feat: add post-compute module

Cargo.toml

@@ -1,3 +1,5 @@
 [workspace]
 resolver = "3"
-members = ["add"]
+members = [
+    "post-compute"
+]

post-compute/Cargo.toml

@@ -0,0 +1,37 @@
+[package]
+name = "tee-worker-post-compute"
+version = "0.1.0"
+edition = "2024"
+
+[[bin]]
+name = "tee-worker-post-compute"
+path = "src/bin/tee_worker_post_compute.rs"
+
+[dependencies]
+aes = "0.8.4"
+alloy-signer = "0.15.9"
+alloy-signer-local = "0.15.9"
+cbc = { version = "0.1.2", features = ["alloc"] }
+env_logger = "0.11.8"
+base64 = "0.22.1"
+log = "0.4.27"
+rand = "0.8.5"
+rsa = "0.9.8"
+reqwest = { version = "0.12.15", features = ["blocking", "json"] }
+serde = "1.0.219"
+serde_json = "1.0.140"
+sha256 = "1.6.0"
+sha3 = "0.10.8"
+thiserror = "2.0.12"
+walkdir = "2.5.0"
+zip = "4.0.0"
+
+[dev-dependencies]
+logtest = "2.0.0"
+mockall = "0.13.1"
+once_cell = "1.21.3"
+serial_test = "3.2.0"
+temp-env = "0.3.6"
+tempfile = "3.20.0"
+tokio = "1.45.0"
+wiremock = "0.6.3"

post-compute/src/api.rs

@@ -0,0 +1,2 @@
+pub mod result_proxy_api_client;
+pub mod worker_api;

post-compute/src/api/result_proxy_api_client.rs

@@ -0,0 +1,318 @@
+use reqwest::blocking::Client;
+use serde::{Deserialize, Serialize};
+
+const EMPTY_HEX_STRING_32: &str =
+    "0x0000000000000000000000000000000000000000000000000000000000000000";
+const EMPTY_WEB3_SIG: &str = "0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000";
+
+/// Represents a computation result that can be uploaded to IPFS via the iExec result proxy.
+///
+/// This struct encapsulates all the necessary information about a completed computation task
+/// that needs to be stored permanently on IPFS. It includes task identification, metadata,
+/// the actual result data, and cryptographic proofs of computation integrity.
+///
+/// The struct is designed to be serialized to JSON for transmission to the result proxy API,
+/// with field names automatically converted to camelCase to match the expected API format.
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct ResultModel {
+    /// Unique identifier of the task on the blockchain
+    pub chain_task_id: String,
+    /// Unique identifier of the deal this task belongs to
+    pub deal_id: String,
+    /// Index of the task within the deal
+    pub task_index: u32,
+    /// Compressed result data as a byte array
+    pub zip: Vec<u8>,
+    /// Cryptographic hash of the computation result
+    pub determinist_hash: String,
+    /// TEE (Trusted Execution Environment) signature proving integrity
+    pub enclave_signature: String,
+}
+
+impl Default for ResultModel {
+    fn default() -> Self {
+        Self {
+            chain_task_id: EMPTY_HEX_STRING_32.to_string(),
+            deal_id: EMPTY_HEX_STRING_32.to_string(),
+            task_index: 0,
+            zip: vec![],
+            determinist_hash: String::new(),
+            enclave_signature: EMPTY_WEB3_SIG.to_string(),
+        }
+    }
+}
+
+pub struct ResultProxyApiClient {
+    base_url: String,
+    client: Client,
+}
+
+impl ResultProxyApiClient {
+    /// Creates a new HTTP client for interacting with the iExec result proxy API.
+    ///
+    /// This function initializes a client with the provided base URL. The client can then be used
+    /// to upload computation results to IPFS via the result proxy service.
+    ///
+    /// # Arguments
+    ///
+    /// * `base_url` - The base URL of the result proxy service (e.g., "<https://result.v8-bellecour.iex.ec>")
+    ///
+    /// # Returns
+    ///
+    /// A new `ResultProxyApiClient` instance configured with the provided base URL.
+    ///
+    /// # Example
+    ///
+    /// ```rust
+    /// use tee_worker_post_compute::api::result_proxy_api_client::ResultProxyApiClient;
+    ///
+    /// let client = ResultProxyApiClient::new("https://result.v8-bellecour.iex.ec");
+    /// ```
+    pub fn new(base_url: &str) -> Self {
+        Self {
+            base_url: base_url.to_string(),
+            client: Client::new(),
+        }
+    }
+
+    /// Uploads a computation result to IPFS via the result proxy service.
+    ///
+    /// This method sends a POST request to the result proxy's `/v1/results` endpoint with
+    /// the provided result model. The result proxy validates the data, uploads it to IPFS,
+    /// and returns the IPFS link for permanent storage.
+    ///
+    /// The upload process involves several steps handled by the result proxy:
+    /// 1. Authentication and authorization validation
+    /// 2. Result data validation (signatures, hashes, etc.)
+    /// 3. IPFS upload and pinning
+    /// 4. Registration of the result link on the blockchain
+    ///
+    /// # Arguments
+    ///
+    /// * `authorization` - The bearer token for authenticating with the result proxy
+    /// * `result_model` - The [`ResultModel`] containing the computation result to upload
+    ///
+    /// # Returns
+    ///
+    /// * `Ok(String)` - The IPFS link where the result was uploaded (e.g., "ipfs://QmHash...")
+    /// * `Err(reqwest::Error)` - HTTP client error or server-side error
+    ///
+    /// # Errors
+    ///
+    /// This function will return an error in the following situations:
+    /// * Network connectivity issues preventing the HTTP request
+    /// * Authentication failures (invalid or expired token)
+    /// * Server-side validation failures (invalid signatures, malformed data)
+    /// * IPFS upload failures on the result proxy side
+    /// * HTTP status codes indicating server errors (4xx, 5xx)
+    ///
+    /// # Example
+    ///
+    /// ```rust
+    /// use tee_worker_post_compute::api::result_proxy_api_client::{
+    ///     ResultProxyApiClient,
+    ///     ResultModel,
+    /// };
+    ///
+    /// let client = ResultProxyApiClient::new("https://result-proxy.iex.ec");
+    /// let result_model = ResultModel {
+    ///     chain_task_id: "0x123...".to_string(),
+    ///     zip: vec![0xde, 0xad, 0xbe, 0xef],
+    ///     determinist_hash: "0xabc".to_string(),
+    ///     enclave_signature: "0xdef".to_string(),
+    ///     ..Default::default()
+    /// };
+    ///
+    /// match client.upload_to_ipfs("Bearer token123", &result_model) {
+    ///     Ok(ipfs_link) => {
+    ///         println!("Successfully uploaded to: {}", ipfs_link);
+    ///         // IPFS link can be used to retrieve the result later
+    ///     }
+    ///     Err(e) => {
+    ///         eprintln!("Upload failed: {}", e);
+    ///         // Handle error appropriately (retry, report, etc.)
+    ///     }
+    /// }
+    /// ```
+    pub fn upload_to_ipfs(
+        &self,
+        authorization: &str,
+        result_model: &ResultModel,
+    ) -> Result<String, reqwest::Error> {
+        let url = format!("{}/v1/results", self.base_url);
+        let response = self
+            .client
+            .post(&url)
+            .header("Authorization", authorization)
+            .json(result_model)
+            .send()?;
+
+        if response.status().is_success() {
+            response.text()
+        } else {
+            Err(response.error_for_status().unwrap_err())
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use serde_json::json;
+    use wiremock::{
+        Mock, MockServer, ResponseTemplate,
+        matchers::{body_json, header, method, path},
+    };
+
+    // Test constants
+    const TEST_TASK_ID: &str = "0x123";
+    const TEST_DEAL_ID: &str = "0x456";
+    const TEST_DETERMINIST_HASH: &str = "0xabc";
+    const TEST_ENCLAVE_SIGNATURE: &str = "0xdef";
+    const TEST_IPFS_LINK: &str = "ipfs://QmHash123";
+    const TEST_TOKEN: &str = "test-token";
+
+    // region ResultModel
+    #[test]
+    fn result_model_default_returns_correct_values_when_created() {
+        let model = ResultModel::default();
+        assert_eq!(model.chain_task_id, EMPTY_HEX_STRING_32);
+        assert_eq!(model.deal_id, EMPTY_HEX_STRING_32);
+        assert_eq!(model.task_index, 0);
+        assert!(model.zip.is_empty());
+        assert_eq!(model.determinist_hash, "");
+        assert_eq!(model.enclave_signature, EMPTY_WEB3_SIG);
+    }
+
+    #[test]
+    fn result_model_serializes_to_camel_case_when_converted_to_json() {
+        let model = ResultModel {
+            chain_task_id: TEST_TASK_ID.to_string(),
+            deal_id: TEST_DEAL_ID.to_string(),
+            task_index: 5,
+            zip: vec![1, 2, 3],
+            determinist_hash: TEST_DETERMINIST_HASH.to_string(),
+            enclave_signature: TEST_ENCLAVE_SIGNATURE.to_string(),
+        };
+
+        let expected = json!({
+            "chainTaskId": TEST_TASK_ID,
+            "dealId": TEST_DEAL_ID,
+            "taskIndex": 5,
+            "zip": [1, 2, 3],
+            "deterministHash": TEST_DETERMINIST_HASH,
+            "enclaveSignature": TEST_ENCLAVE_SIGNATURE
+        });
+
+        let v = serde_json::to_value(model).unwrap();
+        assert_eq!(v, expected);
+    }
+
+    #[test]
+    fn result_model_deserializes_from_camel_case_when_parsing_json() {
+        let value = json!({
+            "chainTaskId": TEST_TASK_ID,
+            "dealId": TEST_DEAL_ID,
+            "taskIndex": 5,
+            "zip": [1, 2, 3],
+            "deterministHash": TEST_DETERMINIST_HASH,
+            "enclaveSignature": TEST_ENCLAVE_SIGNATURE
+        });
+
+        let model: ResultModel = serde_json::from_value(value).unwrap();
+
+        assert_eq!(model.chain_task_id, TEST_TASK_ID);
+        assert_eq!(model.deal_id, TEST_DEAL_ID);
+        assert_eq!(model.task_index, 5);
+        assert_eq!(model.zip, vec![1, 2, 3]);
+        assert_eq!(model.determinist_hash, TEST_DETERMINIST_HASH);
+        assert_eq!(model.enclave_signature, TEST_ENCLAVE_SIGNATURE);
+    }
+    //endregion
+
+    // region ResultProxyApiClient
+    #[test]
+    fn result_proxy_api_client_new_creates_client_when_given_base_url() {
+        let base_url = "http://localhost:8080";
+        let client = ResultProxyApiClient::new(base_url);
+        assert_eq!(client.base_url, base_url);
+    }
+
+    #[tokio::test]
+    async fn upload_to_ipfs_returns_ipfs_link_when_server_responds_successfully() {
+        let zip_content = b"test content";
+
+        let expected_model = ResultModel {
+            chain_task_id: TEST_TASK_ID.to_string(),
+            determinist_hash: TEST_DETERMINIST_HASH.to_string(),
+            enclave_signature: TEST_ENCLAVE_SIGNATURE.to_string(),
+            zip: zip_content.to_vec(),
+            ..Default::default()
+        };
+
+        let mock_server = MockServer::start().await;
+        let json = serde_json::to_value(&expected_model).unwrap();
+        Mock::given(method("POST"))
+            .and(path("/v1/results"))
+            .and(header("Authorization", TEST_TOKEN))
+            .and(body_json(json))
+            .respond_with(ResponseTemplate::new(200).set_body_string(TEST_IPFS_LINK))
+            .mount(&mock_server)
+            .await;
+
+        let result = tokio::task::spawn_blocking(move || {
+            let client = ResultProxyApiClient::new(&mock_server.uri());
+            client.upload_to_ipfs(TEST_TOKEN, &expected_model)
+        })
+        .await
+        .expect("Task panicked");
+
+        assert!(result.is_ok());
+        assert_eq!(result.unwrap(), TEST_IPFS_LINK);
+    }
+
+    #[tokio::test]
+    async fn upload_to_ipfs_returns_error_for_all_error_codes() {
+        let test_cases = vec![
+            (400, "400", "Bad Request"),
+            (401, "401", "Unauthorized"),
+            (403, "403", "Forbidden"),
+            (404, "404", "Not Found"),
+            (500, "500", "Internal Server Error"),
+            (502, "502", "Bad Gateway"),
+            (503, "503", "Service Unavailable"),
+        ];
+
+        for (status_code, expected_error_contains, description) in test_cases {
+            let mock_server = MockServer::start().await;
+            Mock::given(method("POST"))
+                .and(path("/v1/results"))
+                .respond_with(
+                    ResponseTemplate::new(status_code)
+                        .set_body_string(format!("{status_code} Error")),
+                )
+                .mount(&mock_server)
+                .await;
+
+            let result = tokio::task::spawn_blocking(move || {
+                let client = ResultProxyApiClient::new(&mock_server.uri());
+                let model = ResultModel::default();
+                client.upload_to_ipfs(TEST_TOKEN, &model)
+            })
+            .await
+            .expect("Task panicked");
+
+            assert!(
+                result.is_err(),
+                "Expected error for status code {status_code} ({description})"
+            );
+            let error = result.unwrap_err();
+            assert!(
+                error.to_string().contains(expected_error_contains),
+                "Error message should contain '{expected_error_contains}' for status code {status_code} ({description}), but got: {error}"
+            );
+        }
+    }
+    // endregion
+}