The resolver resources in CloudFormation format.

AppSyncResolvers.yaml

  AppSyncAllNotesQueryResolver:
    Type: "AWS::AppSync::Resolver"
    DependsOn: AppSyncSchema
    Properties:
      ApiId: !GetAtt AppSyncApi.ApiId
      TypeName: Query
      FieldName: allNotes
      DataSourceName: !GetAtt AppSyncNotesTableDataSource.Name
      RequestMappingTemplate: |
        {
          "version": "2017-02-28",
          "operation": "Query",
          "query": {
            "expression": "UserId = :id",
            "expressionValues": {
              ":id": $util.dynamodb.toDynamoDBJson($ctx.identity.sub)
            }
          }
        },
        "limit": $util.defaultIfNull(${ctx.args.limit}, 20),
        "nextToken": $util.toJson(${ctx.args.nextToken})
      ResponseMappingTemplate: |
        {
          "notes": $util.toJson($ctx.result.items),
          "nextToken": $util.toJson(${ctx.args.nextToken})
        }
  AppSyncGetNoteQueryResolver:
    Type: "AWS::AppSync::Resolver"
    DependsOn: AppSyncSchema
    Properties:
      ApiId: !GetAtt AppSyncApi.ApiId
      TypeName: Query
      FieldName: getNote
      DataSourceName: !GetAtt AppSyncNotesTableDataSource.Name
      RequestMappingTemplate: |
        {
          "version": "2012-02-28",
          "operation": "GetItem",
          "key": {
            "NoteId": $util.dynamodb.toDynamoDBJson($ctx.args.NoteId),
            "UserId": $util.dynamodb.toDynamoDBJson($ctx.identity.sub)
          }
        }
      ResponseMappingTemplate: "$util.toJson($ctx.result)"

  AppSyncSaveNoteMutationResolver:
    Type: "AWS::AppSync::Resolver"
    DependsOn: AppSyncSchema
    Properties:
      ApiId: !GetAtt AppSyncApi.ApiId
      TypeName: Mutation
      FieldName: saveNote
      DataSourceName: !GetAtt AppSyncNotesTableDataSource.Name
      RequestMappingTemplate: |
        {
          "version": "2012-02-28",
          "operation": "PutItem",
          "key": {
            "NoteId": $util.dynamodb.toDynamoDBJson($ctx.args.NoteId),
            "UserId": $util.dynamodb.toDynamoDBJson($ctx.identity.sub)
          },
          "attributeValues": {
            "title": $util.dynamodb.toDynamoDBJson($ctx.args.title),
            "content": $util.dynamodb.toDynamoDBJson($ctx.args.content)
          }
        }
      ResponseMappingTemplate: "$util.toJson($ctx.result)"

  AppSyncDeleteNoteMutationResolver:
    Type: "AWS::AppSync::Resolver"
    DependsOn: AppSyncSchema
    Properties:
      ApiId: !GetAtt AppSyncApi.ApiId
      TypeName: Mutation
      FieldName: deleteNote
      DataSourceName: !GetAtt AppSyncNotesTableDataSource.Name
      RequestMappingTemplate: |
        {
          "version": "2012-02-28",
          "operation": "DeleteItem",
          "key": {
            "NoteId": $util.dynamodb.toDynamoDBJson($ctx.args.NoteId),
            "UserId": $util.dynamodb.toDynamoDBJson($ctx.identity.sub)
          }
        }
      ResponseMappingTemplate: "$util.toJson($ctx.result)"