multizone

type DdsClientConfig struct {
	config.BaseConfig

	// Interval for refreshing state of the world
	RefreshInterval config_types.Duration `json:"refreshInterval" envconfig:"DUBBO_MULTIZONE_ZONE_DDS_REFRESH_INTERVAL"`
	// If true, TLS connection to the server won't be verified.
	TlsSkipVerify bool `json:"tlsSkipVerify" envconfig:"DUBBO_MULTIZONE_ZONE_DDS_TLS_SKIP_VERIFY"`
	// RootCAFile defines a path to a file with PEM-encoded Root CA. Client will verify the server by using it.
	RootCAFile string `json:"rootCaFile" envconfig:"DUBBO_MULTIZONE_ZONE_DDS_ROOT_CA_FILE"`
	// MaxMsgSize defines a maximum size of the message that is exchanged using DDS.
	// In practice this means a limit on full list of one resource type.
	MaxMsgSize uint32 `json:"maxMsgSize" envconfig:"DUBBO_MULTIZONE_ZONE_DDS_MAX_MSG_SIZE"`
	// MsgSendTimeout defines a timeout on sending a single DDS message.
	// DDS stream between control planes is terminated if the control plane hits this timeout.
	MsgSendTimeout config_types.Duration `json:"msgSendTimeout" envconfig:"DUBBO_MULTIZONE_ZONE_DDS_MSG_SEND_TIMEOUT"`
	// Backoff that is executed when the zone control plane is sending the response that was previously rejected by global control plane.
	NackBackoff config_types.Duration `json:"nackBackoff" envconfig:"DUBBO_MULTIZONE_ZONE_DDS_NACK_BACKOFF"`
	// ResponseBackoff is a time Zone CP waits before sending ACK/NACK.
	// This is a way to slow down Global CP from sending resources too often.
	ResponseBackoff config_types.Duration `json:"responseBackoff" envconfig:"DUBBO_MULTIZONE_ZONE_DDS_RESPONSE_BACKOFF"`
}

type DdsServerConfig struct {
	config.BaseConfig

	// Port of a gRPC server that serves Dubbo Discovery Service (DDS).
	GrpcPort uint32 `json:"grpcPort" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_GRPC_PORT"`
	// Interval for refreshing state of the world
	RefreshInterval config_types.Duration `json:"refreshInterval" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_REFRESH_INTERVAL"`
	// Interval for flushing Zone Insights (stats of multi-zone communication)
	ZoneInsightFlushInterval config_types.Duration `json:"zoneInsightFlushInterval" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_ZONE_INSIGHT_FLUSH_INTERVAL"`
	// TlsEnabled turns on TLS for DDS
	TlsEnabled bool `json:"tlsEnabled" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_TLS_ENABLED"`
	// TlsCertFile defines a path to a file with PEM-encoded TLS cert.
	TlsCertFile string `json:"tlsCertFile" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_TLS_CERT_FILE"`
	// TlsKeyFile defines a path to a file with PEM-encoded TLS key.
	TlsKeyFile string `json:"tlsKeyFile" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_TLS_KEY_FILE"`
	// TlsMinVersion defines the minimum TLS version to be used
	TlsMinVersion string `json:"tlsMinVersion" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_TLS_MIN_VERSION"`
	// TlsMaxVersion defines the maximum TLS version to be used
	TlsMaxVersion string `json:"tlsMaxVersion" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_TLS_MAX_VERSION"`
	// TlsCipherSuites defines the list of ciphers to use
	TlsCipherSuites []string `json:"tlsCipherSuites" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_TLS_CIPHER_SUITES"`
	// MaxMsgSize defines a maximum size of the message that is exchanged using DDS.
	// In practice this means a limit on full list of one resource type.
	MaxMsgSize uint32 `json:"maxMsgSize" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_MAX_MSG_SIZE"`
	// MsgSendTimeout defines a timeout on sending a single DDS message.
	// DDS stream between control planes is terminated if the control plane hits this timeout.
	MsgSendTimeout config_types.Duration `json:"msgSendTimeout" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_MSG_SEND_TIMEOUT"`
	// Backoff that is executed when the global control plane is sending the response that was previously rejected by zone control plane.
	NackBackoff config_types.Duration `json:"nackBackoff" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_NACK_BACKOFF"`
	// DisableSOTW if true doesn't expose SOTW version of DDS. Default: false
	DisableSOTW bool `json:"disableSOTW" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_DISABLE_SOTW"`
	// ResponseBackoff is a time Global CP waits before sending ACK/NACK.
	// This is a way to slow down Zone CP from sending resources too often.
	ResponseBackoff config_types.Duration `json:"responseBackoff" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_RESPONSE_BACKOFF"`
	// ZoneHealthCheck holds config for ensuring zones are online
	ZoneHealthCheck ZoneHealthCheckConfig `json:"zoneHealthCheck"`
}

type GlobalConfig struct {
	// DDS Configuration
	DDS *DdsServerConfig `json:"dds,omitempty"`
}

type MultizoneConfig struct {
	Global *GlobalConfig `json:"global,omitempty"`
	Zone   *ZoneConfig   `json:"zone,omitempty"`
}

type ZoneConfig struct {
	// Dubbo Zone name used to mark the zone dataplane resources
	Name string `json:"name,omitempty" envconfig:"DUBBO_MULTIZONE_ZONE_NAME"`
	// GlobalAddress URL of Global Dubbo CP
	GlobalAddress string `json:"globalAddress,omitempty" envconfig:"DUBBO_MULTIZONE_ZONE_GLOBAL_ADDRESS"`
	// DDS Configuration
	DDS *DdsClientConfig `json:"dds,omitempty"`
	// DisableOriginLabelValidation disables validation of the origin label when applying resources on Zone CP
	DisableOriginLabelValidation bool `json:"disableOriginLabelValidation,omitempty" envconfig:"DUBBO_MULTIZONE_ZONE_DISABLE_ORIGIN_LABEL_VALIDATION"`
}

type ZoneHealthCheckConfig struct {
	config.BaseConfig

	// PollInterval is the interval between the global CP checking ZoneInsight for
	// health check pings and interval between zone CP sending health check pings
	PollInterval config_types.Duration `json:"pollInterval" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_ZONE_HEALTH_CHECK_POLL_INTERVAL"`
	// Timeout is the time after the last health check that a zone counts as
	// no longer online
	Timeout config_types.Duration `json:"timeout" envconfig:"DUBBO_MULTIZONE_GLOBAL_DDS_ZONE_HEALTH_CHECK_TIMEOUT"`
}