Struct PortAssignments 

pub struct PortAssignments { /* private fields */ }

Persistent mapping of service keys to allocated host ports.

Keys follow the format "{service_name}-{container_port}" (e.g. "example-drive-80"). Loaded from and saved to ports.json in the state directory.

Implementations

impl PortAssignments

pub fn load(path: &Path) -> Self

Load assignments from a JSON file. Returns empty defaults if the file does not exist or is unreadable.

pub fn save(&self, path: &Path) -> Result<(), Error>

Persist assignments to a JSON file. Creates parent directories as needed.

pub fn get(&self, key: &str) -> Option<u16>

Look up a port assignment by key. Returns None if not assigned.

pub fn set(&mut self, key: String, port: u16)

Assign a port for the given key.

pub fn remove(&mut self, key: &str) -> Option<u16>

Remove an assignment by key. Returns the previously assigned port, or None.

pub fn is_used(&self, port: u16) -> bool

Returns true if the given port is already assigned.

pub fn get_or_allocate(&mut self, key: &str) -> Option<u16>

Look up an existing assignment, or allocate a free port and assign it.

Returns None if no port is available in the ephemeral range.

Trait Implementations

impl Clone for PortAssignments

fn clone(&self) -> PortAssignments

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PortAssignments

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for PortAssignments

fn default() -> PortAssignments

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PortAssignments

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for PortAssignments

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.