From 7169f14c2110f02320e3f438b1ae0881bd93440d Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@gmail.com>
Date: Tue, 14 Jun 2016 18:40:36 +0000
Subject: [PATCH] Updated trisurfmanager file. Added remote computer capabilities. Added web interface. Added networked example configuration.

---
 python/trisurf/tsmgr.py    |  297 ++++++++++++++++++++++++++++++++++++++-----------
 python/networkedExample.py |   28 ++++
 2 files changed, 257 insertions(+), 68 deletions(-)

diff --git a/python/networkedExample.py b/python/networkedExample.py
new file mode 100755
index 0000000..931d7ab
--- /dev/null
+++ b/python/networkedExample.py
@@ -0,0 +1,28 @@
+from trisurf import trisurf
+from trisurf import tsmgr
+
+
+
+
+
+#Ok... Configure your keys:
+#ssh-keygen
+#and copy them to all the remote hosts
+#ssh-copy-id -i ./ssh/id_rsa.pub username@remotehost
+
+run2=trisurf.Runner(tape='tape')
+run2.setMaindir(("N","k","V","Np","Nm"),("nshell","xk0","constvolswitch","npoly","nmono"))
+run2.setSubdir("run1")
+
+run3=trisurf.Runner(tape='tape')
+run3.setMaindir(("N","k","V","Np","Nm"),("nshell","xk0","constvolswitch","npoly","nmono"))
+run3.setSubdir("run2")
+
+
+
+Runs=[run2, run3]
+
+hosts=({'name':'natalie','address':'kabinet.penic.eu', 'runs':Runs, 'username':'samo'},
+	{'name':'Hestia','address':'127.0.0.1', 'runs':Runs, 'username':'samo'})
+
+tsmgr.start(hosts)
diff --git a/python/trisurf/tsmgr.py b/python/trisurf/tsmgr.py
index fa7d20f..caff785 100644
--- a/python/trisurf/tsmgr.py
+++ b/python/trisurf/tsmgr.py
@@ -1,21 +1,56 @@
-import sys, getopt
+import argparse
+import paramiko
+from . import Remote
+from trisurf import trisurf
+import socket
+import sys
 import tabulate
 import subprocess,re
 import psutil
+#import http.server
+#import socketserver
+from urllib.parse import urlparse
 
-def printHelp():
-	print('Python module tsmgr accept following switches:\n')
-	print('tsmgr [-n process number] [-R] [-h] [-r] [-s] [-c comment text] [-a comment text]\n')
-	print('[-n process number]: number of process for which -s -r -c or -a switch apply. Should be placed before any other switch');
-	print('[-R]               : raw output for -s switch');
-	print('[-r]               : run process');
-	print('[-s]               : process status');
-	print('[-k]               : kill process');
-	print('[-c comment text]  : write new comment for process');
-	print('[-a comment text]  : append additional comment for process');
-	print('[-h]               : print help');
+from . import WebTrisurf
+#import io
 
 
+
+#Color definitions for terminal
+class bcolors:
+    HEADER = '\033[95m'
+    OKBLUE = '\033[94m'
+    OKGREEN = '\033[92m'
+    WARNING = '\033[93m'
+    FAIL = '\033[91m'
+    ENDC = '\033[0m'
+    BOLD = '\033[1m'
+    UNDERLINE = '\033[4m'
+
+#parses Command Line Arguments and returns the list of parsed values
+def ParseCLIArguments(arguments):
+	parser = argparse.ArgumentParser(description='Manages (start, stop, status) multiple simulation processes of trisurf according to the configuration file.')
+	parser.add_argument('proc_no', metavar='PROC_NO', nargs='*',
+			    help='process number at host. If hostname is not specified, localhost is assumed. If no processes are specified all processes on all hosts are assumed.')
+	action_group=parser.add_mutually_exclusive_group(required=True)
+	action_group.add_argument('-c','--comment',nargs=1, help='append comment to current comment')
+	action_group.add_argument('--delete-comment', help='delete comment',action='store_true')
+	action_group.add_argument('-k','--kill','--stop','--suspend', help='stop/kill the process', action='store_true')
+	action_group.add_argument('-r','--run','--start','--continue', help='start/continue process', action='store_true')
+	action_group.add_argument('-s','--status',help='print status of the processes',action='store_true')
+	action_group.add_argument('-v','--version', help='print version information and exit', action='store_true')
+	action_group.add_argument('--web-server', type=int,metavar="PORT", nargs=1, help='EXPERIMENTAL: starts web server and never exist.')
+	parser.add_argument('--force', help='if dangerous operation (killing all the processes) is requested, this flag is required to execute the operation. Otherwise, the request will be ignored.', action="store_true")
+	parser.add_argument('-H', '--host', nargs=1, help='specifies which host is itended for the operation. Defauts to localhost for all operations except --status and --version, where all configured hosts are assumed.')
+	parser.add_argument('--html', help='Generate HTML output', action="store_true")
+	parser.add_argument('-n', nargs='+', metavar='PROC_NO', type=int, help='OBSOLETE. Specifies process numbers.')
+	parser.add_argument('-R','--raw',help='print status and the rest of the information in raw format', action="store_true")
+	parser.add_argument('-x','--local-only',help='do not attempt to contact remote hosts. Run all operations only on local machine',action='store_true')
+	args = parser.parse_args(arguments)
+	return args
+
+
+#gets version of trisurf currently running
 def getTrisurfVersion():
 	p = subprocess.Popen('trisurf --version', shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
 	lines=p.stdout.readlines()
@@ -26,67 +61,193 @@
 	else:
 		return "unknown version"
 
-def start(Runs):
-	argv=sys.argv[1:]
-	processno=0
-	raw=False
-	try:
-		opts, args = getopt.getopt(argv,"Ra:n:hrskc:")
-	except getopt.GetoptError:
-		printHelp()
-		sys.exit(2)
-	for opt, arg in opts:
-		if opt == '-R':
-			raw=True
-		elif opt == '-h':
-			printHelp()
-			sys.exit()
-		elif opt == '-r':
-			if processno:
-				localRuns=[Runs[processno-1]]
-			else:
-				localRuns=Runs
-			for run in localRuns:
-				run.start()
-		elif opt == '-s':
-			report=[]
-			i=1
-			if processno:
-				localRuns=[Runs[processno-1]]
-			else:
-				localRuns=Runs
-			for run in localRuns:
-				line=run.getStatistics()
-				line.insert(0,i)
-				report.append(line)
-				i=i+1
-			if(raw):
-				print(report)
-			else:
-				print ("\n\nTrisurf running processes report\n")
-				print (tabulate.tabulate(report,headers=["Run no.", "Run start time", "ETA", "Status", "PID", "Path", "Comment"], tablefmt='fancy_grid'))
-		elif opt == '-n':
-			processno=int(arg)
-			if processno<1 or processno>len(Runs) :
-				processno=0
-		elif opt == '-c':
-			comment = arg
-			if processno:
-				Runs[processno-1].writeComment(arg)
-		elif opt == '-a':
-			comment = arg
-			if processno:
-				Runs[processno-1].writeComment("\n"+arg, 'a')
 
-		elif opt == '-k':
-			if processno:
-				Runs[processno-1].stop()
+
+def copyConfigAndConnect(hosts):
+	print("Connecting to remote hosts and copying config files, tapes and snapshots")
+	for host in hosts:
+		if(host['name'] !=socket.gethostname()): #if I am not the computer named in host name
+			try:
+				username=host['username']
+			except:
+				username=os.getusername() #default username is current user user's name
+			try:
+				port=host['port']
+			except:
+				port=22 #default ssh port
+			rm=Remote.Connection(hostname=host['address'],username=username, port=port)
+			rm.connect()
+			rm.send_file(__file__,'remote_control.py')
+			for run in host['runs']:
+				try:
+					rm.send_file(run.tapeFile,run.tapeFile)
+				except:
+					pass
+				try:
+					rm.send_file(run.snapshotFile,run.snapshotFile)
+				except:
+					pass
+			host['_conn']= rm
+	# we are connected to all hosts...
+	return hosts
+
+
+
+def getTargetRunIdxList(args):
+	target_runs=list(map(int,args['proc_no']))
+	if len(target_runs)==0:
+		#check if obsolete -n flags have numbers
+		target_runs=args['n']
+		if target_runs==None:
+			return None
+	target_runs=list(set(target_runs))
+	return target_runs
+
+
+
+def status_processes(args,host):
+	target_runs=getTargetRunIdxList(args)
+	if target_runs==None:
+		target_runs=list(range(1,len(host['runs'])+1))
+	report=[]
+	for i in target_runs:
+		line=host['runs'][i-1].getStatistics()
+		line.insert(0,i)
+		report.append(line)
+	if(args['raw']):
+		print(report)
+	else:
+		if(args['html']):
+			tablefmt='html'
 		else:
-			printHelp()
-			sys.exit(2)
+			tablefmt='fancy_grid'
+		print(tabulate.tabulate(report,headers=["Run no.", "Run start time", "ETA", "Status", "PID", "Path", "Comment"], tablefmt=tablefmt))
+	return
+
+def run_processes(args,host):
+	target_runs=getTargetRunIdxList(args)
+	if target_runs==None:
+		target_runs=list(range(1,len(host['runs'])+1))
+	for i in target_runs:
+		host['runs'][i-1].start()
+	return
+
+def kill_processes(args,host):
+	target_runs=getTargetRunIdxList(args)
+	if target_runs==None:
+		if args['force']==True:
+			target_runs=list(range(1,len(host['runs'])+1))
+		else:
+			print("Not stopping all processes on the host. Run with --force flag if you are really sure to stop all simulations")
+			return
+	for i in target_runs:
+		host['runs'][i-1].stop()
+	return
+
+def comment_processes(args,host):
+	target_runs=getTargetRunIdxList(args)
+	if target_runs==None:
+		target_runs=list(range(1,len(host['runs'])+1))
+	for i in target_runs:
+		host['runs'][i-1].writeComment(args['comment'][0],'a')
+	print("Comment added")
+	return
+
+def delete_comments(args,host):
+	target_runs=getTargetRunIdxList(args)
+	if target_runs==None:
+		if args['force']==True:
+			target_runs=list(range(1,len(host['runs'])+1))
+		else:
+			print("Not deleting comments on all posts on the host. Run with --force flag if you are really sure to delete all comments")
+			return
+	for i in target_runs:
+		host['runs'][i-1].writeComment("")
+	print("Comment deleted")
+	return
+
+
+def start_web_server(args,host):
+	print('Server listening on port {}'.format(args['web_server'][0]))
+	WebTrisurf.WebServer(port=args['web_server'][0])
+	exit(0)
+
+def perform_action(args,host):
+	#find which flags have been used and act upon them. -r -s -k -v -c --delete-comment are mutually exclusive, so only one of them is active
+	if args['run']:
+		run_processes(args,host)
+	elif args['kill']:
+		kill_processes(args,host)
+	elif args['status']:
+		status_processes(args,host)
+	elif args['comment']!= None:
+		comment_processes(args,host)
+	elif args['delete_comment']:
+		delete_comments(args,host)
+	elif args['web_server']!=None:
+		start_web_server(args,host)
+	else: #version requested
+		print(getTrisurfVersion())
+	return
+
+
+	
+
+def getListOfHostConfigurationByHostname(hosts,host):
+	rhost=[]
+	for chost in hosts:
+		if chost['name'] in host:
+			rhost.append(chost)
+	return rhost
 
 
 
+def start(hosts,argv=sys.argv[1:]):
+	args=vars(ParseCLIArguments(argv))
+	#print(vars(args))
+
+	#Backward compatibility... If running just on localmode, the host specification is unnecessary. Check if only Runs are specified
+	try:
+		test_host=hosts[0]['name']
+	except:
+		print("Network mode disabled. Old syntax detected.")
+		host={'name':socket.gethostname(),'address':'127.0.0.1', 'runs':hosts}
+		perform_action(args,host)
+		exit(0)
+
+
+	#find the host at which the action is attended
+	if args['host']==None:
+		if(args['status']==False and args['version']==False):
+			hosts=getListOfHostConfigurationByHostname(hosts,socket.gethostname())
+	else:
+		hosts=getListOfHostConfigurationByHostname(hosts,args['host'])
+	if len(hosts)==0:
+		print ('Hostname "{}" does not exist in configuration file. Please check the spelling'.format(args['host'][0]))
+		exit(1)
+
+	if not args['local_only']:
+			hosts=copyConfigAndConnect(hosts)
+
+	#do local stuff:
+	for host in hosts:
+		if host['name'] == socket.gethostname():
+			if(args['html']):
+				print("Host <font color='orange'>"+host['name']+"</font> reports the following:")
+			else:
+				print("Host "+bcolors.WARNING+host['name']+bcolors.ENDC+" reports the following:")
+			perform_action(args,host)
+		elif not args['local_only']:
+			output=host['_conn'].execute('python3 ./remote_control.py -x '+" ".join(argv))
+			for line in output:
+				print(line.replace('\n',''))
+
+
+	if not args['local_only']:
+		print("Closing connections to remote hosts")
+		for host in hosts:
+			if(host['name'] !=socket.gethostname()):
+				host['_conn'].disconnect()
 
 
 

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