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dnamodelLoader_withCopy.py
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dnamodelLoader_withCopy.py
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'''
Created on Oct 17, 2013
@author: pau
'''
import sys
import os
import psycopg2
from psycopg2.extensions import adapt
import numpy
import StringIO
from MDAnalysis import Universe
def listTrajectories(dir):
trajList=[]
formats=[]
for root, dirs, filenames in os.walk(dir):
trajectory=""
topology=""
for f in filenames:
filename, fileExtension = os.path.splitext(f)
if str.lower(fileExtension) == ".trj" or str.lower(fileExtension)== ".mdcrd" or str.lower(fileExtension)== ".netcdf":
trajectory = os.path.join(root, f)
trajectoryFormat = str.upper(fileExtension.split(os.extsep)[1])
elif str.lower(fileExtension) == ".top" or str.lower(fileExtension)== ".prmtop" or str.lower(fileExtension)== ".pdb":
topology = os.path.join(root, f)
topologyFormat = str.upper(fileExtension.split(os.extsep)[1])
if trajectory and topology:
trajList.append((topology, trajectory))
formats.append((trajectoryFormat, topologyFormat))
return (trajList, formats)
class numpy_float32_adapter(object):
"""Adapt numpy's float32 type to PostgreSQL's float."""
def __init__(self, f):
self._f = f
def prepare(self, conn):
pass
def getquoted(self):
return str(self._f)
__str__ = getquoted
psycopg2.extensions.register_adapter(numpy.float32, numpy_float32_adapter) # @UndefinedVariable
def nthLetter(cont):
return str(chr(ord('A') + cont))
def simulationInsert(con, totalTime, timeStep, samplingTime, totalSnapsNumber, description):
sql_insert_simulation="INSERT INTO dnamodel.simulation (totalTime, timeStep, samplingTime, totalSnapsNumber, description) VALUES (%s, %s, %s, %s, %s) RETURNING simulationId;"
cur = con.cursor()
cur.execute(sql_insert_simulation, (totalTime, timeStep, samplingTime, totalSnapsNumber, description))
simulationId = cur.fetchone()[0]
cur.close()
return simulationId
def referenceInsert(con, simulationId, pdbCode, chainCode):
sql_insert_simulationReference="INSERT INTO dnamodel.reference (simulationId, pdbCode, chainCode) VALUES (%s, %s, %s) RETURNING referenceId;"
cur = con.cursor()
cur.execute(sql_insert_simulationReference, (simulationId, pdbCode, chainCode))
referenceId = cur.fetchone()[0]
cur.close()
return referenceId
def snapshotInsert(con, simulationId, snapNumber):
sql_insert_snapshot="INSERT INTO dnamodel.snapshot (simulationId, snapNumber) VALUES (%s, %s) RETURNING snapshotId;"
cur = con.cursor()
cur.execute(sql_insert_snapshot, (simulationId, snapNumber))
snapshotId = cur.fetchone()[0]
cur.close()
return snapshotId
def topologyInsert(con, simulationId, atomNum, atomName, atomType, residueCode, residueNumber, chainCode, description):
sql_insert_topology="INSERT INTO dnamodel.topology (simulationId, atomNum, atomName, atomType, residueNum, residueCode, chainCode, description) VALUES (%s, %s, %s, %s, %s, %s, %s, %s) RETURNING topologyId;"
cur = con.cursor()
cur.execute(sql_insert_topology, (simulationId, atomNum, adapt(atomName), adapt(atomType), residueNumber, adapt(residueCode), adapt(chainCode), adapt(description)))
topologyId = cur.fetchone()[0]
cur.close()
return topologyId
def atomInsert(con, topologyId, snapshotId, x, y, z):
sql_insert_atom="INSERT INTO dnamodel.atom VALUES (%s, %s, %s, %s, %s);"
cur = con.cursor()
cur.execute(sql_insert_atom, (con, topologyId, snapshotId, x, y, z))
cur.close()
def trajectoryToDB(uni, con, simulationId):
cur = con.cursor()
firstSnapshot = True
sqlAtom= "INSERT INTO dnamodel.atom VALUES "
#topologyBuffer = "INSERT INTO dnamodel.topology VALUES "
atomBufferMemory = StringIO.StringIO()
atNumTopId = {}
for ts in uni.trajectory:
snapshotId = snapshotInsert(con, simulationId, ts.frame)
atomBuffer = ''
atomBufferMemoryTemp = ''
atomCont = 0
if ((ts.frame % 100000) == 0) or (ts.frame == 1):
print 'Frame: '+str(ts.frame)
#break;
if firstSnapshot:
firstSnapshot= False
oldResidue = 0
chainCont= 0
chainError = False
for at in uni.atoms:
#Chain
if len(at.segid.upper()) > 1:
segid = 'A'
else:
segid = at.segid.upper()
if chainError:
currentChain = nthLetter(chainCont)
else:
currentChain = segid
#Residue
currentResidue = at.resid
if currentResidue < oldResidue:
chainError = True
chainCont += 1
currentChain = nthLetter(chainCont)
oldResidue = currentResidue
###Canviar
#topologyBuffer = '%s (%s, %s, %s, %s, %s, %s, %s),' % (topologyBuffer, simulationId, at.number, adapt(at.name), adapt(at.type), adapt(at.resname), currentResidue, adapt(currentChain))
topologyId = topologyInsert(con, simulationId, at.number, adapt(at.name), adapt(at.type), adapt(at.resname), currentResidue, adapt(currentChain), "")
atNumTopId[str(at.number)]=topologyId
atomBuffer = '%s (%s, %s, %s, %s, %s),' % (atomBuffer, topologyId, snapshotId, at.position[0], at.position[1], at.position[2])
atomBufferMemoryTemp = '%s\t%s\t%s\t%s\t%s\n' % (topologyId, snapshotId, at.position[0], at.position[1], at.position[2])
atomBufferMemory.write(atomBufferMemoryTemp)
#print str(simulationId) +' ' + str(at.number) +' ' + at.name +' ' + at.type+' ' + at.resname +' ' + str(currentResidue)+ ' ' + currentChain + ''
#topologyInsert(con, simulationId, at.number, at.name, at.type, at.resname, currentResidue, currentChain, '')
atomBuffer= '%s %s ;' % (sqlAtom, atomBuffer[:-1])
#topologyBuffer = '%s ;' % (topologyBuffer[:-1])
#cur.execute(topologyBuffer)
# FIXME! We would be benefit using COPY STDIN to atom table using stringio buffering
#cur.execute(atomBuffer)
cur.copy_expert("COPY atom FROM STDIN", atomBufferMemory)
else:
for at in uni.atoms:
atomCont += 1
atomBuffer = '%s (%s, %s, %s, %s, %s),' % (atomBuffer, atNumTopId[str(at.number)], snapshotId, at.position[0], at.position[1], at.position[2])
if atomCont == 100000:
atomCont = 0
atomBuffer= '%s %s ;' % (sqlAtom, atomBuffer[:-1])
cur.execute(atomBuffer)
atomBuffer = ''
atomBuffer= '%s %s ;' % (sqlAtom, atomBuffer[:-1])
cur.execute(atomBuffer)
atomBuffer = ''
#FIXME! Instead commit, here will be placed the copy
con.commit()
cur.close()
def main(dir):
try:
#con = psycopg2.connect(database='postgres', user='postgres', host='localhost', port=5432, password='post')
con = psycopg2.connect(database='dnamodel', user='dnamodel', host='localhost', port=5432, password='post')
#con = psycopg2.connect(database='postgres', user='postgres', host='mmb00.local', port=5433, password='post')
except psycopg2.DatabaseError, e:
print 'Error %s' % e
sys.exit(1)
trajList, formats = listTrajectories(dir)
totalTrajNumber = len(trajList)
trajFormat = formats[0][0]
topoFormat = formats[0][1]
cont = 0
if trajFormat == "NETCDF":
trajFormat = "NCDF"
for topologyPath, trajectoryPath in trajList:
cont +=1
print "Trajectory "+str(cont)+"/"+str(totalTrajNumber)+" "+topologyPath
#canviar parametres simulationId
simulationId = simulationInsert(con, 225000, 1, 1, 225000, topologyPath+" "+trajectoryPath)
referenceInsert(con, simulationId, 'DNA ', 'X')
try:
#uniTraj = Universe(topologyPath, format='PRMTOP')
uniTraj = Universe(topologyPath, format=topoFormat)
except:
print "Error: Could not load topology file"
return 100
try:
#filename, fileExtension = os.path.splitext(trajectoryPath)
#if str.lower(fileExtension)== ".netcdf":
# uniTraj.load_new(trajectoryPath, format='NCDF')
#else:
# uniTraj.load_new(trajectoryPath)
uniTraj.load_new(trajectoryPath, format=trajFormat)
#uniTraj.load_new(trajectoryPath)
except:
print "Error: Could not load trajectory file"
return 200
print "Inserting trajectory"
trajectoryToDB(uniTraj, con, simulationId)
#print len(structIdArray)
if con:
con.close()
print "The program successfully finished"
return 0
if __name__ == "__main__":
if len(sys.argv) == 2:
dir = sys.argv[1]
sys.exit(main(dir))
else:
print "usage: topologyPath trajectoryPath"
print " topologyPath --> Path to the to the PRMTOP file."
print " trajectoryPath --> Path to the NETCDF trajectory file."