I have a few methods doing this:
def method_a
Net::SSH.start(...) do |ssh|
end
end
def method_b
Net::SSH.start(...) do |ssh|
end
end
def method_c
Net::SSH.start(...) do |ssh|
end
end
Each methods call Net::SSH start which are individual SSH sessions, doing different things.
Is there a way to reuse Net::SSH session so that all 3 methods utilize a single session?
THanks.
The way to go in Net::SSH is to put
@ssh_session = Net::SSH.start( @host, nil, option={:config => true})
to a variable and then on each methods
def method_a
@ssh_session.exec!("Hello a")
end
def method_b
@ssh_session.exec!("Hello b")
end
def method_c
@ssh_session.exec!("Hello c")
end
And of course i place all the above in a class, so that I can initialize and start a ssh session and exec commands without re-establishing SSH.
Outside a class, you can try:
def call
Net::SSH.start(...) do |ssh|
method_a(ssh)
method_b(ssh)
method_c(ssh)
end
end
def method_a(ssh)
ssh.exec(...)
end
def method_b(ssh)
ssh.exec(...)
end
def method_c(ssh)
ssh.exec(...)
end
attr_reader :ssh
def initialize
@ssh ||= Net::SSH.start(...)
end
With that, you can simply define
def method_a
ssh.exec(...)
end
Same applies for other methods. I hope this helps?
Yes, definitely you can make it DRY.
You can add one method which accept hostname for the Net::SSH connection as below:
def ssh_exec(hostname)
Net::SSH.start( hostname, 'user', :timeout => 5, :paranoid => false ) do |ssh|
....
end
end
Then you can call this method ssh_exec() with proper hostname wherever you need it...
