import argparse
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import paramiko
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from . import Remote
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from . import trisurf
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import socket
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import os,sys
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import tabulate
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import subprocess,re
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import psutil
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#import http.server
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#import socketserver
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if sys.version_info>=(3,0):
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from urllib.parse import urlparse
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from . import WebTrisurf
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else:
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from urlparse import urlparse
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from vtk import *
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from . import VTKRendering
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#import io
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#Color definitions for terminal
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class bcolors:
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HEADER = '\033[95m'
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OKBLUE = '\033[94m'
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OKGREEN = '\033[92m'
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WARNING = '\033[93m'
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FAIL = '\033[91m'
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ENDC = '\033[0m'
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BOLD = '\033[1m'
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UNDERLINE = '\033[4m'
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#parses Command Line Arguments and returns the list of parsed values
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def ParseCLIArguments(arguments):
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parser = argparse.ArgumentParser(description='Manages (start, stop, status) multiple simulation processes of trisurf according to the configuration file.')
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parser.add_argument('proc_no', metavar='PROC_NO', nargs='*',
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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.')
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action_group=parser.add_mutually_exclusive_group(required=True)
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action_group.add_argument('-c','--comment',nargs=1, help='append comment to current comment')
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action_group.add_argument('--delete-comment', help='delete comment',action='store_true')
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action_group.add_argument('-k','--kill','--stop','--suspend', help='stop/kill the process', action='store_true')
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action_group.add_argument('-r','--run','--start','--continue', help='start/continue process', action='store_true')
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action_group.add_argument('-s','--status',help='print status of the processes',action='store_true')
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action_group.add_argument('-v','--version', help='print version information and exit', action='store_true')
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action_group.add_argument('--web-server', type=int,metavar="PORT", nargs=1, help='EXPERIMENTAL: starts web server and never exist.')
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action_group.add_argument('-p','--preview',help='preview last VTU shape',action='store_true')
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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")
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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.')
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parser.add_argument('--html', help='Generate HTML output', action="store_true")
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parser.add_argument('-n', nargs='+', metavar='PROC_NO', type=int, help='OBSOLETE. Specifies process numbers.')
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parser.add_argument('-R','--raw',help='print status and the rest of the information in raw format', action="store_true")
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parser.add_argument('-x','--local-only',help='do not attempt to contact remote hosts. Run all operations only on local machine',action='store_true')
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args = parser.parse_args(arguments)
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return args
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#gets version of trisurf currently running
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def getTrisurfVersion():
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p = subprocess.Popen('trisurf --version', shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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lines=p.stdout.readlines()
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version=re.findall(r'[0-9a-f]{7}(?:-dirty)?', lines[0].decode('ascii'))
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p.wait()
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if(len(version)):
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return version[0]
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else:
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return "unknown version"
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def copyConfigAndConnect(hosts):
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print("Connecting to remote hosts and copying config files, tapes and snapshots")
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for host in hosts:
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if(host['name'] !=socket.gethostname()): #if I am not the computer named in host name
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try:
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username=host['username']
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except:
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username=os.getusername() #default username is current user user's name
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try:
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port=host['port']
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except:
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port=22 #default ssh port
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rm=Remote.Connection(hostname=host['address'],username=username, port=port)
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rm.connect()
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rm.send_file(__file__,'remote_control.py')
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for run in host['runs']:
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try:
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rm.send_file(run.tapeFile,run.tapeFile)
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except:
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pass
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try:
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rm.send_file(run.snapshotFile,run.snapshotFile)
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except:
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pass
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host['_conn']= rm
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# we are connected to all hosts...
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return hosts
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def getTargetRunIdxList(args):
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target_runs=list(map(int,args['proc_no']))
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if len(target_runs)==0:
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#check if obsolete -n flags have numbers
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target_runs=args['n']
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if target_runs==None:
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return None
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target_runs=list(set(target_runs))
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return target_runs
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def status_processes(args,host):
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target_runs=getTargetRunIdxList(args)
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if target_runs==None:
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target_runs=list(range(1,len(host['runs'])+1))
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report=[]
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for i in target_runs:
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line=host['runs'][i-1].getStatistics()
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line.insert(0,i)
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report.append(line)
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if(args['raw']):
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print(report)
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else:
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if(args['html']):
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tablefmt='html'
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else:
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tablefmt='fancy_grid'
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print(tabulate.tabulate(report,headers=["Run no.", "Run start time", "ETA", "Status", "PID", "Path", "Comment"], tablefmt=tablefmt))
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return
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def run_processes(args,host):
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target_runs=getTargetRunIdxList(args)
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if target_runs==None:
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target_runs=list(range(1,len(host['runs'])+1))
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for i in target_runs:
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host['runs'][i-1].start()
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return
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def kill_processes(args,host):
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target_runs=getTargetRunIdxList(args)
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if target_runs==None:
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if args['force']==True:
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target_runs=list(range(1,len(host['runs'])+1))
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else:
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print("Not stopping all processes on the host. Run with --force flag if you are really sure to stop all simulations")
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return
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for i in target_runs:
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host['runs'][i-1].stop()
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return
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def comment_processes(args,host):
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target_runs=getTargetRunIdxList(args)
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if target_runs==None:
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target_runs=list(range(1,len(host['runs'])+1))
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for i in target_runs:
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host['runs'][i-1].writeComment(args['comment'][0],'a')
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print("Comment added")
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return
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def delete_comments(args,host):
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target_runs=getTargetRunIdxList(args)
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if target_runs==None:
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if args['force']==True:
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target_runs=list(range(1,len(host['runs'])+1))
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else:
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print("Not deleting comments on all posts on the host. Run with --force flag if you are really sure to delete all comments")
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return
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for i in target_runs:
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host['runs'][i-1].writeComment("")
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print("Comment deleted")
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return
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def start_web_server(args,host):
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print('Server listening on port {}'.format(args['web_server'][0]))
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if sys.version_info>=(3,0):
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WebTrisurf.WebServer(port=args['web_server'][0])
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else:
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print("Cannot start WebServer in python 2.7")
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exit(0)
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def perform_action(args,host):
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#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
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if args['run']:
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run_processes(args,host)
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elif args['kill']:
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kill_processes(args,host)
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elif args['status']:
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status_processes(args,host)
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elif args['comment']!= None:
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comment_processes(args,host)
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elif args['delete_comment']:
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delete_comments(args,host)
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elif args['web_server']!=None:
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start_web_server(args,host)
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elif args['preview']:
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preview_vtu(args,host)
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else: #version requested
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print(getTrisurfVersion())
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return
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def preview_vtu(args,host):
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#only for localhost at the moment
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if sys.version_info>=(3,0):
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print("Preview works only with python 2.7")
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exit(1)
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if host['name'] == socket.gethostname():
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VTKRendering.Renderer(args,host)
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def getListOfHostConfigurationByHostname(hosts,host):
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rhost=[]
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for chost in hosts:
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if chost['name'] in host:
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rhost.append(chost)
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return rhost
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def start(hosts,argv=sys.argv[1:]):
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args=vars(ParseCLIArguments(argv))
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#print(vars(args))
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#Backward compatibility... If running just on localmode, the host specification is unnecessary. Check if only Runs are specified
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try:
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test_host=hosts[0]['name']
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except:
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print("Network mode disabled. Old syntax detected.")
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host={'name':socket.gethostname(),'address':'127.0.0.1', 'runs':hosts}
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perform_action(args,host)
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exit(0)
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#find the host at which the action is attended
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if args['host']==None:
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if(args['status']==False and args['version']==False):
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hosts=getListOfHostConfigurationByHostname(hosts,socket.gethostname())
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else:
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hosts=getListOfHostConfigurationByHostname(hosts,args['host'])
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if len(hosts)==0:
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print ('Hostname "{}" does not exist in configuration file. Please check the spelling'.format(args['host'][0]))
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exit(1)
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if not args['local_only']:
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hosts=copyConfigAndConnect(hosts)
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#do local stuff:
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for host in hosts:
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if host['name'] == socket.gethostname():
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if(args['html']):
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print("Host <font color='orange'>"+host['name']+"</font> reports the following:")
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else:
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print("Host "+bcolors.WARNING+host['name']+bcolors.ENDC+" reports the following:")
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perform_action(args,host)
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elif not args['local_only']:
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output=host['_conn'].execute('python3 ./remote_control.py -x '+" ".join(argv))
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for line in output:
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print(line.replace('\n',''))
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if not args['local_only']:
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print("Closing connections to remote hosts")
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for host in hosts:
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if(host['name'] !=socket.gethostname()):
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host['_conn'].disconnect()
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