Support build time in module manifests (#71)

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);