forked from esoroush/scalrr
/
scalrr_web.py
executable file
·291 lines (242 loc) · 10 KB
/
scalrr_web.py
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import json
import base64
import StringIO
import pyfits
import pywcs
import uuid
import numpy
from flask import Flask, make_response, request, session, render_template
from flask import send_file
import scidb_server_interface as db_interface
import scalrr_vis
import SciDB
import zscale
app = Flask(__name__)
memcache = {}
default_StartingX = 272250
default_StartingY = 264250
default_StartingZ = 0
@app.route('/')
def index():
return render_template('index.html')
@app.route('/purge/database/', methods=['GET','POST'])
def purge_database():
print "@/purge/database"
query_text = request.args['query']
language = request.args['language']
callback = request.args['callback']
db_interface.connect()
db_interface.removeQuery('sub_arr')
db_interface.removeQuery('_sub_arr')
db_interface.removeQuery('cooked')
db_interface.removeQuery('_SUM_COUNT_TEMP')
db_interface.removeQuery('T')
db_interface.disconnect()
json_message = {
'request': request.json,
'status': 'OK',
}
message = callback + "(" + json.dumps(json_message) + ")"
response = make_response(message)
response.headers['Access-Control-Allow-Origin'] = "*"
return response
@app.route('/process/timeseries/', methods=['GET'])
def process_timeseries():
query_text = request.args['query']
language = request.args['language']
callback = request.args['callback']
db_interface.connect()
query_result = db_interface.executeQuery(str(query_text), str(language),False,False)
if query_result is None: # error processing query
return make_response(json.dumps({
'request': request.json,
'status': 'ERROR',
'message': "error processing query",
}))
data_json = db_interface.getDataInJson(query_result)
db_interface.completeQuery(query_result.queryID)
db_interface.disconnect()
# Make response
json_message = {
'request': request.json,
'status': 'OK',
'data': data_json,
}
message = callback + "(" + json.dumps(json_message) + ")"
response = make_response(message)
return response
@app.route('/process/query/image/', methods=['GET'])
def process_query_image():
if request.args['iterative']:
query_text = request.args['query'].replace("@","@"+str(request.args['iteration']))
title = "Iteration " + str(request.args['iteration'])
else:
query_text = str(request.args['query'])
title = query_text
iterative = request.args['iterative']
z_scale = request.args['z_scale']
language = str(request.args['language'])
callback = request.args['callback']
query_lines = query_text.split("\n")
db_interface.connect()
# process all queries except for the last one
for query_line in query_lines[:-1]: # process all lines except the last one
db_interface.executeQuery(str(query_line), str(language))
# process last query
query_result = db_interface.executeQuery(str(query_lines[-1]), str(language))
if query_result is None: # error processing query
return make_response(json.dumps({
'request': request.json,
'status': 'ERROR',
'message': "error processing query",
}))
data_array, array_dim = db_interface.getFirstAttrArrFromQueryInNumPY(query_result)
db_interface.disconnect()
#print >> sys.stdout, response_json
result = SciDB.SciDB_Result(data_array)
# Get the image array
if not iterative:
img_array = result.get_data_array()
elif request.args['iteration'] == 1:
img_array = result.get_data_array()
else:
master = memcache.get(session.pop('previous_data_key', None), None)
img_array = result.get_img_array(master)
# Get z min and max
if z_scale == True:
z_min, z_max = zscale.zscale(result.data_array, nsamples=2000, contrast=0.25)
else:
z_min, z_max = (array_dim[2][0], array_dim[2][1]) #TODO fix this, currently zmin and zmax are unknown
# Make figure
output = scalrr_vis.plot_image(img_array, z_min, z_max)
encoded_image = base64.b64encode(output.getvalue())
# Save session data
memcache[query_text] = result.get_data_array()
session['previous_data_key'] = query_text
# Make response
json_message = {
'request': request.args,
'status': 'OK',
'image': encoded_image,
#"plot": {"title": title, "x_axis": result.x_name, "y_axis": result.y_name, "z_axis": result.z_name},
"dimensions": {
"x":{"min": array_dim[0][0], "max": array_dim[0][1]},
"y":{"min": array_dim[1][0], "max": array_dim[1][1]},
"z":{"min": array_dim[2][0], "max": array_dim[2][1]}
}
}
message = callback + "(" + json.dumps(json_message) + ")"
response = make_response(message)
#print >> sys.stdout, json_message
return response
@app.route('/process/query/fits/', methods=['GET'])
def process_query_fits():
print "@/process/query/fits/"
query_text = str(request.args['query'])
iterative = request.args['iterative']
iteration = 1
if iterative == "true":
iteration = request.args['iteration']
language = str(request.args['language'])
callback = request.args['callback']
print "iteration:",iteration
#if iterative:
# query_text = request.args['query'].replace("@","@"+str(request.args['iteration']))
query_lines = query_text.split("\n")
try:
db_interface.connect()
except:
message = json.dumps({
'request': request.json,
'status': 'ERROR',
'message': "unable to connect to SciDB",
})
return make_response(callback + "(" + message + ")")
#process the first query
#find the subarray part of the query
queryExecutionTime = 0
query_line_aligned = db_interface.alignQuery(str(query_lines[0]))
if query_line_aligned['done'] == True:
print "first line query:",query_lines[0]
result_one = db_interface.executeQuery(str(query_lines[0]), str(language))
queryExecutionTime += int(result_one.executionTime)
print "time:",queryExecutionTime
# process from the second queriy until the last one
for index in range(0,int(iteration)):
for query_line in query_lines[1:-1]: # process all lines except the last one
print "iterative query:",query_line
result_one = db_interface.executeQuery(str(query_line), str(language))
queryExecutionTime += int(result_one.executionTime)
print "time:",queryExecutionTime
# process last query
print "last query:",query_lines[-1]
query_result = db_interface.executeQuery(str(query_lines[-1]), str(language),True,False)
if query_result is None: # error processing query
message = json.dumps({
'request': request.json,
'status': 'ERROR',
'message': "error processing query",
})
return make_response(callback + "(" + message + ")")
queryExecutionTime += int(query_result.executionTime)
if query_line_aligned['done'] == True:
data_array, array_dim = db_interface.getFirstAttrArrFromQueryInNumPY(query_result,[query_line_aligned['old_row'],query_line_aligned['old_col']],True)
else:
data_array, array_dim = db_interface.getFirstAttrArrFromQueryInNumPY(query_result,[0,0],False)
db_interface.disconnect()
filename = uuid.uuid4().hex + ".fits"
wcs = pywcs.WCS(naxis=2)
try:
sub_arr = query_text.split("subarray")[1].split(",")
wcs.wcs.crpix = [440250-(int(sub_arr[3])-259750), 353595-(int(sub_arr[2])-247750)]
#wcs.wcs.crpix = [440250-(int(sub_arr[3])-260250), 353595-(int(sub_arr[2])-248250)]
except:
sub_arr = query_text.split("between")[1].split(",")
wcs.wcs.crpix = [440250-(int(sub_arr[3])-259750), 353595-(int(sub_arr[2])-247750)]
wcs.wcs.cd = numpy.array([-.0000555555555, 0, 0, .000055555555]).reshape([2,2])
wcs.wcs.crval = [60, 10.8123169635717]
wcs.wcs.ctype = ["RA---STG", "DEC--STG"]
header = wcs.to_header()
try:
sub_arr = query_text.split("subarray")[1].split(",")
header.update("AbsPixX", int(sub_arr[2]))
header.update("AbsPixY", int(sub_arr[3]))
header.update("AbsPixZ", int(sub_arr[1]))
except:
sub_arr = query_text.split("between")[1].split(",")
header.update("AbsPixX", int(sub_arr[2]))
header.update("AbsPixY", int(sub_arr[3]))
header.update("AbsPixZ", int(sub_arr[1]))
header.update("CD1_2", 0)
header.update("CD2_1", 0)
header.update("CD1_1", -0.0000555555555)
header.update("CD2_2", 0.0000555555555)
hdu = pyfits.PrimaryHDU(data_array, header=header)
hdu.writeto(filename)
#encoded_fits = base64.b64encode(output.getvalue())
print "time:",queryExecutionTime
# Make response
json_message = {
'request': request.args,
'status': 'OK',
'time': queryExecutionTime,
'fits_file': filename
}
message = callback + "(" + json.dumps(json_message) + ")"
response = make_response(message)
#print >> sys.stdout, json_message
return response
def process_query():
return
@app.route('/get/<filename>', methods=['GET'])
def get_file(filename):
file = send_file(filename,
attachment_filename="file.fits",
as_attachment=True)
response = make_response(file)
response.headers['Access-Control-Allow-Origin'] = "*"
return response
import os
app.secret_key = os.urandom(24)
if __name__ == '__main__':
app.run('vega.cs.washington.edu', 5551, debug=True)