private static PoolingHttpClientConnectionManager connectionManager()

in hugegraph-common/src/main/java/org/apache/hugegraph/rest/AbstractRestClient.java [446:485]
38 lines of code
5 McCabe index (conditional complexity)

    private static PoolingHttpClientConnectionManager connectionManager(
                                                      String url,
                                                      ClientConfig conf) {
        String protocol = (String) conf.getProperty("protocol");
        if (protocol == null || "http".equals(protocol)) {
            return new PoolingHttpClientConnectionManager(TTL, TimeUnit.HOURS);
        }

        assert "https".equals(protocol);
        String trustStoreFile = (String) conf.getProperty("trustStoreFile");
        E.checkArgument(trustStoreFile != null && !trustStoreFile.isEmpty(),
                        "The trust store file must be set when use https");
        String trustStorePass = (String) conf.getProperty("trustStorePassword");
        E.checkArgument(trustStorePass != null,
                        "The trust store password must be set when use https");
        SSLContext context = SslConfigurator.newInstance()
                                            .trustStoreFile(trustStoreFile)
                                            .trustStorePassword(trustStorePass)
                                            .securityProtocol("SSL")
                                            .createSSLContext();
        TrustManager[] trustAllManager = NoCheckTrustManager.create();
        try {
            context.init(null, trustAllManager, new SecureRandom());
        } catch (KeyManagementException e) {
            throw new ClientException("Failed to init security management", e);
        }

        HostnameVerifier verifier = new HostNameVerifier(url);
        ConnectionSocketFactory httpSocketFactory, httpsSocketFactory;
        httpSocketFactory = PlainConnectionSocketFactory.getSocketFactory();
        httpsSocketFactory = new SSLConnectionSocketFactory(context, verifier);
        Registry<ConnectionSocketFactory> registry =
                RegistryBuilder.<ConnectionSocketFactory>create()
                .register("http", httpSocketFactory)
                .register("https", httpsSocketFactory)
                .build();
        return new PoolingHttpClientConnectionManager(registry, null,
                                                      null, null, TTL,
                                                      TimeUnit.HOURS);
    }