Struct Request

pub struct Request {
    pub start_block_num: i64,
    pub cursor: String,
    pub stop_block_num: u64,
    pub final_blocks_only: bool,
    pub transforms: Vec<Any>,
}

Create Firehose API fetch requests.

Fields

start_block_num: i64

Controls where the stream of blocks will start.

The stream will start inclusively at the requested block num.

When not provided, starts at first streamable block of the chain. Not all chain starts at the same block number, so you might get an higher block than requested when using default value of 0.

Can be negative, will be resolved relative to the chain head block, assuming a chain at head block #100, then using -50 as the value will start at block #50. If it resolves before first streamable block of chain, we assume start of chain.

If start_cursor is given, this value is ignored and the stream instead starts immediately after the Block pointed by the opaque start_cursor value.

cursor: String

Controls where the stream of blocks will start which will be immediately after the Block pointed by this opaque cursor.

Obtain this value from a previously received Response.cursor.

This value takes precedence over start_block_num.

stop_block_num: u64

When non-zero, controls where the stream of blocks will stop.

The stream will close after that block has passed so the boundary is inclusive.

final_blocks_only: bool

With final_block_only, you only receive blocks with STEP_FINAL Default behavior will send blocks as STEP_NEW, with occasional STEP_UNDO

transforms: Vec<Any>

Trait Implementations

impl Clone for Request

fn clone(&self) -> Request

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Request

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

Formats the value using the given formatter.

impl Default for Request

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Request

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for Request

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

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

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

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

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Request

fn eq(&self, other: &Request) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Request

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Request