feat(modules-sdk): Remote Query (#4463)

* feat: Remote Query

packages/orchestration/src/__tests__/joiner/graphql-ast.ts

@@ -19,7 +19,7 @@ describe("RemoteJoiner.parseQuery", () => {
     const rjQuery = parser.parseQuery()
 
     expect(rjQuery).toEqual({
-      service: "order",
+      alias: "order",
       fields: ["id", "number", "date"],
       expands: [],
     })
@@ -50,7 +50,7 @@ describe("RemoteJoiner.parseQuery", () => {
     const rjQuery = parser.parseQuery()
 
     expect(rjQuery).toEqual({
-      service: "order",
+      alias: "order",
       fields: ["id", "number", "date"],
       expands: [],
       args: [
@@ -77,6 +77,44 @@ describe("RemoteJoiner.parseQuery", () => {
     })
   })
 
+  it("Simple query with mapping fields to services", async () => {
+    const graphqlQuery = `
+      query {
+          order {
+              id
+              number
+              date
+              products {
+                product_id
+                variant_id
+                order
+                variant {
+                  name
+                  sku
+                }
+              }
+          }
+      }
+    `
+    const parser = new GraphQLParser(graphqlQuery, {})
+    const rjQuery = parser.parseQuery()
+
+    expect(rjQuery).toEqual({
+      alias: "order",
+      fields: ["id", "number", "date", "products"],
+      expands: [
+        {
+          property: "products",
+          fields: ["product_id", "variant_id", "order", "variant"],
+        },
+        {
+          property: "products.variant",
+          fields: ["name", "sku"],
+        },
+      ],
+    })
+  })
+
   it("Nested query with fields", async () => {
     const graphqlQuery = `
       query {
@@ -100,7 +138,7 @@ describe("RemoteJoiner.parseQuery", () => {
     const rjQuery = parser.parseQuery()
 
     expect(rjQuery).toEqual({
-      service: "order",
+      alias: "order",
       fields: ["id", "number", "date", "products"],
       expands: [
         {
@@ -138,7 +176,7 @@ describe("RemoteJoiner.parseQuery", () => {
     const rjQuery = parser.parseQuery()
 
     expect(rjQuery).toEqual({
-      service: "order",
+      alias: "order",
       fields: ["id", "number", "date", "products"],
       expands: [
         {
@@ -205,7 +243,7 @@ describe("RemoteJoiner.parseQuery", () => {
     const rjQuery = parser.parseQuery()
 
     expect(rjQuery).toEqual({
-      service: "order",
+      alias: "order",
       fields: ["id", "number", "date", "products"],
       expands: [
         {

packages/orchestration/src/__tests__/joiner/remote-joiner-data.ts

@@ -45,8 +45,9 @@ const fetchServiceDataCallback = async (
   relationship?: any
 ) => {
   const serviceConfig = expand.serviceConfig
-  const moduleRegistryName =
-    lowerCaseFirst(serviceConfig.serviceName) + "Service"
+  const moduleRegistryName = !serviceConfig.serviceName.endsWith("Service")
+    ? lowerCaseFirst(serviceConfig.serviceName) + "Service"
+    : serviceConfig.serviceName
 
   const service = container.resolve(moduleRegistryName)
   const methodName = relationship?.inverse
@@ -74,7 +75,7 @@ describe("RemoteJoiner", () => {
 
   it("Simple query of a service, its id and no fields specified", async () => {
     const query = {
-      service: "User",
+      service: "user",
       args: [
         {
           name: "id",
@@ -143,7 +144,7 @@ describe("RemoteJoiner", () => {
 
   it("Query of a service, expanding a property and restricting the fields expanded", async () => {
     const query = {
-      service: "User",
+      service: "user",
       args: [
         {
           name: "id",
@@ -215,7 +216,7 @@ describe("RemoteJoiner", () => {
 
   it("Query a service expanding multiple nested properties", async () => {
     const query = {
-      service: "Order",
+      service: "order",
       fields: ["number", "date", "products"],
       expands: [
         {

packages/orchestration/src/__tests__/joiner/remote-joiner.ts

@@ -49,7 +49,7 @@ describe("RemoteJoiner", () => {
 
   it("Simple query of a service, its id and no fields specified", async () => {
     const query = {
-      service: "User",
+      service: "user",
       args: [
         {
           name: "id",
@@ -69,20 +69,62 @@ describe("RemoteJoiner", () => {
     })
   })
 
-  it("Transforms main service name into PascalCase", async () => {
+  it("Simple query of a service by its alias", async () => {
     const query = {
-      service: "user",
+      alias: "customer",
       fields: ["id"],
+      args: [
+        {
+          name: "id",
+          value: "1",
+        },
+      ],
     }
 
     await joiner.query(query)
 
     expect(serviceMock.userService).toHaveBeenCalledTimes(1)
+    expect(serviceMock.userService).toHaveBeenCalledWith({
+      args: [],
+      fields: ["id"],
+      options: { id: ["1"] },
+    })
+  })
+
+  it("Simple query of a service by its alias with extra arguments", async () => {
+    const query = {
+      alias: "me",
+      fields: ["id"],
+      args: [
+        {
+          name: "id",
+          value: 1,
+        },
+        {
+          name: "arg1",
+          value: "abc",
+        },
+      ],
+    }
+
+    await joiner.query(query)
+
+    expect(serviceMock.userService).toHaveBeenCalledTimes(1)
+    expect(serviceMock.userService).toHaveBeenCalledWith({
+      args: [
+        {
+          name: "arg1",
+          value: "abc",
+        },
+      ],
+      fields: ["id"],
+      options: { id: [1] },
+    })
   })
 
   it("Simple query of a service, its id and a few fields specified", async () => {
     const query = {
-      service: "User",
+      service: "user",
       args: [
         {
           name: "id",
@@ -148,7 +190,7 @@ describe("RemoteJoiner", () => {
 
   it("Query a service using more than 1 argument, expanding a property with another argument", async () => {
     const query = {
-      service: "User",
+      service: "user",
       args: [
         {
           name: "id",
@@ -213,7 +255,7 @@ describe("RemoteJoiner", () => {
 
   it("Query a service expanding multiple nested properties", async () => {
     const query = {
-      service: "Order",
+      service: "order",
       fields: ["number", "date", "products"],
       expands: [
         {