AWS AppSync - 指令 "aws_subscribe" 不能用于 FIELD_DEFINITION
AWS AppSync - Directive "aws_subscribe" may not be used on FIELD_DEFINITION
我正在尝试掌握 AWS AppSync。我对 GraphQL 很陌生。我有以下 GraphQL:
type Mutation {
deleteParcel(geoHash: String!, type_id: String!): Parcel
addParcel(input: ParcelInput!): Parcel
batchAddParcels(parcels: [ParcelInput]): [Parcel]
}
type Parcel {
geoHash: String!
type_id: String!
}
type ParcelConnection {
items: [Parcel]
}
input ParcelInput {
geoHash: String!
type_id: String!
}
input ParcelsInput {
parcels: [ParcelInput]
}
type Query {
getNearbyParcels(geoHash: String!): ParcelConnection
}
type Subscription {
onAddParcel(geoHash: String, type_id: String): Parcel
@aws_subscribe(mutations: ["addParcel"])
onBatchAddParcels(geoHash: String): Parcel
@aws_subscribe(mutations: ["batchAddParcels"])
onDeleteParcel(geoHash: String, type_id: String): Parcel
@aws_subscribe(mutations: ["deleteParcel"])
}
schema {
query: Query
mutation: Mutation
subscription: Subscription
}
AWS 控制台上的所有设置似乎都很好。我得到 schema.json 然后 运行 命令:
aws-appsync-codegen generate AWSGraphQL.graphql --schema schema.json --output AppsyncAPI.swift
并得到响应:
../SnatchHQ/snatch_appsync/AppSync/AWSGraphQL.graphql: Directive "aws_subscribe" may not be used on FIELD_DEFINITION.
.../SnatchHQ/snatch_appsync/AppSync/AWSGraphQL.graphql: Directive "aws_subscribe" may not be used on FIELD_DEFINITION.
.../SnatchHQ/snatch_appsync/AppSync/AWSGraphQL.graphql: Directive "aws_subscribe" may not be used on FIELD_DEFINITION.
error: Validation of GraphQL query document failed
有人能帮忙吗?
如果文件 AWSGraphQL.graphql
是您的 API GraphQL 架构,那么就可以解释问题。您需要做的是定义一个 *.graphql
文件,该文件根据您的 GraphQL API 定义您的查询、变更和订阅操作。例如,以下查询定义将匹配您的架构
mutation AddParcel($geoHash: String!, $type_id: String!) {
addParcel(input: {
geoHash: $geoHash
type_id: $typeId
}) {
...Parcel
}
}
query GetNearbyParcels($geoHash: String!) {
getNearbyParcels(
geoHash: $geoHash
) {
...ParcelConnection
}
}
subscription OnAddParcel {
onAddParcel {
...Parcel
}
}
fragment Parcel on Parcel {
geoHash
type_id
}
fragment ParcelConnection on Parcel Connection {
items {
...Parcel
}
}
假设您将其命名为 parcels.graphql
,然后您可以调用以下命令生成 AddParcel 突变、GetNearbyParcels 查询和 OnAddParcel 订阅的 Swift 实现
aws-appsync-codegen generate parcels.graphql \
--schema schema.json \
--output AppSyncParcelsAPI.swift
我正在尝试掌握 AWS AppSync。我对 GraphQL 很陌生。我有以下 GraphQL:
type Mutation {
deleteParcel(geoHash: String!, type_id: String!): Parcel
addParcel(input: ParcelInput!): Parcel
batchAddParcels(parcels: [ParcelInput]): [Parcel]
}
type Parcel {
geoHash: String!
type_id: String!
}
type ParcelConnection {
items: [Parcel]
}
input ParcelInput {
geoHash: String!
type_id: String!
}
input ParcelsInput {
parcels: [ParcelInput]
}
type Query {
getNearbyParcels(geoHash: String!): ParcelConnection
}
type Subscription {
onAddParcel(geoHash: String, type_id: String): Parcel
@aws_subscribe(mutations: ["addParcel"])
onBatchAddParcels(geoHash: String): Parcel
@aws_subscribe(mutations: ["batchAddParcels"])
onDeleteParcel(geoHash: String, type_id: String): Parcel
@aws_subscribe(mutations: ["deleteParcel"])
}
schema {
query: Query
mutation: Mutation
subscription: Subscription
}
AWS 控制台上的所有设置似乎都很好。我得到 schema.json 然后 运行 命令:
aws-appsync-codegen generate AWSGraphQL.graphql --schema schema.json --output AppsyncAPI.swift
并得到响应:
../SnatchHQ/snatch_appsync/AppSync/AWSGraphQL.graphql: Directive "aws_subscribe" may not be used on FIELD_DEFINITION.
.../SnatchHQ/snatch_appsync/AppSync/AWSGraphQL.graphql: Directive "aws_subscribe" may not be used on FIELD_DEFINITION.
.../SnatchHQ/snatch_appsync/AppSync/AWSGraphQL.graphql: Directive "aws_subscribe" may not be used on FIELD_DEFINITION.
error: Validation of GraphQL query document failed
有人能帮忙吗?
如果文件 AWSGraphQL.graphql
是您的 API GraphQL 架构,那么就可以解释问题。您需要做的是定义一个 *.graphql
文件,该文件根据您的 GraphQL API 定义您的查询、变更和订阅操作。例如,以下查询定义将匹配您的架构
mutation AddParcel($geoHash: String!, $type_id: String!) {
addParcel(input: {
geoHash: $geoHash
type_id: $typeId
}) {
...Parcel
}
}
query GetNearbyParcels($geoHash: String!) {
getNearbyParcels(
geoHash: $geoHash
) {
...ParcelConnection
}
}
subscription OnAddParcel {
onAddParcel {
...Parcel
}
}
fragment Parcel on Parcel {
geoHash
type_id
}
fragment ParcelConnection on Parcel Connection {
items {
...Parcel
}
}
假设您将其命名为 parcels.graphql
,然后您可以调用以下命令生成 AddParcel 突变、GetNearbyParcels 查询和 OnAddParcel 订阅的 Swift 实现
aws-appsync-codegen generate parcels.graphql \
--schema schema.json \
--output AppSyncParcelsAPI.swift