BinanceSpotRest (Binance Spot Rest v0.1.2)

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Entry point for making Binance Spot REST API requests.

Overview

This module provides a unified request/2 function that handles:

  • Optional validation of endpoint-specific query structs
  • Preparing the HTTP request
  • Signing and executing the request (or returning it for inspection)

You typically don’t need to call any other module directly — just build a query and pass it here.

Usage

  1. Build a query struct for the desired endpoint.
  2. Pass it to BinanceSpotRest.request/2.
  3. Optionally configure behavior via options (validation, execution, headers, etc.).

Example

alias BinanceSpotRest.Endpoints.Trading.OrderPost.LimitQuery

query = %LimitQuery{
  symbol: "LTCBTC",
  side: BinanceSpotRest.Enums.Side._BUY(),
  type: BinanceSpotRest.Enums.OrderType._LIMIT(),
  timeInForce: BinanceSpotRest.Enums.TimeInForce._GTC(),
  quantity: Decimal.new("1.0"),
  price: Decimal.new("0.00029")
}

{:ok, result} = BinanceSpotRest.request(query)

# With test overrides
BinanceSpotRest.request(query,
  execute: false,
  base_url: "https://mock.url",
  timestamp_fn: fn -> 1_740_000_000_000 end,
  signature_fn: fn _query_string, _secret_key -> "mock-signature" end
)

Low-level API (optional)

You can also use the lower-level functions directly:

import Loe
alias BinanceSpotRest.Endpoints.Trading.OrderPost.LimitQuery

query = %LimitQuery{
  symbol: "LTCBTC",
  side: BinanceSpotRest.Enums.Side._BUY(),
  type: BinanceSpotRest.Enums.OrderType._LIMIT(),
  timeInForce: BinanceSpotRest.Enums.TimeInForce._GTC(),
  quantity: Decimal.new("1.0"),
  price: Decimal.new("0.00029")
}

query
~>> BinanceSpotRest.Query.validate()
~>> BinanceSpotRest.Query.prepare()
~>> BinanceSpotRest.Client.create_request()
~>> BinanceSpotRest.Client.make_request()

# With overrides, without validation, and without executing the request
query
~>> BinanceSpotRest.Query.prepare()
~>> BinanceSpotRest.Client.create_request(
  base_url: "https://mock.url",
  headers: [{"FAKE_API_KEY", "fake_api_key"}],
  timestamp_fn: fn -> 1_740_000_000_000 end,
  signature_fn: fn _query_string, _secret_key -> "mock-signature" end
)

Endpoint Queries

Each Binance endpoint has its own query module under:

BinanceSpotRest.Endpoints.<Category>.<EndpointPath>.<QueryModule>

Where <EndpointPath> is derived from the endpoint path and HTTP method:

  • Example 1:

    • Endpoint: /api/v3/ticker/bookTicker
    • Method: GET
    • Module path: TickerBookTicker (method suffix omitted for GET)

  • Example 2:

    • Endpoint: /api/v3/order/amend/keepPriority
    • Method: PUT
    • Module path: OrderAmendKeepPriorityPut (HTTP method suffix added)

All query structs follow a consistent pattern and include field validation.

See Also

Summary

Types

opts()

Functions

request(q, opts \\ [])

Processes a query struct into a request and optionally validates or sends it.

Types

opts()

@type opts() :: [
  validate: boolean(),
  execute: boolean(),
  base_url: String.t(),
  headers: [{String.t(), String.t()}],
  secret_key_fn: (-> String.t()),
  timestamp_fn: (-> integer()),
  signature_fn: (String.t(), String.t() -> String.t())
]

Functions

request(q, opts \\ [])

@spec request(
  struct(),
  opts()
) :: {:ok, any()} | {:error, any()}

Processes a query struct into a request and optionally validates or sends it.

Options

This function accepts both internal control options and options that affect the underlying HTTP request.

Control Options

  • :validate (boolean, default: true) — whether to validate the query struct before preparing the request.
  • :execute (boolean, default: true) — whether to actually execute the HTTP request or just return the request struct.

Client Options

These options are forwarded to BinanceSpotRest.Client.create_request/2 and affect how the HTTP request is constructed:

  • :base_url (String.t()) — override the default Binance base URL (useful for testing or mocking).
  • :headers ([{String.t(), String.t()}]) — additional or replacement HTTP headers.
  • :secret_key_fn ((() -> String.t())) — a function that returns the Binance secret key.
  • :timestamp_fn ((() -> integer())) — a function that returns a timestamp (used in signed endpoints).
  • :signature_fn ((String.t(), String.t() -> String.t())) — a function to compute the request signature.

Examples

BinanceSpotRest.request(query)

BinanceSpotRest.request(query, validate: false)

BinanceSpotRest.request(query, execute: false)

BinanceSpotRest.request(query, validate: false, execute: false)

BinanceSpotRest.request(query,
  base_url: "https://test.binance.local",
  headers: [{"X-MOCK", "true"}],
  timestamp_fn: fn -> 1_740_000_000_000 end,
  signature_fn: fn _data, _key -> "mock-signature" end,
  execute: false
)

Returns either:

  • {:ok, response} if successful (or if execute: false, the request struct)
  • {:error, reason} if validation, preparation, or request execution fails