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graphql_relayer.go
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graphql_relayer.go
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package server
import (
"context"
"github.com/superisaac/nodemux/core"
"net/http"
)
// GraphQL Handler
type GraphQLRelayer struct {
rootCtx context.Context
//regex *regexp.Regexp
//chain nodemuxcore.ChainRef
acc *Acc
}
func NewGraphQLRelayer(rootCtx context.Context) *GraphQLRelayer {
return &GraphQLRelayer{
rootCtx: rootCtx,
//regex: regexp.MustCompile(`^/graphql/([^/]+\/[^/]+)(/.*)?$`),
}
}
func (self *GraphQLRelayer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
acc := self.acc
path := "/"
if acc == nil {
acc = AccFromContext(r.Context())
if acc == nil {
w.WriteHeader(404)
w.Write([]byte("acc not found"))
return
}
}
m := nodemuxcore.GetMultiplexer()
delegator := nodemuxcore.GetDelegatorFactory().GetGraphQLDelegator(acc.Chain.Namespace)
if delegator == nil {
w.WriteHeader(404)
w.Write([]byte("backend not found"))
return
}
err := delegator.DelegateGraphQL(self.rootCtx, m, acc.Chain, path, w, r)
if err != nil {
requestLog(r).Warnf("error delegate graphql %s", err)
w.WriteHeader(500)
w.Write([]byte("server error"))
}
} // GraphQLRelayer.ServeHTTP