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main_web_service.py
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from http.server import BaseHTTPRequestHandler, HTTPServer
import traceback
from urllib.parse import urlparse, parse_qs
import urllib
import threading, socket
from prompts_dot_graph_creator import EXPERT_COMMANDS, GetPromptToDescribeWorkflow, getExpertCommandToCreateDot, getExpertCommandToDescribeDot
import core
import config
import config_web
# Python web server with cookie-based session
# based on https://davidgorski.ca/posts/sessions/
# TODO add sessions like gpt-rpg
previous_messages = []
prompt_id = 1
class MyServer(BaseHTTPRequestHandler):
def do_GET(self):
routes = {
"/generate-dot": self.bot_generate_dot,
"/describe-dot": self.bot_describe_dot,
}
try:
response = 200
path = self.parse_path()
print(f"req path: '{path}'")
content = routes[path]()
except Exception as error:
print("!! error: ", error)
traceback.print_exc() # print stack trace
response = 404
content = "{ 'error': 'Oops! Not Found' }"
self.send_response(response)
self.send_header('Content-type','text/plain')
self.end_headers()
self.write(content)
return
def bot_describe_dot(self):
global prompt_id
user_prompt = self.parse_query_param("p")
print(f" {user_prompt}")
user_prompt_wrapped = GetPromptToDescribeWorkflow(user_prompt)
command_messages = core.create_command_messages([getExpertCommandToDescribeDot()])
if config_web.discard_previous_messages:
previous_messages = []
rsp = core.execute_prompt(user_prompt_wrapped, previous_messages, command_messages, prompt_id)
prompt_id += 1
return rsp
def bot_generate_dot(self):
global prompt_id
DELIMITER = "======"
EMPTY_DOT = "digraph G{}"
user_prompt = self.parse_query_param("p")
print(f" {user_prompt}")
command_messages = core.create_command_messages([getExpertCommandToCreateDot()])
if config_web.discard_previous_messages:
previous_messages = []
rsp = core.execute_prompt(user_prompt, previous_messages, command_messages, prompt_id)
prompt_id += 1
if "human_output" in rsp:
return rsp["human_output"] + f"\n\n{DELIMITER}\n\n" + rsp["dot"]
else:
print("!! error rsp? - cannot parse")
print(rsp)
return f"{rsp}\n\n{DELIMITER}\n\n{EMPTY_DOT}"
def parse_path(self):
return urlparse(self.path).path
def parse_query_params(self):
return parse_qs(urlparse(self.path).query)
def parse_query_param(self, param):
params = self.parse_query_params()
if param in params:
value_array = params[param]
if value_array is None:
return ""
return value_array[0]
return ""
def write(self, content):
self.wfile.write(bytes(content, "utf-8"))
def start_single_threaded():
# Single threaded so can debug!
webServer = HTTPServer((config_web.HOSTNAME, config_web.PORT), MyServer)
print("Server started http://%s:%s" % (config_web.HOSTNAME, config_web.PORT))
try:
webServer.serve_forever()
except KeyboardInterrupt:
pass
webServer.server_close()
print("Server stopped.")
def quotify(text):
return urllib.parse.quote(text)
def start_multi_threaded():
# Multi-threaded server, else performance is terrible
# ref https://stackoverflow.com/questions/46210672/python-2-7-streaming-http-server-supporting-multiple-connections-on-one-port
#
# Create ONE socket.
addr = (config_web.HOSTNAME, config_web.PORT)
sock = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind(addr)
sock.listen(5)
# Launch many listener threads.
class Thread(threading.Thread):
def __init__(self, i):
threading.Thread.__init__(self)
self.i = i
self.daemon = True
self.start()
def run(self):
httpd = HTTPServer(addr, MyServer, False)
# Prevent the HTTP server from re-binding every handler.
# https://stackoverflow.com/questions/46210672/
httpd.socket = sock
httpd.server_bind = self.server_close = lambda self: None
try:
httpd.serve_forever()
except KeyboardInterrupt:
pass
httpd.server_close()
escaped_create_dot = quotify("Create a flow that makes a series of decisions about whether to approve a mortgage application")
escaped_dot = quotify('digraph G { Start_Start_1[shape=ellipse, label="Start_1" ]; Decision_Experience[shape=Mdiamond, label="Experience" ]; Decision_Education[shape=Mdiamond, label="Education" ]; Decision_Skills[shape=Mdiamond, label="Skills" ]; End_Recommend[shape=rectangle, label="Recommend" ]; End_Not_Recommend[shape=rectangle, label="Not_Recommend" ]; Start_Start_1 -> Decision_Experience; Decision_Experience -> Decision_Education [label="true"]; Decision_Experience -> End_Not_Recommend [label="false"]; Decision_Education -> Decision_Skills [label="true"]; Decision_Education -> End_Not_Recommend [label="false"]; Decision_Skills -> End_Recommend [label="true"]; Decision_Skills -> End_Not_Recommend [label="false"];}")}')
print(f"Server started at http://{config_web.HOSTNAME}:{config_web.PORT} - {config_web.WEB_SERVER_THREADS} threads")
print("Please set the 'p' query parameter to be the user's prompt.")
print(f"- generate DOT example: http://{config_web.HOSTNAME}:{config_web.PORT}/generate-dot?p={escaped_create_dot}")
print(f"- describe DOT example: http://{config_web.HOSTNAME}:{config_web.PORT}/describe-dot?p={escaped_dot}");
print("[press any key to stop]")
[Thread(i) for i in range(config_web.WEB_SERVER_THREADS)]
input("Press ENTER to kill server\n")
print("Server stopped.")
if __name__ == "__main__":
if config.is_debug:
start_single_threaded()
else:
start_multi_threaded()