Added: support for js resolver

Author: Pranav-Dakshina

examples/complete/main.tf

@@ -251,6 +251,17 @@ EOF
         "None",
       ]
     }
+
+    "Query.user" = {
+      kind    = "PIPELINE"
+      type    = "Query"
+      field   = "user"
+      runtime = "APPSYNC_JS"
+      code    = file("src/index.js")
+      functions = [
+        "None",
+      ]
+    }
   }
 }
 

examples/complete/schema.graphql

@@ -7,9 +7,15 @@ type Post {
   title: String!
 }
 
+type User {
+  id: ID!
+  name: String
+}
+
 type Query {
   singlePost(id: ID!): Post
   none(dummyString: String!): String!
+  user(id: ID!): User
 }
 
 schema {

examples/complete/src/index.js

@@ -0,0 +1,10 @@
+// For more examples, refer this doc: https://docs.aws.amazon.com/appsync/latest/devguide/configuring-resolvers-js.html
+import { util } from "@aws-appsync/utils";
+
+export function request(ctx) {
+  return {};
+}
+
+export function response(ctx) {
+  return ctx.result.items;
+}

main.tf

@@ -181,8 +181,20 @@ resource "aws_appsync_resolver" "this" {
   field  = each.value.field
   kind   = lookup(each.value, "kind", null)
 
-  request_template  = lookup(each.value, "request_template", tobool(lookup(each.value, "direct_lambda", false)) ? var.direct_lambda_request_template : "{}")
-  response_template = lookup(each.value, "response_template", tobool(lookup(each.value, "direct_lambda", false)) ? var.direct_lambda_response_template : "{}")
+  dynamic "runtime" {
+    for_each = toset(lookup(each.value, "kind", null) == "PIPELINE" && lookup(each.value, "runtime", null) == "APPSYNC_JS" ? [true] : [])
+
+    content {
+      name            = "APPSYNC_JS"
+      runtime_version = lookup(each.value, "runtime_version", "1.0.0")
+    }
+  }
+
+  # code is required when runtime is APPSYNC_JS
+  code = lookup(each.value, "kind", null) == "PIPELINE" && lookup(each.value, "runtime", null) == "APPSYNC_JS" ? lookup(each.value, "code") : null
+
+  request_template  = lookup(each.value, "request_template", tobool(lookup(each.value, "direct_lambda", false)) ? var.direct_lambda_request_template : lookup(each.value, "kind", null) == "PIPELINE" && lookup(each.value, "runtime", null) == "APPSYNC_JS" ? null : "{}")
+  response_template = lookup(each.value, "response_template", tobool(lookup(each.value, "direct_lambda", false)) ? var.direct_lambda_response_template : lookup(each.value, "kind", null) == "PIPELINE" && lookup(each.value, "runtime", null) == "APPSYNC_JS" ? null : "{}")
 
   data_source = lookup(each.value, "data_source", null) != null ? aws_appsync_datasource.this[each.value.data_source].name : lookup(each.value, "data_source_arn", null)