2020-04-15 03:15:30 +00:00
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# Warp
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2020-04-17 10:22:24 +00:00
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`Async-graphql-warp`提供了两个`Filter`，`graphql`和`graphql_subscription`。
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`graphql`用于执行`Query`和`Mutation`请求，他总是要求POST方法，输出一个包含`Schema`和`QueryBuilder的元组`，你可以在之后组合其它Filter，或者直接调用`QueryBuilder::execute`执行查询。
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`graphql_subscription`用于实现基于Web Socket的订阅，它输出`warp::Reply`。
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## 请求例子
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```rust
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let schema = Schema::new(QueryRoot, EmptyMutation, EmptySubscription);
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let filter = async_graphql_warp::graphql(schema).and_then(|(schema, builder): (_, QueryBuilder)| async move {
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// 执行查询
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let resp = builder.execute(&schema).await;
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// 返回结果
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Ok::<_, Infallible>(warp::reply::json(&GQLResponse(resp)).into_response())
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});
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warp::serve(filter).run(([0, 0, 0, 0], 8000)).await;
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```
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## 订阅例子
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```rust
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let schema = Schema::new(QueryRoot, EmptyMutation, SubscriptionRoot);
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let filter = async_graphql_warp::graphql_subscription(schema);
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warp::serve(filter).run(([0, 0, 0, 0], 8000)).await;
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```
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