| commit | author | age | ||
| 57af9d | 1 | #!/usr/bin/python3 |
| SP | 2 | import requests |
| 3 | import json | |
| 4 | from time import sleep | |
| 5 | import uuid | |
| 6 | import subprocess | |
| 7 | from trisurf import trisurf | |
| 8 | import os | |
| 9 | import shutil | |
| 10 | import signal | |
| 11 | import sys | |
| 12 | import socket | |
| 13 | CONNECT_ADDR='http://localhost:8000' | |
| 14 | ||
| 15 | p=None | |
| 16 | workingdir=None | |
| 17 | ||
| 18 | ||
| 19 | ||
| 20 | #--- SIGINT and SIGTERM HANDLING --- | |
| 21 | def signal_handler(signal,frame): | |
| 22 | global p | |
| 23 | global wirkingdir | |
| 24 | if p is not None: | |
| 25 | p.terminate() | |
| 26 | if(workingdir is not None): | |
| 27 | removeDir(workingdir.fullpath()) | |
| 28 | print("Process ended with signal " +str(signal)) | |
| 29 | sys.exit(0) | |
| 30 | signal.signal(signal.SIGINT, signal_handler) | |
| 31 | signal.signal(signal.SIGTERM, signal_handler) | |
| 32 | #--- END SIGINT and SIGTERM---- | |
| 33 | ||
| 34 | ||
| 35 | ||
| 36 | def get_hostname(): | |
| 37 | return socket.gethostname() | |
| 38 | ||
| 39 | def get_ip(): | |
| 40 | return ((([ip for ip in socket.gethostbyname_ex(socket.gethostname())[2] if not ip.startswith("127.")] or [[(s.connect(("8.8.8.8", 53)), s.getsockname()[0], s.close()) for s in [socket.socket(socket.AF_INET, socket.SOCK_DGRAM)]][0][1]]) + ["no IP found"])[0]) | |
| 41 | ||
| 42 | def get_client_id(addr, my_ip, my_hostname): | |
| 43 | client_auth={'ip':my_ip,'hostname':my_hostname} | |
| 44 | response=requests.post(addr+"/api/register/", data=client_auth) | |
| 45 | if(response.status_code==200): | |
| 46 | client_data=json.loads(response.text) | |
| 47 | client_id=client_data['id'] | |
| 48 | return client_id | |
| 49 | else: | |
| 50 | raise ValueError | |
| 51 | ||
| 52 | ||
| 53 | def get_run(addr,cid): | |
| 54 | response=requests.get(addr+"/api/getrun/"+str(cid)+"/") | |
| 55 | if(response.status_code==200): | |
| 56 | client_data=json.loads(response.text) | |
| 57 | rid=client_data['id'] | |
| 58 | tape=client_data['tape'] | |
| 59 | vtu=client_data['lastVTU'] | |
| 60 | status=client_data['status'] | |
| 61 | return (rid,tape,vtu,status) | |
| 62 | else: | |
| aae035 | 63 | print(response.text) |
| 57af9d | 64 | raise ValueError |
| SP | 65 | |
| 66 | ||
| 67 | def ping_run(addr,cid, rid): | |
| 68 | client_data={'client_id':cid, 'run_id':rid} | |
| 69 | response=requests.post(addr+"/api/ping/", data=client_data) | |
| 70 | if(response.status_code==200): | |
| 71 | return | |
| 72 | else: | |
| 73 | raise ValueError | |
| 74 | ||
| 75 | def upload(addr,cid, rid, vtu, status): | |
| 76 | client_data={'client_id': cid, 'run_id': rid, 'lastVTU': vtu, 'status': status} | |
| 77 | response=requests.post(addr+"/api/upload/", data=client_data) | |
| 78 | if(response.status_code==200): | |
| 79 | return | |
| 80 | else: | |
| 81 | raise ValueError | |
| 82 | ||
| 83 | def getNewVTU(directory): | |
| 84 | fset=set() | |
| 85 | for file in os.listdir(directory): | |
| 86 | if file.endswith(".vtu") and file.startswith("timestep_"): | |
| 87 | fset.add(file) | |
| 88 | return fset | |
| 89 | ||
| 90 | ||
| 91 | def removeDir(directory): | |
| 92 | os.chdir('/') | |
| 93 | try: | |
| 94 | shutil.rmtree(directory) | |
| 95 | except: | |
| 96 | print("Cannot remove directory "+directory+ "\n") | |
| 97 | return | |
| 98 | ||
| 99 | ||
| 100 | while(True): | |
| 101 | try: | |
| 102 | cid=get_client_id(CONNECT_ADDR, get_ip(),get_hostname()) | |
| 103 | except: | |
| 104 | print("Cannot get CID.") | |
| 105 | sleep(10) | |
| 106 | continue | |
| 107 | print("Got CID. getting RID.") | |
| 108 | while(True): | |
| 109 | try: | |
| 110 | (rid,tape,vtu,status)=get_run(CONNECT_ADDR,cid) | |
| 111 | except: | |
| 112 | print("Could not get RID.") | |
| 113 | sleep(10) | |
| 114 | break | |
| 115 | else: | |
| 116 | #start separate thread with simulations. | |
| 117 | workingdir=trisurf.Directory('/tmp/ts_'+str(uuid.uuid4())) | |
| 118 | workingdir.makeifnotexist() | |
| 119 | workingdir.goto() | |
| 120 | with open(workingdir.fullpath()+"/tape", 'w') as f: | |
| 121 | f.write(tape) | |
| 122 | if(int(status)==-1): | |
| 123 | cmd=['trisurf', '--force-from-tape'] | |
| 124 | print("Run id="+str(rid)+ " :: Starting from tape") | |
| 125 | else: | |
| 126 | with open(workingdir.fullpath()+"/.status",'w') as f: | |
| 127 | f.write(status) | |
| 128 | with open(workingdir.fullpath()+"/initial.vtu",'w') as f: | |
| 129 | f.write(vtu) | |
| 130 | cmd=['trisurf', '--restore-from-vtk', 'initial.vtu'] | |
| 131 | print("Run id="+str(rid)+ " :: Restoring from vtk, last timestep "+status) | |
| 132 | p=subprocess.Popen(cmd, stdout=subprocess.DEVNULL) | |
| 133 | s=int(status) | |
| 134 | while(True): | |
| 135 | #monitor for new file. If file is present, upload it! | |
| 136 | newVTU=getNewVTU(workingdir.fullpath()) | |
| 137 | if newVTU: #upload | |
| 138 | try: | |
| 139 | for nv in sorted(newVTU): | |
| 140 | with open(nv,'r') as f: | |
| 141 | fc=f.read() | |
| 142 | s=s+1 | |
| 143 | print('Uploading '+nv) | |
| 144 | upload(CONNECT_ADDR, cid, rid, fc, s) | |
| 145 | os.unlink(nv) | |
| 146 | except: | |
| 147 | print("Could not upload") | |
| 148 | p.terminate() | |
| 149 | removeDir(workingdir.fullpath()) | |
| 150 | break | |
| 151 | else: | |
| 152 | print("VTU uploaded") | |
| 153 | else: #ping | |
| 154 | try: | |
| 155 | ping_run(CONNECT_ADDR, cid, rid) | |
| 156 | except: | |
| 157 | print("Could not ping") | |
| 158 | p.terminate() | |
| 159 | removeDir(workingdir.fullpath()) | |
| 160 | #stop simulations | |
| 161 | break | |
| 162 | #check if trisurf is still running. If not break the highest level loop. | |
| 163 | sleep(1) | |
| 164 | if(p.poll() is not None): # trisurf exited! | |
| 165 | print("Trisurf was stopped") | |
| 166 | removeDir(workingdir.fullpath()) | |
| 167 | break | |
| 168 | sleep(100) | |
| 169 | ||
| 170 | ||
| 171 | ||
