middleware

type ContextMiddleware ¶

type ContextMiddleware struct {
}

ContextMiddleware does rewrite graphql requests based on schema annotations using a provided context object as input

example schema:

type Query {
	documents: [Document] @addArgumentFromContext(name: "user",contextKey: "user")
}

given there's an object with key "user" and value "jsmith@example.org" in the context

original Request:

query myDocuments {
	documents {
		sensitiveInformation
	}
}

Request after rewriting:

query myDocuments {
	documents(user: "jsmith@example.org") {
		sensitiveInformation
	}
}

func (a *ContextMiddleware) OnRequest(userValues map[string][]byte, l *lookup.Lookup, w *lookup.Walker, parser *parser.Parser, mod *parser.ManualAstMod) error

func (a *ContextMiddleware) OnResponse(userValues map[string][]byte, response *[]byte, l *lookup.Lookup, w *lookup.Walker, parser *parser.Parser, mod *parser.ManualAstMod) error

type ContextRewriteConfig ¶

type ContextRewriteConfig struct {
	// contains filtered or unexported fields
}

type GraphqlMiddleware ¶

type GraphqlMiddleware interface {
	OnRequest(userValues map[string][]byte, l *lookup.Lookup, w *lookup.Walker, parser *parser.Parser, mod *parser.ManualAstMod) error
	OnResponse(userValues map[string][]byte, response *[]byte, l *lookup.Lookup, w *lookup.Walker, parser *parser.Parser, mod *parser.ManualAstMod) error
}

type Invoker ¶

type Invoker struct {
	// contains filtered or unexported fields
}

func NewInvoker(middleWares ...GraphqlMiddleware) *Invoker

func (i *Invoker) InvokeMiddleWares(userValues map[string][]byte, request []byte) (err error)

func (i *Invoker) RewriteRequest(w io.Writer) error

func (i *Invoker) SetSchema(schema []byte) error

type InvokerPool ¶ added in v1.4.0

type InvokerPool struct {
	// contains filtered or unexported fields
}

func NewInvokerPool(size int, middleWares ...GraphqlMiddleware) *InvokerPool

func (i *InvokerPool) Free(index int)

func (i *InvokerPool) Get() (index int, invoker *Invoker)

type ValidationMiddleware ¶ added in v1.4.0

type ValidationMiddleware struct {
}

ValidationMiddleware is a middleware which validates the input Query against the Schema definition

func (v *ValidationMiddleware) OnRequest(userValues map[string][]byte, l *lookup.Lookup, w *lookup.Walker, parser *parser.Parser, mod *parser.ManualAstMod) error

func (v *ValidationMiddleware) OnResponse(userValues map[string][]byte, response *[]byte, l *lookup.Lookup, w *lookup.Walker, parser *parser.Parser, mod *parser.ManualAstMod) error