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Contents
Feature: switch_ready handler
The switch-ready is a message indicating a successful connection
established between a switch and your controller. If one wishes to
detect the connection-establishment event one must implement the
:switch_ready method in the controller class.
Note that the switch-ready message is not part of the OpenFlow spec,
but is a Trema-specific message. Internally, Trema::Controller
executes the following steps to emulate the switch-ready message.
1. Upon connection establishment with the switch a Hello message is
sent that completes a version negotiation sequence.
2. A Feature-Request message is sent awaiting for a Features-Reply
message from the switch.
3. Switch's state and flow tables are cleared/initialized to ensure
further correct operation.
4. Trema::Controller redirects a :switch_ready message to itself
with the switch's datapath-ID as its argument.
As Trema performs the above steps in the background, users are
unaware of such details. Users only need to handle the switch-ready
message.
@slow_process
Scenario: switch_ready handler
Given a file named "switch-ready-detector.rb" with:
"""
class SwitchReadyDetector < Controller
def switch_ready datapath_id
info "Switch #{ datapath_id.to_hex } is UP"
end
end
"""
And a file named "sample.conf" with:
"""
vswitch { datapath_id "0xabc" }
"""
When I run `trema run ./switch-ready-detector.rb -c sample.conf` interactively
Then the output should contain "Switch 0xabc is UP" within the timeout period
Version data entries
22 entries across 22 versions & 1 rubygems