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# LHC Signal Monitoring API Package <img src = "https://gitlab.cern.ch/LHCData/lhc-sm-api/raw/master/figures/logo.png" width=25%> This is a package with an API for signal access and processing for the LHC Signal Monitoring project. ## Prerequisites In order to use the API has to be installed with a python package installer as ```python pip install --user lhcsmapi ``` Check the latest version at <a href="https://pypi.org/project/lhcsmapi/">https://pypi.org/project/lhcsmapi/</a> The API relies on external python packages which have to be installed in a similar manner. The list of packages is stored in the <u><i>requirements.txt</i></u> file. The documentation for the API is stored at <a href="http://cern.ch/lhc-sm-api">http://cern.ch/lhc-sm-api</a>. Below please find an excerpt of the code structure and snippets of the most frequently used functions. ## Project structure - cals - CalsDbSignal.py - DetectBmodePattern.py - dbsignal - DbSignal.py - Signal.py - SignalElectrical.py - SignalProcessing.py - SignalUtilities.py - influx - InfluxDbSignal.py - post_mortem - PmDbSignal.py - PmDbRequest.py - metadata - Metadata.py - QpsMetadata.json - FgcMetadata.json - Ipqd2Metadata.json - Ipqd4Metadata.json - Ipqd8Metadata.json - QpsMetadata.json - RbMetadata.json - RqMetadata.json - Time.py - Timer.py ## Time Time class encapsulates provides a set of methods for conversion between various time formats. In addition it provides a generator for days between given periods. Main methods are: - Time.to_unix_timestamp(input, unit='ns') - Time.to_string(input, unit='ns') - Time.to_datetime(input, unit='ns') - Time.to_pandas_timestamp(input, unit='ns') ```python from lhcsmapi.Time import Time stringDate = "2018-05-01 00:00:00" Time.to_unix_timestamp(stringDate, unit = "ns") >>> 1525125600000000000 ``` ```python from lhcsmapi.Time import Time from datetime import datetime dateTime = datetime(2017, 7, 2, 1, 23, 27, 0) Time.to_string(stringDate, unit = "ns") >>> '2017-07-02 01:23:27' ``` ```python from lhcsmapi.Time import Time stringDate = "2019-01-02 23:59:11" Time.to_datetime(stringDate, unit = "ns") >>> datetime.datetime(2019, 1, 2, 23, 59, 11, tzinfo=<DstTzInfo 'Europe/Zurich' CET+1:00:00 STD>) ``` ```python from lhcsmapi.Time import Time stringDate = "2019-07-10 10:23:27.013" Time.to_pandas_timestamp(stringDate, unit = "ns") >>> Timestamp('2019-07-10 10:23:27.013000+0200', tz='Europe/Zurich') ``` - Time.get_query_period_in_unix_time() ```python from lhcsmapi.Time import Time startTimeData = 1426220459491000000 endTimeData = 1426220479491000000 Time.get_query_period_in_unix_time(startTimeData, endTimeData, None, tz='Europe/Zurich') >>> (1426220459491000000, 1426220479491000000) ``` ```python from lhcsmapi.Time import Time startTimeData = 1426220459491000000 durationData = [(20, 's')] Time.get_query_period_in_unix_time(startTimeData, None, durationData, tz='Europe/Zurich') >>> (1426220459491000000, 1426220479491000000) ``` ```python from lhcsmapi.Time import Time startTimeData = 1426220469491000000 durationData = [(10, 's'), (10, 's')] Time.get_query_period_in_unix_time(startTimeData, None, durationData, tz='Europe/Zurich') >>> (1426220459491000000, 1426220479491000000) ``` - Time.daterange(startDate, endDate) ```python from lhcsmapi.Time import Time from datetime import date startDate = date(2014, 1, 1) endDate = date(2014, 1, 3) for singleDate in Time.daterange(startDate, endDate): print(singleDate) >>> 2014-01-01 >>> 2014-01-02 ``` ```python from datetime import date startDate = date(2014, 1, 5) endDate = date(2014, 1, 3) for singleDate in Time.daterange(startDate, endDate): print(singleDate) >>> ``` ## Metadata Metadata class stores information about signal and circuit names. ```python from lhcsmapi import Metadata magnetType = "MB" circuitType = "RB" component = "QPS" magnetTypeToSignalMetadata = Metadata.getMetadata(component, magnetType) magnetTypeToSignalMetadata[magnetType] >>> {'className': 'DQAMCNMB_PMHSU', >>> 'sourcePrefix': 'MB_', >>> 'system': 'QPS', >>> 'source': '*', >>> 'magnetNameRegExp': '[ABC]{1}\\d+[LR]{1}[1-8]{1}', >>> 'uNames': ['U_HDS_1', 'U_HDS_2', 'U_HDS_3', 'U_HDS_4'], >>> 'iNames': ['I_HDS_1', 'I_HDS_2', 'I_HDS_3', 'I_HDS_4'], >>> 'rNames': ['R_HDS_1', 'R_HDS_2', 'R_HDS_3', 'R_HDS_4'], >>> 'dRNames': ['dR_HDS_1', 'dR_HDS_2', 'dR_HDS_3', 'dR_HDS_4'], >>> 'filterNames': ['U_HDS_1', >>> 'U_HDS_2', >>> 'U_HDS_3', >>> 'U_HDS_4', >>> 'I_HDS_1', >>> 'I_HDS_2', >>> 'I_HDS_3', >>> 'I_HDS_4'], >>> 'uNamesCals': ['MB.{}:U_HDS_1', >>> 'MB.{}:U_HDS_2', >>> 'MB.{}:U_HDS_3', >>> 'MB.{}:U_HDS_4'], >>>'iNamesCals': ['MB.{}:I_HDS_1', >>> 'MB.{}:I_HDS_2', >>> 'MB.{}:I_HDS_3', >>> 'MB.{}:I_HDS_4']} ``` ## PmDbQuery PmDbRequest class encapsulates PM database queries in order to simplify the query creation as well as browsing of PM events for a given period. - Expected Success Response ```python from source.post_mortem.PmDbRequest import PmDbRequest source = "*" system = "QPS" className = "DQAMCNMB_PMHSU" selectedDayTimeStamp = 1426201200000000000 eventDurationSeconds = 24*60*60 PmDbRequest.find_events(source, system, className, eventTime = selectedDayTimeStamp, duration = [(eventDurationSeconds, 's')]) >>> [('B20L5', 1426220469491000000), >>> ... ``` - Expected Fail Response:: ```python from source.post_mortem.PmDbRequest import PmDbRequest source = "*" system = "QPS" className = "DQAMCNMB_PMHSU" selectedDayTimeStamp = 1426201200000000000 eventDurationSeconds = 1 PmDbRequest.find_events(source, system, className, eventTime = selectedDayTimeStamp, duration = [(eventDurationSeconds, 's')]) >>> UserWarning: Querying Post Mortem failed using the following query: http://pm-api-pro/v2/pmdata/header/within/duration?system=QPS&className=DQAMCNMB_PMHSU&source=*&fromTimestampInNanos=1426201200000000000&durationInNanos=1000000000 returned no data so an empty string is being returned ``` ## Signal Signal class encapsulates behavior for working with signal databases. It provides read and write methods for accessing Post Mortem, CALS and InfluxDB APIs. <img src = "https://gitlab.cern.ch/LHCData/lhc-sm-api/raw/master/figures/signal.png" width=100%> - CALS Success Response ```python from lhcsmapi.dbsignal.Signal import Signal import pytimber ldb = pytimber.LoggingDB() arcCurrentName = "RPTE.UA47.RB.A45:I_MEAS" startTime = 1426220459491000000 endTime = 1426220479491000000 I_MEAS = Signal().read('cals', name=arcCurrentName, startTime = startTime, endTime = endTime, ldb = ldb) print(I_MEAS.head()) >>> RPTE.UA47.RB.A45:I_MEAS >>> 1.426220e+09 10071.5 >>> 1.426220e+09 10076.5 >>> 1.426220e+09 10081.5 >>> 1.426220e+09 10086.5 >>> 1.426220e+09 10091.5 ``` ```python from lhcsmapi.dbsignal.Signal import Signal import pytimber ldb = pytimber.LoggingDB() arcCurrentName = "RPTE.UA47.RB.A45:I_MEAS" startTime = 1426220459491000000 duration = [(20, 's')] I_MEAS = Signal().read('cals', name=arcCurrentName, startTime = startTime, duration = duration, ldb = ldb) print(I_MEAS.head()) >>> RPTE.UA47.RB.A45:I_MEAS >>> 1.426220e+09 10071.5 >>> 1.426220e+09 10076.5 >>> 1.426220e+09 10081.5 >>> 1.426220e+09 10086.5 >>> 1.426220e+09 10091.5 ``` ```python from lhcsmapi.dbsignal.Signal import Signal import pytimber ldb = pytimber.LoggingDB() arcCurrentName = "RPTE.UA47.RB.A45:I_MEAS" startTime = 1426220469491000000 duration = [(10, 's'), (10, 's')] I_MEAS = Signal().read('cals', name=arcCurrentName, startTime = startTime, duration = duration, ldb = ldb) print(I_MEAS.head()) >>> RPTE.UA47.RB.A45:I_MEAS >>> 1.426220e+09 10071.5 >>> 1.426220e+09 10076.5 >>> 1.426220e+09 10081.5 >>> 1.426220e+09 10086.5 >>> 1.42622