Add a stub relational data service while I explore GraphQL

See #63

Cargo.toml

@@ -13,6 +13,7 @@ members = [
     "services/local-orchestrator",
     "services/object-store",
     "services/parser",
+    "services/reldata",
 
     "stdlib/archive",
     "stdlib/dir",

docs/Developing_Services.adoc

@@ -9,7 +9,6 @@ This document captures some details around developing these Otto services.
 |===
 | Port | Service Name | Notes
 
-
 | 7670
 | Dashboard
 | Placeholder for the web dashboard
@@ -27,5 +26,9 @@ This document captures some details around developing these Otto services.
 | Orchestrator
 | Service which can provision environments capable of executing agents.
 
+| 7674
+| Relational Data
+| Service which provides relational data services to clients.
+
 |===
 

services/reldata/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "reldata"
+version = "0.1.0"
+authors = ["R. Tyler Croy <[email protected]>"]
+edition = "2018"
+
+[dependencies]
+async-std = { version = "~1.7", features = ["attributes"]}
+log = "~0.4.11"
+otto-models = { path = "../../crates/models" }
+pretty_env_logger = "~0.4.0"
+tide = "~0.15.0"

services/reldata/README.adoc

@@ -0,0 +1,12 @@
+= Relational Data
+
+The relational data service provides a centralized location for project,
+pipeline, and more data to be stored. This is in contrast to the object store
+which is expected to store large files/objects.
+
+
+.Environnment Variables
+|===
+| Name | Default | Description
+
+|===

services/reldata/src/main.rs

@@ -0,0 +1,30 @@
+/*
+ * The relational data service largely is meant to expose information from an underlying database
+ */
+use tide::Request;
+
+async fn healthcheck(_req: Request<()>) -> tide::Result {
+    Ok(tide::Response::builder(200)
+        .body("{}")
+        .content_type("application/json")
+        .build())
+}
+
+#[async_std::main]
+async fn main() -> std::io::Result<()> {
+    use std::{env, net::TcpListener, os::unix::io::FromRawFd};
+    pretty_env_logger::init();
+
+    let mut app = tide::new();
+    app.at("/health").get(healthcheck);
+
+    if let Some(fd) = env::var("LISTEN_FD").ok().and_then(|fd| fd.parse().ok()) {
+        app.listen(unsafe { TcpListener::from_raw_fd(fd) }).await?;
+    } else {
+        app.listen("http://localhost:7674").await?;
+    }
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {}