CODEWITHSUNDEEP
graphqlapollo-server
Adriano dos Santos Fernandes
Adriano dos Santos Fernandes

Reputation: 755

Context cleanup with apollo graphql server

I can create a context function in ApolloServer that will be executed before each request.

How can I have a cleanup function (after request execution)?

Upvotes: 0

Views: 972

Answers (2)

Simon Temmerman
Simon Temmerman

Reputation: 203

not sure if this is still relevant but I found this medium article addressing this exact question.

You can use this snippet for when you want code to run after all the resolvers have run:

const server = new ApolloServer({
  typeDefs,
  resolvers,
  context: async ({ req }) => {
    ...
  },
  plugins: [
    {
      requestDidStart: () => ({
        willSendResponse: response => {
          // this will run after every request
          if (response.context.db) {
            response.context.db.close();
          }
        }
      })
    }
  ]
});

I looked in the docs and this plugin system is nowhere to be found. I haven't found anything to discourage use like this but it does not seem to be an official solution.

I tried it in my project and it does seem to work.

Upvotes: 2

David Mraz
David Mraz

Reputation: 585

Not sure why you would like to have context cleanup function? The context is set before as the middleware for each request therefore if you would like to have context set differently for another request you just inject the logic to the middleware. Maybe i just do not understand your use case for this. It would be helpful if you can clarify why you would like to apply it? The context is set per request, therefore you can inject enmpty object for some requests based on the req. If you need to clear up information from req object after graphql middleware you can do for example another middleware where you will set req.user (if you have authenticated user there) to null.

Upvotes: 0

Related Questions