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/*
* Copyright (c) 2008-2016, Hazelcast, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.client.config;
import com.hazelcast.client.util.RandomLB;
import com.hazelcast.client.util.RoundRobinLB;
import com.hazelcast.config.AbstractConfigBuilder;
import com.hazelcast.config.ConfigLoader;
import com.hazelcast.config.DiscoveryConfig;
import com.hazelcast.config.DiscoveryStrategyConfig;
import com.hazelcast.config.EvictionConfig;
import com.hazelcast.config.EvictionPolicy;
import com.hazelcast.config.InMemoryFormat;
import com.hazelcast.config.InvalidConfigurationException;
import com.hazelcast.config.ListenerConfig;
import com.hazelcast.config.NearCacheConfig;
import com.hazelcast.config.SSLConfig;
import com.hazelcast.config.SerializationConfig;
import com.hazelcast.config.SocketInterceptorConfig;
import com.hazelcast.logging.ILogger;
import com.hazelcast.logging.Logger;
import com.hazelcast.nio.IOUtil;
import com.hazelcast.util.ExceptionUtil;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import static com.hazelcast.client.config.ClientXmlElements.EXECUTOR_POOL_SIZE;
import static com.hazelcast.client.config.ClientXmlElements.GROUP;
import static com.hazelcast.client.config.ClientXmlElements.INSTANCE_NAME;
import static com.hazelcast.client.config.ClientXmlElements.LICENSE_KEY;
import static com.hazelcast.client.config.ClientXmlElements.LISTENERS;
import static com.hazelcast.client.config.ClientXmlElements.LOAD_BALANCER;
import static com.hazelcast.client.config.ClientXmlElements.NATIVE_MEMORY;
import static com.hazelcast.client.config.ClientXmlElements.NEAR_CACHE;
import static com.hazelcast.client.config.ClientXmlElements.NETWORK;
import static com.hazelcast.client.config.ClientXmlElements.PROPERTIES;
import static com.hazelcast.client.config.ClientXmlElements.PROXY_FACTORIES;
import static com.hazelcast.client.config.ClientXmlElements.QUERY_CACHES;
import static com.hazelcast.client.config.ClientXmlElements.SECURITY;
import static com.hazelcast.client.config.ClientXmlElements.SERIALIZATION;
import static com.hazelcast.client.config.ClientXmlElements.canOccurMultipleTimes;
import static com.hazelcast.util.StringUtil.LINE_SEPARATOR;
import static com.hazelcast.util.StringUtil.upperCaseInternal;
/**
* Loads the {@link com.hazelcast.client.config.ClientConfig} using XML.
*/
public class XmlClientConfigBuilder extends AbstractConfigBuilder {
private static final ILogger LOGGER = Logger.getLogger(XmlClientConfigBuilder.class);
private final QueryCacheConfigBuilderHelper queryCacheConfigBuilderHelper = new QueryCacheConfigBuilderHelper();
private final Set occurrenceSet = new HashSet();
private final InputStream in;
private Properties properties = System.getProperties();
private ClientConfig clientConfig;
public XmlClientConfigBuilder(String resource) throws IOException {
URL url = ConfigLoader.locateConfig(resource);
if (url == null) {
throw new IllegalArgumentException("Could not load " + resource);
}
this.in = url.openStream();
}
public XmlClientConfigBuilder(File file) throws IOException {
if (file == null) {
throw new NullPointerException("File is null!");
}
this.in = new FileInputStream(file);
}
public XmlClientConfigBuilder(URL url) throws IOException {
if (url == null) {
throw new NullPointerException("URL is null!");
}
this.in = url.openStream();
}
public XmlClientConfigBuilder(InputStream in) {
this.in = in;
}
/**
* Loads the client config using the following resolution mechanism:
*
*
first it checks if a system property 'hazelcast.client.config' is set. If it exist and it begins with
* 'classpath:', then a classpath resource is loaded. Else it will assume it is a file reference
*
it checks if a hazelcast-client.xml is available in the working dir
*
it checks if a hazelcast-client.xml is available on the classpath
*
it loads the hazelcast-client-default.xml
*
*/
public XmlClientConfigBuilder() {
XmlClientConfigLocator locator = new XmlClientConfigLocator();
this.in = locator.getIn();
}
@Override
protected Document parse(InputStream inputStream) throws Exception {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
dbf.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
DocumentBuilder builder = dbf.newDocumentBuilder();
try {
return builder.parse(inputStream);
} catch (Exception e) {
String msg = "Failed to parse Config Stream"
+ LINE_SEPARATOR + "Exception: " + e.getMessage()
+ LINE_SEPARATOR + "HazelcastClient startup interrupted.";
LOGGER.severe(msg);
throw new InvalidConfigurationException(e.getMessage(), e);
} finally {
IOUtil.closeResource(inputStream);
}
}
@Override
protected Properties getProperties() {
return properties;
}
public void setProperties(Properties properties) {
this.properties = properties;
}
@Override
protected ConfigType getXmlType() {
return ConfigType.CLIENT;
}
public ClientConfig build() {
return build(Thread.currentThread().getContextClassLoader());
}
public ClientConfig build(ClassLoader classLoader) {
ClientConfig clientConfig = new ClientConfig();
clientConfig.setClassLoader(classLoader);
try {
parseAndBuildConfig(clientConfig);
return clientConfig;
} catch (Exception e) {
throw ExceptionUtil.rethrow(e);
} finally {
IOUtil.closeResource(in);
}
}
private void parseAndBuildConfig(ClientConfig clientConfig) throws Exception {
this.clientConfig = clientConfig;
Document doc = parse(in);
Element root = doc.getDocumentElement();
try {
root.getTextContent();
} catch (Throwable e) {
domLevel3 = false;
}
process(root);
schemaValidation(root.getOwnerDocument());
handleConfig(root);
}
private void handleConfig(Element docElement) throws Exception {
for (Node node : childElements(docElement)) {
String nodeName = cleanNodeName(node);
if (occurrenceSet.contains(nodeName)) {
throw new InvalidConfigurationException("Duplicate '" + nodeName + "' definition found in XML configuration. ");
}
handleXmlNode(node, nodeName);
if (!canOccurMultipleTimes(nodeName)) {
occurrenceSet.add(nodeName);
}
}
}
private void handleXmlNode(Node node, String nodeName) throws Exception {
if (SECURITY.isEqual(nodeName)) {
handleSecurity(node);
} else if (PROXY_FACTORIES.isEqual(nodeName)) {
handleProxyFactories(node);
} else if (PROPERTIES.isEqual(nodeName)) {
fillProperties(node, clientConfig.getProperties());
} else if (SERIALIZATION.isEqual(nodeName)) {
handleSerialization(node);
} else if (NATIVE_MEMORY.isEqual(nodeName)) {
fillNativeMemoryConfig(node, clientConfig.getNativeMemoryConfig());
} else if (GROUP.isEqual(nodeName)) {
handleGroup(node);
} else if (LISTENERS.isEqual(nodeName)) {
handleListeners(node);
} else if (NETWORK.isEqual(nodeName)) {
handleNetwork(node);
} else if (LOAD_BALANCER.isEqual(nodeName)) {
handleLoadBalancer(node);
} else if (NEAR_CACHE.isEqual(nodeName)) {
handleNearCache(node);
} else if (QUERY_CACHES.isEqual(nodeName)) {
queryCacheConfigBuilderHelper.handleQueryCache(clientConfig, node);
} else if (EXECUTOR_POOL_SIZE.isEqual(nodeName)) {
handleExecutorPoolSize(node);
} else if (LICENSE_KEY.isEqual(nodeName)) {
clientConfig.setLicenseKey(getTextContent(node));
} else if (INSTANCE_NAME.isEqual(nodeName)) {
clientConfig.setInstanceName(getTextContent(node));
}
}
private void handleExecutorPoolSize(Node node) {
int poolSize = Integer.parseInt(getTextContent(node));
clientConfig.setExecutorPoolSize(poolSize);
}
private void handleNearCache(Node node) {
String name = getAttribute(node, "name");
NearCacheConfig nearCacheConfig = new NearCacheConfig();
for (Node child : childElements(node)) {
String nodeName = cleanNodeName(child);
String value = getTextContent(child).trim();
if ("max-size".equals(nodeName)) {
nearCacheConfig.setMaxSize(Integer.parseInt(value));
} else if ("time-to-live-seconds".equals(nodeName)) {
nearCacheConfig.setTimeToLiveSeconds(Integer.parseInt(value));
} else if ("max-idle-seconds".equals(nodeName)) {
nearCacheConfig.setMaxIdleSeconds(Integer.parseInt(value));
} else if ("eviction-policy".equals(nodeName)) {
nearCacheConfig.setEvictionPolicy(value);
} else if ("in-memory-format".equals(nodeName)) {
nearCacheConfig.setInMemoryFormat(InMemoryFormat.valueOf(upperCaseInternal(value)));
} else if ("invalidate-on-change".equals(nodeName)) {
nearCacheConfig.setInvalidateOnChange(Boolean.parseBoolean(value));
} else if ("cache-local-entries".equals(nodeName)) {
nearCacheConfig.setCacheLocalEntries(Boolean.parseBoolean(value));
} else if ("local-update-policy".equals(nodeName)) {
NearCacheConfig.LocalUpdatePolicy policy = NearCacheConfig.LocalUpdatePolicy.valueOf(value);
nearCacheConfig.setLocalUpdatePolicy(policy);
} else if ("eviction".equals(nodeName)) {
nearCacheConfig.setEvictionConfig(getEvictionConfig(child));
}
}
clientConfig.addNearCacheConfig(name, nearCacheConfig);
}
private EvictionConfig getEvictionConfig(Node node) {
EvictionConfig evictionConfig = new EvictionConfig();
Node size = node.getAttributes().getNamedItem("size");
Node maxSizePolicy = node.getAttributes().getNamedItem("max-size-policy");
Node evictionPolicy = node.getAttributes().getNamedItem("eviction-policy");
if (size != null) {
evictionConfig.setSize(Integer.parseInt(getTextContent(size)));
}
if (maxSizePolicy != null) {
evictionConfig.setMaximumSizePolicy(
EvictionConfig.MaxSizePolicy.valueOf(
upperCaseInternal(getTextContent(maxSizePolicy)))
);
}
if (evictionPolicy != null) {
evictionConfig.setEvictionPolicy(
EvictionPolicy.valueOf(
upperCaseInternal(getTextContent(evictionPolicy)))
);
}
return evictionConfig;
}
private void handleLoadBalancer(Node node) {
String type = getAttribute(node, "type");
if ("random".equals(type)) {
clientConfig.setLoadBalancer(new RandomLB());
} else if ("round-robin".equals(type)) {
clientConfig.setLoadBalancer(new RoundRobinLB());
}
}
private void handleNetwork(Node node) {
ClientNetworkConfig clientNetworkConfig = new ClientNetworkConfig();
for (Node child : childElements(node)) {
String nodeName = cleanNodeName(child);
if ("cluster-members".equals(nodeName)) {
handleClusterMembers(child, clientNetworkConfig);
} else if ("smart-routing".equals(nodeName)) {
clientNetworkConfig.setSmartRouting(Boolean.parseBoolean(getTextContent(child)));
} else if ("redo-operation".equals(nodeName)) {
clientNetworkConfig.setRedoOperation(Boolean.parseBoolean(getTextContent(child)));
} else if ("connection-timeout".equals(nodeName)) {
clientNetworkConfig.setConnectionTimeout(Integer.parseInt(getTextContent(child)));
} else if ("connection-attempt-period".equals(nodeName)) {
clientNetworkConfig.setConnectionAttemptPeriod(Integer.parseInt(getTextContent(child)));
} else if ("connection-attempt-limit".equals(nodeName)) {
clientNetworkConfig.setConnectionAttemptLimit(Integer.parseInt(getTextContent(child)));
} else if ("socket-options".equals(nodeName)) {
handleSocketOptions(child, clientNetworkConfig);
} else if ("socket-interceptor".equals(nodeName)) {
handleSocketInterceptorConfig(child, clientNetworkConfig);
} else if ("ssl".equals(nodeName)) {
handleSSLConfig(child, clientNetworkConfig);
} else if ("aws".equals(nodeName)) {
handleAWS(child, clientNetworkConfig);
} else if ("discovery-strategies".equals(nodeName)) {
handleDiscoveryStrategies(child, clientNetworkConfig);
}
}
clientConfig.setNetworkConfig(clientNetworkConfig);
}
private void handleDiscoveryStrategies(Node node, ClientNetworkConfig clientNetworkConfig) {
DiscoveryConfig discoveryConfig = clientNetworkConfig.getDiscoveryConfig();
for (Node child : childElements(node)) {
String name = cleanNodeName(child);
if ("discovery-strategy".equals(name)) {
handleDiscoveryStrategy(child, discoveryConfig);
} else if ("node-filter".equals(name)) {
handleDiscoveryNodeFilter(child, discoveryConfig);
}
}
}
private void handleDiscoveryNodeFilter(Node node, DiscoveryConfig discoveryConfig) {
NamedNodeMap atts = node.getAttributes();
Node att = atts.getNamedItem("class");
if (att != null) {
discoveryConfig.setNodeFilterClass(getTextContent(att).trim());
}
}
private void handleDiscoveryStrategy(Node node, DiscoveryConfig discoveryConfig) {
NamedNodeMap atts = node.getAttributes();
boolean enabled = false;
String clazz = null;
for (int a = 0; a < atts.getLength(); a++) {
Node att = atts.item(a);
String value = getTextContent(att).trim();
if ("enabled".equalsIgnoreCase(att.getNodeName())) {
enabled = getBooleanValue(value);
} else if ("class".equals(att.getNodeName())) {
clazz = value;
}
}
if (!enabled || clazz == null) {
return;
}
Map properties = new HashMap();
for (Node child : childElements(node)) {
String name = cleanNodeName(child);
if ("properties".equals(name)) {
fillProperties(child, properties);
}
}
discoveryConfig.addDiscoveryStrategyConfig(new DiscoveryStrategyConfig(clazz, properties));
}
private void handleAWS(Node node, ClientNetworkConfig clientNetworkConfig) {
ClientAwsConfig clientAwsConfig = handleAwsAttributes(node);
for (Node n : childElements(node)) {
String value = getTextContent(n).trim();
if ("secret-key".equals(cleanNodeName(n))) {
clientAwsConfig.setSecretKey(value);
} else if ("access-key".equals(cleanNodeName(n))) {
clientAwsConfig.setAccessKey(value);
} else if ("region".equals(cleanNodeName(n))) {
clientAwsConfig.setRegion(value);
} else if ("host-header".equals(cleanNodeName(n))) {
clientAwsConfig.setHostHeader(value);
} else if ("security-group-name".equals(cleanNodeName(n))) {
clientAwsConfig.setSecurityGroupName(value);
} else if ("tag-key".equals(cleanNodeName(n))) {
clientAwsConfig.setTagKey(value);
} else if ("tag-value".equals(cleanNodeName(n))) {
clientAwsConfig.setTagValue(value);
} else if ("inside-aws".equals(cleanNodeName(n))) {
clientAwsConfig.setInsideAws(getBooleanValue(value));
} else if ("iam-role".equals(cleanNodeName(n))) {
clientAwsConfig.setIamRole(value);
}
}
if (!clientAwsConfig.isInsideAws() && clientAwsConfig.getIamRole() != null) {
throw new InvalidConfigurationException("You cannot set IAM Role from outside EC2");
}
clientNetworkConfig.setAwsConfig(clientAwsConfig);
}
private ClientAwsConfig handleAwsAttributes(Node node) {
NamedNodeMap atts = node.getAttributes();
ClientAwsConfig clientAwsConfig = new ClientAwsConfig();
for (int i = 0; i < atts.getLength(); i++) {
Node att = atts.item(i);
String value = getTextContent(att).trim();
if ("enabled".equalsIgnoreCase(att.getNodeName())) {
clientAwsConfig.setEnabled(getBooleanValue(value));
} else if (att.getNodeName().equals("connection-timeout-seconds")) {
int timeout = getIntegerValue("connection-timeout-seconds", value);
clientAwsConfig.setConnectionTimeoutSeconds(timeout);
}
}
return clientAwsConfig;
}
private void handleSSLConfig(Node node, ClientNetworkConfig clientNetworkConfig) {
SSLConfig sslConfig = new SSLConfig();
NamedNodeMap atts = node.getAttributes();
Node enabledNode = atts.getNamedItem("enabled");
boolean enabled = enabledNode != null && getBooleanValue(getTextContent(enabledNode).trim());
sslConfig.setEnabled(enabled);
for (Node n : childElements(node)) {
String nodeName = cleanNodeName(n);
if ("factory-class-name".equals(nodeName)) {
sslConfig.setFactoryClassName(getTextContent(n).trim());
} else if ("properties".equals(nodeName)) {
fillProperties(n, sslConfig.getProperties());
}
}
clientNetworkConfig.setSSLConfig(sslConfig);
}
private void handleSocketOptions(Node node, ClientNetworkConfig clientNetworkConfig) {
SocketOptions socketOptions = clientConfig.getSocketOptions();
for (Node child : childElements(node)) {
String nodeName = cleanNodeName(child);
if ("tcp-no-delay".equals(nodeName)) {
socketOptions.setTcpNoDelay(Boolean.parseBoolean(getTextContent(child)));
} else if ("keep-alive".equals(nodeName)) {
socketOptions.setKeepAlive(Boolean.parseBoolean(getTextContent(child)));
} else if ("reuse-address".equals(nodeName)) {
socketOptions.setReuseAddress(Boolean.parseBoolean(getTextContent(child)));
} else if ("linger-seconds".equals(nodeName)) {
socketOptions.setLingerSeconds(Integer.parseInt(getTextContent(child)));
} else if ("buffer-size".equals(nodeName)) {
socketOptions.setBufferSize(Integer.parseInt(getTextContent(child)));
}
}
clientNetworkConfig.setSocketOptions(socketOptions);
}
private void handleClusterMembers(Node node, ClientNetworkConfig clientNetworkConfig) {
for (Node child : childElements(node)) {
if ("address".equals(cleanNodeName(child))) {
clientNetworkConfig.addAddress(getTextContent(child));
}
}
}
private void handleListeners(Node node) throws Exception {
for (Node child : childElements(node)) {
if ("listener".equals(cleanNodeName(child))) {
String className = getTextContent(child);
clientConfig.addListenerConfig(new ListenerConfig(className));
}
}
}
private void handleGroup(Node node) {
for (Node n : childElements(node)) {
String value = getTextContent(n).trim();
String nodeName = cleanNodeName(n);
if ("name".equals(nodeName)) {
clientConfig.getGroupConfig().setName(value);
} else if ("password".equals(nodeName)) {
clientConfig.getGroupConfig().setPassword(value);
}
}
}
private void handleSerialization(Node node) {
SerializationConfig serializationConfig = parseSerialization(node);
clientConfig.setSerializationConfig(serializationConfig);
}
private void handleProxyFactories(Node node) throws Exception {
for (Node child : childElements(node)) {
String nodeName = cleanNodeName(child);
if ("proxy-factory".equals(nodeName)) {
handleProxyFactory(child);
}
}
}
private void handleProxyFactory(Node node) throws Exception {
String service = getAttribute(node, "service");
String className = getAttribute(node, "class-name");
ProxyFactoryConfig proxyFactoryConfig = new ProxyFactoryConfig(className, service);
clientConfig.addProxyFactoryConfig(proxyFactoryConfig);
}
private void handleSocketInterceptorConfig(Node node, ClientNetworkConfig clientNetworkConfig) {
SocketInterceptorConfig socketInterceptorConfig = parseSocketInterceptorConfig(node);
clientNetworkConfig.setSocketInterceptorConfig(socketInterceptorConfig);
}
private void handleSecurity(Node node) throws Exception {
ClientSecurityConfig clientSecurityConfig = new ClientSecurityConfig();
for (Node child : childElements(node)) {
String nodeName = cleanNodeName(child);
if ("credentials".equals(nodeName)) {
String className = getTextContent(child);
clientSecurityConfig.setCredentialsClassname(className);
}
}
clientConfig.setSecurityConfig(clientSecurityConfig);
}
}
