Struct OwnedResponse

pub struct OwnedResponse {
    pub extra: Vec<u8>,
    pub key: Vec<u8>,
    pub body: Vec<u8>,
    /* private fields */
}

Clones Buffers

Like a response but all it’s fields are owned so there are now lifetimes to manage but this also means you re-allocate AND copy the body/key/extra buffers

Fields

extra: Vec<u8>

key: Vec<u8>

body: Vec<u8>

Implementations

impl OwnedResponse

pub fn parse(x: &[u8]) -> ParseResult<Self>

Reads a full packet and COPIES it’s buffers into its own. Allocation is lazy. Fields that are not used are not allocated. Fields are not allocated WHILE parsing, only when complete.

pub fn encode_self(&self) -> Encoder

Allocates a new buffer and encodes this packets contents into it. this method works out to a handful of memcp primatives and is fairly quick as their is no bounds checking (buffer length is asserted on construction).

pub fn encode_into_buffer(&self, x: Vec<u8>) -> Encoder

If you are using a slab to avoid making too many allocations this method will check check the Vec<u8> it is passed only reserving additional capacity if necessary. If the Vec<u8> has enough capacity no action is taken.

pub fn new( opcode: OpCode, status: StatusField, opaque: u32, cas: u64, extra: Vec<u8>, key: Vec<u8>, body: Vec<u8>, ) -> Self

pub fn rebuild( &mut self, opcode: OpCode, status: StatusField, opaque: u32, cas: u64, extra: Vec<u8>, key: Vec<u8>, body: Vec<u8>, )

Over write an existing request

This is provided to allow for easier interfacing with SLAB’s. The semantics of this method are identical to the above. The primary difference is this doesn’t push ~100 bytes to the stack.

This interface does ABSOLUTELY NO verfication of the packet it is expected if you are calling this method you understand the memcached protocol and you are going to use this to generate a valid packet.

The goal of this interface is to be fast. Encoding a packet with this interface + Encode trait involves very few branches

Memcached only allows Keys that are ASCII and non-white space this interface does not do ANY assertions of this. Please be aware.

pub fn get_opcode(&self) -> OpCode

pub fn get_opaque(&self) -> u32

pub fn get_cas(&self) -> u64

pub fn check_status(&self) -> Result<(), StatusField>

If the condition StatusField::NoError is set this will return Ok(()), if there is an error it will return it in Err(StatusField::_)

All standard error codes are implemented.

pub fn has_extra(&self) -> bool

pub fn get_extra<'a>(&'a self) -> Option<&'a [u8]>

pub fn has_key(&self) -> bool

pub fn get_key<'a>(&'a self) -> Option<&'a [u8]>

pub fn get_key_str<'a>(&'a self) -> Option<&'a str>

The standard states the key should be an ASCII compatible string so this method preforms that conversion without checking for correctness.

This isnt a problem as the key will be hash/stored as a byte buffer anyways.

This really only opens the door to non standard things.

pub fn has_body(&self) -> bool

pub fn get_body<'a>(&'a self) -> Option<&'a [u8]>

Trait Implementations

impl Encoding for OwnedResponse

fn encode(&self, buffer: &mut Encoder)

Relatively fast method for encoding header

If you avoid the with::capacity method for constructing Encoder this method is prefectly safe and will encode the packet header without any bounds checks.

impl PacketVal for OwnedResponse

fn get_keylen(&self) -> usize

Get size of Packet’s Key Field

fn get_bodylen(&self) -> usize

Get size of Packet’s Body Field (Raw Data)

fn get_extralen(&self) -> usize

Get size of Packet’s Extra Field (Flags, Arguments, Etc. command specific)

fn total_len(&self) -> usize

The total length of the packet