def do_fetch(self):
channel_length = int(self.length)
outdata=np.zeros(1024*2*256+1)
## !! really should put a wrapper around gethjdata to do common stuff
# outfile is only needed if the direct passing of binary won't work
# with tempfile.NamedTemporaryFile(prefix="pyfusion_") as outfile:
ierror, getrets = gethjdata.gethjdata(self.shot,channel_length,self.path,
verbose=VERBOSE, opt=1, ierror=2,
outdata=outdata, outname='')
if ierror != 0:
raise LookupError('hj Okada style data not found for {s}:{c}'.format(s=self.shot, c=self.path))
ch = Channel(self.path,
Coords('dummy', (0,0,0)))
# the intent statement causes the out var to be returned in the result lsit
# looks like the time,data is interleaved in a 1x256 array
# it is fed in as real*64, but returns as real*32! (as per fortran decl)
debug_(pyfusion.DEBUG, 4, key='Heliotron_fetch', msg='after call to getdata')
# timebase in secs (ms in raw data) - could add a preferred unit?
# this is partly allowed for in savez_compressed, newload, and
# for plotting, in the config file.
# important that the 1e-3 be inside the Timebase()
output_data = TimeseriesData(timebase=Timebase(1e-3 * getrets[1::2]),
signal=Signal(getrets[2::2]), channels=ch)
output_data.meta.update({'shot':self.shot})
if pyfusion.VERBOSE>0: print('HJ config name',self.config_name)
output_data.config_name = self.config_name
stprms = get_static_params(shot=self.shot,signal=self.path)
if len(list(stprms)) == 0: # maybe this should be ignored - how do we use it?
raise LookupError(' failure to get params for {shot}:{path}'
.format(shot=self.shot, path=self.path))
output_data.params = stprms
return output_data
def do_fetch(self):
channel_length = int(self.length)
outdata = np.zeros(1024 * 2 * 256 + 1)
## !! really should put a wrapper around gethjdata to do common stuff
# outfile is only needed if the direct passing of binary won't work
# with tempfile.NamedTemporaryFile(prefix="pyfusion_") as outfile:
# get in two steps to make debugging easier
allrets = gethjdata.gethjdata(self.shot,
channel_length,
self.path,
verbose=VERBOSE,
opt=1,
ierror=2,
isample=-1,
outdata=outdata,
outname='')
ierror, isample, getrets = allrets
if ierror != 0:
raise LookupError(
'hj Okada style data not found for {s}:{c}'.format(
s=self.shot, c=self.path))
ch = Channel(self.path, Coords('dummy', (0, 0, 0)))
# the intent statement causes the out var to be returned in the result lsit
# looks like the time,data is interleaved in a 1x256 array
# it is fed in as real*64, but returns as real*32! (as per fortran decl)
debug_(pyfusion.DEBUG,
4,
key='Heliotron_fetch',
msg='after call to getdata')
# timebase in secs (ms in raw data) - could add a preferred unit?
# this is partly allowed for in savez_compressed, newload, and
# for plotting, in the config file.
# important that the 1e-3 be inside the Timebase()
output_data = TimeseriesData(timebase=Timebase(
1e-3 * getrets[1::2][0:isample]),
signal=Signal(getrets[2::2][0:isample]),
channels=ch)
output_data.meta.update({'shot': self.shot})
if pyfusion.VERBOSE > 0: print('HJ config name', self.config_name)
output_data.config_name = self.config_name
stprms = get_static_params(shot=self.shot, signal=self.path)
if len(list(stprms)
) == 0: # maybe this should be ignored - how do we use it?
raise LookupError(
' failure to get params for {shot}:{path}'.format(
shot=self.shot, path=self.path))
output_data.params = stprms
return output_data
def do_fetch(self):
# my W7X shots are of the form from_utc, to_utc
# or date (8dig) and shot (progId)
# the format is in the acquisition properties, to avoid
# repetition in each individual diagnostic
if self.shot[1]>1e9: # we have start and end in UTC
f,t = self.shot
else:
f,t = get_shot_utc(*self.shot)
# A URL STYLE diagnostic - used for a one-off
# this could be moved to setup so that the error info is more complete
if hasattr(self,'url'):
fmt = self.url+'_signal.json?from={shot_f}&upto={shot_t}'
fmt = self.url+'_signal.json?from={shot_f}&upto={shot_t}&nSamples=200000'
params = {}
else: # a pattern-based one - used for arrays of probes
if hasattr(self,'fmt'): # does the diagnostic have one?
fmt = self.fmt
elif hasattr(self.acq,'fmt'): # else use the acq.fmt
fmt = self.acq.fmt
else: # so far we have no quick way to check the server is online
raise LookupError('no fmt - perhaps pyfusion.cfg has been '
'edited because the url is not available')
params = eval('dict('+self.params+')')
if 'upto' not in fmt:
fmt += '_signal.json?from={shot_f}&upto={shot_t}'
if ('nSamples' not in fmt) and (pyfusion.NSAMPLES != 0):
fmt += '&nSamples={ns}'.format(ns=pyfusion.NSAMPLES)
params.update(shot_f=f, shot_t=t)
url = fmt.format(**params)
if pyfusion.CACHE:
print('using wget on {url}'.format(url=url))
os.system('wget -x "{url}"'.format(url=url))
# now read from the local copy - it is in the wd, so only //
# but it seems we need the full path for now
url = url.replace('http://','file:///home/bdb112/pyfusion/working/pyfusion/')
print('now trying the cached copy we just grabbed: {url}'.format(url=url))
if pyfusion.VERBOSE > 0:
print('===> fetching url {u}'.format(u=url))
# seems to take twice as long as timeout requested.
# haven't thought about python3 for the json stuff yet
try:
# dat = json.load(urlopen(url,timeout=pyfusion.TIMEOUT)) works
# but follow example in
# http://webservices.ipp-hgw.mpg.de/docs/howtoREST.html#python,
dat = json.loads(urlopen(url,timeout=pyfusion.TIMEOUT).read().decode())
except socket.timeout:
# should check if this is better tested by the URL module
print('****** first timeout error *****')
dat = json.load(urlopen(url,timeout=3*pyfusion.TIMEOUT))
except Exception as reason:
if pyfusion.VERBOSE:
print('********Exception***** on {c}: {u} \n{r}'
.format(c=self.config_name, u=url, r=reason))
raise
# this form will default to repair = 2 for all LP probes.
default_repair = 2 if 'Desc.82/' in url else 0
# this form follows the config file settings
self.repair = int(self.repair) if hasattr(self, 'repair') else default_repair
dimraw = np.array(dat['dimensions'])
dim = dimraw - dimraw[0]
if self.repair == 0:
pass # leave as is
# need at least this clipping for Langmuir probes in Op1.1
elif self.repair == 1:
dim = np.clip(dim, 0, 1e99)
elif self.repair == 2:
dim, msg = regenerate_dim(dim)
if msg is not None:
print('shot {s}, {c}: {m}'
.format(s=self.shot, c=self.config_name, m=msg))
else:
raise ValueError('repair value of {r} not understood'.format(r=self.repair))
if pyfusion.VERBOSE>2: print('repair',self.repair)
#ch = Channel(self.config_name, Coords('dummy', (0,0,0)))
# this probably should be in base.py
coords = get_coords_for_channel(**self.__dict__)
# used to be bare_chan? should we include - signs?
ch = Channel(self.config_name, coords)
output_data = TimeseriesData(timebase=Timebase(1e-9*dim),
signal=Signal(dat['values']), channels=ch)
output_data.meta.update({'shot': self.shot})
output_data.utc = [dat['dimensions'][0], dat['dimensions'][-1]]
output_data.units = dat['units'] if 'units' in dat else ''
# this is a minor duplication - at least it gets saved via params
params['data_utc'] = output_data.utc
# Warning - this could slow things down! - but allows corrupted time to be re-calculated as algorithms improve.
params['diff_dimraw'] = dimraw
params['diff_dimraw'][1:] = np.diff(dimraw)
params['pyfusion_version'] = pyfusion.version.get_version()
if pyfusion.VERBOSE > 0:
print('shot {s}, config name {c}'
.format(c=self.config_name, s=self.shot))
output_data.config_name = self.config_name
debug_(pyfusion.DEBUG, 2, key='W7XDataFetcher')
output_data.params = params
### the total shot utc. output_data.utc = [f, t]
return output_data
def try_fetch_local(input_data, bare_chan):
""" return data if in the local cache, otherwise None
doesn't work for single channel HJ data.
sgn (not gain) be only be used at the single channel base/fetch level
"""
for each_path in pyfusion.config.get('global', 'localdatapath').split('+'):
# check for multi value shot number, e.g. utc bounds for W7-X data
shot = input_data.shot
# MDSplus style path to access sorted files into folders by shot
path, patt = os.path.split(each_path)
# print(patt)
if len(patt) == 2*len(patt.replace('~','')): # a subdir code based on date
subdir = ''
# reverse the order of both the pattern and the shot so a posn is 0th char
strshot = str(shot[0]) if len(np.shape(shot))>0 else str(shot)
revshot = strshot[::-1]
for i,ch in enumerate(patt):
if (i%2) == 0:
if ch != '~':
raise LookupError("Can't parse {d} as a MDS style subdir"
.format(d=patt))
continue
subdir += revshot[ord(ch) - ord('a')]
else:
subdir = patt
debug_(pyfusion.DEBUG, 3, key='MDS style subdir', msg=each_path)
each_path = os.path.join(path, subdir)
if isinstance(shot, (tuple, list, ndarray)):
shot_str = '{s0}_{s1}'.format(s0=shot[0], s1=shot[1])
else:
shot_str = str(shot)
input_data.localname = os.path.join(each_path, '{shot}_{bc}.npz'
.format(shot=shot_str, bc=bare_chan))
# original - data_filename %filename_dict)
if pyfusion.VERBOSE>2: print(each_path,input_data.localname)
files_exist = os.path.exists(input_data.localname)
debug_(pyfusion.DEBUG, 3, key='try_local_fetch')
if files_exist:
intmp = np.any([st in input_data.localname.lower() for st in
['tmp', 'temp']]) # add anything you wish to warn about
if pyfusion.VERBOSE>0 or intmp:
if intmp:
pyfusion.logging.warning('Using {f} in temporary directory!'
.format(f=input_data.localname))
print('found local data in {f}'. format(f=input_data.localname))
break
if not files_exist:
return None
signal_dict = newload(input_data.localname)
if 'params' in signal_dict and 'name' in signal_dict['params'] and 'W7X_L5' in signal_dict['params']['name']:
if signal_dict['params']['pyfusion_version'] < '0.6.8b':
raise ValueError('probe assignments in error LP11-22 in {fn}'
.format(fn=input_data.localname))
if np.nanmax(signal_dict['timebase']) == 0:
pyfusion.logging.warning('making a fake timebase for {fn}'
.format(fn=input_data.localname))
signal_dict['timebase'] = 2e-6*np.cumsum(1.0 + 0*signal_dict['signal'])
coords = get_coords_for_channel(**input_data.__dict__)
#ch = Channel(bare_chan, Coords('dummy', (0,0,0)))
ch = Channel(bare_chan, coords)
output_data = TimeseriesData(timebase=Timebase(signal_dict['timebase']),
signal=Signal(signal_dict['signal']), channels=ch)
# bdb - used "fetcher" instead of "self" in the "direct from LHD data" version
# when using saved files, should use the name - not input_data.config_name
# it WAS the config_name coming from the raw format.
output_data.config_name = bare_chan
# would be nice to get to the gain here - but how - maybe setup will get it
output_data.meta.update({'shot':input_data.shot})
if 'params' in signal_dict:
output_data.params = signal_dict['params']
if 'utc' in signal_dict['params']:
output_data.utc = signal_dict['params'].get('utc',None)
else:
# yes, it seems like duplication, but no
output_data.utc = None
output_data.params = dict(comment = 'old npz file has no params')
oldsrc = ', originally from ' + output_data.params['source'] if 'source' in output_data.params else ''
output_data.params.update(dict(source='from npz cache' + oldsrc))
return(output_data)
def read_data_from_file(fetcher):
prm_dict = read_prm_file(fetcher.basename+".prm")
bytes = int(prm_dict['DataLength(byte)'][0])
bits = int(prm_dict['Resolution(bit)'][0])
if 'ImageType' not in prm_dict: #if so assume unsigned
bytes_per_sample = 2
dat_arr = Array.array('H')
offset = 2**(bits-1)
dtyp = np.dtype('uint16')
else:
if prm_dict['ImageType'][0] == 'INT16':
bytes_per_sample = 2
if prm_dict['BinaryCoding'][0] == 'offset_binary':
dat_arr = Array.array('H')
offset = 2**(bits-1)
dtyp = np.dtype('uint16')
elif prm_dict['BinaryCoding'][0] == "shifted_2's_complementary":
dat_arr = Array.array('h')
offset = 0
dtyp = np.dtype('int16')
# this was added for the VSL digitisers
elif prm_dict['BinaryCoding'][0] == "2's_complementary": # not sure about this
dat_arr = Array.array('h')
offset = 0
dtyp = np.dtype('int16')
else: raise NotImplementedError(' binary coding {pd}'.format(pd=prm_dict['BinaryCoding']))
"""
fp = open(fetcher.basename + '.dat', 'rb')
dat_arr.fromfile(fp, bytes/bytes_per_sample)
fp.close()
"""
dat_arr = np.fromfile(fetcher.basename + '.dat',dtyp)
#print(dat_arr[0:10])
#print(fetcher.config_name)
if fetcher.timeOK: # we have retrieve_t data!
# check for ArrayDataType: float is float32
# skip is 0 as there is no initial digitiser type token
tprm_dict = read_prm_file(fetcher.basename+".tprm",skip=0)
if pyfusion.VERBOSE>1: print(tprm_dict)
ftype = tprm_dict['ArrayDataType'][0]
floats = dict(float = 'float32', double='float64')
timebase = np.fromfile(fetcher.basename + '.time',
np.dtype(floats[ftype]))
else: # use the info from the .prm file
clockHz = None
if 'SamplingClock' in prm_dict:
clockHz = double(prm_dict['SamplingClock'][0])
if 'SamplingInterval' in prm_dict:
clockHz = clockHz/double(prm_dict['SamplingInterval'][0])
if 'ClockInterval(uSec)' in prm_dict: # VSL dig
clockHz = 1e6/double(prm_dict['ClockInterval(uSec)'][0])
if 'ClockSpeed' in prm_dict:
if clockHz != None:
pyfusion.utils.warn('Apparent duplication of clock speed information')
clockHz = double(prm_dict['ClockSpeed'][0])
clockHz = LHD_A14_clk(fetcher.shot) # see above
if clockHz != None:
if 'PreSamples/Ch' in prm_dict: # needed for "WE" e.g. VSL
pretrig = float(prm_dict['PreSamples/Ch'][0])/clockHz
else:
pretrig = 0.
timebase = arange(len(dat_arr))/clockHz - pretrig
else:
debug_(pyfusion.DEBUG, level=4, key='LHD read debug')
raise NotImplementedError("timebase not recognised")
debug_(pyfusion.DEBUG, level=4, key='LHD read debug')
ch = Channel("{dn}-{dc}"
.format(dn=fetcher.diag_name,
dc=fetcher.channel_number),
Coords('dummy', (0,0,0)))
# if fetcher.gain != None: # this may have worked once...not now!
# gain = fetcher.gain
# else:
# was - crude!! if channel == 20: arr = -arr # (MP5 and HMP13 need flipping)
try:
gain = float(fetcher.gain)
except:
gain = 1
# dodgy - should only apply to a diag in a list - don't want to define -MP5 separately - see other comment on "-"
#if fetcher.diag_name[0]=='-': flip = -1
#else:
flip = 1
# not sure if this needs a factor of two for RangePolarity,Bipolar (A14)
rng=None
for key in 'Range,Range(V)'.split(','): # equivalent alteratives
rng=prm_dict.get(key)
if rng is not None: break
scale_factor = flip*double(rng[0])/(2**bits)
# not sure how this worked before I added array() - but has using
# array slowed things? I clearly went to trouble using tailored ints above?
# - yes array(dat_arr) takes 1.5 sec for 4MS!!
# Answer - using numpy fromfile('file',dtype=numpy.int16) - 16ms instead!
# NOTE! ctype=int32 required if the array is already an np array - can be fixed once Array code is removed (next version)
output_data = TimeseriesData(timebase=Timebase(timebase),
signal=Signal(scale_factor*gain*(array(dat_arr,dtype=np.int32)-offset)),
channels=ch)
#print(output_data.signal[0:5],offset,(array(dat_arr)-offset)[0:5])
output_data.meta.update({'shot':fetcher.shot})
output_data.config_name = fetcher.config_name
output_data.params = prm_dict
return output_data
def do_fetch(self):
# Definitions:
# data_utc: is meant to be the first and last timestamps of the saved
# or the retrieved data if not saved. (at least from 3 march 2016)
# shot_f, shot_t: are beginning and end of shot (from programs) at least from 3 march 2016
# utc: seems to be same as data_utc
# seg_f_u: up til 20 march 2020, seg_f_u appears to be the *requested* segment, (now fixed - renamed to req_f_u)
# utc0 - only 9.9 or so. Should be in file or set in base.py
# In this revision, the only changes are - allow for self.time_range,
# variable names f, t changed to f_u, t_u (the desired data utc)
# and comment fixes,
# in preparation for including time_range and other cleanups.
# My W7X shots are either of the form from_utc, to_utc,
# or date (8dig) and shot (progId)
# the format is in the acquisition properties, to avoid
# repetition in each individual diagnostic
t_start = seconds()
if self.shot[1] > 1e9 or hasattr(
self, 'time_range') and self.time_range is not None:
# we have start and end in UTC instead of shot no
# need the shot and utc to get t1 to set zero t
if hasattr(self, 'time_range') and self.time_range is not None:
if self.shot[1] > 1e9:
raise ValueError(
"Can't supply shot as a utc pair and specify a time_range"
)
actual_shot = self.shot
f_u = None # set to None to make sure we don't use it
else:
f_u, t_u = self.shot # Initialize to the requested utc range
actual_shot = get_shot_number([f_u, t_u])
progs = get_programs(actual_shot) # need shot to look up progs
# need prog to get trigger - not tested for OP1.1
if len(progs) > 1:
raise LookupError(
'fetch: too many programs found - covers > 1 shot?')
#this_prog = [prog for prog in progs if (f_u >= progs[prog]['from'] and
# t_u <= progs[prog]['upto'])]
if len(progs) == 1:
this_prog = progs.values()[0]
# on shot 20180724,10, this trigger[1] is an empty list
trigger = this_prog['trigger']['1']
# This fallback to trigger[0] mean that more rubbish shots are saved than
# if we only look at the proper trigger (1) - here is an example
# run pyfusion/examples/plot_signals shot_number=[20180724,10] diag_name="W7X_UTDU_LP15_I" dev_name='W7X'
if len(trigger) == 0: # example above
print('** No Trigger 1 on shot {s}'.format(s=actual_shot))
debug_(pyfusion.DEBUG,
0,
key="noTrig1",
msg="No Trigger 1 found")
# take any that exist, at 60
trigger = [
trr[0] + int(60 * 1e9)
for trr in this_prog['trigger'].values()
if len(trr) > 0
]
if len(trigger) == 0:
raise LookupError(
'No Triggers at all on shot {s}'.format(
s=actual_shot))
utc_0 = trigger[
0] # utc_0 is the first trigger (usu 61 sec ahead of data)
else:
print(
'Unable to look up programs - assuming this is a test shot'
)
utc_0 = f_u # better than nothing - probably a 'private' test/calibration shot
if f_u is None: # shorthand for have time range
f_u = utc_0 + int(1e9 * (self.time_range[0])) # + 61))
t_u = utc_0 + int(
1e9 *
(self.time_range[1])) # + 61)) was 61 rel to prog['from']
else: # self.shot is an 8,3 digit shot and time range not specified
actual_shot = self.shot
f_u, t_u = get_shot_utc(
actual_shot
) # f_u is the start of the overall shot - i.e about plasma time -61 sec.
# at present, ECH usually starts 61 secs after t0
# so it is usually sufficient to request a later start than t0
pre_trig_secs = self.pre_trig_secs if hasattr(
self, 'pre_trig_secs') else 0.3
# should get this from programs really - code is already above. We need to just move it.
pyfusion.utils.warn('fetch: still using hard-coded 61 secs')
utc_0 = f_u + int(1e9 * (61)) # utc_0 is plasma initiation in utc
f_u = utc_0 - int(
1e9 * pre_trig_secs) # f_u is the first time wanted
# make sure we have the following defined regardless of how we got here
shot_f_u, shot_t_u = get_shot_utc(actual_shot)
req_f_u = f_u # req_f_u is the start of the desired data segment - sim. for req_t_u
req_t_u = t_u
# A URL STYLE diagnostic - used for a one-off rather than an array
# this could be moved to setup so that the error info is more complete
if hasattr(self, 'url'):
fmt = self.url # add from= further down: +'_signal.json?from={req_f_u}&upto={req_t_u}'
params = {}
# check consistency - # url should be literal - no params (only for fmt) - gain, units are OK as they are not params
if hasattr(self, 'params'):
pyfusion.utils.warn(
'URL diagnostic {n} should not have params <{p}>'.format(
n=self.config_name, p=self.params))
else: # a pattern-based one - used for arrays of probes
if hasattr(self, 'fmt'): # does the diagnostic have one?
fmt = self.fmt
elif hasattr(self.acq, 'fmt'): # else use the acq.fmt
fmt = self.acq.fmt
else: # so far we have no quick way to check the server is online
raise LookupError('no fmt - perhaps pyfusion.cfg has been '
'edited because the url is not available')
params = eval('dict(' + self.params + ')')
# Originally added to fix up erroneous ECH alias mapping if ECH - only
# 6 sources work if I don't. But it seems to help with many others
# This implementation is kludgey but proves the principle, and
# means we don't have to refer to any raw.. signals
# would be nice if they made a formal way to do this.
if 'upto' not in fmt:
fmt += '_signal.json?from={req_f_u}&upto={req_t_u}'
assert req_f_u == f_u, 'req_f_u error'
assert req_t_u == t_u, 'req_t_u error' #
params.update(req_f_u=req_f_u, req_t_u=req_t_u, shot_f_u=shot_f_u)
url = fmt.format(**params) # substitute the channel params
debug_(pyfusion.DEBUG, 2, key="url", msg="middle of work on urls")
if np.any([
nm in url for nm in
'Rf,Tower5,MainCoils,ControlCoils,TrimCoils,Mirnov,Interfer,_NBI_'
.split(',')
]):
from pyfusion.acquisition.W7X.get_url_parms import get_signal_url
# replace the main middle bit with the expanded one from the GUI
tgt = url.split('KKS/')[1].split('/scaled')[0].split('_signal')[0]
# construct a time filter for the shot
self.tgt = tgt # for the sake of error_info
filt = '?filterstart={req_f_u}&filterstop={req_t_u}'.format(
**params)
# get the url with the filter
url = url.replace(tgt, get_signal_url(tgt, filt)).split('KKS/')[-1]
# take the filter back out - we will add the exact one later
url = url.replace(filt, '/')
# nSamples now needs a reduction mechanism http://archive-webapi.ipp-hgw.mpg.de/
# minmax is increasingly slow for nSamples>10k, 100k hopeless
# Should ignore the test comparing the first two elements of the tb
# prevent reduction (NSAMPLES=...) to avoid the bug presently in codac
if (('nSamples' not in url) and (pyfusion.NSAMPLES != 0)
and not (hasattr(self, 'allow_reduction')
and int(self.allow_reduction) == 0)):
url += '&reduction=minmax&nSamples={ns}'.format(
ns=pyfusion.NSAMPLES)
debug_(pyfusion.DEBUG, 2, key="url", msg="work on urls")
# we need %% in pyfusion.cfg to keep py3 happy
# however with the new get_signal_url, this will all disappear
if sys.version < '3.0.0' and '%%' in url:
url = url.replace('%%', '%')
if 'StationDesc.82' in url: # fix spike bug in scaled QRP data
url = url.replace('/scaled/', '/unscaled/')
if pyfusion.CACHE:
# Needed for improperly configured cygwin systems: e.g.IPP Virual PC
# Perhaps this should be executed at startup of pyfusion?
cygbin = "c:\\cygwin\\bin"
if os.path.exists(cygbin) and not cygbin in os.environ['path']:
os.environ['path'] += ";" + cygbin
print('using wget on {url}'.format(url=url))
retcode = os.system('wget -x "{url}"'.format(url=url))
# retcode = os.system('c:\\cygwin\\bin\\bash.exe -c "/bin/wget {url}"'.format(url=url))
debug_(retcode != 0,
level=1,
key='wget',
msg="wget error or DEBUG='wget'")
# now read from the local copy - seems like urls need full paths
# appears to be a feature! http://stackoverflow.com/questions/7857416/file-uri-scheme-and-relative-files
# /home/bdb112/pyfusion/working/pyfusion/archive-webapi.ipp-hgw.mpg.de/ArchiveDB/codac/W7X/CoDaStationDesc.82/DataModuleDesc.181_DATASTREAM/7/Channel_7/scaled/_signal.json?from=1457626020000000000&upto=1457626080000000000&nSamples=10000
# url = url.replace('http://','file:///home/bdb112/pyfusion/working/pyfusion/')
url = url.replace('http://', 'file:/' + os.getcwd() + '/')
if 'win' in os.sys.platform:
# weven thoug it seems odd, want 'file:/c:\\cygwin\\home\\bobl\\pyfusion\\working\\pyfusion/archive-webapi.ipp-hgw.mpg.de/ArchiveDB/codac/W7X/CoDaStationDesc.82/DataModuleDesc.192_DATASTREAM/4/Channel_4/scaled/_signal.json@from=147516863807215960&upto=1457516863809815961'
url = url.replace('?', '@')
# nicer replace - readback still fails in Win, untested on unix systems
print('now trying the cached copy we just grabbed: {url}'.format(
url=url))
if (req_f_u > shot_t_u) or (req_t_u < shot_f_u):
pyfusion.utils.warn(
'segment requested is outside the shot times for ' +
str(actual_shot))
if pyfusion.VERBOSE > 0:
print(
'======== fetching url over {dt:.1f} secs from {fr:.1f} to {tt:.1f} =========\n[{u}]'
.format(u=url,
dt=(params['req_t_u'] - params['req_f_u']) / 1e9,
fr=(params['req_f_u'] - shot_f_u) / 1e9,
tt=(params['req_t_u'] - shot_f_u) / 1e9))
# seems to take twice as long as timeout requested.
# haven't thought about python3 for the json stuff yet
# This is not clean - should loop for timeout in [pyfusion.TIMEOUT, 3*pyfusion.TIMEOUT]
try:
# dat = json.load(urlopen(url,timeout=pyfusion.TIMEOUT)) works
# but follow example in
# http://webservices.ipp-hgw.mpg.de/docs/howtoREST.html#python
# Some extracts in examples/howtoREST.py
# dat = json.loads(urlopen(url,timeout=pyfusion.TIMEOUT).read().decode('utf-8'))
t_pre = seconds()
# for long shots, adjust strategy and timeout to reduce memory consumption
ONE = 4 # memory conservation tricks only apply for DEBUG<1
# Thin allows the cutoff value to be increased in come cases
# uncomment the following two for testing the exception handler
## timeout = pyfusion.TIMEOUT
## raise httplib.IncompleteRead('test')
if (req_t_u - req_f_u) / 1e9 > pyfusion.VERY_LONG:
size_MS = 2 * (
req_t_u - req_f_u
) / 1e9 # approximate - later on calc from dt i.e. MSamples
if pyfusion.NSAMPLES != 0: # allow for subsampled data
size_MS = pyfusion.NSAMPLES / 1e6
timeout = 8 * size_MS + pyfusion.TIMEOUT # don't make timeout too small!
print('On-the-fly conversion: Setting timeout to {tmo}'.format(
tmo=timeout))
dat = json.load(urlopen(url, timeout=timeout))
t_text = seconds()
else:
timeout = pyfusion.TIMEOUT
txtform = urlopen(url, timeout=timeout).read()
t_text = seconds()
print('{tm} {tp:.2f} prep, {tt:.2f} fetch without decode, '.
format(tm=time.strftime('%H:%M:%S'),
tp=t_pre - t_start,
tt=t_text - t_pre)),
sys.stdout.flush()
dat = json.loads(txtform.decode('utf-8'))
if pyfusion.DEBUG < ONE:
txtform = None # release memory
t_conv = seconds()
# for 10MS of mirnov 0.06 prep, 9.61 fetch 19.03 conv
#print('{tp:.2f} prep, {tt:.2f} fetch {tc:.2f} conv'.
print('{tc:.2f} conv'.format(tp=t_pre - t_start,
tt=t_text - t_pre,
tc=t_conv - t_text))
except socket.timeout as reason: # the following url access is a slightly different form?
# should check if this is better tested by the URL module
print('{tm} {tp:.2f} prep, {tt:.2f} timeout. '.format(
tp=t_pre - t_start,
tt=seconds() - t_pre,
tm=time.strftime('%H:%M:%S'))),
print(
'****** first timeout error, try again with longer timeout *****'
)
timeout *= 3
dat = json.load(urlopen(url, timeout=timeout))
except MemoryError as reason:
raise # too dangerous to do anything else except to reraise
except httplib.IncompleteRead as reason:
msg = str(
'** IncompleteRead after {tinc:.0f}/{timeout:.0f}s ** on {c}: {u} \n{r}'
.format(tinc=seconds() - t_start,
c=self.config_name,
u=url,
r=reason,
timeout=timeout))
pyfusion.logging.error(
msg
) # don't want to disturb the original exception, so raise <nothing> i.e. reraise
raise # possibly a memory error really? - not the case for 4114 20180912.48
except Exception as reason:
if pyfusion.VERBOSE >= 0:
print(
'**** Exception (Memory? out of disk space?) OR timeout of {timeout} **** on {c}: {u} \n{r}'
.format(c=self.config_name,
u=url,
r=reason,
timeout=timeout))
raise # re raises the last exception
# this form will default to repair = 2 for all LP probes.
#default_repair = -1 if 'Desc.82/' in url else 0
# Override acq.repair with the probe value
default_repair = int(self.repair) if hasattr(
self, 'repair') else 2 if 'Desc.82/' in url else 0
# this form follows the config file settings
self.repair = int(self.repair) if hasattr(self,
'repair') else default_repair
dimraw = np.array(dat['dimensions'])
if ('nSamples' not in url): # skip this check if we are decimating
if np.abs(req_f_u - dimraw[0]) > 2000:
print(
'** Start is delayed by >2 us {dtdel:,} relative to the request'
.format(dtdel=dimraw[0] - req_f_u))
if (req_t_u - dimraw[-1]) > 2000:
print(
'** End is earlier by >2 us {dtdel:,} relative to the request'
.format(dtdel=req_t_u - dimraw[-1]))
output_data_utc = [dat['dimensions'][0], dat['dimensions'][-1]]
if pyfusion.DEBUG < ONE:
dat['dimensions'] = None # release memory
# adjust dim only (not dim_raw so that zero time remains at t1
dim = dimraw - utc_0
# decimation with NSAMPLES will make the timebase look wrong - so disable repair
if pyfusion.NSAMPLES != 0 or self.repair == 0 or self.repair == -1:
pass # leave as is
# need at least this clipping for Langmuir probes in Op1.1
elif self.repair == 1:
dim = np.clip(dim, 0, 1e99)
elif self.repair == 2:
dim, msg = regenerate_dim(dim)
if msg is not None:
print('shot {s}, {c}: {m}'.format(s=self.shot,
c=self.config_name,
m=msg))
else:
raise ValueError(
'repair value of {r} not understood'.format(r=self.repair))
if pyfusion.VERBOSE > 2: print('repair', self.repair)
#ch = Channel(self.config_name, Coords('dummy', (0,0,0)))
# this probably should be in base.py
coords = get_coords_for_channel(**self.__dict__)
# used to be bare_chan? should we include - signs?
ch = Channel(self.config_name, coords)
scl = 1 / 3277.24 if dat['datatype'].lower() == 'short' else 1
if self.repair == -1:
output_data = TimeseriesData(timebase=Timebase(dimraw),
signal=scl * Signal(dat['values']),
channels=ch)
else:
output_data = TimeseriesData(timebase=Timebase(1e-9 * dim),
signal=scl * Signal(dat['values']),
channels=ch)
output_data.meta.update({'shot': self.shot})
output_data.utc = output_data_utc # this copy was saved earlier so we could delete the large array to save space
output_data.units = dat['units'] if 'units' in dat else ''
# this is a minor duplication - at least it gets saved via params
params['data_utc'] = output_data.utc
params['utc_0'] = utc_0 # hopefully t0 -- useful in npz files
# Warning - this could slow things down! - but allows
# corrupted time to be re-calculated as algorithms improve.
# and storage as differences takes very little space.
params['diff_dimraw'] = dimraw
params['diff_dimraw'][1:] = np.diff(dimraw)
if pyfusion.DEBUG < ONE:
dimraw = None
# NOTE!!! need float128 to process dimraw, and cumsum won't return ints
# or automatically promote to 128bit (neither do simple ops like *, +)
params['pyfusion_version'] = pyfusion.version.get_version()
if pyfusion.VERBOSE > 0:
print('shot {s}, config name {c}'.format(c=self.config_name,
s=self.shot))
output_data.config_name = self.config_name
debug_(pyfusion.DEBUG, 2, key='W7XDataFetcher')
output_data.params = params
### the total shot utc. output_data.utc = [f_u, t_u]
return output_data