Merge branch 'L2SS-652-investigate-hdbpp-python' into 'master'

Resolve L2SS-652 "Investigate hdbpp python" Closes L2SS-652 See merge request !268

Merge branch 'L2SS-652-investigate-hdbpp-python' into 'master'
cfd036df · Stefano Di Frischia · d89e0bc0 · 84884977 · cfd036df · cfd036df
Commit cfd036df authored 3 years ago by Stefano Di Frischia
--- a/.gitmodules
+++ b/.gitmodules
@@ -2,3 +2,6 @@
 	path = docker-compose/tango-prometheus-exporter/ska-tango-grafana-exporter
 	url = https://git.astron.nl/lofar2.0/ska-tango-grafana-exporter.git
 	branch = station-control
+[submodule "tangostationcontrol/tangostationcontrol/toolkit/libhdbpp-python"]
+	path = tangostationcontrol/tangostationcontrol/toolkit/libhdbpp-python
+	url = https://gitlab.com/tango-controls/hdbpp/libhdbpp-python
--- a/jupyter-notebooks/HdbppReader_demonstrator.ipynb
+++ b/jupyter-notebooks/HdbppReader_demonstrator.ipynb
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "id": "d0328351",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import sys, time\n",
+    "sys.path.append('/hosthome/tango/tangostationcontrol/tangostationcontrol/toolkit/libhdbpp-python')\n",
+    "from hdbpp_reader.timescaledb import TimescaleDbReader"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "id": "c2295969",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Initialise a Reader object\n",
+    "reader = TimescaleDbReader({'database':'hdb', 'user':'postgres', 'password':'password', 'port':5432,'host':'archiver-timescale'})"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "id": "24cd0dbc",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "{'user': 'postgres',\n",
+       " 'password': 'password',\n",
+       " 'host': 'archiver-timescale',\n",
+       " 'database': 'hdb',\n",
+       " 'port': 5432}"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "reader.parse_config('postgres:password@archiver-timescale:5432/hdb')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "id": "2e01bf2a",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "<connection object at 0x7fcf8f18ee08; dsn: 'user=postgres password=xxx dbname=hdb host=archiver-timescale port=5432', closed: 0>"
+      ]
+     },
+     "execution_count": 6,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# Check connection\n",
+    "reader.get_connection()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "id": "582e2c9e",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "['tango://databaseds:10000/stat/sdp/1/fpga_temp_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/version_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/opcua_missing_attributes_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_led_green_on_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_led_green_on_rw',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_led_red_on_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_led_red_on_rw',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_mask_rw',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pcb_id_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pcb_number_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pcb_version_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_1v8_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_2v5_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_3v3_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_analog_on_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_digital_on_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_good_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_temp_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recvtr_i2c_error_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recvtr_monitor_rate_rw',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recvtr_translator_busy_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_led_colour_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_error_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recv_iout_error_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recv_temp_error_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recv_vout_error_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/state',\n",
+       " 'tango://databaseds:10000/stat/recv/1/status',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/version_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/opcua_missing_attributes_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_enable_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_enable_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_eth_destination_mac_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_eth_destination_mac_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_ip_destination_address_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_ip_destination_address_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_udp_destination_port_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_udp_destination_port_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_scale_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_scale_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_boot_image_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_boot_image_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_global_node_index_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_pps_present_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_pps_capture_cnt_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_pps_expected_cnt_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_pps_expected_cnt_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_processing_enable_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_processing_enable_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_scrap_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_scrap_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_antenna_band_index_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_block_period_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_f_adc_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_fsub_type_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_nyquist_sampling_zone_index_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_nyquist_sampling_zone_index_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_observation_id_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_observation_id_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_station_id_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_station_id_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_time_since_last_pps_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/tr_fpga_mask_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/tr_sdp_config_first_fpga_nr_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/tr_sdp_config_nof_beamsets_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/tr_sdp_config_nof_fpgas_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/tr_start_time_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/tr_tod_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/tr_tod_pps_delta_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_bsn_monitor_input_bsn_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_bsn_monitor_input_nof_packets_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_bsn_monitor_input_nof_valid_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_bsn_monitor_input_nof_err_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_error_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_processing_error_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_input_error_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/state',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/status',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_firmware_version_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/fpga_hardware_version_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/tr_fpga_mask_rw',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/tr_fpga_communication_error_r',\n",
+       " 'tango://databaseds:10000/stat/sdp/1/tr_software_version_r']"
+      ]
+     },
+     "execution_count": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# Get the list of all the archived attributes\n",
+    "reader.get_attributes()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "id": "9f985ceb",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "['tango://databaseds:10000/stat/recv/1/version_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/opcua_missing_attributes_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_led_green_on_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_led_green_on_rw',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_led_red_on_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_led_red_on_rw',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_mask_rw',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pcb_id_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pcb_number_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pcb_version_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_1v8_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_2v5_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_3v3_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_analog_on_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_digital_on_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_pwr_good_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_temp_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recvtr_i2c_error_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recvtr_monitor_rate_rw',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recvtr_translator_busy_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_led_colour_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/rcu_error_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recv_iout_error_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recv_temp_error_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/recv_vout_error_r',\n",
+       " 'tango://databaseds:10000/stat/recv/1/state',\n",
+       " 'tango://databaseds:10000/stat/recv/1/status']"
+      ]
+     },
+     "execution_count": 8,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# Given a name pattern, return a list of archived attributes\n",
+    "device_name = 'STAT/RECV/1'\n",
+    "reader.get_attributes(pattern=f'*{device_name}*'.lower())"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "id": "5517c508",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "1"
+      ]
+     },
+     "execution_count": 9,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# Check if an attribute is archived\n",
+    "attr_name = 'rcu_mask_rw'\n",
+    "reader.is_attribute_archived(f'{device_name}/{attr_name}'.lower())"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "id": "740064f3",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "{}"
+      ]
+     },
+     "execution_count": 10,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# Return the list of the last n value for a given attribute(s)\n",
+    "# ! Cannot figure out why it does not work ... on the other hand, the relative code \n",
+    "# in the next cell works!\n",
+    "a = 'tango://databaseds:10000/stat/sdp/1/fpga_temp_r'\n",
+    "columns = [\"value_r\", \"value_w\", \"quality\", \"att_error_desc_id\"]\n",
+    "reader.get_last_attributes_values(attributes=a,columns=columns,n=3)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 11,
+   "id": "d48fe536",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[(datetime.datetime(2022, 3, 9, 12, 0, 27, 686930, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  1),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 38, 34, 497576, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  2),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 38, 23, 838368, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  2)]"
+      ]
+     },
+     "execution_count": 11,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "reader._cursor.execute(\"SELECT att_conf_id, table_name, att_name FROM att_conf WHERE att_name LIKE %s;\", ('%'+a+'%',))\n",
+    "att_id = reader._cursor.fetchall()\n",
+    "\n",
+    "reader._cursor.execute(f\"SELECT data_time, value_r, value_w, quality, att_error_desc_id FROM {att_id[0][1]} WHERE att_conf_id={att_id[0][0]} ORDER BY data_time DESC LIMIT 3\")\n",
+    "reader._cursor.fetchall()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "id": "fcab2a21",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[(datetime.datetime(2022, 3, 9, 12, 0, 27, 686930, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
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+       "  1),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 38, 34, 497576, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  2),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 38, 23, 838368, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  2),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 38, 23, 401983, tzinfo=datetime.timezone.utc),\n",
+       "  [0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
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+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0],\n",
+       "  None,\n",
+       "  0,\n",
+       "  None),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 38, 12, 908590, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  2),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 38, 12, 398194, tzinfo=datetime.timezone.utc),\n",
+       "  [0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
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+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0],\n",
+       "  None,\n",
+       "  0,\n",
+       "  None),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 38, 1, 974671, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  2),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 38, 1, 400801, tzinfo=datetime.timezone.utc),\n",
+       "  [0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
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+       "   0.0,\n",
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+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0],\n",
+       "  None,\n",
+       "  0,\n",
+       "  None),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 37, 51, 57525, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  2),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 37, 50, 398277, tzinfo=datetime.timezone.utc),\n",
+       "  [0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
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+       "  None,\n",
+       "  0,\n",
+       "  None),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 37, 40, 124000, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  2),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 37, 39, 402424, tzinfo=datetime.timezone.utc),\n",
+       "  [0.0,\n",
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+       "  None,\n",
+       "  1,\n",
+       "  2),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 31, 4, 405487, tzinfo=datetime.timezone.utc),\n",
+       "  [0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0],\n",
+       "  None,\n",
+       "  0,\n",
+       "  None),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 30, 54, 841743, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  2),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 30, 54, 402356, tzinfo=datetime.timezone.utc),\n",
+       "  [0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0],\n",
+       "  None,\n",
+       "  0,\n",
+       "  None),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 30, 44, 727440, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  2),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 30, 44, 400452, tzinfo=datetime.timezone.utc),\n",
+       "  [0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0],\n",
+       "  None,\n",
+       "  0,\n",
+       "  None),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 30, 33, 414200, tzinfo=datetime.timezone.utc),\n",
+       "  [0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0,\n",
+       "   0.0],\n",
+       "  None,\n",
+       "  0,\n",
+       "  None),\n",
+       " (datetime.datetime(2022, 3, 8, 15, 30, 15, 378183, tzinfo=datetime.timezone.utc),\n",
+       "  None,\n",
+       "  None,\n",
+       "  1,\n",
+       "  1)]"
+      ]
+     },
+     "execution_count": 12,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# Get the last attribute values given a start date and optionally a stop date\n",
+    "reader.get_attribute_values(a, start_date='2022-03-08 00:00:00')"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "StationControl",
+   "language": "python",
+   "name": "stationcontrol"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.7.3"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}
+%% Cell type:code id:d0328351 tags:
+``` python
+import sys, time
+sys.path.append('/hosthome/tango/tangostationcontrol/tangostationcontrol/toolkit/libhdbpp-python')
+from hdbpp_reader.timescaledb import TimescaleDbReader
+```
+%% Cell type:code id:c2295969 tags:
+``` python
+# Initialise a Reader object
+reader = TimescaleDbReader({'database':'hdb', 'user':'postgres', 'password':'password', 'port':5432,'host':'archiver-timescale'})
+```
+%% Cell type:code id:24cd0dbc tags:
+``` python
+reader.parse_config('postgres:password@archiver-timescale:5432/hdb')
+```
+%% Output
+    {'user': 'postgres',
+     'password': 'password',
+     'host': 'archiver-timescale',
+     'database': 'hdb',
+     'port': 5432}
+%% Cell type:code id:2e01bf2a tags:
+``` python
+# Check connection
+reader.get_connection()
+```
+%% Output
+    <connection object at 0x7fcf8f18ee08; dsn: 'user=postgres password=xxx dbname=hdb host=archiver-timescale port=5432', closed: 0>
+%% Cell type:code id:582e2c9e tags:
+``` python
+# Get the list of all the archived attributes
+reader.get_attributes()
+```
+%% Output
+    ['tango://databaseds:10000/stat/sdp/1/fpga_temp_r',
+     'tango://databaseds:10000/stat/recv/1/version_r',
+     'tango://databaseds:10000/stat/recv/1/opcua_missing_attributes_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_led_green_on_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_led_green_on_rw',
+     'tango://databaseds:10000/stat/recv/1/rcu_led_red_on_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_led_red_on_rw',
+     'tango://databaseds:10000/stat/recv/1/rcu_mask_rw',
+     'tango://databaseds:10000/stat/recv/1/rcu_pcb_id_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pcb_number_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pcb_version_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_1v8_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_2v5_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_3v3_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_analog_on_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_digital_on_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_good_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_temp_r',
+     'tango://databaseds:10000/stat/recv/1/recvtr_i2c_error_r',
+     'tango://databaseds:10000/stat/recv/1/recvtr_monitor_rate_rw',
+     'tango://databaseds:10000/stat/recv/1/recvtr_translator_busy_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_led_colour_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_error_r',
+     'tango://databaseds:10000/stat/recv/1/recv_iout_error_r',
+     'tango://databaseds:10000/stat/recv/1/recv_temp_error_r',
+     'tango://databaseds:10000/stat/recv/1/recv_vout_error_r',
+     'tango://databaseds:10000/stat/recv/1/state',
+     'tango://databaseds:10000/stat/recv/1/status',
+     'tango://databaseds:10000/stat/sdp/1/version_r',
+     'tango://databaseds:10000/stat/sdp/1/opcua_missing_attributes_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_enable_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_enable_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_eth_destination_mac_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_eth_destination_mac_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_ip_destination_address_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_ip_destination_address_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_udp_destination_port_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_hdr_udp_destination_port_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_scale_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_beamlet_output_scale_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_boot_image_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_boot_image_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_global_node_index_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_pps_present_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_pps_capture_cnt_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_pps_expected_cnt_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_pps_expected_cnt_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_processing_enable_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_processing_enable_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_scrap_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_scrap_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_antenna_band_index_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_block_period_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_f_adc_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_fsub_type_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_nyquist_sampling_zone_index_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_nyquist_sampling_zone_index_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_observation_id_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_observation_id_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_station_id_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_sdp_info_station_id_rw',
+     'tango://databaseds:10000/stat/sdp/1/fpga_time_since_last_pps_r',
+     'tango://databaseds:10000/stat/sdp/1/tr_fpga_mask_r',
+     'tango://databaseds:10000/stat/sdp/1/tr_sdp_config_first_fpga_nr_r',
+     'tango://databaseds:10000/stat/sdp/1/tr_sdp_config_nof_beamsets_r',
+     'tango://databaseds:10000/stat/sdp/1/tr_sdp_config_nof_fpgas_r',
+     'tango://databaseds:10000/stat/sdp/1/tr_start_time_r',
+     'tango://databaseds:10000/stat/sdp/1/tr_tod_r',
+     'tango://databaseds:10000/stat/sdp/1/tr_tod_pps_delta_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_bsn_monitor_input_bsn_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_bsn_monitor_input_nof_packets_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_bsn_monitor_input_nof_valid_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_bsn_monitor_input_nof_err_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_error_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_processing_error_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_input_error_r',
+     'tango://databaseds:10000/stat/sdp/1/state',
+     'tango://databaseds:10000/stat/sdp/1/status',
+     'tango://databaseds:10000/stat/sdp/1/fpga_firmware_version_r',
+     'tango://databaseds:10000/stat/sdp/1/fpga_hardware_version_r',
+     'tango://databaseds:10000/stat/sdp/1/tr_fpga_mask_rw',
+     'tango://databaseds:10000/stat/sdp/1/tr_fpga_communication_error_r',
+     'tango://databaseds:10000/stat/sdp/1/tr_software_version_r']
+%% Cell type:code id:9f985ceb tags:
+``` python
+# Given a name pattern, return a list of archived attributes
+device_name = 'STAT/RECV/1'
+reader.get_attributes(pattern=f'*{device_name}*'.lower())
+```
+%% Output
+    ['tango://databaseds:10000/stat/recv/1/version_r',
+     'tango://databaseds:10000/stat/recv/1/opcua_missing_attributes_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_led_green_on_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_led_green_on_rw',
+     'tango://databaseds:10000/stat/recv/1/rcu_led_red_on_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_led_red_on_rw',
+     'tango://databaseds:10000/stat/recv/1/rcu_mask_rw',
+     'tango://databaseds:10000/stat/recv/1/rcu_pcb_id_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pcb_number_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pcb_version_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_1v8_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_2v5_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_3v3_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_analog_on_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_digital_on_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_pwr_good_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_temp_r',
+     'tango://databaseds:10000/stat/recv/1/recvtr_i2c_error_r',
+     'tango://databaseds:10000/stat/recv/1/recvtr_monitor_rate_rw',
+     'tango://databaseds:10000/stat/recv/1/recvtr_translator_busy_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_led_colour_r',
+     'tango://databaseds:10000/stat/recv/1/rcu_error_r',
+     'tango://databaseds:10000/stat/recv/1/recv_iout_error_r',
+     'tango://databaseds:10000/stat/recv/1/recv_temp_error_r',
+     'tango://databaseds:10000/stat/recv/1/recv_vout_error_r',
+     'tango://databaseds:10000/stat/recv/1/state',
+     'tango://databaseds:10000/stat/recv/1/status']
+%% Cell type:code id:5517c508 tags:
+``` python
+# Check if an attribute is archived
+attr_name = 'rcu_mask_rw'
+reader.is_attribute_archived(f'{device_name}/{attr_name}'.lower())
+```
+%% Output
+    1
+%% Cell type:code id:740064f3 tags:
+``` python
+# Return the list of the last n value for a given attribute(s)
+# ! Cannot figure out why it does not work ... on the other hand, the relative code
+# in the next cell works!
+a = 'tango://databaseds:10000/stat/sdp/1/fpga_temp_r'
+columns = ["value_r", "value_w", "quality", "att_error_desc_id"]
+reader.get_last_attributes_values(attributes=a,columns=columns,n=3)
+```
+%% Output
+    {}
+%% Cell type:code id:d48fe536 tags:
+``` python
+reader._cursor.execute("SELECT att_conf_id, table_name, att_name FROM att_conf WHERE att_name LIKE %s;", ('%'+a+'%',))
+att_id = reader._cursor.fetchall()
+reader._cursor.execute(f"SELECT data_time, value_r, value_w, quality, att_error_desc_id FROM {att_id[0][1]} WHERE att_conf_id={att_id[0][0]} ORDER BY data_time DESC LIMIT 3")
+reader._cursor.fetchall()
+```
+%% Output
+    [(datetime.datetime(2022, 3, 9, 12, 0, 27, 686930, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      1),
+     (datetime.datetime(2022, 3, 8, 15, 38, 34, 497576, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      2),
+     (datetime.datetime(2022, 3, 8, 15, 38, 23, 838368, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      2)]
+%% Cell type:code id:fcab2a21 tags:
+``` python
+# Get the last attribute values given a start date and optionally a stop date
+reader.get_attribute_values(a, start_date='2022-03-08 00:00:00')
+```
+%% Output
+    [(datetime.datetime(2022, 3, 9, 12, 0, 27, 686930, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      1),
+     (datetime.datetime(2022, 3, 8, 15, 38, 34, 497576, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      2),
+     (datetime.datetime(2022, 3, 8, 15, 38, 23, 838368, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      2),
+     (datetime.datetime(2022, 3, 8, 15, 38, 23, 401983, tzinfo=datetime.timezone.utc),
+      [0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0],
+      None,
+      0,
+      None),
+     (datetime.datetime(2022, 3, 8, 15, 38, 12, 908590, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      2),
+     (datetime.datetime(2022, 3, 8, 15, 38, 12, 398194, tzinfo=datetime.timezone.utc),
+      [0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0],
+      None,
+      0,
+      None),
+     (datetime.datetime(2022, 3, 8, 15, 38, 1, 974671, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      2),
+     (datetime.datetime(2022, 3, 8, 15, 38, 1, 400801, tzinfo=datetime.timezone.utc),
+      [0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0],
+      None,
+      0,
+      None),
+     (datetime.datetime(2022, 3, 8, 15, 37, 51, 57525, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      2),
+     (datetime.datetime(2022, 3, 8, 15, 37, 50, 398277, tzinfo=datetime.timezone.utc),
+      [0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0],
+      None,
+      0,
+      None),
+     (datetime.datetime(2022, 3, 8, 15, 37, 40, 124000, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      2),
+     (datetime.datetime(2022, 3, 8, 15, 37, 39, 402424, tzinfo=datetime.timezone.utc),
+      [0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0],
+      None,
+      0,
+      None),
+     (datetime.datetime(2022, 3, 8, 15, 37, 29, 194141, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      2),
+     (datetime.datetime(2022, 3, 8, 15, 37, 28, 403995, tzinfo=datetime.timezone.utc),
+      [0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0],
+      None,
+      0,
+      None),
+     (datetime.datetime(2022, 3, 8, 15, 37, 18, 325812, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      2),
+     (datetime.datetime(2022, 3, 8, 15, 37, 17, 414731, tzinfo=datetime.timezone.utc),
+      [0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0,
+       0.0],
+      None,
+      0,
+      None),
+     (datetime.datetime(2022, 3, 8, 15, 37, 7, 423699, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      2),
+     (datetime.datetime(2022, 3, 8, 15, 37, 6, 406963, tzinfo=datetime.timezone.utc),
+      [0.0,
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+     (datetime.datetime(2022, 3, 8, 15, 30, 33, 414200, tzinfo=datetime.timezone.utc),
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+      None,
+      0,
+      None),
+     (datetime.datetime(2022, 3, 8, 15, 30, 15, 378183, tzinfo=datetime.timezone.utc),
+      None,
+      None,
+      1,
+      1)]
--- a/libhdbpp-python @ 7f316826
+++ b/libhdbpp-python @ 7f316826
+Subproject commit 7f3168261290109d64057fd526827bf33089774f
--- a/tangostationcontrol/tox.ini
+++ b/tangostationcontrol/tox.ini
@@ -78,4 +78,4 @@ commands =
 [flake8]
 filename = *.py,.stestr.conf,.txt
 select = W292,B601,B602,T100,M001,F401,B001,B002,B003,B004,B005,B006,B007,B008,B009,B010,B011,B012,B013,B014.B015,B016,B017,B018
-exclude=.tox,.egg-info
+exclude=.tox,.egg-info,libhdbpp-python