gRPC Support (#20)

src-tauri/grpc/src/lib.rs

@@ -0,0 +1,40 @@
+use prost_reflect::{DynamicMessage, SerializeOptions};
+use serde::{Deserialize, Serialize};
+
+mod codec;
+mod json_schema;
+pub mod manager;
+mod proto;
+
+pub fn serialize_options() -> SerializeOptions {
+    SerializeOptions::new().skip_default_fields(false)
+}
+
+#[derive(Serialize, Deserialize, Debug, Default)]
+#[serde(default, rename_all = "camelCase")]
+pub struct ServiceDefinition {
+    pub name: String,
+    pub methods: Vec<MethodDefinition>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Default)]
+#[serde(default, rename_all = "camelCase")]
+pub struct MethodDefinition {
+    pub name: String,
+    pub schema: String,
+    pub client_streaming: bool,
+    pub server_streaming: bool,
+}
+
+static SERIALIZE_OPTIONS: &'static SerializeOptions = &SerializeOptions::new()
+    .skip_default_fields(false)
+    .stringify_64_bit_integers(false);
+
+pub fn serialize_message(msg: &DynamicMessage) -> Result<String, String> {
+    let mut buf = Vec::new();
+    let mut se = serde_json::Serializer::pretty(&mut buf);
+    msg.serialize_with_options(&mut se, SERIALIZE_OPTIONS)
+        .map_err(|e| e.to_string())?;
+    let s = String::from_utf8(buf).expect("serde_json to emit valid utf8");
+    Ok(s)
+}