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/**
* Copyright Microsoft Corporation
*
* 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.microsoft.azure.storage;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.List;
import java.util.Stack;
import java.util.StringTokenizer;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import com.microsoft.azure.storage.core.SR;
import com.microsoft.azure.storage.core.Utility;
/**
* RESERVED FOR INTERNAL USE. A class used to deserialize a service properties.
*/
final class ServicePropertiesHandler extends DefaultHandler {
private final Stack elementStack = new Stack();
private StringBuilder bld = new StringBuilder();
private final ServiceProperties props = new ServiceProperties();
private CorsRule rule = new CorsRule();
private boolean retentionPolicyEnabled;
private int retentionPolicyDays;
/**
* Parses the {@link ServiceProperties} from the given XML stream.
*
* @param stream
* @throws IOException
* @throws SAXException
* @throws ParserConfigurationException
*/
public static ServiceProperties readServicePropertiesFromStream(final InputStream stream) throws SAXException,
IOException, ParserConfigurationException {
SAXParser saxParser = Utility.getSAXParser();
ServicePropertiesHandler handler = new ServicePropertiesHandler();
handler.props.setLogging(null);
handler.props.setHourMetrics(null);
handler.props.setMinuteMetrics(null);
handler.props.setCors(null);
handler.props.setDeleteRetentionPolicy(null);
handler.props.setStaticWebsiteProperties(null);
saxParser.parse(stream, handler);
return handler.props;
}
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
this.elementStack.push(localName);
if (Constants.AnalyticsConstants.CORS_RULE_ELEMENT.equals(localName)) {
this.rule = new CorsRule();
}
else if (Constants.AnalyticsConstants.LOGGING_ELEMENT.equals(localName)) {
this.props.setLogging(new LoggingProperties());
}
else if (Constants.AnalyticsConstants.HOUR_METRICS_ELEMENT.equals(localName)) {
this.props.setHourMetrics(new MetricsProperties());
}
else if (Constants.AnalyticsConstants.MINUTE_METRICS_ELEMENT.equals(localName)) {
this.props.setMinuteMetrics(new MetricsProperties());
}
else if (Constants.AnalyticsConstants.CORS_ELEMENT.equals(localName)) {
this.props.setCors(new CorsProperties());
}
else if (Constants.AnalyticsConstants.DELETE_RETENTION_POLICY_ELEMENT.equals(localName)) {
this.props.setDeleteRetentionPolicy(new DeleteRetentionPolicy());
}
else if (Constants.AnalyticsConstants.STATIC_WEBSITE_ELEMENT.equals(localName)) {
this.props.setStaticWebsiteProperties(new StaticWebsiteProperties());
}
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
String currentNode = this.elementStack.pop();
// if the node popped from the stack and the localName don't match, the xml document is improperly formatted
if (!localName.equals(currentNode)) {
throw new SAXException(SR.INVALID_RESPONSE_RECEIVED);
}
String parentNode = null;
if (!this.elementStack.isEmpty()) {
parentNode = this.elementStack.peek();
}
String value = this.bld.toString();
if (value.isEmpty()) {
value = null;
}
if (this.retentionPolicyEnabled && Constants.AnalyticsConstants.RETENTION_POLICY_ELEMENT.equals(currentNode)) {
if (Constants.AnalyticsConstants.LOGGING_ELEMENT.equals(parentNode)) {
this.props.getLogging().setRetentionIntervalInDays(this.retentionPolicyDays);
}
else if (Constants.AnalyticsConstants.HOUR_METRICS_ELEMENT.equals(parentNode)) {
this.props.getHourMetrics().setRetentionIntervalInDays(this.retentionPolicyDays);
}
else if (Constants.AnalyticsConstants.MINUTE_METRICS_ELEMENT.equals(parentNode)) {
this.props.getMinuteMetrics().setRetentionIntervalInDays(this.retentionPolicyDays);
}
}
else if (Constants.AnalyticsConstants.CORS_RULE_ELEMENT.equals(currentNode)) {
this.props.getCors().getCorsRules().add(this.rule);
}
else if (Constants.AnalyticsConstants.RETENTION_POLICY_ELEMENT.equals(parentNode)) {
if (Constants.AnalyticsConstants.DAYS_ELEMENT.equals(currentNode)) {
this.retentionPolicyDays = Integer.parseInt(value);
}
else if (Constants.AnalyticsConstants.ENABLED_ELEMENT.equals(currentNode)) {
this.retentionPolicyEnabled = Boolean.parseBoolean(value);
}
}
else if (Constants.AnalyticsConstants.LOGGING_ELEMENT.equals(parentNode)) {
if (Constants.AnalyticsConstants.VERSION_ELEMENT.equals(currentNode)) {
this.props.getLogging().setVersion(value);
}
else if (Constants.AnalyticsConstants.DELETE_ELEMENT.equals(currentNode)) {
if (Boolean.parseBoolean(value)) {
this.props.getLogging().getLogOperationTypes().add(LoggingOperations.DELETE);
}
}
else if (Constants.AnalyticsConstants.READ_ELEMENT.equals(currentNode)) {
if (Boolean.parseBoolean(value)) {
this.props.getLogging().getLogOperationTypes().add(LoggingOperations.READ);
}
}
else if (Constants.AnalyticsConstants.WRITE_ELEMENT.equals(currentNode)) {
if (Boolean.parseBoolean(value)) {
this.props.getLogging().getLogOperationTypes().add(LoggingOperations.WRITE);
}
}
}
else if (Constants.AnalyticsConstants.HOUR_METRICS_ELEMENT.equals(parentNode)) {
MetricsProperties metrics = this.props.getHourMetrics();
if (Constants.AnalyticsConstants.VERSION_ELEMENT.equals(currentNode)) {
metrics.setVersion(value);
}
else if (Constants.AnalyticsConstants.ENABLED_ELEMENT.equals(currentNode)) {
if (Boolean.parseBoolean(value)) {
metrics.setMetricsLevel(metrics.getMetricsLevel() != MetricsLevel.SERVICE_AND_API ? MetricsLevel.SERVICE
: MetricsLevel.SERVICE_AND_API);
}
}
else if (Constants.AnalyticsConstants.INCLUDE_APIS_ELEMENT.equals(currentNode)) {
if (Boolean.parseBoolean(value) && metrics.getMetricsLevel() != MetricsLevel.DISABLED) {
metrics.setMetricsLevel(MetricsLevel.SERVICE_AND_API);
}
}
}
else if (Constants.AnalyticsConstants.MINUTE_METRICS_ELEMENT.equals(parentNode)) {
MetricsProperties metrics = this.props.getMinuteMetrics();
if (Constants.AnalyticsConstants.VERSION_ELEMENT.equals(currentNode)) {
metrics.setVersion(value);
}
else if (Constants.AnalyticsConstants.ENABLED_ELEMENT.equals(currentNode)) {
if (Boolean.parseBoolean(value)) {
metrics.setMetricsLevel(metrics.getMetricsLevel() != MetricsLevel.SERVICE_AND_API ? MetricsLevel.SERVICE
: MetricsLevel.SERVICE_AND_API);
}
}
else if (Constants.AnalyticsConstants.INCLUDE_APIS_ELEMENT.equals(currentNode)) {
if (Boolean.parseBoolean(value) && metrics.getMetricsLevel() != MetricsLevel.DISABLED) {
metrics.setMetricsLevel(MetricsLevel.SERVICE_AND_API);
}
}
}
else if (Constants.AnalyticsConstants.DEFAULT_SERVICE_VERSION.equals(currentNode)) {
this.props.setDefaultServiceVersion(value);
}
else if (Constants.AnalyticsConstants.CORS_RULE_ELEMENT.equals(parentNode)) {
if (Constants.AnalyticsConstants.ALLOWED_ORIGINS_ELEMENT.equals(currentNode)) {
if (value != null) {
this.rule.setAllowedOrigins(splitToList(value, ","));
}
}
else if (Constants.AnalyticsConstants.ALLOWED_METHODS_ELEMENT.equals(currentNode)) {
if (value != null) {
this.rule.setAllowedMethods(splitToEnumSet(value, ","));
}
}
else if (Constants.AnalyticsConstants.EXPOSED_HEADERS_ELEMENT.equals(currentNode)) {
if (value != null) {
this.rule.setExposedHeaders(splitToList(value, ","));
}
}
else if (Constants.AnalyticsConstants.ALLOWED_HEADERS_ELEMENT.equals(currentNode)) {
if (value != null) {
this.rule.setAllowedHeaders(splitToList(value, ","));
}
}
else if (Constants.AnalyticsConstants.MAX_AGE_IN_SECONDS_ELEMENT.equals(currentNode)) {
this.rule.setMaxAgeInSeconds(Integer.parseInt(value));
}
}
else if (Constants.AnalyticsConstants.DELETE_RETENTION_POLICY_ELEMENT.equals(parentNode)) {
if (Constants.AnalyticsConstants.ENABLED_ELEMENT.equals(currentNode)) {
if (value != null) {
boolean enabled = Boolean.parseBoolean(value);
if (enabled) {
this.props.getDeleteRetentionPolicy().setEnabled(true);
}
else {
this.props.getDeleteRetentionPolicy().setEnabled(false);
}
}
}
else if (Constants.AnalyticsConstants.DAYS_ELEMENT.equals(currentNode)) {
if (value != null) {
this.props.getDeleteRetentionPolicy().setRetentionIntervalInDays(Integer.parseInt(value));
}
}
}
else if (Constants.AnalyticsConstants.STATIC_WEBSITE_ELEMENT.equals(parentNode)) {
if (Constants.AnalyticsConstants.ENABLED_ELEMENT.equals(currentNode)) {
if (value != null) {
this.props.getStaticWebsiteProperties().setEnabled(Boolean.parseBoolean(value));
}
}
else if (Constants.AnalyticsConstants.STATIC_WEBSITE_INDEX_DOCUMENT_ELEMENT.equals(currentNode)) {
if (value != null) {
this.props.getStaticWebsiteProperties().setIndexDocument(value);
}
}
else if (Constants.AnalyticsConstants.STATIC_WEBSITE_ERROR_DOCUMENT_404_PATH_ELEMENT.equals(currentNode)) {
if (value != null) {
this.props.getStaticWebsiteProperties().setErrorDocument404Path(value);
}
}
}
this.bld = new StringBuilder();
}
@Override
public void characters(char ch[], int start, int length) throws SAXException {
this.bld.append(ch, start, length);
}
/**
* Split a delimiter separated string into an ArrayList
*
* @param str
* the string to split
* @param delimiter
* the character to split on
* @return the list of strings
*/
private static List splitToList(String str, String delimiter) {
ArrayList list = new ArrayList();
StringTokenizer st = new StringTokenizer(str, delimiter);
while (st.hasMoreElements()) {
list.add(st.nextToken());
}
return list;
}
/**
* Split a delimiter separated string into a EnumSet of CorsHttpMethods
*
* @param str
* the string to split
* @param delimiter
* the character to split on
* @return the set of CorsHttpMethods
*/
private static EnumSet splitToEnumSet(String str, String delimiter) {
EnumSet set = EnumSet.noneOf(CorsHttpMethods.class);
StringTokenizer st = new StringTokenizer(str, delimiter);
while (st.hasMoreElements()) {
set.add(CorsHttpMethods.valueOf(st.nextToken()));
}
return set;
}
}
