Types for AWS AppSync event sent to Lambda resolvers.

appsync.go

package util

// ResolverType is one of "Query", "Mutation", or "Subscription".
type ResolverType string

const (
	// QueryResolver is the resolver type for query operations.
	QueryResolver ResolverType = "Query"
	// MutationResolver is the resolver type for mutation operations.
	MutationResolver ResolverType = "Mutation"
	// SubscriptionResolver is the resolver type for subscription operations.
	SubscriptionResolver ResolverType = "Subscription"
)

// AuthStrategy is one of "ALLOW" or "DENY"
type AuthStrategy string

const (
	// AllowAuth is allowing by default.
	AllowAuth AuthStrategy = "ALLOW"
	// DenyAuth is denying by default.
	DenyAuth AuthStrategy = "DENY"
)

// For full reference expand to see full JSON here. Some items are left out:
// https://github.com/aws/aws-lambda-go/issues/344#issue-767176415

type (

	// ResolverEvent is the object sent from AWS to the resolver.
	ResolverEvent struct {

		// Arguments are whatever is passed into the resolver as an
		// argument. This will be a JSON object with key as the field
		// and value as the value.
		Arguments map[string]interface{} `json:"arguments"`

		Info     ResolverInfo      `json:"info"`
		Identity *ResolverIdentity `json:"identity"`
	}

	// ResolverInfo contains information about the request.
	ResolverInfo struct {

		// ParentTypeName is "Query", "Mutation", or "Subscription".
		ParentTypeName ResolverType `json:"parentTypeName"`

		// FieldName is the resolver field within the parent type.
		FieldName string `json:"fieldName"`

		// SelectionSetList is a list of the requested fields to be
		// returned from the resolver.
		SelectionSetList []string `json:"selectionSetList"`
	}

	// ResolverIdentity contains identity information.
	ResolverIdentity struct {
		Claims              IdentityClaims `json:"claims"`
		DefaultAuthStrategy AuthStrategy   `json:"defaultAuthStrategy"`
		Groups              *[]string      `json:"groups"`
		Issuer              string         `json:"issuer"`
		SourceIP            []string       `json:"sourceIp"`
		Sub                 string         `json:"sub"`
		Username            string         `json:"username"`
	}

	// IdentityClaims contains properties of the identity.
	IdentityClaims struct {
		Aud                 string `json:"aud"`
		AuthTime            int64  `json:"auth_time"`
		CognitoUsername     string `json:"cognito:username"`
		Email               string `json:"email"`
		EmailVerified       bool   `json:"email_verified"`
		EventID             string `json:"event_id"`
		Exp                 int64  `json:"exp"`
		IAT                 int64  `json:"iat"`
		ISS                 string `json:"iss"`
		PhoneNumber         string `json:"phone_number"`
		PhoneNumberVerified bool   `json:"phone_number_verified"`
		Sub                 string `json:"sub"`
		TokenUse            string `json:"token_use"`
	}
)