{
	"upload-topic": {
		"name": "upload topic",
		"description": "User defined upload topic",
		"type": "string",
		"attribute": "required",
		"default": "/neuron/${node-name}/upload",
		"valid": {
			"length": 255
		}
	},
	"heartbeat-topic": {
		"name": "heartbeat topic",
		"description": "User defined heartbeat topic",
		"type": "string",
		"attribute": "required",
		"default": "/neuron/${node-name}/heartbeat",
		"valid": {
			"length": 255
		}
	},
	"format": {
		"name": "upload format",
		"description": "Upload format on mqtt",
		"attribute": "optional",
		"type": "map",
		"default": 0,
		"valid": {
			"map": [
				{
					"key": "format-values",
					"value": 0
				},
				{
					"key": "format-tags",
					"value": 1
				}
			]
		}
	},
	"cache": {
		"name": "cache size(MB)",
		"description": "Upload data memory cache",
		"type": "int",
		"attribute": "optional",
		"default": 64,
		"valid": {
			"min": 1,
			"max": 256 
		}
	},
	"ssl": {
		"name": "ssl",
		"description": "Enable SSL connection",
		"attribute": "optional",
		"type": "bool",
		"default": false,
		"valid": {}
	},
	"host": {
		"name": "host",
		"description": "MQTT broker host",
		"attribute": "required",
		"type": "string",
		"default": "broker.emqx.io",
		"valid": {
			"length": 255
		}
	},
	"port": {
		"name": "port",
		"description": "MQTT broker port",
		"attribute": "required",
		"type": "int",
		"default": 1883,
		"valid": {
			"min": 1024,
			"max": 65535
		}
	},
	"username": {
		"name": "username",
		"description": "User name",
		"attribute": "optional",
		"type": "string",
		"default": "",
		"valid": {
			"length": 255
		}
	},
	"password": {
		"name": "password",
		"description": "Password",
		"attribute": "optional",
		"type": "string",
		"default": "",
		"valid": {
			"length":255 
		}
	},
	"ca": {
		"name": "CA",
		"description": "CA certificate file",
		"attribute": "required",
		"type": "file",
		"condition": {
			"field": "ssl",
			"value": true
		},
		"default": "",
		"valid": {
			"length": 81960
		}
	},
	"cert": {
		"name": "client cert",
		"description": "client x509 certificate file",
		"attribute": "optional",
		"type": "file",
		"condition": {
			"field": "ssl",
			"value": true
		},
		"default": "",
		"valid": {
			"length": 81960
		}
	},
	"key": {
		"name": "client key",
		"description": "client key file",
		"attribute": "optional",
		"type": "file",
		"condition": {
			"field": "ssl",
			"value": true
		},
		"default": "",
		"valid": {
			"length": 81960
		}
	},
	"keypass": {
		"name": "keypass",
		"description": "key password",
		"attribute": "optional",
		"type": "string",
		"condition": {
			"field": "ssl",
			"value": true
		},
		"default": "",
		"valid": {
			"length": 256
		}
	}
}