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Merged
amitu merged 11 commits into from
Sep 17, 2025
Merged

feat: create fastn-context crate with hierarchical context system for debugging and operations #2203

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e937a11
feat: create fastn-context crate with hierarchical context system for…
amitu Sep 16, 2025
d30b3d5
implement: basic fastn-context functionality with hierarchical cancel…
amitu Sep 16, 2025
4c1dff1
implement: complete working fastn-context with main macro and async s…
amitu Sep 16, 2025
1a0576c
feat: add basic status display functionality to fastn-context
amitu Sep 16, 2025
aaf5915
fix: remove unused extern crate to pass clippy checks
amitu Sep 16, 2025
db4d9e9
cargo fmt
amitu Sep 16, 2025
47a3597
refactor: organize fastn-context into focused modules for maintainabi…
amitu Sep 16, 2025
ac2f473
feat: implement complete context persistence system for distributed t…
amitu Sep 17, 2025
0c4ed2e
fix: implement proper CancellationToken pattern for tokio::select! usage
amitu Sep 17, 2025
c362107
feat: implement proper context persistence using ContextStatus instea…
amitu Sep 17, 2025
578b598
docs: add automatic request tracking design to NEXT-metrics-and-data.md
amitu Sep 17, 2025
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18 changes: 18 additions & 0 deletions Cargo.lock
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4 changes: 4 additions & 0 deletions Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,8 @@ members = [
"clift",
"fastn",
"fastn-builtins",
"fastn-context",
"fastn-context-macros",
"fastn-core",
"fastn-daemon",
"fastn-ds",
Expand Down Expand Up @@ -89,6 +91,7 @@ enum-iterator = "0.6"
enum-iterator-derive = "0.6"
env_logger = "0.11"
fastn-builtins.path = "fastn-builtins"
fastn-context.path = "fastn-context"
fastn-core.path = "fastn-core"
fastn-ds.path = "fastn-ds"
fastn-daemon.path = "fastn-daemon"
Expand Down Expand Up @@ -139,6 +142,7 @@ snafu = "0.8"
thiserror = "2"
tokio = { version = "1", features = ["full"] }
tokio-postgres = { version = "0.7", features = ["with-serde_json-1", "with-uuid-1"] }
tokio-util = "0.7"
tracing = "0.1"
url = "2"
walkdir = "2"
Expand Down
18 changes: 18 additions & 0 deletions fastn-context-macros/Cargo.toml
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@@ -0,0 +1,18 @@
[package]
name = "fastn-context-macros"
version = "0.1.0"
authors.workspace = true
edition.workspace = true
description.workspace = true
license.workspace = true
repository.workspace = true
homepage.workspace = true
rust-version.workspace = true

[lib]
proc-macro = true

[dependencies]
proc-macro2 = "1"
quote = "1"
syn = { version = "2", features = ["full", "extra-traits"] }
35 changes: 35 additions & 0 deletions fastn-context-macros/src/lib.rs
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@@ -0,0 +1,35 @@
use proc_macro::TokenStream;
use quote::quote;
use syn::{ItemFn, parse_macro_input};

/// Main function attribute macro for fastn applications with context support
#[proc_macro_attribute]
pub fn main(_args: TokenStream, input: TokenStream) -> TokenStream {
let input_fn = parse_macro_input!(input as ItemFn);

let user_fn_name = syn::Ident::new("__fastn_user_main", proc_macro2::Span::call_site());
let fn_block = &input_fn.block;
let fn_attrs = &input_fn.attrs;
let fn_vis = &input_fn.vis;

quote! {
#(#fn_attrs)*
#fn_vis fn main() -> std::result::Result<(), Box<dyn std::error::Error>> {
// Initialize tokio runtime
tokio::runtime::Builder::new_multi_thread()
.enable_all()
.build()?
.block_on(async {
// Global context automatically created

// Call user's main function
let result = #user_fn_name().await;

result
})
}

async fn #user_fn_name() -> std::result::Result<(), Box<dyn std::error::Error>> #fn_block
}
.into()
}
15 changes: 15 additions & 0 deletions fastn-context/Cargo.toml
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@@ -0,0 +1,15 @@
[package]
name = "fastn-context"
version = "0.1.0"
authors.workspace = true
edition.workspace = true
description.workspace = true
license.workspace = true
repository.workspace = true
homepage.workspace = true
rust-version.workspace = true

[dependencies]
tokio.workspace = true
tokio-util.workspace = true
fastn-context-macros = { path = "../fastn-context-macros" }
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