software/powerdns: auto-restart services on SR upgrade.

/reviewed-on nexedi/slapos!411

software/erp5testnode/testsuite/powerdns/README.md

+# powerdns test
+
+This software release is simply to run the test suite from `../powerdns/test/setup.py`
+
+Nexedi staff can see the results of this test from the test suite
+`SLAPOS-POWERDNS-TEST` in test result module.
+

software/erp5testnode/testsuite/powerdns/buildout.hash.cfg

+# THIS IS NOT A BUILDOUT FILE, despite purposedly using a compatible syntax.
+# The only allowed lines here are (regexes):
+# - "^#" comments, copied verbatim
+# - "^[" section beginings, copied verbatim
+# - lines containing an "=" sign which must fit in the following categorie.
+#   - "^\s*filename\s*=\s*path\s*$" where "path" is relative to this file
+#     Copied verbatim.
+#   - "^\s*hashtype\s*=.*" where "hashtype" is one of the values supported
+#     by the re-generation script.
+#     Re-generated.
+# - other lines are copied verbatim
+# Substitution (${...:...}), extension ([buildout] extends = ...) and
+# section inheritance (< = ...) are NOT supported (but you should really
+# not need these here).
+
+[template]
+filename = instance.cfg.in
+md5sum = af932783693bf8a7fec32d00a8e07ed2
+

software/erp5testnode/testsuite/powerdns/instance.cfg.in

+[buildout]
+parts =
+  slapos-test-runner
+
+eggs-directory = ${buildout:eggs-directory}
+develop-eggs-directory = ${buildout:develop-eggs-directory}
+offline = true
+
+[slap-configuration]
+recipe = slapos.cookbook:slapconfiguration
+computer = $${slap-connection:computer-id}
+partition = $${slap-connection:partition-id}
+url = $${slap-connection:server-url}
+key = $${slap-connection:key-file}
+cert = $${slap-connection:cert-file}
+
+[download-source]
+recipe = slapos.recipe.build:gitclone
+git-executable = ${git:location}/bin/git
+
+[slapos]
+<= download-source
+repository = ${slapos-repository:location}
+
+[create-directory]
+recipe = slapos.cookbook:mkdirectory
+bin = $${buildout:directory}/bin
+working-dir = $${buildout:directory}/tmp/
+
+[slapos-test-runner]
+recipe = slapos.cookbook:wrapper
+wrapper-path = $${create-directory:bin}/runTestSuite
+command-line =
+  ${buildout:bin-directory}/runTestSuite
+  --python_interpreter=${buildout:bin-directory}/${eggs:interpreter}
+  --source_code_path_list=$${slapos:location}/software/powerdns/test
+
+
+# XXX slapos.cookbook:wrapper does not allow extending env, so we add some default $PATH entries ( not sure they are needed )
+environment =
+  PATH=${buildout:bin-directory}:/usr/bin/:/bin/
+  LOCAL_IPV4=$${slap-configuration:ipv4-random}
+  GLOBAL_IPV6=$${slap-configuration:ipv6-random}
+  SLAPOS_TEST_WORKING_DIR=$${create-directory:working-dir}

software/erp5testnode/testsuite/powerdns/software.cfg

+[buildout]
+
+extends =
+  ../../../../component/git/buildout.cfg
+  ../../../../stack/slapos.cfg
+  ./buildout.hash.cfg
+
+parts =
+  slapos-cookbook
+  eggs
+  template
+
+[setup-develop-egg]
+recipe = zc.recipe.egg:develop
+
+[slapos.test.powerdns-setup]
+<= setup-develop-egg
+egg = slapos.test.powerdns
+setup = ${slapos-repository:location}/software/powerdns/test/
+
+[eggs]
+recipe = zc.recipe.egg
+eggs =
+  ${slapos.test.powerdns-setup:egg}
+  slapos.core
+entry-points =
+  runTestSuite=erp5.util.testsuite:runTestSuite
+scripts =
+  runTestSuite
+  slapos
+interpreter=
+  python_for_test
+
+[git-clone-repository]
+recipe = slapos.recipe.build:gitclone
+git-executable = ${git:location}/bin/git
+forbid-download-cache = true
+branch = master
+
+[slapos-repository]
+<= git-clone-repository
+repository = https://lab.nexedi.com/nexedi/slapos.git
+
+[template]
+recipe = slapos.recipe.template
+url = ${:_profile_base_location_}/${:filename}
+output = ${buildout:directory}/template.cfg
+mode = 640
+
+[versions]
+# clear the version of tested eggs, to make sure we installed the developped ones
+slapos.test.powerdns =
+erp5.util = 0.4.56
+
+pyasn1 = 0.4.2
+slapos.recipe.template = 4.3
+pysftp = 0.2.9

software/powerdns/instance-powerdns.cfg

@@ -86,6 +86,7 @@ extra-context =
 recipe = slapos.cookbook:wrapper
 command-line = ${powerdns:location}/sbin/pdns_server --config-dir=$${pdns-directory:configuration}
 wrapper-path = $${directory:service}/pdns
+hash-files = $${buildout:directory}/software_release/buildout.cfg
 
 [pdns-reload]
 recipe = slapos.cookbook:wrapper

software/powerdns/software.cfg

@@ -25,7 +25,7 @@ mode = 0644
 [template-powerdns]
 recipe = slapos.recipe.template
 url = ${:_profile_base_location_}/instance-powerdns.cfg
-md5sum = 8ef7c87e23dd63c945c7e292fef7385d
+md5sum = e623ae588e14cbfda69e28a3002eaa29
 output = ${buildout:directory}/template-powerdns.cfg
 mode = 0644
 
@@ -38,7 +38,7 @@ mode = 640
 [template-dns-replicate]
 recipe = slapos.recipe.build:download
 url = ${:_profile_base_location_}/instance-powerdns-replicate.cfg.jinja2
-md5sum = 46acd4ed071df8d7139dcd0434be42eb 
+md5sum = 46acd4ed071df8d7139dcd0434be42eb
 mode = 0644
 
 [iso-list]

software/powerdns/test/README.md

+Tests for powerdns Software Release

software/powerdns/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
+import glob
+import os
+
+version = '0.0.1.dev0'
+name = 'slapos.test.powerdns'
+long_description = open("README.md").read()
+
+setup(name=name,
+      version=version,
+      description="Test for SlapOS' powerdns",
+      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',
+          'slapos.libnetworkcache',
+          'erp5.util',
+          'supervisor',
+          'psutil',
+      ],
+      zip_safe=True,
+      test_suite='test',
+      )

software/powerdns/test/test.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 shutil
+import urlparse
+import tempfile
+import requests
+import socket
+import StringIO
+import subprocess
+import json
+
+import psutil
+
+import utils
+
+# for development: debugging logs and install Ctrl+C handler
+if os.environ.get('DEBUG'):
+  import logging
+  logging.basicConfig(level=logging.DEBUG)
+  import unittest
+  unittest.installHandler()
+
+
+class InstanceTestCase(utils.SlapOSInstanceTestCase):
+  @classmethod
+  def getSoftwareURLList(cls):
+    return (os.path.abspath(os.path.join(os.path.dirname(__file__), '..', 'software.cfg')), )
+
+
+class ServicesTestCase(InstanceTestCase):
+  @staticmethod
+  def generateHashFromFiles(file_list):
+    import hashlib
+    hasher = hashlib.md5()
+    for path in file_list:
+      with open(path, 'r') as afile:
+        buf = afile.read()
+      hasher.update("%s\n" % len(buf))
+      hasher.update(buf)
+    hash = hasher.hexdigest()
+    return hash
+
+  def test_hashes(self):
+    hash_files = [
+      'software_release/buildout.cfg',
+    ]
+    expected_process_names = [
+      'pdns-{hash}-on-watch',
+    ]
+
+    supervisor = self.getSupervisorRPCServer().supervisor
+    process_names = [process['name']
+                     for process in supervisor.getAllProcessInfo()]
+
+    hash_files = [os.path.join(self.computer_partition_root_path, path)
+                  for path in hash_files]
+
+    for name in expected_process_names:
+      h = ServicesTestCase.generateHashFromFiles(hash_files)
+      expected_process_name = name.format(hash=h)
+
+      self.assertIn(expected_process_name, process_names)

software/powerdns/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 computer partition instance, implementing
+    `slapos.slap.interface.slap.IComputerPartition`.
+
+    * `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 Exception:
+      cls.stopSlapOSProcesses()
+      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())
+
+
+