kingchenc
3a709d9a66
* feat(data): C-ABI Binance feed + Go binding (F4 wip)
C ABI exposes the existing async BinanceKlineStream (tokio + TLS, auto-reconnect,
mock-server-tested in wickra-data) through a blocking poll: wickra_binance_connect
/ _next(out, timeout_ms) -> {1 event, 0 timeout, -1 closed} / _close / _free over
an opaque BinanceStream that owns a current-thread runtime. WickraKlineEvent
carries OHLCV + open_time + is_closed + a 16-byte symbol buffer. `live-binance`
is now a default feature of wickra-c (the published DLL ships the feed; the wasm
build drops it via --no-default-features).
Go: NewBinanceFeed(symbols, interval, baseURL) + Next(timeout) + Close, with a
deterministic error-path smoke (the connect->event pipeline is covered by the
Rust mock-WS-server tests).
* feat(data): Binance feed C# + Java bindings (F4 wip)
C#: BinanceFeed(symbols, interval, baseUrl?) + Next(timeout) -> KlineEvent? +
Dispose; bespoke WickraKlineEvent native struct (fixed symbol buffer + byte
is_closed) since the scalar struct parser can't model it. `char` maps to `byte`
for the const char* params.
Java: BinanceFeed + KlineEvent record + BinanceInterval enum over Panama FFM;
the event is read at hand-computed offsets (symbol@0, doubles@16..48,
open_time@56, is_closed@64; 72-byte struct). Both with deterministic error-path
smokes (pipeline covered by the Rust mock-WS-server tests).
* feat(data): Binance feed R binding (F4 wip)
R: BinanceFeed(symbols, interval, base_url) + binance_next(feed, timeout_ms) ->
named list | NULL + binance_close, via bespoke .Call glue (wk_binance_*). The
glue + its registration entries are gated out of the Emscripten/wasm build
(#ifndef __EMSCRIPTEN__) since r-universe/webR has no raw sockets. NAMESPACE
exports added by hand (roxygen2 not installed locally). Deterministic error-path
smoke; pipeline covered by the Rust mock-WS-server tests.
* feat(data): native Binance feed for Node + Python; CHANGELOG (F4 complete)
Node (napi) BinanceFeed: new(symbols, interval, baseUrl?) + next(timeoutMs) ->
KlineEvent | null + close. Python (pyo3) BinanceFeed: same, with next releasing
the GIL (py.detach) while it waits. Both drive the mock-server-tested async
BinanceKlineStream on a single-thread tokio runtime (blocking poll); wickra-data
gains the live-binance feature + tokio in each binding.
Completes F4: the live Binance kline feed is now native in all 9 languages
(WASM excluded), with no third-party WebSocket client in any of them.
35 lines
1.7 KiB
Go
35 lines
1.7 KiB
Go
// Package wickra provides idiomatic Go bindings for the Wickra
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// technical-analysis library over its C ABI hub.
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//
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// Each indicator is an opaque-handle type with a New<Indicator> constructor and
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// Update/Batch/Reset/Close methods. Handles are freed by Close and, as a
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// backstop, by a finalizer; call Close explicitly to release native memory
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// promptly. The binding links against the prebuilt Wickra C ABI library, staged
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// per platform under ./lib/<goos>_<goarch>/, with the C ABI header vendored
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// under ./include. For distribution the libraries are committed alongside the
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// source in the wickra-go module, so `go get` + `go build` works with no extra
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// steps — see the package README.
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package wickra
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/*
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#cgo CFLAGS: -I${SRCDIR}/include
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#cgo linux,amd64 LDFLAGS: -L${SRCDIR}/lib/linux_amd64 -lwickra -Wl,-rpath,${SRCDIR}/lib/linux_amd64
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#cgo linux,arm64 LDFLAGS: -L${SRCDIR}/lib/linux_arm64 -lwickra -Wl,-rpath,${SRCDIR}/lib/linux_arm64
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#cgo darwin,amd64 LDFLAGS: -L${SRCDIR}/lib/darwin_amd64 -lwickra -Wl,-rpath,${SRCDIR}/lib/darwin_amd64
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#cgo darwin,arm64 LDFLAGS: -L${SRCDIR}/lib/darwin_arm64 -lwickra -Wl,-rpath,${SRCDIR}/lib/darwin_arm64
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#cgo windows,amd64 LDFLAGS: -L${SRCDIR}/lib/windows_amd64 -l:wickra.dll
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#cgo windows,arm64 LDFLAGS: -L${SRCDIR}/lib/windows_arm64 -l:wickra.dll
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#include "wickra.h"
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*/
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import "C"
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import "errors"
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// ErrInvalidParams is returned by a New<Indicator> constructor when the native
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// constructor rejects the supplied parameters (for example a zero period).
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var ErrInvalidParams = errors.New("wickra: invalid indicator parameters")
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// ErrFeedClosed is returned by BinanceFeed.Next once the stream has been closed
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// or has errored out and exhausted its reconnect attempts.
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var ErrFeedClosed = errors.New("wickra: binance feed closed")
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