Struct MetadataService 

pub struct MetadataService { /* private fields */ }

Instance metadata source (link-local address 169.254.169.254).

Implementations

impl MetadataService

pub const DEFAULT_BASE_URL: &'static str = "169.254.169.254"

Standard metadata service IP.

pub fn new() -> Self

Create a new metadata service.

pub fn with_url(base_url: String) -> Self

Create with a custom base URL.

pub fn get_instance_id(&self) -> Option<&str>

Get the instance ID.

pub fn get_hostname(&self) -> Option<&str>

Get the hostname.

pub fn get_public_keys(&self) -> Vec<&str>

Get public SSH keys.

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

Get a metadata value by key.

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

Set a metadata value (for testing or manual override).

pub fn base_url(&self) -> &str

Get the base URL.

pub fn fetch_metadata(&mut self) -> Result<(), CloudInitError>

Simulate fetching metadata from the link-local service.

In a real implementation this would make HTTP GET requests to http://169.254.169.254/latest/meta-data/{path}.

Trait Implementations

impl Debug for MetadataService

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

Formats the value using the given formatter.

impl Default for MetadataService

fn default() -> Self

Returns the “default value” for a type.