From 3fc0ef33e7a09a04a9f9055f9085e64255e62299 Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@gmail.com>
Date: Wed, 04 Jan 2017 21:35:46 +0000
Subject: [PATCH] Added even more readability in using the trisurf.py's runner class

---
 python/trisurf/trisurf.py |  101 ++++++++++++++++++++++++++++++++++++--------------
 1 files changed, 73 insertions(+), 28 deletions(-)

diff --git a/python/trisurf/trisurf.py b/python/trisurf/trisurf.py
index 46a3624..b1dc092 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
@@ -277,9 +324,9 @@
 
 
 	def initFromTape(self, tape):
-		self.tape=Tape()
-		self.tape.readTape(tape)
-		self.tapeFile=tape
+		self.Tape=Tape()
+		self.Tape.readTape(tape)
+		self.tapeFilename=tape
 
 	def initFromSnapshot(self, snapshotfile):
 		try:
@@ -292,12 +339,10 @@
 		root = tree.getroot()
 		tapetxt=root.find('tape')
 		version=root.find('trisurfversion')
-		self.tape=Tape()
-		self.tape.setTape(tapetxt.text)
+		self.Tape=Tape()
+		self.Tape.setTape(tapetxt.text)
 
 	def getPID(self):
-		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
-		#self.Dir.makeifnotexist()
 		try:
 			fp = open(os.path.join(self.Dir.fullpath(),'.lock'))
 		except IOError as e:
@@ -307,8 +352,6 @@
 		return int(pid)
 
 	def getLastIteration(self):
-		self.Dir=Directory(maindir=self.maindir,simdir=self.subdir)
-		#self.Dir.makeifnotexist()
 		try:
 			fp = open(os.path.join(self.Dir.fullpath(),'.status'))
 		except IOError as e:
@@ -318,7 +361,7 @@
 		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
@@ -354,20 +397,19 @@
 			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)
 #Symlinks tape file to the directory or create tape file from snapshot in the direcory...
 			if(self.Dir.makeifnotexist()):
 				if(self.fromSnapshot==False):
 					try:
-						os.symlink(os.path.abspath(self.tapeFile), self.Dir.fullpath()+"/tape")
+						os.symlink(os.path.abspath(self.tapeFilename), self.Dir.fullpath()+"/tape")
 					except:
-						print("Error while symlinking "+os.path.abspath(self.tapeFile)+" to "+self.Dir.fullpath()+"/tape")
+						print("Error while symlinking "+os.path.abspath(self.tapeFilename)+" to "+self.Dir.fullpath()+"/tape")
 						exit(1)
 				else:
 					try:
 						with open (os.path.join(self.Dir.fullpath(),"tape"), "w") as myfile:
 							#myfile.write("#This is automatically generated tape file from snapshot")
-							myfile.write(str(self.tape.rawText))
+							myfile.write(str(self.Tape.rawText))
 					except:
 						print("Error -- cannot make tapefile  "+ os.path.join(self.Dir.fullpath(),"tape")+" from the snapshot in the running directory")
 						exit(1)
@@ -410,9 +452,11 @@
 		maindir=""
 		for p,v in zip(prefix,variables):
 			if(v=="xk0"):
-				tv=str(round(float(self.tape.config[v])))
+				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]
+				tv=self.Tape.config[v]
 			maindir=maindir+p+tv
 		self.maindir=maindir
 		return
@@ -422,13 +466,11 @@
 		return
 
 	def getStatistics(self, statfile="statistics.csv"):
-		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=""
@@ -443,25 +485,28 @@
 		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.Comment=FileContent(os.path.join(self.Dir.fullpath(),".comment"))
 		self.Comment.writefile(data,mode=mode)
 
 
 	def getLastVTU(self):
-		vtuidx=self.getLastIteration()
+		vtuidx=self.getLastIteration()-int(self.Tape.getValue("inititer"))
 		if vtuidx<0:
 			return None
 		else:

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