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use std::{collections::HashSet, path::PathBuf, time::Duration};
pub const NO_PREFERRED_ROUTE_HINT: u32 = 0;
/// A configuration object specifying which network transports Ditto should use
/// to sync data.
///
/// A `Ditto` object comes with a default transport configuration where all
/// available peer-to-peer transports are enabled. You can customize this by
/// initializing a `TransportConfig`, adjusting its properties, and supplying it
/// to `set_transport_config()` on `Ditto`.
///
/// When you initialize a `TransportConfig` yourself it starts with all
/// transports disabled. You must enable each one directly.
///
/// Peer-to-peer transports will automatically discover peers in the vicinity
/// and create connections without any configuration. These are configured
/// inside the `peer_to_peer` property. To turn each one on, set its `enabled`
/// property to `true`.
///
/// To connect to a peer at a known location, such as a Ditto Big Peer, add its
/// address inside the `connect` configuration. These are either `host:port`
/// strings for raw TCP sync, or a `wss://…` URL for websockets.
///
/// The `listen` configurations are for specific less common data sync
/// scenarios. Please read the documentation on the Ditto website for examples.
/// Incorrect use of `listen` can result in insecure configurations.
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct TransportConfig {
pub peer_to_peer: PeerToPeer,
pub connect: Connect,
pub listen: Listen,
pub global: Global,
}
impl TransportConfig {
pub fn new() -> Self {
Self {
peer_to_peer: PeerToPeer {
bluetooth_le: BluetoothLEConfig::new(),
lan: LanConfig::new(),
},
connect: Connect {
tcp_servers: HashSet::new(),
websocket_urls: HashSet::new(),
retry_interval: Duration::from_secs(5),
},
listen: Listen {
tcp: TcpListenConfig::new(),
http: HttpListenConfig::new(),
},
global: Global {
sync_group: 0,
routing_hint: NO_PREFERRED_ROUTE_HINT,
},
}
}
pub fn enable_all_peer_to_peer(&mut self) {
self.peer_to_peer.bluetooth_le.enabled = true;
self.peer_to_peer.lan.enabled = true;
}
}
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct PeerToPeer {
pub bluetooth_le: BluetoothLEConfig,
pub lan: LanConfig,
}
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct Connect {
/// A set of TCP servers to attempt connection to.
pub tcp_servers: HashSet<String>,
/// A set of websocket servers to attempt connection to.
pub websocket_urls: HashSet<String>,
/// The retry interval between failed connection attempts. For
/// cross-compatibility, this must be less than 2^32 - 1 milliseconds.
pub retry_interval: Duration,
}
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct Listen {
pub tcp: TcpListenConfig,
pub http: HttpListenConfig,
}
/// Settings not associated with any specific type of transport.
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct Global {
/// The sync group for this device.
///
/// When peer-to-peer transports are enabled, all devices with the same App
/// ID will normally form an interconnected mesh network. In some
/// situations it may be desirable to have distinct groups of devices
/// within the same app, so that connections will only be formed within
/// each group. The `sync_group` parameter changes that group
/// membership. A device can only ever be in one sync group, which
/// by default is group 0. Up to 2^32 distinct group numbers can be used in
/// an app.
///
/// This is an optimization, not a security control. If a connection is
/// created manually, such as by specifying a `connect` transport, then
/// devices from different sync groups will still sync as normal. If
/// two groups of devices are intended to have access to different data
/// sets, this must be enforced using Ditto's permissions system.
pub sync_group: u32,
/// The routing hint for this device.
///
/// A routing hint is a performance tuning option which can improve the performance of
/// applications that use large collections. Ditto will make a best effort to co-locate data
/// for the same routing key. In most circumstances, this should substantially improve
/// responsiveness of the Ditto Cloud.
///
/// The value of the routing hint is application specific - you are free to chose any value.
/// Devices which you expect to operate on much the same data should be configured to
/// use the same value.
///
/// A routing hint does not partition data. The value of the routing hint will not affect the
/// data returned for a query. The routing hint only improves the efficiency of the Cloud's
/// ability to satisfy the query.
pub routing_hint: u32,
}
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct HttpListenConfig {
pub enabled: bool,
pub interface_ip: String,
pub port: u16,
pub static_content_path: Option<PathBuf>,
pub websocket_sync: bool,
pub tls_key_path: Option<PathBuf>,
pub tls_certificate_path: Option<PathBuf>,
}
impl HttpListenConfig {
pub fn new() -> Self {
Self {
enabled: false,
interface_ip: "[::]".to_string(),
port: 80,
static_content_path: None,
websocket_sync: true,
tls_key_path: None,
tls_certificate_path: None,
}
}
}
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct TcpListenConfig {
pub enabled: bool,
pub interface_ip: String,
pub port: u16,
}
impl TcpListenConfig {
pub fn new() -> Self {
Self {
enabled: false,
interface_ip: "[::]".to_string(),
port: 4040,
}
}
}
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct BluetoothLEConfig {
pub enabled: bool,
}
impl BluetoothLEConfig {
pub fn new() -> Self {
Self { enabled: false }
}
}
#[derive(Clone, Debug, Default, PartialEq, Eq)]
pub struct LanConfig {
pub enabled: bool,
pub mdns_enabled: bool,
pub multicast_enabled: bool,
}
impl LanConfig {
pub fn new() -> Self {
Self {
enabled: false,
mdns_enabled: true,
multicast_enabled: true,
}
}
}