[IMP][FIX] py3o_report, py3o_report_fusion_server: Compute the availability of py3o report

Before this change it was not possible to install modules declaring py3o report into a non native format without specifying a Fusion server once the module py3o_report_fusion_server was installed. With theses changes, we now take care of the availability of the libreoffice runtime to display/log a warning message when the report is in a non native runtime.

report_py3o/models/ir_actions_report.py

@@ -5,8 +5,10 @@ import logging
 import time
 from odoo import api, fields, models, _
 from odoo.exceptions import ValidationError
+from odoo.tools.misc import find_in_path
 from odoo.tools.safe_eval import safe_eval
 
+
 logger = logging.getLogger(__name__)
 
 try:
@@ -14,6 +16,8 @@ try:
 except ImportError:
     logger.debug('Cannot import py3o.formats')
 
+PY3O_CONVERSION_COMMAND_PARAMETER = "py3o.conversion_command"
+
 
 class IrActionsReport(models.Model):
     """ Inherit from ir.actions.report to allow customizing the template
@@ -49,6 +53,9 @@ class IrActionsReport(models.Model):
     py3o_filetype = fields.Selection(
         selection="_get_py3o_filetypes",
         string="Output Format")
+    is_py3o_native_format = fields.Boolean(
+        compute='_compute_is_py3o_native_format'
+    )
     py3o_template_id = fields.Many2one(
         'py3o.template',
         "Template")
@@ -70,6 +77,77 @@ class IrActionsReport(models.Model):
         "by default Odoo will generate a ZIP file that contains as many "
         "files as selected records. If you enable this option, Odoo will "
         "generate instead a single report for the selected records.")
+    lo_bin_path = fields.Char(
+        string="Path to the libreoffice runtime",
+        compute="_compute_lo_bin_path"
+        )
+    is_py3o_report_not_available = fields.Boolean(
+        compute='_compute_py3o_report_not_available'
+        )
+    msg_py3o_report_not_available = fields.Char(
+        compute='_compute_py3o_report_not_available'
+        )
+
+    @api.model
+    def _register_hook(self):
+        self._validate_reports()
+
+    @api.model
+    def _validate_reports(self):
+        """Check if the existing py3o reports should work with the current
+        installation.
+
+        This method log a warning message into the logs for each report
+        that should not work.
+        """
+        for report in self.search([("report_type", "=", "py3o")]):
+            if report.is_py3o_report_not_available:
+                logger.warning(report.msg_py3o_report_not_available)
+
+    @api.model
+    def _get_lo_bin(self):
+        lo_bin = self.env['ir.config_parameter'].get_param(
+            PY3O_CONVERSION_COMMAND_PARAMETER, 'libreoffice',
+        )
+        try:
+            lo_bin = find_in_path(lo_bin)
+        except IOError:
+            lo_bin = None
+        return lo_bin
+
+    @api.depends("report_type", "py3o_filetype")
+    @api.multi
+    def _compute_is_py3o_native_format(self):
+        format = Formats()
+        for rec in self:
+            if not rec.report_type == "py3o":
+                continue
+            filetype = rec.py3o_filetype
+            rec.is_py3o_native_format = format.get_format(filetype).native
+
+    @api.multi
+    def _compute_lo_bin_path(self):
+        lo_bin = self._get_lo_bin()
+        for rec in self:
+            rec.lo_bin_path = lo_bin
+
+    @api.depends("lo_bin_path", "is_py3o_native_format", "report_type")
+    @api.multi
+    def _compute_py3o_report_not_available(self):
+        for rec in self:
+            if not rec.report_type == "py3o":
+                continue
+            if not rec.is_py3o_native_format and not rec.lo_bin_path:
+                rec.is_py3o_report_not_available = True
+                rec.msg_py3o_report_not_available = _(
+                    "The libreoffice runtime is required to genereate the "
+                    "py3o report '%s' but is not found into the bin path. You "
+                    "must install the libreoffice runtime on the server. If "
+                    "the runtime is already installed and is not found by "
+                    "Odoo, you can provide the full path to the runtime by "
+                    "setting the key 'py3o.conversion_command' into the "
+                    "configuration parameters."
+                ) % rec.name
 
     @api.model
     def get_from_report_name(self, report_name, report_type):

report_py3o/models/py3o_report.py

@@ -242,8 +242,7 @@ class Py3oReport(models.TransientModel):
     @api.multi
     def _convert_single_report(self, result_path, model_instance, data):
         """Run a command to convert to our target format"""
-        filetype = self.ir_actions_report_id.py3o_filetype
-        if not Formats().get_format(filetype).native:
+        if not self.ir_actions_report_id.is_py3o_native_format:
             command = self._convert_single_report_cmd(
                 result_path, model_instance, data,
             )
@@ -256,7 +255,8 @@ class Py3oReport(models.TransientModel):
             result_path, result_filename = os.path.split(result_path)
             result_path = os.path.join(
                 result_path, '%s.%s' % (
-                    os.path.splitext(result_filename)[0], filetype
+                    os.path.splitext(result_filename)[0],
+                    self.ir_actions_report_id.py3o_filetype
                 )
             )
         return result_path
@@ -264,10 +264,14 @@ class Py3oReport(models.TransientModel):
     @api.multi
     def _convert_single_report_cmd(self, result_path, model_instance, data):
         """Return a command list suitable for use in subprocess.call"""
+        lo_bin = self.ir_actions_report_id.lo_bin_path
+        if not lo_bin:
+            raise RuntimeError(
+                _("Libreoffice runtime not available. "
+                  "Please contact your administrator.")
+            )
         return [
-            self.env['ir.config_parameter'].get_param(
-                'py3o.conversion_command', 'libreoffice',
-            ),
+            lo_bin,
             '--headless',
             '--convert-to',
             self.ir_actions_report_id.py3o_filetype,

report_py3o/tests/test_report_py3o.py

@@ -15,6 +15,7 @@ from odoo.tests.common import TransactionCase
 from odoo.exceptions import ValidationError
 from odoo.addons.base.tests.test_mimetypes import PNG
 
+from ..models.ir_actions_report import PY3O_CONVERSION_COMMAND_PARAMETER
 from ..models.py3o_report import TemplateNotFound
 from ..models._py3o_parser_context import format_multiline_value
 from base64 import b64encode
@@ -83,6 +84,7 @@ class TestReportPy3o(TransactionCase):
         self.assertTrue(res)
 
     def test_reports_merge_zip(self):
+        self.report.py3o_filetype = "odt"
         users = self.env['res.users'].search([])
         self.assertTrue(len(users) > 0)
         py3o_report = self.env['py3o.report']
@@ -217,3 +219,42 @@ class TestReportPy3o(TransactionCase):
     def test_escape_html_characters_format_multiline_value(self):
         self.assertEqual(Markup('&lt;&gt;<text:line-break/>&amp;test;'),
                          format_multiline_value('<>\n&test;'))
+
+    def test_py3o_report_availability(self):
+        # This test could fails if libreoffice is not available on the server
+        self.report.py3o_filetype = "odt"
+        self.assertTrue(self.report.lo_bin_path)
+        self.assertTrue(self.report.is_py3o_native_format)
+        self.assertFalse(self.report.is_py3o_report_not_available)
+        self.assertFalse(self.report.msg_py3o_report_not_available)
+
+        # specify a wrong lo bin path
+        self.env['ir.config_parameter'].set_param(
+            PY3O_CONVERSION_COMMAND_PARAMETER, "/wrong_path")
+        self.report.refresh()
+        # no bin path available but the report is still available since
+        # the output is into native format
+        self.assertFalse(self.report.lo_bin_path)
+        self.assertFalse(self.report.is_py3o_report_not_available)
+        self.assertFalse(self.report.msg_py3o_report_not_available)
+        res = self.report.render(self.env.user.ids)
+        self.assertTrue(res)
+
+        # The report should become unavailable for an non native output format
+        self.report.py3o_filetype = "pdf"
+        self.assertFalse(self.report.is_py3o_native_format)
+        self.assertTrue(self.report.is_py3o_report_not_available)
+        self.assertTrue(self.report.msg_py3o_report_not_available)
+        with self.assertRaises(RuntimeError):
+            self.report.render(self.env.user.ids)
+
+        # if we reset the wrong path, everything should work
+        self.env['ir.config_parameter'].set_param(
+            PY3O_CONVERSION_COMMAND_PARAMETER, "libreoffice")
+        self.report.refresh()
+        self.assertTrue(self.report.lo_bin_path)
+        self.assertFalse(self.report.is_py3o_native_format)
+        self.assertFalse(self.report.is_py3o_report_not_available)
+        self.assertFalse(self.report.msg_py3o_report_not_available)
+        res = self.report.render(self.env.user.ids)
+        self.assertTrue(res)

report_py3o/views/ir_actions_report.xml

@@ -8,12 +8,21 @@
         <field name="model">ir.actions.report</field>
         <field name="inherit_id" ref="base.act_report_xml_view" />
         <field name="arch" type="xml">
-
+            <xpath expr="/form/field[1]" position="before">
+                 <field name="is_py3o_report_not_available" invisible="1"/>
+                     <div class="alert alert-danger"
+                        role="alert"
+                        style="margin-bottom:0px;"
+                        attrs="{'invisible': [('is_py3o_report_not_available','=',False)]}">
+                        <field name="msg_py3o_report_not_available"/>
+                    </div>
+            </xpath>
             <xpath expr="//page[@name='security']" position="before">
                 <page string="LibreOffice Template" name="py3o_tab"
                     attrs="{'invisible': [('report_type', '!=', 'py3o')]}">
 
                     <group name="py3o_params">
+                        <field name="lo_bin_path"/>
                         <field name="py3o_filetype" />
                         <field name="py3o_multi_in_one"/>
                         <field name="py3o_template_id" />