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server.go
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server.go
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package api
import (
"encoding/json"
"fmt"
"net/http"
"os"
"github.com/dgraph-io/dgo/v210"
"github.com/dgraph-io/dgo/v210/protos/api"
"github.com/go-chi/chi"
"github.com/go-chi/chi/middleware"
"github.com/hasura/go-graphql-client"
"github.com/Phill240/dgraph-lambda-go/resolver"
"google.golang.org/grpc"
)
func RunServer(setupResolver func(r *resolver.Resolver, gql *graphql.Client, dql *dgo.Dgraph)) error {
dgraphqlUrl := os.Getenv("DGRAPHQL_URL")
dqlUrl := os.Getenv("DQL_URL")
gql := graphql.NewClient(dgraphqlUrl+"/graphql", nil)
/* Setup DQL-Client */
conn, err := grpc.Dial(dqlUrl, grpc.WithInsecure(), grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(100*1000*1000)))
if err != nil {
fmt.Println(err)
return err
}
defer conn.Close()
dql := dgo.NewDgraphClient(api.NewDgraphClient(conn))
/* Setup Resolver */
res := resolver.NewResolver()
setupResolver(res, gql, dql)
/* Setup Router */
r := chi.NewRouter()
r.Use(middleware.Logger)
r.Post("/graphql-worker", func(w http.ResponseWriter, r *http.Request) {
decoder := json.NewDecoder(r.Body)
var dbody resolver.DBody
err := decoder.Decode(&dbody)
if err != nil {
fmt.Println(err.Error())
}
response, err := res.Resolve(r.Context(), &dbody)
if err != nil {
fmt.Println(err.Error())
w.WriteHeader(500)
w.Write([]byte(err.Error()))
}
w.Write(response)
})
fmt.Println("Lambda listening on 8686")
fmt.Println(http.ListenAndServe(":8686", r))
return nil
}