erp5: bootstrap software instance test

with minimal tests to reproduce the issue that instanciation is broken
when no test runner.

note that we don't put tests in "one big test.py", but from the
beginning we separate so that we can put test for each software type in
test/test_$(software type).py and test for default software type in
test/test_erp5.py

software/erp5/test/README.md

+Tests for ERP5 software release

software/erp5/test/setup.py

+##############################################################################
+#
+# Copyright (c) 2018 Nexedi SA and Contributors. All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 3
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+from setuptools import setup, find_packages
+
+version = '0.0.1.dev0'
+name = 'slapos.test.erp5'
+long_description = open("README.md").read()
+
+setup(name=name,
+      version=version,
+      description="Test for SlapOS' ERP5 software releae",
+      long_description=long_description,
+      long_description_content_type='text/markdown',
+      maintainer="Nexedi",
+      maintainer_email="info@nexedi.com",
+      url="https://lab.nexedi.com/nexedi/slapos",
+      packages=find_packages(),
+      install_requires=[
+        'slapos.core',
+        'supervisor',
+        'slapos.libnetworkcache',
+        'erp5.util',
+        'psutil',
+        'requests',
+        ],
+      zip_safe=True,
+      test_suite='test',
+    )

software/erp5/test/test/__init__.py

+##############################################################################
+#
+# Copyright (c) 2018 Nexedi SA and Contributors. All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 3
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+import os
+import unittest
+import logging
+
+if os.environ.get('DEBUG'):
+  raise ValueError("Don't set DEBUG - it breaks postfix compilation - set SLAPOS_TEST_DEBUG instead.")
+
+debug_mode = os.environ.get('SLAPOS_TEST_DEBUG')
+# for development: debugging logs and install Ctrl+C handler
+if debug_mode:
+  logging.basicConfig(level=logging.DEBUG)
+  unittest.installHandler()

software/erp5/test/test/test_erp5.py

+##############################################################################
+#
+# Copyright (c) 2018 Nexedi SA and Contributors. All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 3
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+import os
+import json
+import glob
+import urlparse
+import logging
+import time
+
+import requests
+
+from utils import SlapOSInstanceTestCase
+
+
+class ERP5TestCase(SlapOSInstanceTestCase):
+  """Test the remote driver on a minimal web server.
+  """
+  logger = logging.getLogger(__name__)
+  @classmethod
+  def getSoftwareURLList(cls):
+    return (os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', 'software.cfg')), )
+
+  def getRootPartitionConnectionParameterDict(self):
+    """Return the output paramters from the root partition"""
+    return json.loads(
+        self.computer_partition.getConnectionParameterDict()['_'])
+
+
+class TestPublishedURLIsReachableMixin(object):
+  """Mixin that checks that default page of ERP5 is reachable.
+  """
+  def _checkERP5IsReachable(self, url):
+    # What happens is that instanciation just create the services, but does not
+    # wait for ERP5 to be initialized. When this test run ERP5 instance is
+    # instanciated, but zope is still busy creating the site and haproxy replies
+    # with 503 Service Unavailable.
+    # If we can move the "create site" in slapos node instance, then this retry loop
+    # would not be necessary.
+    for i in range(1, 20):
+      r = requests.get(url, verify=False) # XXX can we get CA from caucase already ?
+      if r.status_code == requests.codes.service_unavailable:
+        delay = i * 2
+        self.logger.warn("ERP5 was not available, sleeping for %ds and retrying", delay)
+        time.sleep(delay)
+        continue
+      if r.status_code != requests.codes.ok:
+        r.raise_for_status()
+      break
+
+    self.assertIn("ERP5", r.text)
+
+  def test_published_family_default_v6_is_reachable(self):
+    """Tests the IPv6 URL published by the root partition is reachable.
+    """
+    param_dict = self.getRootPartitionConnectionParameterDict()
+    self._checkERP5IsReachable(
+      urlparse.urljoin(param_dict['family-default-v6'], param_dict['site-id']))
+
+  def test_published_family_default_v4_is_reachable(self):
+    """Tests the IPv4 URL published by the root partition is reachable.
+    """
+    param_dict = self.getRootPartitionConnectionParameterDict()
+    self._checkERP5IsReachable(
+      urlparse.urljoin(param_dict['family-default'], param_dict['site-id']))
+
+
+class TestDefaultParameters(ERP5TestCase, TestPublishedURLIsReachableMixin):
+  """Test ERP5 can be instanciated with no parameters
+  """
+
+
+class TestDisableTestRunner(ERP5TestCase, TestPublishedURLIsReachableMixin):
+  """Test ERP5 can be instanciated without test runner.
+  """
+  @classmethod
+  def getInstanceParameterDict(cls):
+    return {'_': json.dumps({'test-runner': {'enabled': False}})}
+
+  def test_no_runUnitTestScript(self):
+    """No runUnitTest script should be generated in any partition.
+    """
+    # self.computer_partition_root_path is the path of root partition.
+    # we want to assert that no scripts exist in any partition.
+    bin_programs = [os.path.basename(path) for path in
+      glob.glob("{}/../*/bin/*".format(self.computer_partition_root_path))]
+
+    self.assertTrue(bin_programs) # just to check the glob was correct.
+    self.assertNotIn('runUnitTest', bin_programs)
+    self.assertNotIn('runTestSuite', bin_programs)

software/erp5/test/utils.py

+##############################################################################
+#
+# Copyright (c) 2018 Nexedi SA and Contributors. All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 3
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+import unittest
+import os
+import socket
+from contextlib import closing
+import logging
+import StringIO
+import xmlrpclib
+
+import supervisor.xmlrpc
+from erp5.util.testnode.SlapOSControler import SlapOSControler
+from erp5.util.testnode.ProcessManager import ProcessManager
+
+
+# Utility functions
+def findFreeTCPPort(ip=''):
+  """Find a free TCP port to listen to.
+  """
+  family = socket.AF_INET6 if ':' in ip else socket.AF_INET
+  with closing(socket.socket(family, socket.SOCK_STREAM)) as s:
+    s.bind((ip, 0))
+    return s.getsockname()[1]
+
+
+# TODO:
+#  - allow requesting multiple instances ?
+
+class SlapOSInstanceTestCase(unittest.TestCase):
+  """Install one slapos instance.
+
+  This test case install software(s) and request one instance during `setUpClass`
+  and destroy the instance during `tearDownClass`.
+
+  Software Release URL, Instance Software Type and Instance Parameters can be defined
+  on the class.
+
+  All tests from the test class will run with the same instance.
+  
+  The following class attributes are available:
+
+    * `computer_partition`:  the `slapos.core.XXX` computer partition instance.
+
+    * `computer_partition_root_path`: the path of the instance root directory,
+        
+  """
+  
+  # Methods to be defined by subclasses.
+  @classmethod
+  def getSoftwareURLList(cls):
+    """Return URL of software releases to install.
+
+    To be defined by subclasses.
+    """
+    raise NotImplementedError()
+
+  @classmethod
+  def getInstanceParameterDict(cls):
+    """Return instance parameters
+
+    To be defined by subclasses if they need to request instance with specific
+    parameters.
+    """
+    return {}
+
+  @classmethod
+  def getInstanceSoftwareType(cls):
+    """Return software type for instance, default "default"
+
+    To be defined by subclasses if they need to request instance with specific
+    software type.
+    """
+    return "default"
+
+  # Utility methods.
+  def getSupervisorRPCServer(self):
+    """Returns a XML-RPC connection to the supervisor used by slapos node
+
+    Refer to http://supervisord.org/api.html for details of available methods.
+    """
+    # xmlrpc over unix socket https://stackoverflow.com/a/11746051/7294664
+    return xmlrpclib.ServerProxy(
+       'http://slapos-supervisor',
+       transport=supervisor.xmlrpc.SupervisorTransport(
+           None,
+           None,
+           # XXX hardcoded socket path
+           serverurl="unix://{working_directory}/inst/supervisord.socket".format(
+             **self.config)))
+
+  # Unittest methods
+  @classmethod
+  def setUpClass(cls):
+    """Setup the class, build software and request an instance.
+    
+    If you have to override this method, do not forget to call this method on
+    parent class.
+    """
+    try:
+      cls.setUpWorkingDirectory()
+      cls.setUpConfig()
+      cls.setUpSlapOSController()
+
+      cls.runSoftwareRelease()
+      # XXX instead of "runSoftwareRelease", it would be better to be closer to slapos usage:
+      # cls.supplySoftwares()
+      # cls.installSoftwares()
+
+      cls.runComputerPartition()
+      # XXX instead of "runComputerPartition", it would be better to be closer to slapos usage:
+      # cls.requestInstances()
+      # cls.createInstances()
+      # cls.requestInstances()
+
+    except BaseException:
+      cls.stopSlapOSProcesses()
+      cls.setUp = lambda self: self.fail('Setup Class failed.')
+      raise
+
+  @classmethod
+  def tearDownClass(cls):
+    """Tear down class, stop the processes and destroy instance.
+    """
+    cls.stopSlapOSProcesses()
+
+  # Implementation
+  @classmethod
+  def stopSlapOSProcesses(cls):
+    if hasattr(cls, '_process_manager'):
+      cls._process_manager.killPreviousRun()
+
+  @classmethod
+  def setUpWorkingDirectory(cls):
+    """Initialise the directories"""
+    cls.working_directory = os.environ.get(
+        'SLAPOS_TEST_WORKING_DIR',
+        os.path.join(os.path.dirname(__file__), '.slapos'))
+    # To prevent error: Cannot open an HTTP server: socket.error reported
+    # AF_UNIX path too long This `working_directory` should not be too deep.
+    # Socket path is 108 char max on linux
+    # https://github.com/torvalds/linux/blob/3848ec5/net/unix/af_unix.c#L234-L238
+    # Supervisord socket name contains the pid number, which is why we add
+    # .xxxxxxx in this check.
+    if len(cls.working_directory + '/inst/supervisord.socket.xxxxxxx') > 108:
+      raise RuntimeError('working directory ( {} ) is too deep, try setting '
+              'SLAPOS_TEST_WORKING_DIR'.format(cls.working_directory))
+
+    if not os.path.exists(cls.working_directory):
+      os.mkdir(cls.working_directory)
+
+  @classmethod
+  def setUpConfig(cls):
+    """Create slapos configuration"""
+    cls.config = {
+      "working_directory": cls.working_directory,
+      "slapos_directory": cls.working_directory,
+      "log_directory": cls.working_directory,
+      "computer_id": 'slapos.test',  # XXX
+      'proxy_database': os.path.join(cls.working_directory, 'proxy.db'),
+      'partition_reference': cls.__name__,
+      # "proper" slapos command must be in $PATH
+      'slapos_binary': 'slapos',
+    }
+    # Some tests are expecting that local IP is not set to 127.0.0.1
+    ipv4_address = os.environ.get('LOCAL_IPV4', '127.0.1.1')
+    ipv6_address = os.environ['GLOBAL_IPV6']
+
+    cls.config['proxy_host'] = cls.config['ipv4_address'] = ipv4_address
+    cls.config['ipv6_address'] = ipv6_address
+    cls.config['proxy_port'] = findFreeTCPPort(ipv4_address)
+    cls.config['master_url'] = 'http://{proxy_host}:{proxy_port}'.format(
+      **cls.config)
+
+  @classmethod
+  def setUpSlapOSController(cls):
+    """Create the a "slapos controller" and supply softwares from `getSoftwareURLList`.
+
+    This is equivalent to:
+
+    slapos proxy start
+    for sr in getSoftwareURLList; do
+      slapos supply $SR $COMP
+    done
+    """ 
+    cls._process_manager = ProcessManager()
+
+    # XXX this code is copied from testnode code
+    cls.slapos_controler = SlapOSControler(
+        cls.working_directory,
+        cls.config
+    )
+
+    slapproxy_log = os.path.join(cls.config['log_directory'], 'slapproxy.log')
+    logger = logging.getLogger(__name__)
+    logger.debug('Configured slapproxy log to %r', slapproxy_log)
+
+    cls.software_url_list = cls.getSoftwareURLList()
+    cls.slapos_controler.initializeSlapOSControler(
+        slapproxy_log=slapproxy_log,
+        process_manager=cls._process_manager,
+        reset_software=False,
+        software_path_list=cls.software_url_list)
+
+    # XXX we should check *earlier* if that pidfile exist and if supervisord
+    # process still running, because if developer started supervisord (or bugs?)
+    # then another supervisord will start and starting services a second time
+    # will fail.
+    cls._process_manager.supervisord_pid_file = os.path.join(
+      cls.slapos_controler.instance_root, 'var', 'run', 'supervisord.pid')
+
+  @classmethod
+  def runSoftwareRelease(cls):
+    """Run all the software releases that were supplied before.
+
+    This is the equivalent of `slapos node software`.
+
+    The tests will be marked file if software building fail.
+    """
+    logger = logging.getLogger()
+    logger.level = logging.DEBUG
+    stream = StringIO.StringIO()
+    stream_handler = logging.StreamHandler(stream)
+    logger.addHandler(stream_handler)
+
+    try:
+      cls.software_status_dict = cls.slapos_controler.runSoftwareRelease(
+        cls.config, environment=os.environ)
+      stream.seek(0)
+      stream.flush()
+      message = ''.join(stream.readlines()[-100:])
+      assert cls.software_status_dict['status_code'] == 0, message
+    finally:
+      logger.removeHandler(stream_handler)
+      del stream
+
+
+  @classmethod
+  def runComputerPartition(cls):
+    """Instanciate the software.
+
+    This is the equivalent of doing:
+
+    slapos request --type=getInstanceSoftwareType --parameters=getInstanceParameterDict
+    slapos node instance
+
+    and return the slapos request instance parameters.
+
+    This can be called by tests to simulate re-request with different parameters.
+    """
+    logger = logging.getLogger()
+    logger.level = logging.DEBUG
+    stream = StringIO.StringIO()
+    stream_handler = logging.StreamHandler(stream)
+    logger.addHandler(stream_handler)
+
+    if cls.getInstanceSoftwareType() != 'default':
+      raise NotImplementedError
+
+    instance_parameter_dict = cls.getInstanceParameterDict()
+    try:
+      cls.instance_status_dict = cls.slapos_controler.runComputerPartition(
+        cls.config,
+        cluster_configuration=instance_parameter_dict,
+        environment=os.environ)
+      stream.seek(0)
+      stream.flush()
+      message = ''.join(stream.readlines()[-100:])
+      assert cls.instance_status_dict['status_code'] == 0, message
+    finally:
+      logger.removeHandler(stream_handler)
+      del stream
+
+    # FIXME: similar to test node, only one (root) partition is really
+    #        supported for now.
+    computer_partition_list = []
+    for i in range(len(cls.software_url_list)):
+      computer_partition_list.append(
+          cls.slapos_controler.slap.registerOpenOrder().request(
+            cls.software_url_list[i],
+            # This is how testnode's SlapOSControler name created partitions
+            partition_reference='testing partition {i}'.format(
+              i=i, **cls.config),
+            partition_parameter_kw=instance_parameter_dict))
+
+    # expose some class attributes so that tests can use them:
+    # the ComputerPartition instances, to getInstanceParameterDict
+    cls.computer_partition = computer_partition_list[0]
+
+    # the path of the instance on the filesystem, for low level inspection
+    cls.computer_partition_root_path = os.path.join(
+        cls.config['working_directory'],
+        'inst',
+        cls.computer_partition.getId())
+
+