Pollen Core AppSync

This project contains AppSync deployment and resolvers for AppSync APIs

Requirements

1. Terraform

Add / Update AWS AppSync Configuration

1. Add or update schema on schema.graphql located on ./appsync/schema.graphql

2. Add or update AppSync Resolver located on ./terraform/modules/appsync/resolvers. Note: 1 Folder per resolver

3. Create resolver with minimum file requirement as follows:

   └── resolvers (main resolver folder)/
       └── your-resolver/
           ├── resolvers/
           │   ├── request.vtl
           │   └── response.vtl
           ├── main.tf
           └── variable.tf

   main.tf contains AppSync Resolver and Datasource configuration

   resource "aws_appsync_datasource" "<datasource name>" {
       name             = <datasource name>
       api_id           = var.api_id
       type             = <datasource_type>
       service_role_arn = var.appsync.iam_role_arn
       lambda_config {
           function_arn = <AWS Lambda ARN>
       }
   }
   
   # Create resolver using the velocity templates in /resolvers/lambda.
   resource "aws_appsync_resolver" "<resolver name>" {
       api_id      = var.api_id
       type        = <resolver for schema type>
       field       = <resolved field>
       data_source = aws_appsync_datasource.get_catalog.name
   
       request_template  = file("${path.module}/resolvers/request.vtl")
       response_template = file("${path.module}/resolvers/response.vtl")
   }
   

   variable.tf contains variable that used by main.tf

   variable "api_id" {
       default = ""
       description = "appsync api id"
   }
   
   variable "appsync" {
      description = "appsync properties"
   }

   New files or new configuration inside those files can be added as needed

4. Add your AppSync resolver on main.tf file inside modules/appsync folder. Open ./terraform/modules/appsync/main.tf

   # ...
   # ...
   # ...
   module "<your new resolver>" {
       source  = "./resolvers/<your new resolver on ./terraform/modules/appsync/resolvers>"
       api_id  = aws_appsync_graphql_api.staging.id
       appsync = var.appsync
   }