diff --git a/SDP/LICENSE.txt b/SDP/LICENSE.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ae533fce6dc75595f91290511273c7ff62312f76
--- /dev/null
+++ b/SDP/LICENSE.txt
@@ -0,0 +1,202 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "{}"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
+ same "printed page" as the copyright notice for easier
+ identification within third-party archives.
+
+ Copyright 2020 Stichting Nederlandse Wetenschappelijk Onderzoek Instituten,
+ASTRON Netherlands Institute for Radio Astronomy
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
diff --git a/SDP/MANIFEST.in b/SDP/MANIFEST.in
new file mode 100644
index 0000000000000000000000000000000000000000..d9d9aaba41c43f633c9a02635e72b4eb1b791f50
--- /dev/null
+++ b/SDP/MANIFEST.in
@@ -0,0 +1,9 @@
+recursive-include RCUSCC *.py
+recursive-include test *.py
+include *.rst
+include RCUSCC.xmi
+include *.txt
+graft docs
+
+global-exclude *.pyc
+global-exclude *.pyo
diff --git a/SDP/NOTICE b/SDP/NOTICE
new file mode 100644
index 0000000000000000000000000000000000000000..9c7867598e17de5d69b8c26656caa8316cd0a30f
--- /dev/null
+++ b/SDP/NOTICE
@@ -0,0 +1,8 @@
+Citation Notice version 1.0
+This Citation Notice is part of the LOFAR software suite.
+Parties that use ASTRON Software resulting in papers and/or publications are requested to
+refer to the DOI(s) that correspond(s) to the version(s) of the ASTRON Software used:
+<List of DOIs>
+Parties that use ASTRON Software for purposes that do not result in publications (e.g.
+commercial parties) are asked to inform ASTRON about their use of ASTRON Software, by
+sending an email to including the DOIs mentioned above in the message.
\ No newline at end of file
diff --git a/SDP/README.rst b/SDP/README.rst
new file mode 100644
index 0000000000000000000000000000000000000000..aafea1e3022ae9546fd62e1a2b1474dfc1bbef6a
--- /dev/null
+++ b/SDP/README.rst
@@ -0,0 +1,25 @@
+## SDP Device Server for LOFAR2.0
+
+
+## Requirement
+
+- PyTango >= 8.1.6
+- devicetest (for using tests)
+- sphinx (for building sphinx documentation)
+
+## Installation
+
+Run python setup.py install
+
+If you want to build sphinx documentation,
+run python setup.py build_sphinx
+
+If you want to pass the tests,
+run python setup.py test
+
+## Usage
+
+Now you can start your device server in any
+Terminal or console by calling it :
+
+SDP instance_name
diff --git a/SDP/SDP/SDP.py b/SDP/SDP/SDP.py
new file mode 100644
index 0000000000000000000000000000000000000000..b98336472165d390a050a63c95d8dfb91a67be5a
--- /dev/null
+++ b/SDP/SDP/SDP.py
@@ -0,0 +1,319 @@
+# -*- coding: utf-8 -*-
+#
+# This file is part of the SDP project
+#
+#
+#
+# Distributed under the terms of the APACHE license.
+# See LICENSE.txt for more info.
+
+""" SDP Device Server for LOFAR2.0
+
+"""
+
+# PyTango imports
+from tango import DebugIt
+from tango.server import run
+from tango.server import Device
+from tango.server import attribute, command
+from tango.server import device_property
+from tango import AttrQuality, DispLevel, DevState
+from tango import AttrWriteType, PipeWriteType
+# Additional import
+import sys
+import opcua
+import numpy
+
+from wrappers import only_in_states, only_when_on, fault_on_error
+from opcua_connection import OPCUAConnection
+
+__all__ = ["SDP", "main"]
+
+class SDP(Device):
+ """
+
+ **Properties:**
+
+ - Device Property
+ OPC_Server_Name
+ - Type:'DevString'
+ OPC_Server_Port
+ - Type:'DevULong'
+ OPC_Time_Out
+ - Type:'DevDouble'
+
+ States are as follows:
+ INIT = Device is initialising.
+ STANDBY = Device is initialised, but pends external configuration and an explicit turning on,
+ ON = Device is fully configured, functional, controls the hardware, and is possibly actively running,
+ FAULT = Device detected an unrecoverable error, and is thus malfunctional,
+ OFF = Device is turned off, drops connection to the hardware,
+
+ The following state transitions are implemented:
+ boot -> OFF: Triggered by tango. Device will be instantiated,
+ OFF -> INIT: Triggered by device. Device will initialise (connect to hardware, other devices),
+ INIT -> STANDBY: Triggered by device. Device is initialised, and is ready for additional configuration by the user,
+ STANDBY -> ON: Triggered by user. Device reports to be functional,
+ * -> FAULT: Triggered by device. Device has degraded to malfunctional, for example because the connection to the hardware is lost,
+ * -> FAULT: Triggered by user. Emulate a forced malfunction for integration testing purposes,
+ * -> OFF: Triggered by user. Device is turned off. Triggered by the Off() command,
+ FAULT -> INIT: Triggered by user. Device is reinitialised to recover from an error,
+
+ The user triggers their transitions by the commands reflecting the target state (Initialise(), On(), Fault()).
+ """
+ client = 0
+ name_space_index = 0
+ obj = 0
+
+ # -----------------
+ # Device Properties
+ # -----------------
+
+ OPC_Server_Name = device_property(
+ dtype='DevString',
+ mandatory=True
+ )
+
+ OPC_Server_Port = device_property(
+ dtype='DevULong',
+ mandatory=True
+ )
+
+ OPC_Time_Out = device_property(
+ dtype='DevDouble',
+ mandatory=True
+ )
+
+ # ----------
+ # Attributes
+ # ----------
+
+ SDP_mask_RW = attribute(
+ dtype = ('DevBoolean',),
+ max_dim_x = 32,
+ access=AttrWriteType.READ_WRITE,
+ )
+
+ fpga_temp_R = attribute(
+ dtype = ('DevDouble',),
+ max_dim_x = 4,
+ )
+
+
+
+ # ---------------
+ # General methods
+ # ---------------
+
+ def get_sdp_node(self, node):
+ try:
+ return self.sdp_node.get_child(["{}:{}".format(self.name_space_index, node)])
+ except opcua.ua.uaerrors._auto.BadNoMatch:
+ self.error_stream("Could not find SDP node %s", node)
+
+ # Contract with hardware is broken --- cannot recover
+ raise
+
+ def _map_attributes(self):
+ try:
+ self.name_space_index = self.client.get_namespace_index("http://lofar.eu")
+ except Exception as e:
+ self.warn_stream("Cannot determine the OPC-UA name space index. Will try and use the default = 2.")
+ self.name_space_index = 2
+
+ self.obj_node = self.client.get_objects_node()
+ self.sdp_node = self.obj_node.get_child(["{}:SDP".format(self.name_space_index)])
+
+ self.debug_stream("Mapping OPC-UA MP/CP to attributes...")
+
+ self.attribute_mapping["SDP_mask_RW"] = self.get_pcc_node("SDP_mask_RW")
+ self.attribute_mapping["fpga_temp_R"] = self.get_pcc_node("fpga_temp_R")
+
+ self.debug_stream("Mapping OPC-UA MP/CP to attributes done.")
+
+ def init_device(self):
+ """ Instantiates the device in the OFF state. """
+
+ # NOTE: Will delete_device first, if necessary
+ Device.init_device(self)
+
+ self.set_state(DevState.OFF)
+
+ def initialise(self):
+ """Initialises the attributes and properties of the SDP."""
+
+ self.set_state(DevState.INIT)
+
+ # Init the dict that contains attribute to OPC-UA MP/CP mappings.
+ self.attribute_mapping = {}
+
+ # Set default values in the RW/R attributes and add them to
+ # the mapping.
+ self._SDP_mask_RW = numpy.full(32, False)
+ self.attribute_mapping["SDP_mask_RW"] = {}
+ self._fpga_temp_R = numpy.full(4, False)
+ self.attribute_mapping["fpga_temp_R"] = {}
+
+ # Init the dict that contains function to OPC-UA function mappings.
+ self.function_mapping = {}
+
+ self.client = opcua.Client("opc.tcp://{}:{}/".format(self.OPC_Server_Name, self.OPC_Server_Port), self.OPC_Time_Out) # timeout in seconds
+
+ # Connect to OPC-UA -- will set ON state on success in case of a reconnect
+ self.opcua_connection = OPCUAConnection(self.client, self.Standby, self.Fault, self)
+
+ # Explicitly connect
+ if not self.opcua_connection.connect():
+ # hardware or infra is down -- needs fixing first
+ self.Fault()
+ return
+
+ # Retrieve and map server attributes
+ try:
+ self._map_attributes()
+ except Exception as e:
+ self.error_stream("Could not map server interface: %s", e)
+ self.Fault()
+ return
+
+ # Start keep-alive
+ self.opcua_connection.start()
+
+ # Set the masks.
+ #
+ # Attention!
+ # Set the masks only after the OPCUA connection has been
+ # established! The setting of the masks needs to go through
+ # to the server.
+ #
+ # TODO
+ # Read default masks from config DB
+ #self.write_SDP_mask_RW(self._SDP_mask_R)
+
+ # Everything went ok -- go standby.
+ self.set_state(DevState.STANDBY)
+
+
+ def always_executed_hook(self):
+ """Method always executed before any TANGO command is executed."""
+ pass
+
+ @DebugIt()
+ def delete_device(self):
+ """Hook to delete resources allocated in init_device.
+
+ This method allows for any memory or other resources allocated in the
+ init_device method to be released. This method is called by the device
+ destructor and by the device Init command (a Tango built-in).
+ """
+ self.Off()
+
+
+ # ------------------
+ # Attributes methods
+ # ------------------
+
+ @only_when_on
+ @fault_on_error
+ def read_SDP_mask_RW(self):
+ """Return the SDP_mask_RW attribute."""
+ return self._SDP_mask_RW
+
+ @only_when_on
+ @fault_on_error
+ def write_SDP_mask_RW(self, value):
+ """Set the SDP_mask_RW attribute."""
+ self.attribute_mapping["SDP_mask_RW"].set_value(value.tolist())
+ self._SDP_mask_RW = value
+
+ @only_when_on
+ @fault_on_error
+ def read_fpga_temp_R(self):
+ """Return the fpga_temp_R attribute."""
+ value = numpy.array(self.attribute_mapping["fpga_temp_R"].get_value())
+ self._fpga_temp_R = numpy.array(numpy.split(value, indices_or_sections = 4))
+ return self._fpga_temp_R
+
+
+ # --------
+ # Commands
+ # --------
+
+ @command()
+ @only_in_states([DevState.FAULT, DevState.OFF])
+ @DebugIt()
+ def Initialise(self):
+ """
+ Command to ask for initialisation of this device. Can only be called in FAULT or OFF state.
+
+ :return:None
+ """
+ self.initialise()
+
+ @only_in_states([DevState.INIT])
+ def Standby(self):
+ """
+ Command to ask for initialisation of this device. Can only be called in FAULT or OFF state.
+
+ :return:None
+ """
+ self.set_state(DevState.STANDBY)
+
+ @command()
+ @only_in_states([DevState.STANDBY])
+ @DebugIt()
+ def On(self):
+ """
+ Command to ask for initialisation of this device. Can only be called in FAULT or OFF state.
+
+ :return:None
+ """
+ self.set_state(DevState.ON)
+
+ @command()
+ @DebugIt()
+ def Off(self):
+ """
+ Command to ask for shutdown of this device.
+
+ :return:None
+ """
+ if self.get_state() == DevState.OFF:
+ # Already off. Don't complain.
+ return
+
+ # Turn off
+ self.set_state(DevState.OFF)
+
+ # Stop keep-alive
+ self.opcua_connection.stop()
+
+ # Turn off again, in case of race conditions through reconnecting
+ self.set_state(DevState.OFF)
+
+ @command()
+ @only_in_states([DevState.ON, DevState.INIT, DevState.STANDBY])
+ @DebugIt()
+ def Fault(self):
+ """
+ FAULT state is used to indicate our connection with the OPC-UA server is down.
+
+ This device will try to reconnect once, and transition to the ON state on success.
+
+ If reconnecting fails, the user needs to call Initialise() to retry to restart this device.
+
+ :return:None
+ """
+ self.set_state(DevState.FAULT)
+
+
+# ----------
+# Run server
+# ----------
+def main(args=None, **kwargs):
+ """Main function of the SDP module."""
+ return run((SDP,), args=args, **kwargs)
+
+
+if __name__ == '__main__':
+ main()
diff --git a/SDP/SDP/__init__.py b/SDP/SDP/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..cf68b03729a1a4d562556c9765b9e7389fd49b18
--- /dev/null
+++ b/SDP/SDP/__init__.py
@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+#
+# This file is part of the SDP project
+#
+#
+#
+# Distributed under the terms of the APACHE license.
+# See LICENSE.txt for more info.
+
+"""SDP Device Server for LOFAR2.0
+
+"""
+
+from . import release
+from .SDP import SDP, main
+
+__version__ = release.version
+__version_info__ = release.version_info
+__author__ = release.author
diff --git a/SDP/SDP/__main__.py b/SDP/SDP/__main__.py
new file mode 100644
index 0000000000000000000000000000000000000000..5ef0710c551b94138cfbe4b1c762af830dae9a62
--- /dev/null
+++ b/SDP/SDP/__main__.py
@@ -0,0 +1,11 @@
+# -*- coding: utf-8 -*-
+#
+# This file is part of the SDP project
+#
+#
+#
+# Distributed under the terms of the APACHE license.
+# See LICENSE.txt for more info.
+
+from SDP import main
+main()
diff --git a/SDP/SDP/opcua_connection.py b/SDP/SDP/opcua_connection.py
new file mode 100644
index 0000000000000000000000000000000000000000..cfcfb74ab00416b79bfc2ccc8fbf263372c9f80c
--- /dev/null
+++ b/SDP/SDP/opcua_connection.py
@@ -0,0 +1,84 @@
+from threading import Thread
+import socket
+import time
+
+__all__ = ["OPCUAConnection"]
+
+class OPCUAConnection(Thread):
+ """
+ Connects to OPC-UA in the foreground or background, and sends HELLO
+ messages to keep a check on the connection. On connection failure, reconnects once.
+ """
+
+ def __init__(self, client, on_func, fault_func, streams, try_interval=2):
+ super().__init__(daemon=True)
+
+ self.client = client
+ self.on_func = on_func
+ self.fault_func = fault_func
+ self.try_interval = try_interval
+ self.streams = streams
+ self.stopping = False
+ self.connected = False
+
+ def _servername(self):
+ return self.client.server_url.geturl()
+
+ def connect(self):
+ try:
+ self.streams.debug_stream("Connecting to server %s", self._servername())
+ self.client.connect()
+ self.connected = True
+ self.streams.debug_stream("Connected to server. Initialising.")
+ return True
+ except socket.error as e:
+ self.streams.error_stream("Could not connect to server %s: %s", self._servername(), e)
+ return False
+
+ def disconnect(self):
+ self.connected = False # always force a reconnect, regardless of a successful disconnect
+
+ try:
+ self.client.disconnect()
+ except Exception as e:
+ self.streams.error_stream("Disconnect from OPC-UA server %s failed: %s", self._servername(), e)
+
+ def run(self):
+ while not self.stopping:
+ # keep trying to connect
+ if not self.connected:
+ if self.connect():
+ self.on_func()
+ else:
+ # we retry only once, to catch exotic network issues. if the infra or hardware is down,
+ # our device cannot help, and must be reinitialised after the infra or hardware is fixed.
+ self.fault_func()
+ return
+
+ # keep checking if the connection is still alive
+ try:
+ while not self.stopping:
+ self.client.send_hello()
+ time.sleep(self.try_interval)
+ except Exception as e:
+ self.streams.error_stream("Lost connection to server %s: %s", self._servername(), e)
+
+ # technically, we may not have dropped the connection, but encounter a different error. so explicitly disconnect.
+ self.disconnect()
+
+ # signal that we're disconnected
+ self.fault_func()
+
+ def stop(self):
+ """
+ Stop connecting & disconnect. Can take a few seconds for the timeouts to hit.
+ """
+
+ if not self.ident:
+ # have not yet been started, so nothing to do
+ return
+
+ self.stopping = True
+ self.join()
+
+ self.disconnect()
diff --git a/SDP/SDP/release.py b/SDP/SDP/release.py
new file mode 100644
index 0000000000000000000000000000000000000000..74a9dd436a73d6acd8d9c7918c63dfc95b49ca09
--- /dev/null
+++ b/SDP/SDP/release.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+#
+# This file is part of the SDP project
+#
+#
+#
+# Distributed under the terms of the APACHE license.
+# See LICENSE.txt for more info.
+
+"""Release information for Python Package"""
+
+name = """tangods-sdp"""
+version = "1.0.0"
+version_info = version.split(".")
+description = """"""
+author = "Thomas Juerges"
+author_email = "jurges at astron.nl"
+license = """APACHE"""
+url = """https://git.astron.nl/lofar2.0/tango.git"""
+copyright = """"""
diff --git a/SDP/SDP/wrappers.py b/SDP/SDP/wrappers.py
new file mode 100644
index 0000000000000000000000000000000000000000..9dbc45a68dc850b36bd30a0a5b8664d104b58e30
--- /dev/null
+++ b/SDP/SDP/wrappers.py
@@ -0,0 +1,53 @@
+from tango import DevState, Except
+from functools import wraps
+import traceback
+
+__all__ = ["only_in_states", "only_when_on", "fault_on_error"]
+
+def only_in_states(allowed_states):
+ """
+ Wrapper to call and return the wrapped function if the device is
+ in one of the given states. Otherwise a PyTango exception is thrown.
+ """
+ def wrapper(func):
+ @wraps(func)
+ def state_check_wrapper(self, *args, **kwargs):
+ if self.get_state() in allowed_states:
+ return func(self, *args, **kwargs)
+
+ self.warn_stream("Illegal command: Function %s can only be called in states %s. Current state: %s" % (func.__name__, allowed_states, self.get_state()))
+ Except.throw_exception("IllegalCommand", "Function can only be called in states %s. Current state: %s" % (allowed_states, self.get_state()), func.__name__)
+
+ return state_check_wrapper
+
+ return wrapper
+
+def only_when_on(func):
+ """
+ Wrapper to call and return the wrapped function if the device is
+ in the ON state. Otherwise None is returned and nothing
+ will be called.
+ """
+ @wraps(func)
+ def when_on_wrapper(self, *args, **kwargs):
+ if self.get_state() == DevState.ON:
+ return func(self, *args, **kwargs)
+
+ return None
+
+ return when_on_wrapper
+
+def fault_on_error(func):
+ """
+ Wrapper to catch exceptions. Sets the device in a FAULT state if any occurs.
+ """
+ @wraps(func)
+ def error_wrapper(self, *args, **kwargs):
+ try:
+ return func(self, *args, **kwargs)
+ except Exception as e:
+ self.error_stream("Function failed. Trace: %s", traceback.format_exc())
+ self.Fault()
+ return None
+
+ return error_wrapper
diff --git a/SDP/requirements.txt b/SDP/requirements.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a0195dd42b98b0f3194e55e91cded17608ed6ee3
--- /dev/null
+++ b/SDP/requirements.txt
@@ -0,0 +1,2 @@
+opcua >= 0.98.9
+numpy
diff --git a/SDP/setup.py b/SDP/setup.py
new file mode 100644
index 0000000000000000000000000000000000000000..65c33ca7beb896c0f77e9acea2ad3dc311c33cd2
--- /dev/null
+++ b/SDP/setup.py
@@ -0,0 +1,42 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# This file is part of the SDP project
+#
+#
+#
+# Distributed under the terms of the APACHE license.
+# See LICENSE.txt for more info.
+
+import os
+import sys
+from setuptools import setup
+
+setup_dir = os.path.dirname(os.path.abspath(__file__))
+
+# make sure we use latest info from local code
+sys.path.insert(0, setup_dir)
+
+readme_filename = os.path.join(setup_dir, 'README.rst')
+with open(readme_filename) as file:
+ long_description = file.read()
+
+release_filename = os.path.join(setup_dir, 'SDP', 'release.py')
+exec(open(release_filename).read())
+
+pack = ['SDP']
+
+setup(name=name,
+ version=version,
+ description='',
+ packages=pack,
+ include_package_data=True,
+ test_suite="test",
+ entry_points={'console_scripts':['SDP = SDP:main']},
+ author='jurges',
+ author_email='jurges at astron.nl',
+ license='APACHE',
+ long_description=long_description,
+ url='www.tango-controls.org',
+ platforms="Unix Like"
+ )