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I have setup AppSync with a Schema and Resolvers. I can export the Schema to a file, but I cannot see how to export the Resolvers.
I want to store these in a file so that I can source control them. They contain plenty of SQL code that I don't want to lose.
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Resolvers provide the implementation for how AppSync processes queries and mutations. They connect the GraphQL schema, the abstract definition of the API, and the services that provide the data, such as a database or a Lambda function. In practice, most of AppSync development is spent writing resolvers.
Data sources and resolvers are how AWS AppSync translates GraphQL requests and fetches information from your AWS resources. AWS AppSync has support for automatic provisioning and connections with certain data source types.
Adding a Resolver for MutationsAWS AppSync automatically converts arguments defined in the addTodo field from your GraphQL schema into DynamoDB operations. The previous example stores records in DynamoDB using a key of id , which is passed through from the mutation argument as $ctx.args.id .
In the AWS AppSync console choose the Queries tab on the left hand side. The pane on the right side enables you to click through the operations, including queries, mutations, and subscriptions that your schema has exposed. Choose the Mutation node to see a mutation.
Command template: TYPE_NAME values: Mutation, Query and Subscription.
aws appsync list-resolvers --api-id YOUR_API_ID --type-name TYPE_NAME >> YOUR_FILE.txt
Examples: With YOUR_API_ID = d5gebysm3 (The original length is 26 in my case)
aws appsync list-resolvers --api-id d5gebysm3 --type-name Mutation >> Mutation.txt
aws appsync list-resolvers --api-id d5gebysm3 --type-name Query >> Query.txt
aws appsync list-resolvers --api-id d5gebysm3 --type-name Subscription >> Subscription.txt
Before you go any farther, I would recommend you look into managing your AppSync resources with CloudFormation. CloudFormation templates can easily be saved in source control.
AppSync & CloudFormation Tutorials:
https://read.acloud.guru/deploy-a-graphql-service-on-aws-with-the-serverless-framework-7af8fc22a01d
https://read.acloud.guru/deploy-an-aws-appsync-graphql-api-with-amazon-cloudformation-9a783fdd8491
Or if your resolvers aren't doing anything custom, you can use Amplify's GraphQL Transformer. This allows you to annotate your schema and it will automatically generate resolvers from the annotations. Then you can put the annotated schema into source control. Documentation:
https://aws-amplify.github.io/docs/js/api#using-graphql-transformers
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