Non-blocking Calls

[kennethreitz]

Envoy needs to provide a way to pawn and interface with long-running processes.

Use case: sshout

Functionality

• Non-blocking
• Stream
• Readline-style reactors?

c = envoy.connect('command')

# Expect.
c.expect('Password: ')
c.sendline('mypassword')

# Pid
c.pid

# Kill.
c.kill()

# Block.
c.block()

[kennethreitz]

Optional context manager:

with envoy.connect('long-process') as c:
    print c.pid

# Process is killed when context manager exits.

[kennethreitz]

https://github.com/fabric/fabric/blob/master/fabric/context_managers.py#L321