Package com.azure.core.http.netty

Class NettyAsyncHttpClientBuilder

  • public class NettyAsyncHttpClientBuilder
extends Object
    Builder class responsible for creating instances of HttpClient backed by Reactor Netty.

    Building a new HttpClient instance

     HttpClient client = new NettyAsyncHttpClientBuilder()
     .port(8080)
     .wiretap(true)
     .build();
    See Also:
    HttpClient

    • Constructor Detail

      • NettyAsyncHttpClientBuilder

        public NettyAsyncHttpClientBuilder()
        Creates a new builder instance, where a builder is capable of generating multiple instances of HttpClient backed by Reactor Netty.

      • NettyAsyncHttpClientBuilder

        public NettyAsyncHttpClientBuilder​(HttpClient nettyHttpClient)
        Creates a new builder instance, where a builder is capable of generating multiple instances of HttpClient based on the provided Reactor Netty HttpClient. 
         // Creates a reactor-netty client with netty logging enabled.
 reactor.netty.http.client.HttpClient baseHttpClient = reactor.netty.http.client.HttpClient.create()
     .wiretap(TcpClient.class.getName(), LogLevel.INFO);
 // Create an HttpClient based on above reactor-netty client and configure EventLoop count.
 HttpClient client = new NettyAsyncHttpClientBuilder(baseHttpClient)
     .eventLoopGroup(new NioEventLoopGroup(5))
     .build();
        Parameters:
        nettyHttpClient - base reactor netty HttpClient

    • Method Detail

      • build

        public HttpClient build()
        Creates a new Netty-backed HttpClient instance on every call, using the configuration set in the builder at the time of the build method call.
        Returns:
        A new Netty-backed HttpClient instance.
        Throws:
        IllegalStateException - If the builder is configured to use an unknown proxy type.

      • connectionProvider

        public NettyAsyncHttpClientBuilder connectionProvider​(ConnectionProvider connectionProvider)
        Sets the connection provider.

        Code Sample

         // The following creates a connection provider which will have each connection use the base name
 // 'myHttpConnection', has a limit of 500 concurrent connections in the connection pool, has no limit on the
 // number of connection requests that can be pending when all connections are in use, and removes a connection
 // from the pool if the connection isn't used for 60 seconds.
 ConnectionProvider connectionProvider = ConnectionProvider.builder("myHttpConnection")
     .maxConnections(500)
     .pendingAcquireMaxCount(-1)
     .maxIdleTime(Duration.ofSeconds(60))
     .build();

 HttpClient client = new NettyAsyncHttpClientBuilder()
     .connectionProvider(connectionProvider)
     .build();
        Parameters:
        connectionProvider - the connection provider
        Returns:
        the updated NettyAsyncHttpClientBuilder object.

      • wiretap

        public NettyAsyncHttpClientBuilder wiretap​(boolean enableWiretap)
        Enables the Netty wiretap feature.
        Parameters:
        enableWiretap - Flag indicating wiretap status
        Returns:
        the updated NettyAsyncHttpClientBuilder object.

      • port

        public NettyAsyncHttpClientBuilder port​(int port)
        Sets the port which this client should connect, which by default will be set to port 80.
        Parameters:
        port - The port to connect to.
        Returns:
        the updated NettyAsyncHttpClientBuilder object.

      • eventLoopGroup

        public NettyAsyncHttpClientBuilder eventLoopGroup​(EventLoopGroup eventLoopGroup)
        Sets the IO event loop group that will be used to run IO loops.

        Code Samples

         int threadCount = 5;
 HttpClient client = new NettyAsyncHttpClientBuilder()
     .eventLoopGroup(new NioEventLoopGroup(threadCount))
     .build();
        Parameters:
        eventLoopGroup - The EventLoopGroup that will run IO loops.
        Returns:
        the updated NettyAsyncHttpClientBuilder object.

      • configuration

        public NettyAsyncHttpClientBuilder configuration​(Configuration configuration)
        Sets the configuration store that is used during construction of the HTTP client.

        The default configuration store is a clone of the global configuration store, use Configuration.NONE to bypass using configuration settings during construction.

        Parameters:
        configuration - The configuration store used to
        Returns:
        The updated NettyAsyncHttpClientBuilder object.

      • disableBufferCopy

        public NettyAsyncHttpClientBuilder disableBufferCopy​(boolean disableBufferCopy)
        Disables deep copy of response ByteBuffer into a heap location that is managed by this client as opposed to the underlying netty library which may use direct buffer pool.
        Caution: Disabling this is not recommended as it can lead to data corruption if the downstream consumers of the response do not handle the byte buffers before netty releases them. If copy is disabled, underlying Netty layer can potentially reclaim byte array backed by the ByteBuffer upon the return of onNext(). So, users should ensure they process the ByteBuffer immediately and then return. 
         HttpClient client = new NettyAsyncHttpClientBuilder()
     .port(8080)
     .disableBufferCopy(true)
     .build();

 client.send(httpRequest)
     .flatMapMany(response -> response.getBody())
     .map(byteBuffer -> completeProcessingByteBuffer(byteBuffer))
     .subscribe();
        Parameters:
        disableBufferCopy - If set to true, the client built from this builder will not deep-copy response ByteBuffers.
        Returns:
        The updated NettyAsyncHttpClientBuilder object.

      • connectTimeout

        public NettyAsyncHttpClientBuilder connectTimeout​(Duration connectTimeout)
        Sets the connection timeout for a request to be sent.

        The connection timeout begins once the request attempts to connect to the remote host and finishes once the connection is resolved.

        If connectTimeout is null either Configuration.PROPERTY_AZURE_REQUEST_CONNECT_TIMEOUT or a 10-second timeout will be used, if it is a Duration less than or equal to zero then no timeout will be applied. When applying the timeout the greatest of one millisecond and the value of connectTimeout will be used.

        By default the connection timeout is 10 seconds.

        Parameters:
        connectTimeout - Connect timeout duration.
        Returns:
        The updated NettyAsyncHttpClientBuilder object.

      • writeTimeout

        public NettyAsyncHttpClientBuilder writeTimeout​(Duration writeTimeout)
        Sets the writing timeout for a request to be sent.

        The writing timeout does not apply to the entire request but to the request being sent over the wire. For example a request body which emits 10 8KB buffers will trigger 10 write operations, the last write tracker will update when each operation completes and the outbound buffer will be periodically checked to determine if it is still draining.

        If writeTimeout is null either Configuration.PROPERTY_AZURE_REQUEST_WRITE_TIMEOUT or a 60-second timeout will be used, if it is a Duration less than or equal to zero then no write timeout will be applied. When applying the timeout the greatest of one millisecond and the value of writeTimeout will be used.

        Parameters:
        writeTimeout - Write operation timeout duration.
        Returns:
        The updated NettyAsyncHttpClientBuilder object.

      • responseTimeout

        public NettyAsyncHttpClientBuilder responseTimeout​(Duration responseTimeout)
        Sets the response timeout duration used when waiting for a server to reply.

        The response timeout begins once the request write completes and finishes once the first response read is triggered when the server response is received.

        If responseTimeout is null either Configuration.PROPERTY_AZURE_REQUEST_RESPONSE_TIMEOUT or a 60-second timeout will be used, if it is a Duration less than or equal to zero then no timeout will be applied to the response. When applying the timeout the greatest of one millisecond and the value of responseTimeout will be used.

        Parameters:
        responseTimeout - Response timeout duration.
        Returns:
        The updated NettyAsyncHttpClientBuilder object.

      • readTimeout

        public NettyAsyncHttpClientBuilder readTimeout​(Duration readTimeout)
        Sets the read timeout duration used when reading the server response.

        The read timeout begins once the first response read is triggered after the server response is received. This timeout triggers periodically but won't fire its operation if another read operation has completed between when the timeout is triggered and completes.

        If readTimeout is null or Configuration.PROPERTY_AZURE_REQUEST_READ_TIMEOUT or a 60-second timeout will be used, if it is a Duration less than or equal to zero then no timeout period will be applied to response read. When applying the timeout the greatest of one millisecond and the value of readTimeout will be used.

        Parameters:
        readTimeout - Read timeout duration.
        Returns:
        The updated NettyAsyncHttpClientBuilder object.