Enum FetchType

pub enum FetchType {
    New,
    Pending,
    After(StreamId),
}

Possible ways to read items from queue

Variants

New

Requests new messages.

New means not yet read by anyone.

Pending

Attempts to fetch only pending message.

If returns empty result, it means all messages were successfully consumed.

After(StreamId)

Fetch all pending messages after specified id.

Trait Implementations

impl ToRedisArgs for FetchType

fn write_redis_args<W: ?Sized + RedisWrite>(&self, out: &mut W)

This writes the value into a vector of bytes. Each item is a single argument. Most items generate a single item.

fn is_single_arg(&self) -> bool

Returns an indiciation if the value contained is exactly one argument. It returns false if it’s zero or more than one. This is used in some high level functions to intelligently switch between GET and MGET variants.

fn to_redis_args(&self) -> Vec<Vec<u8>>

This converts the value into a vector of bytes. Each item is a single argument. Most items generate a vector of a single item.

fn describe_numeric_behavior(&self) -> NumericBehavior

Returns an information about the contained value with regards to it’s numeric behavior in a redis context. This is used in some high level concepts to switch between different implementations of redis functions (for instance INCR vs INCRBYFLOAT).