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import time
import os #delete later
import pcipywrap
import json
import BaseHTTPServer
class PcilibServerHandler(BaseHTTPServer.BaseHTTPRequestHandler):
def do_HEAD(s):
s.send_response(200)
s.send_header('content-type', 'application/json')
s.end_headers()
def do_GET(s):
length = int(s.headers['Content-Length'])
#deserialize input data
data = json.loads(s.rfile.read(length).decode('utf-8'))
if 'command' in data:
command = data['command']
if(command == 'help'):
s.help(data)
elif(command == 'open'):
#check required arguments
if not 'device' in data:
s.error('message doesnt contains "device" field, '
'which is required for "open" command', data)
return
#parse command arguments and convert them to string
device = str(data.get('device', None))
model = data.get('model', None)
if not model is None:
model = str(model)
try:
s.openPcilibInstance(device, model)
except Exception as e:
s.error(str(e), data)
return
#Success! Create and send reply
s.send_response(200)
s.send_header('content-type', 'application/json')
s.end_headers()
out = dict()
out['status'] = 'ok'
s.wrapMessageAndSend(out, data)
elif(command == 'get_registers_list'):
#parse command arguments and convert them to string
bank = data.get('bank', None)
if not bank is None:
bank = str(bank)
registers = dict()
try:
registers = pcipywrap.get_registers_list(bank)
except Exception as e:
s.error(str(e), data)
return
#Success! Create and send reply
s.send_response(200)
s.send_header('content-type', 'application/json')
s.end_headers()
out = dict()
out['status'] = 'ok'
out['registers'] = registers
s.wrapMessageAndSend(out, data)
elif(command == 'get_register_info'):
#check required arguments
if not 'reg' in data:
s.error('message doesnt contains "reg" field, '
'which is required for "get_register_info" command', data)
return
#parse command arguments and convert them to string
reg = str(data.get('reg', None))
bank = data.get('bank', None)
if not bank is None:
bank = str(bank)
register = dict()
try:
register = pcipywrap.get_register_info(reg, bank)
except Exception as e:
s.error(str(e), data)
return
#Success! Create and send reply
s.send_response(200)
s.send_header('content-type', 'application/json')
s.end_headers()
out = dict()
out['status'] = 'ok'
out['register'] = register
s.wrapMessageAndSend(out, data)
elif(command == 'get_property_info'):
#parse command arguments and convert them to string
branch = data.get('branch', None)
if not branch is None:
branch = str(bank)
properties = dict()
try:
properties = pcipywrap.get_property_info(branch)
except Exception as e:
s.error(str(e), data)
return
#Success! Create and send reply
s.send_response(200)
s.send_header('content-type', 'application/json')
s.end_headers()
out = dict()
out['status'] = 'ok'
out['properties'] = properties
s.wrapMessageAndSend(out, data)
else:
s.error('command "' + command + '" undefined', data)
return
else:
s.error('message doesnt contains "command" field, which is required', data)
return
#print str(s.headers['content-type'])
#print post_data['some']
"""open device context """
def openPcilibInstance(s, device, model):
pcipywrap.closeCurrentPcilibInstance()
lib = pcipywrap.createPcilibInstance(device, model)
pcipywrap.setPcilib(lib)
"""Send help message"""
def help(s, received_message = None):
s.send_response(200)
s.send_header('content-type', 'application/json')
s.end_headers()
out = {'status': 'ok', 'help' : 'under construction'}
s.wrapMessageAndSend(out, received_message)
"""Send error message with text description"""
def error(s, info, received_message = None):
s.send_response(400)
s.send_header('content-type', 'application/json')
s.end_headers()
out = dict()
out['status'] = 'error'
out['description'] = info
out['note'] = 'send {"command" : "help"} to get help'
s.wrapMessageAndSend(out, received_message)
def wrapMessageAndSend(s, message, received_message = None):
if not received_message is None:
message['received_message'] = received_message
s.wfile.write(json.dumps(message))
HOST_NAME = '' # !!!REMEMBER TO CHANGE THIS!!!
PORT_NUMBER = 12412 # Maybe set this to 9000.
if __name__ == '__main__':
#initialize variables test (to remove)
os.environ["APP_PATH"] = '/home/vchernov/1215N/pcitool'
os.environ["PCILIB_MODEL_DIR"] = os.environ["APP_PATH"] + "/xml"
os.environ["LD_LIBRARY_PATH"] = os.environ["APP_PATH"] + "/pcilib"
pcilib_server = BaseHTTPServer.HTTPServer
httpd = pcilib_server((HOST_NAME, PORT_NUMBER), PcilibServerHandler)
print time.asctime(), "Server Starts - %s:%s" % (HOST_NAME, PORT_NUMBER)
try:
httpd.serve_forever()
except KeyboardInterrupt:
pass
httpd.server_close()
print time.asctime(), "Server Stops - %s:%s" % (HOST_NAME, PORT_NUMBER)
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