pub struct AsyncStorage { /* private fields */ }
Expand description

A file-based, multi-database, multi-user database engine. This type is designed for use with Tokio. For blocking (non-asynchronous) code, see the Storage type instead.

Converting between Blocking and Async Types

AsyncDatabase and Database can be converted to and from each other using:

Converting from AsyncDatabase::open to AsyncStorage::open

AsyncDatabase::open is a simple method that uses AsyncStorage to create a database named default with the schema provided. These two ways of opening the database are the same:

// `bonsaidb_core` is re-exported to `bonsaidb::core` or `bonsaidb_local::core`.
use bonsaidb_core::connection::AsyncStorageConnection;
use bonsaidb_core::schema::Schema;
// `bonsaidb_local` is re-exported to `bonsaidb::local` if using the omnibus crate.
use bonsaidb_local::{
    config::{Builder, StorageConfiguration},
    AsyncDatabase, AsyncStorage,
};
// This creates a Storage instance, creates a database, and returns it.
let db = AsyncDatabase::open::<MySchema>(StorageConfiguration::new("my-db.bonsaidb")).await?;

// This is the equivalent code being executed:
let storage =
    AsyncStorage::open(StorageConfiguration::new("my-db.bonsaidb").with_schema::<MySchema>()?)
        .await?;
storage.create_database::<MySchema>("default", true).await?;
let db = storage.database::<MySchema>("default").await?;

Using multiple databases

This example shows how to use AsyncStorage to create and use multiple databases with multiple schemas:

use bonsaidb_core::connection::AsyncStorageConnection;
use bonsaidb_core::schema::{Collection, Schema};
use bonsaidb_local::config::{Builder, StorageConfiguration};
use bonsaidb_local::AsyncStorage;
use serde::{Deserialize, Serialize};

#[derive(Debug, Schema)]
#[schema(name = "my-schema", collections = [BlogPost, Author])]
struct MySchema;

#[derive(Debug, Serialize, Deserialize, Collection)]
#[collection(name = "blog-posts")]
struct BlogPost {
    pub title: String,
    pub contents: String,
    pub author_id: u64,
}

#[derive(Debug, Serialize, Deserialize, Collection)]
#[collection(name = "blog-posts")]
struct Author {
    pub name: String,
}

let storage = AsyncStorage::open(
    StorageConfiguration::new("my-db.bonsaidb")
        .with_schema::<BlogPost>()?
        .with_schema::<MySchema>()?,
)
.await?;

storage
    .create_database::<BlogPost>("ectons-blog", true)
    .await?;
let ectons_blog = storage.database::<BlogPost>("ectons-blog").await?;
storage
    .create_database::<MySchema>("another-db", true)
    .await?;
let another_db = storage.database::<MySchema>("another-db").await?;

Implementations§

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impl AsyncStorage

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pub async fn open( configuration: StorageConfiguration ) -> Result<AsyncStorage, Error>

Creates or opens a multi-database AsyncStorage with its data stored in directory.

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pub async fn restore<L>(&self, location: L) -> Result<(), Error>
where L: AnyBackupLocation + 'static,

Restores all data from a previously stored backup location.

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pub async fn backup<L>(&self, location: L) -> Result<(), Error>
where L: AnyBackupLocation + 'static,

Stores a copy of all data in this instance to location.

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pub fn with_effective_permissions( &self, effective_permissions: Permissions ) -> Option<AsyncStorage>

Restricts an unauthenticated instance to having effective_permissions. Returns None if a session has already been established.

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pub fn into_blocking(self) -> Storage

Converts this instance into its blocking version, which is able to be used without async.

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pub fn to_blocking(&self) -> Storage

Converts this instance into its blocking version, which is able to be used without async.

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pub fn as_blocking(&self) -> &Storage

Returns a reference to this instance’s blocking version, which is able to be used without async.

Trait Implementations§

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impl AsyncStorageConnection for AsyncStorage

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type Authenticated = AsyncStorage

The StorageConnection type returned from authentication calls.
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type Database = AsyncDatabase

The type that represents a database for this implementation.
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fn admin<'life0, 'async_trait>( &'life0 self ) -> Pin<Box<dyn Future<Output = <AsyncStorage as AsyncStorageConnection>::Database> + Send + 'async_trait>>
where 'life0: 'async_trait, AsyncStorage: 'async_trait,

Returns the currently authenticated session, if any.
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fn create_database_with_schema<'life0, 'life1, 'async_trait>( &'life0 self, name: &'life1 str, schema: SchemaName, only_if_needed: bool ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, AsyncStorage: 'async_trait,

Creates a database named name using the SchemaName schema. Read more
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fn database<'life0, 'life1, 'async_trait, DB>( &'life0 self, name: &'life1 str ) -> Pin<Box<dyn Future<Output = Result<<AsyncStorage as AsyncStorageConnection>::Database, Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, DB: 'async_trait + Schema, AsyncStorage: 'async_trait,

Returns a reference to database name with schema DB.
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fn delete_database<'life0, 'life1, 'async_trait>( &'life0 self, name: &'life1 str ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, AsyncStorage: 'async_trait,

Deletes a database named name. Read more
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fn list_databases<'life0, 'async_trait>( &'life0 self ) -> Pin<Box<dyn Future<Output = Result<Vec<Database>, Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, AsyncStorage: 'async_trait,

Lists the databases in this storage.
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fn list_available_schemas<'life0, 'async_trait>( &'life0 self ) -> Pin<Box<dyn Future<Output = Result<Vec<SchemaSummary>, Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, AsyncStorage: 'async_trait,

Lists the SchemaNames registered with this storage.
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fn create_user<'life0, 'life1, 'async_trait>( &'life0 self, username: &'life1 str ) -> Pin<Box<dyn Future<Output = Result<u64, Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, AsyncStorage: 'async_trait,

Creates a user.
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fn delete_user<'user, 'life0, 'async_trait, U>( &'life0 self, user: U ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'user: 'async_trait, 'life0: 'async_trait, U: 'async_trait + Nameable<'user, u64> + Send + Sync, AsyncStorage: 'async_trait,

Deletes a user.
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fn set_user_password<'user, 'life0, 'async_trait, U>( &'life0 self, user: U, password: SensitiveString ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'user: 'async_trait, 'life0: 'async_trait, U: 'async_trait + Nameable<'user, u64> + Send + Sync, AsyncStorage: 'async_trait,

Sets a user’s password.
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fn authenticate<'life0, 'async_trait>( &'life0 self, authentication: Authentication ) -> Pin<Box<dyn Future<Output = Result<AsyncStorage, Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, AsyncStorage: 'async_trait,

Authenticates using an AuthenticationToken. If successful, the returned instance will have the permissions from identity.
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fn assume_identity<'life0, 'life1, 'async_trait>( &'life0 self, identity: IdentityReference<'life1> ) -> Pin<Box<dyn Future<Output = Result<<AsyncStorage as AsyncStorageConnection>::Authenticated, Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, AsyncStorage: 'async_trait,

Assumes the identity. If successful, the returned instance will have the merged permissions of the current authentication session and the permissions from identity.
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fn add_permission_group_to_user<'user, 'group, 'life0, 'async_trait, U, G>( &'life0 self, user: U, permission_group: G ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'user: 'async_trait, 'group: 'async_trait, 'life0: 'async_trait, U: 'async_trait + Nameable<'user, u64> + Send + Sync, G: 'async_trait + Nameable<'group, u64> + Send + Sync, AsyncStorage: 'async_trait,

Adds a user to a permission group.
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fn remove_permission_group_from_user<'user, 'group, 'life0, 'async_trait, U, G>( &'life0 self, user: U, permission_group: G ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'user: 'async_trait, 'group: 'async_trait, 'life0: 'async_trait, U: 'async_trait + Nameable<'user, u64> + Send + Sync, G: 'async_trait + Nameable<'group, u64> + Send + Sync, AsyncStorage: 'async_trait,

Removes a user from a permission group.
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fn add_role_to_user<'user, 'group, 'life0, 'async_trait, U, G>( &'life0 self, user: U, role: G ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'user: 'async_trait, 'group: 'async_trait, 'life0: 'async_trait, U: 'async_trait + Nameable<'user, u64> + Send + Sync, G: 'async_trait + Nameable<'group, u64> + Send + Sync, AsyncStorage: 'async_trait,

Adds a user to a permission group.
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fn remove_role_from_user<'user, 'group, 'life0, 'async_trait, U, G>( &'life0 self, user: U, role: G ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'user: 'async_trait, 'group: 'async_trait, 'life0: 'async_trait, U: 'async_trait + Nameable<'user, u64> + Send + Sync, G: 'async_trait + Nameable<'group, u64> + Send + Sync, AsyncStorage: 'async_trait,

Removes a user from a permission group.
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fn create_database<'life0, 'life1, 'async_trait, DB>( &'life0 self, name: &'life1 str, only_if_needed: bool ) -> Pin<Box<dyn Future<Output = Result<Self::Database, Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, DB: 'async_trait + Schema, Self: 'async_trait,

Creates a database named name with the Schema provided. Read more
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fn authenticate_with_token<'life0, 'life1, 'async_trait>( &'life0 self, id: u64, token: &'life1 SensitiveString ) -> Pin<Box<dyn Future<Output = Result<<Self::Authenticated as AsyncStorageConnection>::Authenticated, Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, Self: 'async_trait,

Authenticates using an AuthenticationToken. If successful, the returned instance will have the permissions from identity.
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fn authenticate_with_password<'name, 'life0, 'async_trait, User>( &'life0 self, user: User, password: SensitiveString ) -> Pin<Box<dyn Future<Output = Result<Self::Authenticated, Error>> + Send + 'async_trait>>
where 'name: 'async_trait, 'life0: 'async_trait, User: 'async_trait + Nameable<'name, u64> + Send, Self: 'async_trait,

Authenticates a User using a password. If successful, the returned instance will have the permissions from identity.
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impl Clone for AsyncStorage

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fn clone(&self) -> AsyncStorage

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for AsyncStorage

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

Formats the value using the given formatter. Read more
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impl<'a> From<&'a AsyncStorage> for Storage

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fn from(storage: &'a AsyncStorage) -> Storage

Converts to this type from the input type.
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impl From<AsyncStorage> for Storage

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fn from(storage: AsyncStorage) -> Storage

Converts to this type from the input type.
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impl HasSession for AsyncStorage

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fn session(&self) -> Option<&Session>

Returns the currently authenticated session, if any.
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fn allowed_to<'a, R, P>(&self, resource_name: R, action: &P) -> bool
where R: AsRef<[Identifier<'a>]>, P: Action,

Checks if action is permitted against resource_name.
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fn check_permission<'a, R, P>( &self, resource_name: R, action: &P ) -> Result<(), Error>
where R: AsRef<[Identifier<'a>]>, P: Action,

Checks if action is permitted against resource_name. If permission is denied, returns a PermissionDenied error.
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impl StorageNonBlocking for AsyncStorage

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fn path(&self) -> &Path

Returns the path of the database storage.
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fn assume_session(&self, session: Session) -> Result<AsyncStorage, Error>

Returns a new instance of Storage with session as the effective authentication session. This call will only succeed if there is no current session.

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