Add "complex" JSON environment

Add examples of working with more "complex" JSON environments.

Signed-off-by: Scott S. Lowe <scott.lowe@scottlowe.org>

complex-json/README.md

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+# Complex JSON Examples
+
+These files exist to illustrate how configuration data for [Vagrant](http://www.vagrantup.com/) can be stored in a "complex" external JSON data file. It's "complex" only in the fact that the data is stored as more than just a simple list of values.
+
+Enjoy!

complex-json/Vagrantfile

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+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+# Specify minimum Vagrant version and Vagrant API version
+Vagrant.require_version '>= 1.6.0'
+VAGRANTFILE_API_VERSION = '2'
+
+# Require 'json' module
+require 'json'
+
+# Read JSON file with VM details (name, box, RAM, CPU, and IP address)
+machines = JSON.parse(File.read(File.join(File.dirname(__FILE__), 'machines.json')))
+
+# Create and configure the VMs
+Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
+
+  # Always use Vagrant's default insecure key
+  config.ssh.insert_key = false
+
+  # Iterate through entries in JSON file to create VMs
+  machines.each do |machine|
+
+    # Configure the VMs per details in machines.yml
+    config.vm.define machine['name'] do |srv|
+
+      # Don't check for box updates
+      srv.vm.box_check_update = false
+
+      # Specify the hostname of the VM
+      srv.vm.hostname = machine['name']
+
+      # Specify the Vagrant box to use (use VMware box by default)
+      srv.vm.box = machine['box']['vmw']
+
+      # Configure default synced folder (disable by default)
+      if machine['sync_disabled'] != nil
+        srv.vm.synced_folder '.', '/vagrant', disabled: machine['sync_disabled']
+      else
+        srv.vm.synced_folder '.', '/vagrant', disabled: true
+      end #if machine['sync_disabled']
+
+      # Iterate through networks as per settings in machines.yml
+      machine['nics'].each do |net|
+        if net['ip_addr'] == 'dhcp'
+          srv.vm.network net['type'], type: net['ip_addr']
+        else
+          srv.vm.network net['type'], ip: net['ip_addr']
+        end # if net['ip_addr']
+      end # machine['nics'].each
+
+      # Configure CPU & RAM per settings in machines.yml (Fusion)
+      srv.vm.provider 'vmware_fusion' do |vmw|
+        vmw.vmx['memsize'] = machine['ram']
+        vmw.vmx['numvcpus'] = machine['vcpu']
+        if machine['nested'] == true
+          vmw.vmx['vhv.enable'] = 'TRUE'
+        end #if machine['nested']
+      end # srv.vm.provider 'vmware_fusion'
+
+      # Configure CPU & RAM per settings in machines.yml (VirtualBox)
+      srv.vm.provider 'virtualbox' do |vb, override|
+        vb.memory = machine['ram']
+        vb.cpus = machine['vcpu']
+        override.vm.box = machine['box']['vb']
+      end # srv.vm.provider 'virtualbox'
+    end # config.vm.define
+  end # machines.each
+end # Vagrant.configure

complex-json/machines.json

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+[
+	{
+		"name": "jessie",
+		"box": {
+			"vmw": "bento/debian-8.6",
+			"vb": "debian/jessie64"
+		},
+		"ram": "512",
+		"vcpu": "1",
+		"nics": [
+			{
+				"type": "private_network",
+				"ip_addr": "192.168.100.101"
+			}	
+		],
+		"nested": false
+	},
+
+	{
+		"name": "trusty",
+		"box": {
+			"vmw": "bento/ubuntu-14.04",
+			"vb": "ubuntu/trusty64"
+		},
+		"ram": "512",
+		"vcpu": "1",
+		"nics": [
+			{
+				"type": "private_network",
+				"ip_addr": "192.168.100.102"
+			}	
+		],
+		"nested": false
+	},
+
+	{
+		"name": "precise",
+		"box": {
+			"vmw": "bento/ubuntu-12.04",
+			"vb": "ubuntu/precise64"
+		},
+		"ram": "512",
+		"vcpu": "1",
+		"nics": [
+			{
+				"type": "private_network",
+				"ip_addr": "192.168.100.103"
+			}	
+		],
+		"nested": false
+	}
+]