_path, 'w', ZIP_DEFLATED) as zf:
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cpt = 0
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for report in reports_path:
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fname = "%s_%d.%s" % (
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zfname_prefix, cpt, report.split('.')[-1])
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zf.write(report, fname)
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cpt += 1
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return result_path
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@api.multi
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def _merge_results(self, reports_path):
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self.ensure_one()
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filetype = self.ir_actions_report_xml_id.py3o_filetype
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if not reports_path:
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return False, False
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if len(reports_path) == 1:
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return reports_path[0], filetype
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if filetype == formats.FORMAT_PDF:
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return self._merge_pdf(reports_path), formats.FORMAT_PDF
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else:
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return self._zip_results(reports_path), 'zip'
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@api.model
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def _cleanup_tempfiles(self, temporary_files):
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# Manual cleanup of the temporary files
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for temporary_file in temporary_files:
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try:
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os.unlink(temporary_file)
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except (OSError, IOError):
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logger.error(
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'Error when trying to remove file %s' % temporary_file)
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@api.multi
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def create_report(self, res_ids, data):
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""" Override this function to handle our py3o report
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"""
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model_instances = self.env[self.ir_actions_report_xml_id.model].browse(
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res_ids)
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save_in_attachment = self._check_attachment_use(
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res_ids, self.ir_actions_report_xml_id) or {}
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reports_path = []
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for model_instance in model_instances:
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reports_path.append(
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self._get_or_create_single_report(
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model_instance, data, save_in_attachment))
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result_path, filetype = self._merge_results(reports_path)
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reports_path.append(result_path)
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# Here is a little joke about Odoo
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# we do all the generation process using files to avoid memory
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# consumption...
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# ... but odoo wants the whole data in memory anyways :)
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with open(result_path, 'r+b') as fd:
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res = fd.read()
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self._cleanup_tempfiles(set(reports_path))
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return res, filetype
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