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refact: wasm compatibility #18

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9b5b4cb
refact: wasm compatibility
schronck Feb 3, 2026
93e686f
refact: unified dependencies
schronck Feb 11, 2026
207c909
fix: make batch work on WASM
schronck Feb 11, 2026
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98 changes: 64 additions & 34 deletions Cargo.lock
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25 changes: 17 additions & 8 deletions Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -8,25 +8,34 @@ autoexamples = false
uninlined_format_args = "allow"

[dependencies]
ledger = { git = "ssh://git@github.com/DLC-link/canton-lib", tag = "v0.2.0" }
keycloak = { git = "ssh://git@github.com/DLC-link/canton-lib", tag = "v0.2.0" }
registry = { git = "ssh://git@github.com/DLC-link/canton-lib", tag = "v0.2.0" }
common = { git = "ssh://git@github.com/DLC-link/canton-lib", tag = "v0.2.0" }
tokio = { version = "1.48.0", features = ["macros", "rt-multi-thread"] }
# Canton-lib dependencies (WASM-compatible after refactoring)
ledger = { git = "ssh://git@github.com/DLC-link/canton-lib", branch = "refact/wasm" }
keycloak = { git = "ssh://git@github.com/DLC-link/canton-lib", branch = "refact/wasm" }
registry = { git = "ssh://git@github.com/DLC-link/canton-lib", branch = "refact/wasm" }
common = { git = "ssh://git@github.com/DLC-link/canton-lib", branch = "refact/wasm" }

# Core dependencies (WASM-compatible)
serde_json = "1"
chrono = "0.4.42"
uuid = { version = "1.18", features = ["v4"] }
csv = "1.3"
serde = { version = "1.0", features = ["derive"] }
futures = "0.3"
dotenvy = "0.15"
base64 = "0.22"
log = "0.4"
canton-api-client = "3.3.0-0.1.0"
reqwest = { version = "0.12.24", features = ["json"] }
uuid = { version = "1.18", features = ["v4", "js"] }
csv = "1.3"

# Platform-specific dependencies
[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
tokio = { version = "1.48.0", features = ["macros", "rt-multi-thread"] }

[target.'cfg(target_arch = "wasm32")'.dependencies]
tokio = { version = "1.48.0", features = ["macros", "rt"] }

[dev-dependencies]
env_logger = "0.11"
dotenvy = "0.15"

[[example]]
name = "accept_transfers"
Expand Down
5 changes: 4 additions & 1 deletion examples/batch_distribute.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,9 @@ async fn main() -> Result<(), String> {
));
}

let csv_content = std::fs::read_to_string(&csv_path)
.map_err(|e| format!("Failed to read CSV file '{}': {}", csv_path, e))?;

println!("📦 Batch Distribution");
println!("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
println!("CSV File: {}", csv_path);
Expand All @@ -35,7 +38,7 @@ async fn main() -> Result<(), String> {
env::var("DECENTRALIZED_PARTY_ID").expect("DECENTRALIZED_PARTY_ID must be set");

let batch_params = cbtc::batch::Params {
csv_path: csv_path.clone(),
csv_content,
sender: sender_party.clone(),
instrument_id: common::transfer::InstrumentId {
admin: decentralized_party.clone(),
Expand Down
22 changes: 6 additions & 16 deletions src/batch.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@ struct CsvRecord {
}

pub struct Params {
pub csv_path: String,
pub csv_content: String,
pub sender: String,
pub instrument_id: common::transfer::InstrumentId,
pub ledger_host: String,
Expand All @@ -34,10 +34,9 @@ pub struct Params {
/// Each transfer uses the change from the previous transfer, eliminating the
/// need for pre-splitting UTXOs.
pub async fn submit_from_csv(params: Params) -> Result<(), String> {
// Read CSV file
log::debug!("Reading CSV from: {}", params.csv_path);
let mut reader = csv::Reader::from_path(&params.csv_path)
.map_err(|e| format!("Failed to read CSV file: {}", e))?;
// Parse CSV content
log::debug!("Parsing CSV content ({} bytes)", params.csv_content.len());
let mut reader = csv::Reader::from_reader(params.csv_content.as_bytes());

let mut recipients = Vec::new();
let mut total_amount = 0.0;
Expand Down Expand Up @@ -112,7 +111,7 @@ mod tests {
use super::*;
use keycloak::login::password_url;
use std::env;
use std::io::Write;


#[tokio::test]
async fn test_batch_from_csv() {
Expand All @@ -121,7 +120,6 @@ mod tests {
let receiver =
env::var("LIB_TEST_RECEIVER_PARTY_ID").expect("LIB_TEST_RECEIVER_PARTY_ID must be set");

// Create a temporary CSV file
let csv_content = format!(
"receiver,amount\n\
{receiver},0.0001\n\
Expand All @@ -130,14 +128,9 @@ mod tests {
{receiver},0.001\n"
);

let temp_path = "/tmp/test_batch_distribution.csv";
let mut file = std::fs::File::create(temp_path).expect("Failed to create temp CSV file");
file.write_all(csv_content.as_bytes())
.expect("Failed to write CSV content");

// Run batch distribution (authentication handled internally)
let batch_params = Params {
csv_path: temp_path.to_string(),
csv_content,
sender: env::var("PARTY_ID").expect("PARTY_ID must be set"),
instrument_id: common::transfer::InstrumentId {
admin: common::consts::DEVNET_DECENTRALIZED_PARTY_ID.to_string(),
Expand All @@ -161,8 +154,5 @@ mod tests {
};

submit_from_csv(batch_params).await.unwrap();

// Clean up
std::fs::remove_file(temp_path).ok();
}
}
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