Struct NativeVclBackendShim 

pub struct NativeVclBackendShim;

Placeholder backend implementation for native Varnish backends.

This type exists only to satisfy the trait bounds for Backend<S, T> when wrapping native backends. None of its methods should ever be called.

Trait Implementations

impl Debug for NativeVclBackendShim

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

Formats the value using the given formatter.

impl VclBackend<NativeVclResponseShim> for NativeVclBackendShim

fn get_response( &self, _ctx: &mut Ctx<'_>, ) -> Result<Option<NativeVclResponseShim>, VclError>

If the VCL pick this backend (or a director ended up choosing it), this method gets called so that the VclBackend implementer can:

fn finish(&self, _ctx: &mut Ctx<'_>)

Once a backend transaction is finished, the Backend has a chance to clean up, collect data and others in the finish methods.

fn probe(&self, _ctx: &mut Ctx<'_>) -> (bool, SystemTime)

Is your backend healthy, and when did its health change for the last time.

fn pipe(&self, ctx: &mut Ctx<'_>, _tcp_stream: TcpStream) -> StreamClose

If your backend is used inside vcl_pipe, this method is in charge of sending the request headers that Varnish already read, and then the body. The second argument, a TcpStream is the raw client stream that Varnish was using (converted from a raw fd).

fn event(&self, _event: VclEvent)

The method will get called when the VCL changes temperature or is discarded. It’s notably a chance to start/stop probes to consume fewer resources.

fn panic(&self, _vsb: &mut Buffer<'_>)

fn report(&self, ctx: &mut Ctx<'_>, vsb: &mut Buffer<'_>)

Generate simple report output for varnishadm backend.list (no flags)

fn report_details(&self, _ctx: &mut Ctx<'_>, _vsb: &mut Buffer<'_>)

Generate detailed report output for varnishadm backend.list -p

fn report_json(&self, ctx: &mut Ctx<'_>, vsb: &mut Buffer<'_>)

Generate simple JSON report output for varnishadm backend.list -j

fn report_details_json(&self, _ctx: &mut Ctx<'_>, vsb: &mut Buffer<'_>)

Generate detailed JSON report output for varnishadm backend.list -j -p