Added support for adaptive orbit feedback and spectral analysis
This commit is contained in:
@ -1,261 +1,71 @@
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import datetime
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import re
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import numpy as np
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import yaml
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import os
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import json
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import copy
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from threading import Thread
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import epics
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class Snap:
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def __init__(self,filename='/sf/data/applications/snapshot/req/op/SF_settings.yaml'):
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# things to do:
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# 1. Read a snapshot file (not request file)
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# 2. Save a snapshot file
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# 3. add parameters and performance channels (e.g. AT photon energies)
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self.pvs = self.parseYAML(filename)
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self.doAbort = False
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def parseSnapShotReqYAML(filename):
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# read the snapshot request file
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# returns a list of PV names
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if not filename:
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filename = '/sf/data/applications/snapshot/req/op/SF_settings.yaml'
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pvs = []
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path = os.path.dirname(filename)
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with open(filename) as f:
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try:
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content = yaml.load(f, Loader=yaml.SafeLoader)
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if 'include' in content.keys():
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if len(content['include']) > 0:
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for cont in content['include']:
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retpv = parseSnapShotReqYAML(path+'/'+cont['name'])
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if 'macros' in cont.keys():
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retpv = applyReqMacro(retpv,cont['macros'])
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pvs = pvs + retpv
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if 'pvs' in content.keys():
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if 'list' in content['pvs']:
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for pv in content['pvs']['list']:
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pvs.append(pv['name'])
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return pvs
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return None
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except yaml.YAMLError as e:
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print(e)
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return None
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return None
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def my_caget_many(self):
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# this skips quite some channels - don't know why?
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def applyReqMacro(pvs_in,macros):
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pvs = []
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for macro in macros:
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for key in macro:
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tag='$('+key+')'
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for pv in pvs_in:
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if tag in pv:
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pvs.append(pv.replace(tag,macro[key]))
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for pv in pvs_in: # copy the ones without macro
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if not '$(' in pv:
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pvs.append(pv)
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return pvs
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pvdata = {}
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pvchids = []
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# create, don't connect or create callbacks
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for name in self.pvs:
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chid = epics.ca.create_channel(name, connect=False, auto_cb=False) # note 1
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pvchids.append(chid)
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# connect
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for chid in pvchids:
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print(epics.ca.name(chid))
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epics.ca.connect_channel(chid)
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# request get, but do not wait for result
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epics.ca.poll()
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for chid in pvchids:
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print(epics.ca.name(chid))
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epics.ca.get(chid, wait=False) # note 2
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# now wait for get() to complete
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epics.ca.poll()
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for chid in pvchids:
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print(epics.ca.name(chid))
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val = epics.ca.get_complete(chid,timeout=0.5)
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if not val:
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pvdata[epics.ca.name(chid)] = np.array([val])
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epics.ca.clear_cache()
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return pvdata
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def abort(self):
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self.doAbort=True
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print('Aborting Snap')
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def getSnapValues(self,force=True):
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self.doAbort=False
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ret={}
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if self.pvs:
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# ret=self.my_caget_many()
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val = epics.caget_many(self.pvs)
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for i,pv in enumerate(self.pvs):
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if val[i]: # filter out None values
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ret[pv]={'val':float(val[i])}
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epics.ca.clear_cache()
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return ret,{}
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#-------------
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# routines to parse the OP YAML file
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def applyMacro(self,pvs_in,macros):
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pvs = []
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for macro in macros:
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for key in macro:
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tag='$('+key+')'
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for pv in pvs_in:
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if tag in pv:
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pvs.append(pv.replace(tag,macro[key]))
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for pv in pvs_in: # copy the ones without macro
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if not '$(' in pv:
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pvs.append(pv)
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return pvs
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def parseYAML(self,filename='/sf/data/applications/snapshot/req/op/SF_settings.yaml'):
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pvs = []
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path = os.path.dirname(filename)
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with open(filename) as f:
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try:
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content = yaml.load(f, Loader=yaml.SafeLoader)
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if 'include' in content.keys():
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if len(content['include']) > 0:
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for cont in content['include']:
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retpv = self.parseYAML(path+'/'+cont['name'])
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if 'macros' in cont.keys():
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retpv = self.applyMacro(retpv,cont['macros'])
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pvs = pvs + retpv
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if 'pvs' in content.keys():
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if 'list' in content['pvs']:
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for pv in content['pvs']['list']:
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pvs.append(pv['name'])
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return pvs
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return None
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except yaml.YAMLError as e:
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print(e)
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return None
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return None
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def getSnap(pvs=None):
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if not isinstance(pvs,list):
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pvs = parseSnapShotReqYAML(pvs)
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if not pvs:
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return
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ret={}
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val = epics.caget_many(pvs)
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for i,pv in enumerate(pvs):
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if val[i]: # filter out None values
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ret[pv]=float(val[i])
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epics.ca.clear_cache()
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return ret
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class Old:
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def __init__(self):
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self.filename = filename
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print('Estbalishing snapshot with request file:', filename,flush=True)
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self.savepath = savepath
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self.tolerance = 0.0005
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self.pvnames = []
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self.pvs = []
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self.mppvnames = []
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self.mppvs = []
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self.machinepar = []
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self.message = ''
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if self.filename:
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self.openRequestFile(self.filename)
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def openRequestFile(self, filename):
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self.filename = filename
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self.rootname = self.filename.split('/')[-1]
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isReq = True
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if '.yaml' in filename:
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isReq = False
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# req_file = SnapshotReqFile(path=str(self.filename))
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if newVersion:
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if '.yaml' in filename:
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req_file = SnapshotJsonFile(path=str(self.filename))
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else:
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req_file = SnapshotReqFile(path=str(self.filename))
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pvs_list= req_file.read()[0]
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print('PV List:-------------------------')
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for i in range(len(pvs_list)):
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print(pvs_list[i])
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print(req_file.read()[1])
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else:
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if '.yaml' in filename:
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self.filename=None
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self.rootname = None
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print('YAML files not supported')
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return
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req_file = SnapshotReqFile(str(self.filename))
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pvs_list = req_file.read()
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self.pvnames.clear()
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self.machinepar.clear()
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for ele in pvs_list:
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if isinstance(ele, list):
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self.pvnames = ele
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elif isinstance(ele, dict):
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if 'machine_params' in ele.keys():
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self.machinepar = ele['machine_params']
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Thread(target=self.connectPVs).start()
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def connectPVs(self):
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self.pvs = [PV(pv, auto_monitor=False) for pv in self.pvnames]
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con = [pv.wait_for_connection(timeout=0.2) for pv in self.pvs]
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pvscon=[]
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for i, val in enumerate(con):
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if val is False:
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print('Cannot connect to PV:', self.pvs[i].pvname,flush=True)
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else:
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pvscon.append(self.pvs[i])
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self.pvs = copy.deepcopy(pvscon)
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if isinstance(self.machinepar,list):
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self.mppvs = [PV(self.machinepar[key], auto_monitor=False) for key in self.machinepar]
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else:
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self.mppvs = [PV(self.machinepar[key], auto_monitor=False) for key in self.machinepar.keys()]
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con = [pv.wait_for_connection(timeout=0.2) for pv in self.mppvs]
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pvscon.clear()
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for i, val in enumerate(con):
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if val is False:
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print('Cannot connect to mPV:', self.mppvs[i].pvname,flush=True)
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else:
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pvscon.append(self.mppvs[i])
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self.mppvs=copy.deepcopy(pvscon)
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def getSnapValues(self, force=True):
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values = {}
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val = [pv.get(timeout=0.6, use_monitor=False) for pv in self.pvs]
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for i, pv in enumerate(self.pvs):
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if val[i] is None:
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if force:
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continue
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else:
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return False
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else:
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values[pv.pvname] = {
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"raw_name": pv.pvname, "val": val[i], "EGU": pv.units, "prec": pv.precision}
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mvalues = {}
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val = [pv.get(timeout=0.6, use_monitor=False) for pv in self.mppvs]
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for i, pv in enumerate(self.mppvs):
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if val[i] is None:
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if force:
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continue
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else:
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return False
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else:
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mvalues[pv.pvname] = {"value": val[i],
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"units": pv.units, "precision": pv.precision}
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return values, mvalues
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def save(self, labels=[], comment="Generated by SFBD-Package", force=True):
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if self.filename is None:
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self.message = 'No Request File Loaded'
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return False
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val, mval = self.getSnapValues(force)
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if isinstance(val, bool) and val == False:
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self.message = 'Unsuccesful reading of PV channels (unforced access)'
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return False
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# construct file name
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datetag = datetime.datetime.now().strftime('%Y%m%d_%H%M%S')
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root = self.rootname.split('.req')[0]
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files = self.savepath+root+'_'+datetag+'.snap'
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filel = self.savepath+root+'_latest.snap'
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# reshuffle from mval to keyword based machine values
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mmval = {}
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for key in self.machinepar.keys():
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if self.machinepar[key] in mval.keys():
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mmval[key] = mval[self.machinepar[key]]
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# save file
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parse_to_save_file(
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val, files, macros=None, symlink_path=filel, comment=comment,
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labels=[],
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req_file_name=self.rootname, machine_params=mmval)
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self.message = 'Snapshot saved to '+files
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return True
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def restore(self,filename,refilter='',force=True):
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filepath=self.savepath+filename
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prog=re.compile(refilter)
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save_pvs=parse_from_save_file(filepath)
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res={}
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for ele in save_pvs:
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if isinstance(ele,dict):
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for key in ele.keys():
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if prog.match(key):
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res[key]=ele[key]['value']
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for pv in self.pvs:
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if pv.pvname in res.keys():
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val=pv.get()
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if val is None or np.abs(val-res[pv.pvname]) > self.tolerance:
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pv.put(res[pv.pvname])
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self.message ='Snap restored'
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