Support build time in module manifests (#71)

Cargo.lock

@@ -711,6 +711,7 @@ name = "fce-module-info-parser"
 version = "0.1.0"
 dependencies = [
  "anyhow",
+ "chrono",
  "fluence-sdk-main 0.5.0",
  "semver 0.11.0",
  "serde",
@@ -1148,7 +1149,7 @@ checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
 dependencies = [
  "cfg-if 1.0.0",
  "libc",
- "wasi 0.10.2+wasi-snapshot-preview1",
+ "wasi 0.10.0+wasi-snapshot-preview1",
 ]
 
 [[package]]
@@ -2715,11 +2716,12 @@ dependencies = [
 
 [[package]]
 name = "time"
-version = "0.1.43"
+version = "0.1.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
+checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
 dependencies = [
  "libc",
+ "wasi 0.10.0+wasi-snapshot-preview1",
  "winapi 0.3.9",
 ]
 
@@ -3096,9 +3098,9 @@ checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
 [[package]]
 name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.10.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
 
 [[package]]
 name = "wasm-bindgen"

crates/module-info-parser/Cargo.toml

@@ -16,6 +16,7 @@ fluence-sdk-main = "0.5.0"
 wasmer-core = { package = "wasmer-runtime-core-fl", version = "0.17.0" }
 
 anyhow = "1.0.31"
+chrono = "0.4.19"
 walrus = "0.18.0"
 semver = "0.11.0"
 

crates/module-info-parser/src/manifest/errors.rs

@@ -47,4 +47,8 @@ pub enum ManifestError {
     /// Manifest contains some trailing characters.
     #[error("embedded manifest is corrupted: there are some trailing characters")]
     ManifestRemainderNotEmpty,
+
+    /// Error occurred while parsing embedded build time.
+    #[error("build time can't be parsed: {0}")]
+    DateTimeParseError(#[from] chrono::ParseError),
 }

crates/module-info-parser/src/manifest/module_manifest.rs

@@ -21,6 +21,7 @@ pub struct ModuleManifest {
     pub version: semver::Version,
     pub description: String,
     pub repository: String,
+    pub build_time: chrono::DateTime<chrono::FixedOffset>,
 }
 
 use super::ManifestError;
@@ -39,16 +40,20 @@ impl TryFrom<&[u8]> for ModuleManifest {
         let (version, next_offset) = try_extract_field_as_version(value, next_offset, "version")?;
         let (description, next_offset) = try_extract_field_as_string(value, next_offset, "description")?;
         let (repository, next_offset) = try_extract_field_as_string(value, next_offset, "repository")?;
+        let (build_time, next_offset) = try_extract_field_as_string(value, next_offset, "build time")?;
 
         if next_offset != value.len() {
             return Err(ManifestError::ManifestRemainderNotEmpty)
         }
 
+        let build_time = chrono::DateTime::parse_from_rfc3339(&build_time)?;
+
         let manifest = ModuleManifest {
             authors,
             version,
             description,
             repository,
+            build_time
         };
 
         Ok(manifest)
@@ -140,6 +145,7 @@ impl fmt::Display for ModuleManifest {
         writeln!(f, "authors:     {}", self.authors)?;
         writeln!(f, "version:     {}", self.version)?;
         writeln!(f, "description: {}", self.description)?;
-        write!(f, "repository:  {}", self.repository)
+        writeln!(f, "repository:  {}", self.repository)?;
+        write!(f, "build time:  {} UTC", self.build_time)
     }
 }

crates/module-info-parser/src/manifest/tests.rs

@@ -71,6 +71,7 @@ fn test_reading_simple_config() {
     let version = semver::Version::from_str("0.1.0").unwrap();
     let description = "description".to_string();
     let repository = "repository".to_string();
+    let build_time = chrono::Utc::now();
 
     let mut array = ByteEncoder::new();
 
@@ -78,6 +79,7 @@ fn test_reading_simple_config() {
     array.add_utf8_field(&version.to_string());
     array.add_utf8_field(&description);
     array.add_utf8_field(&repository);
+    array.add_utf8_field(&build_time.to_rfc3339());
 
     let actual: ModuleManifest = array
         .as_bytes()
@@ -89,6 +91,7 @@ fn test_reading_simple_config() {
         version,
         description,
         repository,
+        build_time: build_time.into(),
     };
 
     assert_eq!(actual, expected);