cow_app_data/
lib.rs

1//! `cow-app-data` — Layer 2 `CoW` Protocol order app-data metadata schema and hash generation.
2//!
3//! App-data is a `bytes32` field in every `CoW` order that encodes a
4//! `keccak256` hash of a JSON document describing the order's intent,
5//! referral, UTM codes, interaction hooks, and more.
6//!
7//! # Submodules
8//!
9//! | Module | Purpose |
10//! |---|---|
11//! | [`types`] | Rust types matching the JSON schema (v1.14.0) |
12//! | [`hash`] | Deterministic JSON serialisation and `keccak256` hashing |
13//! | [`cid`] | Bidirectional `appDataHex` ↔ IPFS `CIDv1` conversion |
14//! | [`ipfs`] | IPFS fetch/upload helpers and the [`MetadataApi`] facade |
15//! | [`schema`] | Runtime JSON Schema validation against the bundled upstream spec |
16//! | `validation` | Business-rule constraint checks (`appCode` length, `bps` caps, …) |
17//!
18//! # Quick start
19//!
20//! ```rust
21//! use cow_app_data::{AppDataDoc, MetadataApi};
22//!
23//! let api = MetadataApi::new();
24//! let doc = api.generate_app_data_doc("MyApp");
25//! let info = api.get_app_data_info(&doc).unwrap();
26//! println!("appData hex : {}", info.app_data_hex);
27//! println!("CID         : {}", info.cid);
28//! ```
29//!
30//! # Building app-data for an order
31//!
32//! ```rust
33//! use cow_app_data::{Metadata, Quote, build_app_data_doc, build_order_app_data};
34//!
35//! // Simple: just an app code
36//! let hex = build_order_app_data("MyDApp").unwrap();
37//!
38//! // With metadata: slippage, partner fees, hooks, …
39//! let meta = Metadata::default().with_quote(Quote::new(50));
40//! let hex = build_app_data_doc("MyDApp", meta).unwrap();
41//! ```
42
43#![cfg_attr(coverage_nightly, feature(coverage_attribute))]
44#![allow(unexpected_cfgs, reason = "`coverage_nightly` is set only by cargo-llvm-cov")]
45#![deny(unsafe_code)]
46#![warn(missing_docs)]
47
48pub mod cid;
49pub mod hash;
50pub mod ipfs;
51#[cfg(feature = "schema-validation")]
52pub mod schema;
53pub mod types;
54pub(crate) mod validation;
55
56#[allow(
57    deprecated,
58    reason = "re-exporting deprecated legacy function for backwards compatibility"
59)]
60pub use cid::app_data_hex_to_cid_legacy;
61pub use cid::{
62    CidComponents, appdata_hex_to_cid, assert_cid, cid_to_appdata_hex, decode_cid, extract_digest,
63    parse_cid,
64};
65pub use hash::{
66    appdata_hex, appdata_json, build_app_data_doc, build_app_data_doc_full, build_order_app_data,
67    merge_app_data_doc, stringify_deterministic,
68};
69pub use ipfs::{
70    AppDataInfo, DEFAULT_IPFS_READ_URI, DEFAULT_IPFS_WRITE_URI, Ipfs, IpfsUploadResult,
71    MetadataApi, ValidationResult, fetch_doc_from_app_data_hex, fetch_doc_from_cid,
72    get_app_data_info, get_app_data_schema, import_schema, upload_app_data_to_pinata,
73    upload_app_data_to_pinata as pin_json_in_pinata_ipfs, validate_app_data_doc,
74};
75#[allow(
76    deprecated,
77    reason = "re-exporting deprecated legacy functions for backwards compatibility"
78)]
79pub use ipfs::{
80    fetch_doc_from_app_data_hex_legacy, get_app_data_info_legacy,
81    upload_metadata_doc_to_ipfs_legacy,
82};
83#[cfg(feature = "schema-validation")]
84pub use schema::{
85    APP_DATA_SCHEMA, LATEST_VERSION as LATEST_APP_DATA_SCHEMA_VERSION, SchemaError,
86    SchemaViolation, supported_versions as supported_app_data_schema_versions,
87    validate as validate_schema, validate_json as validate_schema_json,
88    validate_json_with as validate_schema_json_with, validate_with as validate_schema_with,
89};
90pub use types::{
91    AppDataDoc, CowHook, LATEST_APP_DATA_VERSION, LATEST_HOOKS_METADATA_VERSION,
92    LATEST_ORDER_CLASS_METADATA_VERSION, LATEST_PARTNER_FEE_METADATA_VERSION,
93    LATEST_QUOTE_METADATA_VERSION, LATEST_REFERRER_METADATA_VERSION,
94    LATEST_REPLACED_ORDER_METADATA_VERSION, LATEST_SIGNER_METADATA_VERSION,
95    LATEST_USER_CONSENTS_METADATA_VERSION, LATEST_UTM_METADATA_VERSION,
96    LATEST_WIDGET_METADATA_VERSION, LATEST_WRAPPERS_METADATA_VERSION, Metadata, OrderClass,
97    OrderClassKind, OrderInteractionHooks, PartnerFee, PartnerFeeEntry, Quote, Referrer,
98    ReplacedOrder, Utm, Widget, get_partner_fee_bps,
99};
100pub use validation::ValidationError;
cow_app_data/lib.rs

cow_app_data/
lib.rs
