Struct Context 

pub struct Context {
    pub id: ContextId,
    pub content: String,
    pub domain: ContextDomain,
    pub created_at: DateTime<Utc>,
    pub accessed_at: DateTime<Utc>,
    pub expires_at: Option<DateTime<Utc>>,
    pub metadata: ContextMetadata,
    pub embedding: Option<Vec<f32>>,
}

A context entry for storage and retrieval

Inspired by memory-gate’s LearningContext with additions for:

• Temporal reasoning (created_at, accessed_at, expires_at)
• Security screening integration
• RAG-optimized fields

Fields

id: ContextId

Unique identifier

content: String

Main content of the context

domain: ContextDomain

Domain classification

created_at: DateTime<Utc>

When this context was created

accessed_at: DateTime<Utc>

When this context was last accessed

expires_at: Option<DateTime<Utc>>

Optional expiration time

metadata: ContextMetadata

Associated metadata

embedding: Option<Vec<f32>>

Optional embedding vector for similarity search

Implementations

impl Context

pub fn new(content: impl Into<String>, domain: ContextDomain) -> Self

Create a new context entry

pub fn with_id(self, id: ContextId) -> Self

Create with a specific ID

pub fn with_metadata(self, metadata: ContextMetadata) -> Self

Set metadata

pub fn with_source(self, source: impl Into<String>) -> Self

Set source in metadata

pub fn with_importance(self, importance: f32) -> Self

Set importance

pub fn with_tags(self, tags: Vec<String>) -> Self

Add tags

pub fn with_expiration(self, expires_at: DateTime<Utc>) -> Self

Set expiration

pub fn with_embedding(self, embedding: Vec<f32>) -> Self

Set embedding vector

pub fn with_ttl(self, ttl: Duration) -> Self

Set TTL (time to live)

pub fn is_expired(&self) -> bool

Check if context has expired

pub fn age_seconds(&self) -> i64

Get age in seconds

pub fn age_hours(&self) -> f64

Get age in hours (useful for temporal reasoning)

pub fn mark_accessed(&mut self)

Mark as accessed (updates accessed_at)

pub fn is_safe(&self) -> bool

Check if context is safe to use (screened)

Trait Implementations

impl Clone for Context

fn clone(&self) -> Context

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Context

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Context

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Context

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

where __S: Serializer,

Serialize this value into the given Serde serializer.