In-Memory Support

Roboconf has a target implementation to run agents in memory.

This implementation has no interest for production environments.

To install it, open the DM’s interactive mode and use one of the following options.
With the roboconf:target command:

# The version will be deduced automatically by the DM
roboconf:target in-memory

Or with the native Karaf commands:

# Here in version %v_SNAP% (with its dependencies)
bundle:install --start mvn:net.roboconf/roboconf-plugin-api/%v_SNAP%
bundle:install --start mvn:net.roboconf/roboconf-agent/%v_SNAP%
bundle:install --start mvn:net.roboconf/roboconf-target-in-memory/%v_SNAP%

The in-memory target acts as a simulation mode.
When it is asked to create a VM, this implementation launches a new agent instance (as a new iPojo instance). These agents mock extensions, which means no script or Puppet module is used. Instead, life cycle actions (deploy, start, etc.) result in a log entry and nothing more.

In-memory support is useful for…

Sample target.properties.
Just copy / paste and edit.

# Configuration file for in-memory
handler = in-memory
id = a unique identifier
name = 
description = 

# The delay (in ms) to wait between the request to create an agent
# and the moment it is created. This helps to simulate the time
# necessary to launch a virtual machine.
# in-memory.delay = 0

# Execute real recipes? False by default.
#in-memory.execute-real-recipes = false

# Force an IP address for the in-memory agent.
#in-memory.ip-address-of-the-agent = 

# Write user data for an agent (default is false).
#in-memory.write-user-data =

Here is a complete description of the parameters for this handler.

Property Description Default Mandatory
handler Determines the target handler to use none, must be “in-memory” yes
id A unique identifier for the target properties. - yes
name A human-readable name for the target - no
description A description of the target. - no
in-memory.delay The delay (in milliseconds) to wait for before instantiating a new agent in memory. 0 no
in-memory.execute-real-recipes Indicate whether agents should execute the real recipes or simulate them. By default, they simulate them. false no
in-memory.ip-address-of-the-agent Force the agent to use this IP address as its own. Let it empty to let the agent guess it. If recipes are simulated, and that no value is set, then localhost is used. If real recipes are used, there is no default value. no
in-memory.write-user-data Write user data and pass them to agents as a temporary file (parameters). false no