From 61ad95ca712a374f6e58127fda738b67c57d743d Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@gmail.com>
Date: Wed, 04 Jan 2017 21:19:52 +0000
Subject: [PATCH] Added many changes to trisurf.py. Mostly readability. Great fix in class Runner by introducing @property tag

---
 python/trisurf/trisurf.py |  101 ++++++++++++++++++++++++++++++++++++++++++--------
 1 files changed, 85 insertions(+), 16 deletions(-)

diff --git a/python/trisurf/trisurf.py b/python/trisurf/trisurf.py
index 8b36d27..01c3d0c 100644
--- a/python/trisurf/trisurf.py
+++ b/python/trisurf/trisurf.py
@@ -2,7 +2,7 @@
 import xml.etree.ElementTree as ET
 import base64
 import zlib
-import io
+import sys,io
 import os
 from itertools import islice
 import mmap
@@ -212,8 +212,45 @@
 			lines=0
 			f.close()
 		return lines
-		
+
+	def tail(self,filename,n=2):
+		with open(filename,'r') as myfile:
+			lines=myfile.readlines()
+		return [lines[len(lines)-2].replace('\n',''),lines[len(lines)-1].replace('\n','')]
+
 	def read(self):
+		try:
+			lines=self.tail(self.fullname)
+		except:
+			return(False)
+		if len(lines)<2:
+			return(False)
+		#print (line)
+		fields=shlex.split(lines[0])
+		epoch1=fields[0]
+		n1=fields[1]
+		
+		fields=shlex.split(lines[1])
+		epoch2=fields[0]
+		n2=fields[1]
+		try:
+			self.dT=int(epoch2)-int(epoch1)
+			self.last=n2
+			#print(epoch1)
+			#print(epoch2)
+			#print(self.dT)
+			#print(self.last)
+			self.startDate=os.path.getmtime(os.path.join(self.path,'.lock'))
+		except:
+			return(False)
+		return(True)
+
+	def readText(self):
+		with open(self.fullname, 'r+') as fin:
+			cont=fin.read()
+		return cont
+
+	def read_old(self):
 		'''
 		Method read() reads the statistics if it exists. It sets local variable dT storing the time differential between two intervals of simulation (outer loops). It also stores last simulation loop and the start of the run.
 		'''
@@ -265,6 +302,16 @@
 	'''
 	Class Runner consists of a single running or terminated instance of the trisurf. It manages starting, stopping, verifying the running process and printing the reports of the configured instances.
 	'''
+
+	@property
+	def Dir(self):
+		return Directory(maindir=self.maindir,simdir=self.subdir)
+
+
+	@property
+	def Statistics(self):
+		return Statistics(self.Dir.fullpath(), "statistics.csv")
+
 	def __init__(self, subdir='run0', tape=None, snapshot=None, runArgs=[]):
 		self.subdir=subdir
 		self.runArgs=runArgs
@@ -296,7 +343,7 @@
 		self.tape.setTape(tapetxt.text)
 
 	def getPID(self):
-		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
+#		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
 		#self.Dir.makeifnotexist()
 		try:
 			fp = open(os.path.join(self.Dir.fullpath(),'.lock'))
@@ -307,7 +354,7 @@
 		return int(pid)
 
 	def getLastIteration(self):
-		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
+#		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
 		#self.Dir.makeifnotexist()
 		try:
 			fp = open(os.path.join(self.Dir.fullpath(),'.status'))
@@ -318,7 +365,7 @@
 		return int(status)
 
 	def isCompleted(self):
-		if (int(self.tape.getValue("iterations"))==self.getLastIteration()+1):
+		if int(self.tape.getValue("iterations"))+int(self.tape.getValue("inititer"))==self.getLastIteration()+1:
 			return True
 		else:
 			return False
@@ -354,7 +401,7 @@
 			if(shutil.which('trisurf')==None):
 				print("Error. Trisurf executable not found in PATH. Please install trisurf prior to running trisurf manager.")
 				exit(1)
-			self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
+#			self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
 #Symlinks tape file to the directory or create tape file from snapshot in the direcory...
 			if(self.Dir.makeifnotexist()):
 				if(self.fromSnapshot==False):
@@ -382,10 +429,18 @@
 				return
 
 			cwd=Directory(maindir=os.getcwd())
+			lastVTU=self.getLastVTU() #we get last VTU file in case we need to continue the simulation from last snapshot. Need to be done before the Dir.goto() call.
 			self.Dir.goto()
 			print("Starting trisurf-ng executable in "+self.Dir.fullpath())
 			if(self.fromSnapshot==True):
-				params=["trisurf", "--restore-from-vtk","initial_snapshot.vtu"]+self.runArgs
+				#here we try to determine whether we should continue the simulation or start from last known VTU snapshot.
+				if(lastVTU==None):
+					initSnap="initial_snapshot.vtu"
+				else:
+					initSnap=lastVTU
+					print("WARNING: Not using initial snapshot as starting point, but selecting "+initSnap+" as a starting vesicle")
+				params=["trisurf", "--restore-from-vtk",initSnap]+self.runArgs
+				print("InitSnap is: "+initSnap)
 			else:
 				#veify if dump exists. If not it is a first run and shoud be run with --force-from-tape
 				if(os.path.isfile("dump.bin")==False):
@@ -403,6 +458,8 @@
 		for p,v in zip(prefix,variables):
 			if(v=="xk0"):
 				tv=str(round(float(self.tape.config[v])))
+				if sys.version_info<(3,0):
+					tv=str(int(float(self.tape.config[v])))
 			else:
 				tv=self.tape.config[v]
 			maindir=maindir+p+tv
@@ -414,13 +471,13 @@
 		return
 
 	def getStatistics(self, statfile="statistics.csv"):
-		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
-		self.statistics=Statistics(self.Dir.fullpath(), statfile)
+#		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
+#		self.statistics=Statistics(self.Dir.fullpath(), statfile)
 		self.Comment=FileContent(os.path.join(self.Dir.fullpath(),".comment"))
 		pid=self.getPID()
 		status=self.getStatus()
-		if(self.statistics.fileOK):
-			ETA=str(datetime.timedelta(microseconds=(int(self.tape.config['iterations'])-int(self.statistics.last))*self.statistics.dT)*1000000)
+		if(self.Statistics.fileOK):
+			ETA=str(datetime.timedelta(microseconds=(int(self.tape.config['iterations'])-int(self.Statistics.last))*self.Statistics.dT)*1000000)
 		if(status==TS_NONEXISTANT or status==TS_NOLOCK):
 			statustxt="Not running"
 			pid=""
@@ -435,22 +492,34 @@
 		else:
 			statustxt="Running"
 
-		if(self.statistics.fileOK):
-			report=[time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(self.statistics.startDate))),ETA, statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
+		if(self.Statistics.fileOK):
+			report=[time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(self.Statistics.startDate))),ETA, statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
 		else:
 			report=["N/A","N/A",statustxt, pid, str(self.Dir.fullpath()), self.Comment.getText()]
 		return report
 
 
 	def stop(self):
-		p=psutil.Process(self.getPID())
-		p.kill()
+		try:
+			p=psutil.Process(self.getPID())
+			p.kill()
+		except:
+			print("Could not stop the process. Is the process running? Do you have sufficient privileges?")
+
 
 	def writeComment(self, data, mode='w'):
-		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
+#		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
 		self.Comment=FileContent(os.path.join(self.Dir.fullpath(),".comment"))
 		self.Comment.writefile(data,mode=mode)
 
+
+	def getLastVTU(self):
+		vtuidx=self.getLastIteration()-int(self.tape.getValue("inititer"))
+		if vtuidx<0:
+			return None
+		else:
+			return  'timestep_{:06d}.vtu'.format(vtuidx)
+
 	def __str__(self):
 		if(self.getStatus()==0):
 			str=" not running."

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