Examples with CONNECTIONS_KEY org.apache.dubbo.remoting.Constants.CONNECTIONS_KEY used on opensource projects

Example 1 with CONNECTIONS_KEY

use of org.apache.dubbo.remoting.Constants.CONNECTIONS_KEY in project dubbo by alibaba.

the class RestProtocol method doRefer.

@Override
protected <T> T doRefer(Class<T> serviceType, URL url) throws RpcException {
    // TODO more configs to add
    PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager();
    // 20 is the default maxTotal of current PoolingClientConnectionManager
    connectionManager.setMaxTotal(url.getParameter(CONNECTIONS_KEY, HTTPCLIENTCONNECTIONMANAGER_MAXTOTAL));
    connectionManager.setDefaultMaxPerRoute(url.getParameter(CONNECTIONS_KEY, HTTPCLIENTCONNECTIONMANAGER_MAXPERROUTE));
    if (connectionMonitor == null) {
        connectionMonitor = new ConnectionMonitor();
        connectionMonitor.start();
    }
    connectionMonitor.addConnectionManager(connectionManager);
    RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(url.getParameter(CONNECT_TIMEOUT_KEY, DEFAULT_CONNECT_TIMEOUT)).setSocketTimeout(url.getParameter(TIMEOUT_KEY, DEFAULT_TIMEOUT)).build();
    SocketConfig socketConfig = SocketConfig.custom().setSoKeepAlive(true).setTcpNoDelay(true).build();
    CloseableHttpClient httpClient = HttpClientBuilder.create().setConnectionManager(connectionManager).setKeepAliveStrategy((response, context) -> {
        HeaderElementIterator it = new BasicHeaderElementIterator(response.headerIterator(HTTP.CONN_KEEP_ALIVE));
        while (it.hasNext()) {
            HeaderElement he = it.nextElement();
            String param = he.getName();
            String value = he.getValue();
            if (value != null && param.equalsIgnoreCase(TIMEOUT_KEY)) {
                return Long.parseLong(value) * 1000;
            }
        }
        return HTTPCLIENT_KEEPALIVEDURATION;
    }).setDefaultRequestConfig(requestConfig).setDefaultSocketConfig(socketConfig).build();
    ApacheHttpClient4Engine engine = new ApacheHttpClient4Engine(httpClient);
    ResteasyClient client = new ResteasyClientBuilder().httpEngine(engine).build();
    clients.add(client);
    client.register(RpcContextFilter.class);
    for (String clazz : COMMA_SPLIT_PATTERN.split(url.getParameter(EXTENSION_KEY, ""))) {
        if (!StringUtils.isEmpty(clazz)) {
            try {
                client.register(Thread.currentThread().getContextClassLoader().loadClass(clazz.trim()));
            } catch (ClassNotFoundException e) {
                throw new RpcException("Error loading JAX-RS extension class: " + clazz.trim(), e);
            }
        }
    }
    // TODO protocol
    ResteasyWebTarget target = client.target("http://" + url.getHost() + ":" + url.getPort() + "/" + getContextPath(url));
    return target.proxy(serviceType);
}