Struct TagManager 

pub struct TagManager {
    pub cache: RwLock<HashMap<String, TagMetadata>>,
    pub udt_definitions: RwLock<HashMap<String, UdtDefinition>>,
    /* private fields */
}

Manager for PLC tag discovery and caching

Fields

cache: RwLock<HashMap<String, TagMetadata>>

Discovered tag metadata keyed by fully qualified symbolic name.

udt_definitions: RwLock<HashMap<String, UdtDefinition>>

Discovered UDT definitions keyed by type name.

Implementations

impl TagManager

pub fn new() -> Self

Creates an empty metadata and UDT cache.

pub async fn get_metadata(&self, tag_name: &str) -> Result<Option<TagMetadata>>

Returns unexpired cached metadata for a tag.

pub async fn update_metadata( &self, tag_name: String, metadata: TagMetadata, ) -> Result<()>

Inserts or replaces cached tag metadata.

pub async fn validate_tag( &self, tag_name: &str, required_permissions: &TagPermissions, ) -> Result<()>

Validates that a cached tag grants the requested permissions.

pub async fn clear_cache(&self) -> Result<()>

Removes all cached tag metadata.

pub async fn remove_stale_entries(&self) -> Result<()>

Removes metadata older than the configured cache duration.

pub async fn discover_tags(&self, client: &mut EipClient) -> Result<()>

Enumerates controller tags and refreshes the metadata cache.

pub async fn discover_udt_members( &self, client: &mut EipClient, udt_name: &str, ) -> Result<Vec<(String, TagMetadata)>>

Discovers members of a UDT/structure

pub fn build_udt_definition_request(&self, _udt_name: &str) -> Result<Vec<u8>>

👎Deprecated since 1.2.0:

This method fabricated an invalid UDT request. Use EipClient::get_udt_definition or EipClient::discover_udt_members instead. It will be removed in 2.0.

Deprecated compatibility stub retained for 1.x SemVer.

pub fn parse_udt_definition_response( &self, _response: &[u8], _udt_name: &str, ) -> Result<UdtDefinition>

👎Deprecated since 1.2.0:

This method fabricated UDT members from arbitrary bytes. Use EipClient::get_udt_definition or EipClient::discover_udt_members instead. It will be removed in 2.0.

Deprecated compatibility stub retained for 1.x SemVer.

pub fn get_udt_definition_cached(&self, udt_name: &str) -> Option<UdtDefinition>

Gets a cached UDT definition

pub fn list_udt_definitions(&self) -> Vec<String>

Lists all cached UDT definitions

pub fn clear_udt_cache(&self)

Clears UDT definition cache

pub fn parse_tag_list( &self, response: &[u8], ) -> Result<Vec<(String, TagMetadata)>>

Parses a Symbol Object enumeration response into named metadata entries.

pub async fn drill_down_tags( &self, base_tags: &[(String, TagMetadata)], ) -> Result<Vec<(String, TagMetadata)>>

Recursively drill down into UDT structures (similar to TypeScript drillDown function)

Trait Implementations

impl Debug for TagManager

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

Formats the value using the given formatter.

impl Default for TagManager

fn default() -> Self

Returns the “default value” for a type.