private EurekaJerseyClient getOrCreateJerseyClient()

in eureka-core/src/main/java/com/netflix/eureka/transport/JerseyRemoteRegionClientFactory.java [74:125]
45 lines of code
7 McCabe index (conditional complexity)

    private EurekaJerseyClient getOrCreateJerseyClient(String region, EurekaEndpoint endpoint) {
        if (jerseyClient != null) {
            return jerseyClient;
        }

        synchronized (lock) {
            if (jerseyClient == null) {
                EurekaJerseyClientBuilder clientBuilder = new EurekaJerseyClientBuilder()
                        .withUserAgent("Java-EurekaClient-RemoteRegion")
                        .withEncoderWrapper(serverCodecs.getFullJsonCodec())
                        .withDecoderWrapper(serverCodecs.getFullJsonCodec())
                        .withConnectionTimeout(serverConfig.getRemoteRegionConnectTimeoutMs())
                        .withReadTimeout(serverConfig.getRemoteRegionReadTimeoutMs())
                        .withMaxConnectionsPerHost(serverConfig.getRemoteRegionTotalConnectionsPerHost())
                        .withMaxTotalConnections(serverConfig.getRemoteRegionTotalConnections())
                        .withConnectionIdleTimeout(serverConfig.getRemoteRegionConnectionIdleTimeoutSeconds());

                if (endpoint.isSecure()) {
                    clientBuilder.withClientName("Discovery-RemoteRegionClient-" + region);
                } else if ("true".equals(System.getProperty("com.netflix.eureka.shouldSSLConnectionsUseSystemSocketFactory"))) {
                    clientBuilder.withClientName("Discovery-RemoteRegionSystemSecureClient-" + region)
                            .withSystemSSLConfiguration();
                } else {
                    clientBuilder.withClientName("Discovery-RemoteRegionSecureClient-" + region)
                            .withTrustStoreFile(
                                    serverConfig.getRemoteRegionTrustStore(),
                                    serverConfig.getRemoteRegionTrustStorePassword()
                            );
                }
                jerseyClient = clientBuilder.build();
                ApacheHttpClient4 discoveryApacheClient = jerseyClient.getClient();

                // Add gzip content encoding support
                boolean enableGZIPContentEncodingFilter = serverConfig.shouldGZipContentFromRemoteRegion();
                if (enableGZIPContentEncodingFilter) {
                    discoveryApacheClient.addFilter(new GZIPContentEncodingFilter(false));
                }

                // always enable client identity headers
                String ip = null;
                try {
                    ip = InetAddress.getLocalHost().getHostAddress();
                } catch (UnknownHostException e) {
                    logger.warn("Cannot find localhost ip", e);
                }
                EurekaServerIdentity identity = new EurekaServerIdentity(ip);
                discoveryApacheClient.addFilter(new EurekaIdentityHeaderFilter(identity));
            }
        }

        return jerseyClient;
    }