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Author SHA1 Message Date
fc96d91c77 random ud 2025-08-20 19:18:46 -04:00
32b1aa7e89 ud 2025-08-11 19:27:34 -04:00
b37f386fe8 ud 2025-06-30 12:11:49 -04:00
83d5d85962 added final macro to auto implement cli from api types 2025-07-18 14:14:07 -04:00
41f85afa6c ud, fixed errors 2025-07-18 13:34:27 -04:00
0ba23fad0e ud 2025-07-17 12:18:58 -04:00
37fa009fdd adding error type capability 2025-07-15 11:09:41 -04:00
3 changed files with 1352 additions and 138 deletions

1203
Cargo.lock generated

File diff suppressed because it is too large Load Diff

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@ -1,5 +1,5 @@
[package]
name = "derive_http"
name = "http_derive"
version = "0.1.0"
edition = "2024"
@ -11,3 +11,4 @@ async-trait = "0.1.88"
proc-macro2 = "1.0.95"
quote = "1.0.40"
syn = { version = "2.0.104", features = ["full"] }
http_core = { path = "../http_core" }

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@ -2,14 +2,15 @@ use proc_macro::TokenStream;
use quote::quote;
use syn::{parse_macro_input, Lit, ItemEnum, DeriveInput, Fields, Data};
use quote::format_ident;
use http_core::{Queryable, ApiDispatch, HasHttp, Keys};
#[proc_macro_derive(HttpRequest, attributes(http_get, http_response))]
#[proc_macro_derive(HttpRequest, attributes(http_response, http_error_type))]
pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as DeriveInput);
let query_name = &input.ident;
let query_name_str = query_name.to_string();
// Parse optional #[http_response = "..."] attribute via parse_nested_meta
// Parse optional #[http_response = "..."] attribute
let mut response_name_opt: Option<String> = None;
for attr in &input.attrs {
if attr.path().is_ident("http_response") {
@ -25,37 +26,26 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
}
}
// Determine response type name
let response_name_str = if let Some(custom_resp) = response_name_opt {
custom_resp
} else if query_name_str == "Q" {
"R".to_string()
} else if query_name_str.ends_with('Q') {
format!("{}R", &query_name_str[..query_name_str.len() - 1])
} else {
panic!("HttpRequest derive macro expects the type name to be 'Q' or end with 'Q', or specify #[http_response = \"...\"] to override");
};
let response_name_str = response_name_opt.unwrap_or_else(|| format!("{}Resp", query_name_str));
let response_name = format_ident!("{}", response_name_str);
// Extract base URL from #[http_get(url = "...")]
let mut base_url = None;
// Parse optional #[http_error_type = "..."] attribute (default to `E`)
let mut error_type = syn::Path::from(syn::Ident::new("E", proc_macro2::Span::call_site()));
for attr in &input.attrs {
if attr.path().is_ident("http_get") {
if attr.path().is_ident("http_error_type") {
attr.parse_nested_meta(|meta| {
if meta.path.is_ident("url") {
if meta.path.is_ident("http_error_type") {
let lit: Lit = meta.value()?.parse()?;
if let Lit::Str(litstr) = lit {
base_url = Some(litstr.value());
error_type = syn::parse_str(&litstr.value()).unwrap();
}
}
Ok(())
}).unwrap_or_else(|e| panic!("Error parsing http_get attribute: {}", e));
}).unwrap_or_else(|e| panic!("Error parsing http_error_type attribute: {}", e));
}
}
let base_url = base_url.expect("Missing #[http_get(url = \"...\")] attribute");
let base_url_lit = syn::LitStr::new(&base_url, proc_macro2::Span::call_site());
// Collect query parameters from fields named "lnk_p_*" (only for structs)
// Collect query parameters from lnk_p_* fields
let query_param_code = if let Data::Struct(data_struct) = &input.data {
if let Fields::Named(fields_named) = &data_struct.fields {
fields_named.named.iter().filter_map(|field| {
@ -64,7 +54,9 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
if field_name.starts_with("lnk_p_") {
let key = &field_name["lnk_p_".len()..];
Some(quote! {
query_params.push((#key.to_string(), self.#ident.to_string()));
if let Some(val) = &self.#ident {
query_params.push((#key.to_string(), val.to_string()));
}
})
} else {
None
@ -84,15 +76,16 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
async fn send(
&self,
base_url: &str,
headers: Option<Vec<(&str, &str)>>,
) -> Result<Self::R, Box<dyn std::error::Error + Send + Sync>> {
) -> Result<Self::R, #error_type> {
use awc::Client;
use urlencoding::encode;
let mut query_params: Vec<(String, String)> = Vec::new();
#(#query_param_code)*
let mut url = #base_url_lit.to_string();
let mut url = base_url.to_string();
if !query_params.is_empty() {
let mut query_string = String::new();
let mut first = true;
@ -118,7 +111,6 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
let response = request.send().await?;
let bytes = response.body().await?;
let parsed: Self::R = serde_json::from_slice(&bytes)?;
Ok(parsed)
}
@ -128,123 +120,163 @@ pub fn derive_http_get_request(input: TokenStream) -> TokenStream {
TokenStream::from(expanded)
}
#[proc_macro_attribute]
pub fn alpaca_cli(_attr: TokenStream, item: TokenStream) -> TokenStream {
let input_enum = parse_macro_input!(item as ItemEnum);
let enum_name = &input_enum.ident;
let variants = &input_enum.variants;
let top_enum_ident = &input_enum.ident;
let top_variants = &input_enum.variants;
// Match arms for regular command variants (Single, Asset, etc.)
let regular_arms = variants.iter().filter_map(|v| {
let v_name = &v.ident;
// Build outer match arms
let match_arms: Vec<_> = top_variants.iter().map(|variant| {
let variant_ident = &variant.ident;
// Skip Bulk variant — we handle it separately
if v_name == "Bulk" {
return None;
}
Some(quote! {
#enum_name::#v_name(req) => {
let res = req.send(client.clone(), &api_key).await?;
let body = res.body().await?;
println!("{}", std::str::from_utf8(&body)?);
// Expecting tuple variants like Alpaca(AlpacaCmd)
let inner_type = match &variant.fields {
Fields::Unnamed(fields) if fields.unnamed.len() == 1 => {
match &fields.unnamed.first().unwrap().ty {
syn::Type::Path(p) => p.path.segments.last().unwrap().ident.clone(),
_ => panic!("Expected tuple variant with a type path"),
}
}
})
});
_ => panic!("Each variant must be a tuple variant like `Alpaca(AlpacaCmd)`"),
};
quote! {
#top_enum_ident::#variant_ident(inner) => {
match inner {
#inner_type::Bulk { input } => {
let mut reader: Box<dyn std::io::Read> = match input {
Some(path) => Box::new(std::fs::File::open(path)?),
None => Box::new(std::io::stdin()),
};
let mut buf = String::new();
reader.read_to_string(&mut buf)?;
let queries: Vec<#inner_type> = serde_json::from_str(&buf)?;
use std::sync::Arc;
let client = Arc::new(awc::Client::default());
let keys = Arc::new(crate::load_api_keys()?);
const THREADS: usize = 4;
let total = queries.len();
let per_thread = std::cmp::max(1, total / THREADS);
let shared_queries = Arc::new(queries);
let mut handles = Vec::new();
for i in 0..THREADS {
let queries = Arc::clone(&shared_queries);
let client = Arc::clone(&client);
let keys = Arc::clone(&keys);
let start = i * per_thread;
let end = if i == THREADS - 1 { total } else { start + per_thread };
let handle = std::thread::spawn(move || {
let rt = tokio::runtime::Runtime::new().unwrap();
for q in &queries[start..end] {
rt.block_on(q.send_all(&client, &keys)).unwrap();
}
});
handles.push(handle);
}
for h in handles {
h.join().expect("Thread panicked");
}
}
other => {
let client = awc::Client::default();
let keys = crate::load_api_keys()?;
other.send_all(&client, &keys).await?;
}
}
}
}
}).collect();
// Generate the final code
let expanded = quote! {
#[derive(structopt::StructOpt, Debug)]
use clap::Parser;
use std::io::Read;
#[derive(clap::Parser, Debug)]
#input_enum
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
use structopt::StructOpt;
use std::fs::File;
use std::io::{BufReader, Read};
use std::sync::Arc;
use std::thread;
const THREADS: usize = 4;
// Initialize shared HTTP client and API key
let client = Arc::new(awc::Client::default());
let api_key = std::env::var("APCA_API_KEY_ID")?;
let cmd = #enum_name::from_args();
let cmd = #top_enum_ident::parse();
match cmd {
#(#regular_arms)*
#enum_name::Bulk { input } => {
// Choose input source: file or stdin
let mut reader: Box<dyn Read> = match input {
Some(path) => Box::new(File::open(path)?),
None => Box::new(std::io::stdin()),
};
// Read input JSON into buffer
let mut buf = String::new();
reader.read_to_string(&mut buf)?;
// Deserialize into Vec<Query>
let queries: Vec<Query> = serde_json::from_str(&buf)?;
let total = queries.len();
if total == 0 {
eprintln!("No queries provided.");
return Ok(());
}
let shared_queries = Arc::new(queries);
let shared_key = Arc::new(api_key);
let per_thread = total / THREADS;
let mut handles = Vec::with_capacity(THREADS);
for i in 0..THREADS {
let queries_clone = Arc::clone(&shared_queries);
let client_clone = Arc::clone(&client);
let key_clone = Arc::clone(&shared_key);
let start_index = i * per_thread;
let end_index = if i == THREADS - 1 {
total // Last thread gets the remainder
} else {
start_index + per_thread
};
let handle = thread::spawn(move || {
let rt = tokio::runtime::Runtime::new().expect("Failed to create runtime");
for idx in start_index..end_index {
let query = &queries_clone[idx];
let send_result = rt.block_on(query.send(client_clone.clone(), &key_clone));
match send_result {
Ok(response) => {
let body_result = rt.block_on(response.body());
match body_result {
Ok(body) => println!("{}", String::from_utf8_lossy(&body)),
Err(e) => eprintln!("Error reading response body: {:?}", e),
}
}
Err(e) => {
eprintln!("Request failed: {:?}", e);
}
}
}
});
handles.push(handle);
}
// Wait for all threads to complete
for handle in handles {
handle.join().expect("A thread panicked");
}
}
#(#match_arms),*
}
Ok(())
}
// Trait for dispatching API calls
pub trait ApiDispatch {
fn send_all(
&self,
client: &awc::Client,
keys: &std::collections::HashMap<String, crate::Keys>,
) -> std::pin::Pin<Box<dyn std::future::Future<Output = Result<(), Box<dyn std::error::Error>>> + Send>>;
}
};
TokenStream::from(expanded)
}
#[proc_macro_attribute]
pub fn api_dispatch(attr: TokenStream, item: TokenStream) -> TokenStream {
let input = parse_macro_input!(item as syn::ItemEnum);
let enum_ident = &input.ident;
// Parse attribute input: input = "MyQuery"
let meta_args = attr.to_string();
let input_type: syn::Ident = {
let cleaned = meta_args.trim().replace("input", "").replace('=', "").replace('"', "").trim().to_string();
syn::Ident::new(&cleaned, proc_macro2::Span::call_site())
};
let expanded = quote! {
#input
impl ApiDispatch for #enum_ident {
fn send_all(
&self,
client: &awc::Client,
keys: &std::collections::HashMap<String, crate::Keys>,
) -> std::pin::Pin<Box<dyn std::future::Future<Output = Result<(), Box<dyn std::error::Error>>> + Send>> {
Box::pin(async move {
match self {
#enum_ident::Single { query } => {
let parsed: #input_type = serde_json::from_str(query)?;
parsed.send(client, keys).await?;
}
#enum_ident::Bulk { input } => {
let json = if let Some(raw) = input {
if std::path::Path::new(&raw).exists() {
std::fs::read_to_string(raw)?
} else {
raw.clone()
}
} else {
use std::io::Read;
let mut buf = String::new();
std::io::stdin().read_to_string(&mut buf)?;
buf
};
let items: Vec<#input_type> = serde_json::from_str(&json)?;
for item in items {
item.send(client, keys).await?;
}
}
}
Ok(())
})
}
}
};
TokenStream::from(expanded)