pub trait Accessor: Send + Sync + Debug {
fn create<'life0, 'life1, 'async_trait>(
&'life0 self,
args: &'life1 OpCreate
) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where
'life0: 'async_trait,
'life1: 'async_trait,
Self: 'async_trait,
{ ... }
fn read<'life0, 'life1, 'async_trait>(
&'life0 self,
args: &'life1 OpRead
) -> Pin<Box<dyn Future<Output = Result<BytesReader>> + Send + 'async_trait>>
where
'life0: 'async_trait,
'life1: 'async_trait,
Self: 'async_trait,
{ ... }
fn write<'life0, 'life1, 'async_trait>(
&'life0 self,
args: &'life1 OpWrite
) -> Pin<Box<dyn Future<Output = Result<BytesWriter>> + Send + 'async_trait>>
where
'life0: 'async_trait,
'life1: 'async_trait,
Self: 'async_trait,
{ ... }
fn stat<'life0, 'life1, 'async_trait>(
&'life0 self,
args: &'life1 OpStat
) -> Pin<Box<dyn Future<Output = Result<Metadata>> + Send + 'async_trait>>
where
'life0: 'async_trait,
'life1: 'async_trait,
Self: 'async_trait,
{ ... }
fn delete<'life0, 'life1, 'async_trait>(
&'life0 self,
args: &'life1 OpDelete
) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where
'life0: 'async_trait,
'life1: 'async_trait,
Self: 'async_trait,
{ ... }
fn list<'life0, 'life1, 'async_trait>(
&'life0 self,
args: &'life1 OpList
) -> Pin<Box<dyn Future<Output = Result<ObjectStreamer>> + Send + 'async_trait>>
where
'life0: 'async_trait,
'life1: 'async_trait,
Self: 'async_trait,
{ ... }
}
Expand description
Underlying trait of all backends for implementors.
Note to users
Only service implementor should care about this trait, users need to
use Operator
instead.
Note to services
- Path in args will all be normalized into the same style, services should handle them based on services requirement.
Provided Methods
Invoke the read
operation on the specified path, returns a
BytesReader
if operate successful.
Behavior
- Input path MUST be file path, DON’T NEED to check object mode.
Invoke the write
operation on the specified path, returns a
BytesWriter
if operate successful.
Behavior
- Input path MUST be file path, DON’T NEED to check object mode.
Invoke the stat
operation on the specified path.
Behavior
stat
empty path means stat backend’s root path.stat
a path endswith “/” means stating a dir.
Invoke the delete
operation on the specified path.
Behavior
delete
is an idempotent operation, it’s safe to callDelete
on the same path multiple times.delete
SHOULD returnOk(())
if the path is deleted successfully or not exist.
Invoke the list
operation on the specified path.
Behavior
- Input path MUST be dir path, DON’T NEED to check object mode.
Implementations on Foreign Types
sourceimpl<T: Accessor> Accessor for Arc<T>
impl<T: Accessor> Accessor for Arc<T>
All functions in Accessor
only requires &self
, so it’s safe to implement
Accessor
for Arc<dyn Accessor>
.