Trait WriteObjectHandle 

pub trait WriteObjectHandle: ObjectHandle {
    // Required methods
    fn write_or_append(
        &self,
        offset: Option<u64>,
        buf: BufferRef<'_>,
    ) -> impl Future<Output = Result<u64, Error>> + Send;
    fn truncate(
        &self,
        size: u64,
    ) -> impl Future<Output = Result<(), Error>> + Send;
    fn flush(&self) -> impl Future<Output = Result<(), Error>> + Send;
}

Required Methods

fn write_or_append( &self, offset: Option<u64>, buf: BufferRef<'_>, ) -> impl Future<Output = Result<u64, Error>> + Send

Writes |buf.len())| bytes at |offset| (or the end of the file), returning the object size after writing. The writes may be cached, in which case a later call to |flush| is necessary to persist the writes.

fn truncate(&self, size: u64) -> impl Future<Output = Result<(), Error>> + Send

Truncates the object to |size| bytes. The truncate may be cached, in which case a later call to |flush| is necessary to persist the truncate.

fn flush(&self) -> impl Future<Output = Result<(), Error>> + Send

Flushes all pending data and metadata updates for the object.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<S: HandleOwner> WriteObjectHandle for DataObjectHandle<S>