Added basic metadata struct to Spec

Signed-off-by: Aleksei Rusev <hou.alexx@gmail.com>

.gitignore

@@ -35,4 +35,4 @@ dist/
 # GENERATED FOR spdev:Rust
 target/
 # END spdev:Rust
-.devcontainer/
+.devcontainer/

src/api/meta.rs

@@ -0,0 +1,24 @@
+// Copyright (c) 2021 Sony Pictures Imageworks, et al.
+// SPDX-License-Identifier: Apache-2.0
+// https://github.com/imageworks/spk
+
+use pyo3::prelude::*;
+use serde::{Deserialize, Serialize};
+use std::collections::BTreeMap;
+
+#[cfg(test)]
+#[path = "./meta_test.rs"]
+mod meta_test;
+
+#[pyclass]
+#[derive(Debug, Hash, Default, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct Meta {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub description: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub homepage: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub license: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub labels: Option<BTreeMap<String, String>>,
+}

src/api/meta_test.rs

@@ -0,0 +1,37 @@
+// Copyright (c) 2021 Sony Pictures Imageworks, et al.
+// SPDX-License-Identifier: Apache-2.0
+// https://github.com/imageworks/spk
+
+use rstest::rstest;
+
+#[rstest]
+fn test_package_meta_absent() {
+    let spec: serde_yaml::Result<crate::api::Spec> = serde_yaml::from_str(
+        r#"{
+        pkg: meta/1.0.0
+    }"#,
+    );
+    assert!(spec.is_ok());
+    assert!(spec.unwrap().meta.is_none())
+}
+
+#[rstest]
+fn test_package_meta_basic() {
+    let spec: serde_yaml::Result<crate::api::Spec> = serde_yaml::from_str(
+        r#"
+        pkg: meta/1.0.0
+        meta:
+            description: package description
+            license: MIT
+            labels:
+                department: fx
+    "#,
+    );
+    assert!(spec.is_ok());
+    let spec = spec.unwrap();
+    assert!(spec.meta.is_some());
+    let meta = spec.meta.unwrap();
+    assert!(meta.description.is_some());
+    assert!(meta.homepage.is_none());
+    assert!(meta.labels.unwrap().contains_key("department"));
+}

src/api/mod.rs

@@ -7,6 +7,7 @@ mod build_spec;
 mod compat;
 mod ident;
 mod install_spec;
+mod meta;
 mod name;
 mod option;
 mod option_map;
@@ -23,6 +24,7 @@ pub use build_spec::BuildSpec;
 pub use compat::{parse_compat, Compat, CompatRule, CompatRuleSet, Compatibility};
 pub use ident::{parse_ident, Ident};
 pub use install_spec::InstallSpec;
+pub use meta::Meta;
 pub use name::{validate_name, validate_tag_name, InvalidNameError};
 pub use option::{Inheritance, Opt, PkgOpt, VarOpt};
 pub use option_map::{host_options, OptionMap};

src/api/spec.rs

@@ -9,7 +9,7 @@ use serde::{Deserialize, Serialize};
 
 use super::{
     request::is_false, Build, BuildSpec, Compat, Compatibility, Ident, Inheritance, InstallSpec,
-    Opt, OptionMap, PkgRequest, Request, SourceSpec, TestSpec, VarRequest,
+    Meta, Opt, OptionMap, PkgRequest, Request, SourceSpec, TestSpec, VarRequest,
 };
 use crate::{Error, Result};
 
@@ -34,6 +34,9 @@ pub struct Spec {
     #[serde(default)]
     pub pkg: Ident,
     #[pyo3(get, set)]
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub meta: Option<Meta>,
+    #[pyo3(get, set)]
     #[serde(default, skip_serializing_if = "Compat::is_default")]
     pub compat: Compat,
     #[pyo3(get, set)]
@@ -237,6 +240,8 @@ impl<'de> Deserialize<'de> for Spec {
             #[serde(default)]
             pkg: Ident,
             #[serde(default)]
+            meta: Option<Meta>,
+            #[serde(default)]
             compat: Compat,
             #[serde(default)]
             deprecated: bool,
@@ -262,6 +267,7 @@ impl<'de> Deserialize<'de> for Spec {
 
         Ok(Spec {
             pkg: unchecked.pkg,
+            meta: unchecked.meta,
             compat: unchecked.compat,
             deprecated: unchecked.deprecated,
             sources: unchecked