vcl.json

{
	"$schema": "http://json-schema.org/draft-04/schema#",
	"description": "Varnish Configuration Object",
	"type": "object",
	"required": ["backends", "rules"],
	"properties": {
		"backends": {
			"description": "list of origin servers",
			"type": "array",
			"items": {
				"type": "object",
				"required": ["name", "host"],
				"properties": {
					"name": { "type": "string" },
					"host": { "type": "string" },
					"port": { "type": "number" }			
			}
		},
		"probes": {
			"description": "list of backend probes",
			"type": "array",
			"items": {
				"type": "object",
				"properties": {
					"url":	      { "type": "string" },
					"timeout":    { "type": "number" },
					"interval":   { "type": "number" },
					"window":     { "type": "number" },
					"threashold": { "type": "number" }
			}
		},
		"clusters": {
			"description": "list of server pools",
			"type": "array",
			"items": {
				"type": "object",
				"required": ["name", "strategy", "backends"],
				"properties": {
					"name": { "type": "string" },
					"strategy": {
						"type": "string",
						"oneOf": [
							{ "format": "round_robin"},
							{ "format": "fallback"},
							{ "format": "hash"},
							{ "format": "random"}
						]
					},
					"backends": {
						"type": "array",
						"items": "strings"
					}
				}
			}
		},
		"rules": {
			"description": "list of inbound rules",
			"type": "array",
			"items": {
				"type": "object",
				"required": ["check", "route"],
				"properties": {
					"check": {
						"type": "string",
						"oneOf": [
							{ "format": "default"},
							{ "format": "equal"},
							{ "format": "not-equal"},
							{ "format": "regex"},
							{ "format": "not-regex"},
							{ "format": "startswith"},
							{ "format": "not-startwith"},
							{ "format": "wildcard"},
							{ "format": "not-wildcard"}
						]
					},
					"field": {
						"type": "string",
						"oneOf": [
							{ "format": "url"},
							{ "format": "path"},
							{ "format": "querystring"},
							{ "format": "host"},
						]
					},
					"pattern": {"type": "string"},
					"route": {"type": "string"},
				}
			}
		}
	}
}