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#!/usr/bin/env python
# scripted demo for https://asciinema.org/
# to use:
# 1. create virtualenv with autobahn, ansicolors and asciinema installed:
# pip install autobahn asciinema ansicolors
# 2. change to root of fresh AutobahnPython checkout
# 3. a) to record and upload, run:
#
# asciinema -c ./examples/asciinema-autobahn-demo.py rec
#
# 3. b) to just test this (e.g. without recording anything):
#
# python asciinema-autobahn-demo0.py
import os
import sys
import time
import random
import colors
prompt = 'user@machine:~/autobahn-python$ '
def interkey_interval():
"""in milliseconds"""
# return 0 # makes testing faster
return (random.lognormvariate(0.0, 0.5) * 30.0) / 1000.0
return float(random.randrange(10, 50)) / 1000.0
def type_it_out(line):
for c in line:
sys.stdout.write(c)
sys.stdout.flush()
time.sleep(interkey_interval())
def do_commands(lines):
for line in lines:
sys.stdout.write(colors.blue(prompt))
type_it_out(line)
time.sleep(0.5)
print
os.system(colors.strip_color(line))
commands = [
"clear",
colors.red('# Welcome! Here we set up and run one basic'),
colors.red('# http://crossbar.io/autobahn example'),
colors.red('# (Note there are many other examples to try)'),
colors.red('#'),
colors.red("# I presume yo've got a clone of https://github.com/crossbario/autobahn-python"),
colors.red("# in ~/autobahn-python"),
"sleep 5",
"clear",
colors.red("# first, we create a virtualenv:"),
"virtualenv venv-autobahn",
"./venv-autobahn/bin/" + colors.bold("pip install -q --editable ."),
colors.red("# we also need a WAMP router"),
colors.red("# so we will use http://crossbar.io"),
"./venv-autobahn/bin/" + colors.bold("pip install -q crossbar"),
"clear",
colors.red("# we have installed the AutobahnPython checkout, and crossbar."),
colors.red("# the examples have a suitable crossbar configuration"),
"./venv-autobahn/bin/" + colors.bold("crossbar start --cbdir examples/router/.crossbar &"),
"sleep 2",
colors.red('# now we run a simple "backend" which registers some callable methods'),
"./venv-autobahn/bin/" + colors.bold("python examples/twisted/wamp/rpc/arguments/backend.py &"),
"sleep 2",
colors.red('# ...and a frontend that calls those methods'),
"./venv-autobahn/bin/" + colors.bold("python examples/twisted/wamp/rpc/arguments/frontend.py"),
colors.red('# Thanks for watching!'),
colors.red('# https://autobahn-python.readthedocs.io/en/latest/wamp/examples.html'),
"sleep 5",
]
if __name__ == '__main__':
do_commands(commands)
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