import time

import sys

from .client import LognplotTcpClient

def install_tracer():

""" Install an intense application tracer.

The tracer will track:

- function entry / exit

- python logging system messages

Traced events will be forwarded to the lognplot GUI.

"""

client = LognplotTcpClient()

client.connect()

def trace_hook(frame, event, arg):

print(frame, event, arg)

t = time.time()

nanos = int(t * 1e9)

# print("hooked at t=", nanos, "frame:", frame, "event", event, "arg", arg)

client.send_text("CALLSTACK", t, f"Event {event} arg {arg}")

client.send_sample("callstack", nanos, nanos)

client.send_event(

"trace_hook",

nanos,

{

"event": str(event),

"arg": str(arg)

# 'file':

},

)

if event == "call":

return trace_hook

# sys.settrace(trace_hook)

def profile_hook(frame, event, arg):

timestamp = time.time()

print(f"profiled frame: {frame} event: {event} arg: {arg}")

client.send_text("CALLSTACK", timestamp, f"Event {event} arg {arg}")

if event == 'call':

client.send_function_enter("CALLSTACK 2", timestamp, "FUU")

elif event == 'return':

client.send_function_exit("CALLSTACK 2", timestamp)

# print(event)

sys.setprofile(profile_hook)