Struct MemoryStorageEngine 

pub struct MemoryStorageEngine { /* private fields */ }

In-memory storage engine.

Stores emails in memory using a HashMap structure. Useful for testing and development.

Structure: HashMap<user, HashMap<message_id, EmailMessage>>

Implementations

impl MemoryStorageEngine

pub fn new() -> Self

Creates a new empty MemoryStorageEngine.

pub fn message_count(&self, user: &str) -> usize

Returns the number of messages stored for a user.

pub fn total_message_count(&self) -> usize

Returns the total number of messages stored across all users.

pub fn clear(&self)

Clears all messages and mailboxes.

Trait Implementations

impl Debug for MemoryStorageEngine

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

Formats the value using the given formatter.

impl Default for MemoryStorageEngine

fn default() -> MemoryStorageEngine

Returns the “default value” for a type.

impl StorageEngine for MemoryStorageEngine

async fn store(&self, message: &EmailMessage) -> StorageResult<String>

Stores an email message for a recipient.

async fn retrieve(&self, user: &str, message_id: &str) -> StorageResult<String>

Retrieves an email message by ID for a user.

async fn list(&self, user: &str) -> StorageResult<Vec<String>>

Lists all message IDs for a user.

async fn delete(&self, user: &str, message_id: &str) -> StorageResult<()>

Deletes a message by ID for a user.

async fn create_mailbox(&self, user: &str, mailbox: &str) -> StorageResult<()>

Creates a mailbox for a user.