How to use a prisma graphql subscription in node app









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I am following this guide. I am trying to listen to a graphQL subscription in my node app. I am having a lot of trouble implementing that subscription. I have a tried a few different ways, listed below, none of them are working.



// converted to rxjs observables
from(PrismaClient.$subscribe.priority(
mutation_in: "CREATED"
)).subscribe(
(next) =>
console.log("next", next);
,
() =>
console.log("error");
,
() =>
console.log("complete");

);



// as promise
PrismaClient.$subscribe.priority(
mutation_in: "CREATED"
).then(
(next) =>
console.log("next", next);

);



Both of these just return in the next:



 next: [Function: next],
return: [Function: return],
throw: [Function: throw],
'@@asyncIterator': [Function]


I would expect it to return the priority that was created any time a new one is created. However, it only returns one time and immediately completes and returns that object i listed above.



I understand this has something to do with it returning back an Promise<AsyncIterator<...>>, but i am not sure how to solve this issue.



How do i create a prisma graphql subscription in a node app using the prisma-client? I would also, like to convert this to rxjs instead of using promises. I just prefer Observables.










share|improve this question

























    up vote
    0
    down vote

    favorite












    I am following this guide. I am trying to listen to a graphQL subscription in my node app. I am having a lot of trouble implementing that subscription. I have a tried a few different ways, listed below, none of them are working.



    // converted to rxjs observables
    from(PrismaClient.$subscribe.priority(
    mutation_in: "CREATED"
    )).subscribe(
    (next) =>
    console.log("next", next);
    ,
    () =>
    console.log("error");
    ,
    () =>
    console.log("complete");

    );



    // as promise
    PrismaClient.$subscribe.priority(
    mutation_in: "CREATED"
    ).then(
    (next) =>
    console.log("next", next);

    );



    Both of these just return in the next:



     next: [Function: next],
    return: [Function: return],
    throw: [Function: throw],
    '@@asyncIterator': [Function]


    I would expect it to return the priority that was created any time a new one is created. However, it only returns one time and immediately completes and returns that object i listed above.



    I understand this has something to do with it returning back an Promise<AsyncIterator<...>>, but i am not sure how to solve this issue.



    How do i create a prisma graphql subscription in a node app using the prisma-client? I would also, like to convert this to rxjs instead of using promises. I just prefer Observables.










    share|improve this question























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I am following this guide. I am trying to listen to a graphQL subscription in my node app. I am having a lot of trouble implementing that subscription. I have a tried a few different ways, listed below, none of them are working.



      // converted to rxjs observables
      from(PrismaClient.$subscribe.priority(
      mutation_in: "CREATED"
      )).subscribe(
      (next) =>
      console.log("next", next);
      ,
      () =>
      console.log("error");
      ,
      () =>
      console.log("complete");

      );



      // as promise
      PrismaClient.$subscribe.priority(
      mutation_in: "CREATED"
      ).then(
      (next) =>
      console.log("next", next);

      );



      Both of these just return in the next:



       next: [Function: next],
      return: [Function: return],
      throw: [Function: throw],
      '@@asyncIterator': [Function]


      I would expect it to return the priority that was created any time a new one is created. However, it only returns one time and immediately completes and returns that object i listed above.



      I understand this has something to do with it returning back an Promise<AsyncIterator<...>>, but i am not sure how to solve this issue.



      How do i create a prisma graphql subscription in a node app using the prisma-client? I would also, like to convert this to rxjs instead of using promises. I just prefer Observables.










      share|improve this question













      I am following this guide. I am trying to listen to a graphQL subscription in my node app. I am having a lot of trouble implementing that subscription. I have a tried a few different ways, listed below, none of them are working.



      // converted to rxjs observables
      from(PrismaClient.$subscribe.priority(
      mutation_in: "CREATED"
      )).subscribe(
      (next) =>
      console.log("next", next);
      ,
      () =>
      console.log("error");
      ,
      () =>
      console.log("complete");

      );



      // as promise
      PrismaClient.$subscribe.priority(
      mutation_in: "CREATED"
      ).then(
      (next) =>
      console.log("next", next);

      );



      Both of these just return in the next:



       next: [Function: next],
      return: [Function: return],
      throw: [Function: throw],
      '@@asyncIterator': [Function]


      I would expect it to return the priority that was created any time a new one is created. However, it only returns one time and immediately completes and returns that object i listed above.



      I understand this has something to do with it returning back an Promise<AsyncIterator<...>>, but i am not sure how to solve this issue.



      How do i create a prisma graphql subscription in a node app using the prisma-client? I would also, like to convert this to rxjs instead of using promises. I just prefer Observables.







      typescript rxjs graphql prisma async-iterator






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 8 at 19:55









      prolink007

      20.1k1697158




      20.1k1697158






















          1 Answer
          1






          active

          oldest

          votes

















          up vote
          1
          down vote



          accepted










          Here's a suggestion with Promises and async/await:



          const main = async () => 
          const subscription = await PrismaClient.$subscribe.priority(
          mutation_in: 'CREATED',
          )
          handleSubscription(subscription)


          const handleSubscription = async (subscription) =>
          const result = await subscription.next()
          console.log('do stuff with', result.value)

          if (!result.done)
          console.log('handle again')
          handleSubscription(subscription)

          else
          console.log('done')



          main().catch(e => console.error(e))





          share|improve this answer




















          • This works, but is there a way to convert this to Observables?
            – prolink007
            Nov 9 at 15:18










          Your Answer






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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          1
          down vote



          accepted










          Here's a suggestion with Promises and async/await:



          const main = async () => 
          const subscription = await PrismaClient.$subscribe.priority(
          mutation_in: 'CREATED',
          )
          handleSubscription(subscription)


          const handleSubscription = async (subscription) =>
          const result = await subscription.next()
          console.log('do stuff with', result.value)

          if (!result.done)
          console.log('handle again')
          handleSubscription(subscription)

          else
          console.log('done')



          main().catch(e => console.error(e))





          share|improve this answer




















          • This works, but is there a way to convert this to Observables?
            – prolink007
            Nov 9 at 15:18














          up vote
          1
          down vote



          accepted










          Here's a suggestion with Promises and async/await:



          const main = async () => 
          const subscription = await PrismaClient.$subscribe.priority(
          mutation_in: 'CREATED',
          )
          handleSubscription(subscription)


          const handleSubscription = async (subscription) =>
          const result = await subscription.next()
          console.log('do stuff with', result.value)

          if (!result.done)
          console.log('handle again')
          handleSubscription(subscription)

          else
          console.log('done')



          main().catch(e => console.error(e))





          share|improve this answer




















          • This works, but is there a way to convert this to Observables?
            – prolink007
            Nov 9 at 15:18












          up vote
          1
          down vote



          accepted







          up vote
          1
          down vote



          accepted






          Here's a suggestion with Promises and async/await:



          const main = async () => 
          const subscription = await PrismaClient.$subscribe.priority(
          mutation_in: 'CREATED',
          )
          handleSubscription(subscription)


          const handleSubscription = async (subscription) =>
          const result = await subscription.next()
          console.log('do stuff with', result.value)

          if (!result.done)
          console.log('handle again')
          handleSubscription(subscription)

          else
          console.log('done')



          main().catch(e => console.error(e))





          share|improve this answer












          Here's a suggestion with Promises and async/await:



          const main = async () => 
          const subscription = await PrismaClient.$subscribe.priority(
          mutation_in: 'CREATED',
          )
          handleSubscription(subscription)


          const handleSubscription = async (subscription) =>
          const result = await subscription.next()
          console.log('do stuff with', result.value)

          if (!result.done)
          console.log('handle again')
          handleSubscription(subscription)

          else
          console.log('done')



          main().catch(e => console.error(e))






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 9 at 10:07









          nuno

          384




          384











          • This works, but is there a way to convert this to Observables?
            – prolink007
            Nov 9 at 15:18
















          • This works, but is there a way to convert this to Observables?
            – prolink007
            Nov 9 at 15:18















          This works, but is there a way to convert this to Observables?
          – prolink007
          Nov 9 at 15:18




          This works, but is there a way to convert this to Observables?
          – prolink007
          Nov 9 at 15:18

















           

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