configuration

type ExportersConfig struct {
	// Enabled contains the list of named exporters that should be started.
	Enabled []string `json:"enabled"`

	// KafkaBatchBytes is the max message bytes that will be buffered before
	// flushing messages to a partition.
	KafkaBatchBytes int64 `json:"kafka_batch_bytes"`
	// KafkaBatchSize is the max number of messages that will be buffered before
	// flushing messages to a partition.
	KafkaBatchSize int `json:"kafka_batch_size"`
	// KafkaBatchTimeout is the max amount of time that will pass before
	// buffered messages are flushed to a partition.
	KafkaBatchTimeout time.Duration `json:"kafka_batch_timeout"`
	// KafkaBrokers contains the list of Kafka broker addresses and ports to
	// connect to.
	KafkaBrokers []string `json:"kafka_brokers"`
	// KafkaLogging enables info level logging from the Kafka writer. Kafka
	// error logging is always enabled.
	KafkaLogging bool `json:"kafka_logging"`
	// KafkaTopic is the name of the Kafka topic to send exported gNMI messages
	// to.
	KafkaTopic string `json:"kafka_topic"`

	// InfluxDBTarget is the target URL for influx connections
	InfluxDBTarget string `json:"influxdb_target"`
	// InfluxDBOrg is organizaion workspace
	InfluxDBOrg string `json:"influxdb_org"`
	// InfluxDBBucket is the named collection for storing time series data
	InfluxDBBucket string `json:"influxdb_bucket"`
	// InfluxDBToken is used to authenticate the session
	InfluxDBToken string `json:"infludb_token"`
	// InfluxDBBatchSize the number of lines or individual data points in a
	// line protocol batch.
	InfluxDBBatchSize uint `json:"influxdb_batch_size"`
}

type GatewayConfig struct {
	// ClientTLSConfig are the gNMI client TLS credentials. Setting this will enable client TLS.
	// TODO (cmcintosh): Add options to set client certificates by path (i.e. like the server TLS creds).
	ClientTLSConfig *tls.Config `ignored:"true"`
	// EnableGNMIServer will run the gNMI server (the Subscribe server). TLS options are also required
	// for the gNMI server to be enabled.
	EnableGNMIServer bool `json:"enable_gnmi_server"`
	// Exporters contains the configuration for the included exporters.
	Exporters *ExportersConfig `json:"exporters"`
	// GatewayTransitionBufferSize tunes the size of the buffer between targets and exporters/clients.
	GatewayTransitionBufferSize uint64 `json:"gateway_transition_buffer_size"`
	// Log is the logger used by the gateway code and gateway packages.
	Log zerolog.Logger
	// LogCaller will add the file path and line number to all log messages.
	LogCaller bool `json:"log_caller"`
	// OpenConfigDirectory is the folder path to a clone of github.com/openconfig/public.
	// OpenConfigDirectory is required for value typing if any exporters are enabled.
	OpenConfigDirectory string `json:"openconfig_directory"`
	// ServerAddress is the address where other cluster members can reach the gNMI server.
	// The first assigned IP address is used if the parameter is not provided.
	ServerAddress string `json:"server_address"`
	// ServerPort is the TCP port where other cluster members can reach the gNMI server.
	// ServerListenPort is used if the parameter is not provided.
	ServerPort int `json:"server_port"`
	// ServerListenAddress is the interface IP address the gNMI server will listen on.
	ServerListenAddress string `json:"server_listen_address"`
	// ServerListenPort is the TCP port the gNMI server will listen on.
	ServerListenPort int `json:"server_listen_port"`
	// ServerTLSCreds are the gNMI Server TLS credentials. You must specify either this or both
	// ServerTLSCert and ServerTLSKey if you set -EnableGNMIServer.
	ServerTLSCreds credentials.TransportCredentials
	// ServerTLSCert is the path to the file containing the PEM-encoded x509 gNMI server TLS certificate.
	// See the gateway package for instructions for generating a self-signed certificate.
	ServerTLSCert string `json:"server_tls_cert"`
	// ServerTLSCert is the path to the file containing the PEM-encoded x509 gNMI server TLS key.
	// See the gateway package for instructions for generating a self-signed certificate key.
	ServerTLSKey string `json:"server_tls_key"`
	// StatsSpectatorConfig is the configuration used for Spectator.
	// Either this or StatsSpectatorURI must be set to enable sending internal
	// gnmi-gateway metrics to Atlas.
	StatsSpectatorConfig *spectator.Config
	// StatsSpectatorURI is the URI used for sending metrics to Spectator.
	// Either this or StatsSpectatorConfig must be set to enable sending internal
	// gnmi-gateway metrics to Atlas.
	StatsSpectatorURI string `json:"stats_spectator_uri"`
	// TargetLoaders contains the configuration for the included target loaders.
	TargetLoaders *TargetLoadersConfig `json:"target_loaders"`
	// TargetDialTimeout is the network transport timeout time for dialing the target connection.
	TargetDialTimeout time.Duration `json:"target_dial_timeout"`
	// TargetLimit is the maximum number of targets that this instance will connect to at once.
	// TargetLimit can also be considered the number of "connection slots" available on this
	// gateway instance. For failover of targets to other cluster members to complete fully
	// there needs to be sufficient connection slots available on other cluster members.
	TargetLimit int `json:"target_limit"`
	// UpdateRejections are a list of gNMI paths that may be matched against for messages that
	// are to be dropped prior to being inserted into the cache. This is useful for blocking
	// portions of the tree that you are not interested in but still need a subscription for.
	UpdateRejections [][]*gnmipb.PathElem
	// ZookeeperHosts are all of the addresses for members of your Zookeeper ensemble.
	// Setting ZookeeperHosts will enable clustering. -EnableGNMIServer is required
	// for clustering to be enabled.
	ZookeeperHosts []string `json:"zookeeper_hosts"`
	// ZookeeperPrefix is the prefix for the lock path in Zookeeper (e.g. /gnmi/gateway).
	ZookeeperPrefix string `json:"zookeeper_prefix"`
	// ZookeeperTimeout is the Zookeeper connection transport timeout time.
	// Minimum ZookeeperTimeout is ('your Zookeeper server tickTime' * 2).
	// Failover of targets will take (ZookeeperTimeout * 2) time.
	ZookeeperTimeout time.Duration `json:"zookeeper_timeout"`
}

type TargetLoadersConfig struct {
	// Enabled contains the list of named target loaders that should be started.
	Enabled []string `json:"enabled"`

	// JSONFile is the path to a JSON file containing the configuration for
	// gNMI targets and subscribe requests. The file will be checked for
	// changes every TargetJSONFileReloadInterval.
	JSONFile string `json:"json_file"`
	// JSONFileReloadInterval is the interval to check TargetJSONFile for changes.
	JSONFileReloadInterval time.Duration `json:"json_file_reload_interval"`

	// NetBoxAPIKey is a valid API for the NetBox instance.
	NetBoxAPIKey string
	// NetBoxDeviceGNMIPort is the port on the device that the gNMI server is
	// running on.
	NetBoxDeviceGNMIPort int
	// NetBoxDeviceUsername is the username of the devices to connect to.
	// TODO (cmcintosh): replace this with NetBox secrets
	NetBoxDeviceUsername string
	// NetBoxDevicePossword is the passowrd of the devices to connect to.
	// TODO (cmcintosh): replace this with NetBox secrets
	NetBoxDevicePassword string
	// NetBoxHost is the address and port of the NetBox server.
	NetBoxHost string
	// NetBoxIncludeTag is a tag to filter devices in NetBox by. If no tag is
	// supplied all devices in NetBox with valid details are included. You
	// probably want to set this unless all of your devices support gNMI.
	NetBoxIncludeTag string
	// NetBoxReloadInterval is the frequency at which to check NetBox for
	// changes to devices.
	NetBoxReloadInterval time.Duration
	// NetBoxSubscribePaths is a list of XPath subscription paths for the
	// devices in NetBox.
	NetBoxSubscribePaths []string

	// SimpleFile is the path to a YAML file containing a simple target config.
	SimpleFile string `json:"simple_file"`
	// SimpleFileReloadInterval is the interval to check SimpleFile for changes.
	SimpleFileReloadInterval time.Duration `json:"simple_file_reload_interval"`
}