Replaces MongoDB support with PostgreSQL (#151)

- All schemas have been rewritten to a relational model
- All services have been rewritten to accommodate the new data model
- Adds idempotency keys to core endpoints allowing you to retry requests with no additional side effects
- Adds staged jobs to avoid putting jobs in the queue when transactions abort
- Adds atomic transactions to all methods with access to the data layer

Co-authored-by: Oliver Windall Juhl <oliver@mrbltech.com>

packages/medusa/src/utils/countries.js

@@ -270,7 +270,6 @@ export const countries = [
   { alpha2: "PR", name: "Puerto Rico", alpha3: "PRI", numeric: "630" },
   { alpha2: "QA", name: "Qatar", alpha3: "QAT", numeric: "634" },
   { alpha2: "RE", name: "Reunion", alpha3: "REU", numeric: "638" },
-  { alpha2: "RO", name: "Romania", alpha3: "ROU", numeric: "642" },
   { alpha2: "RO", name: "Romania", alpha3: "ROM", numeric: "642" },
   { alpha2: "RU", name: "Russian Federation", alpha3: "RUS", numeric: "643" },
   { alpha2: "RW", name: "Rwanda", alpha3: "RWA", numeric: "646" },

packages/medusa/src/utils/naming-strategy.ts

@@ -0,0 +1,13 @@
+import { DefaultNamingStrategy } from "typeorm"
+
+export class ShortenedNamingStrategy extends DefaultNamingStrategy {
+  eagerJoinRelationAlias(alias: string, propertyPath: string): string {
+    const path = propertyPath
+      .split(".")
+      .map(p => p.substring(0, 2))
+      .join("_")
+    let out = alias + "_" + path
+    let match = out.match(/_/g) || []
+    return out + match.length
+  }
+}