/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.jclouds.azureblob.xml;
import static com.google.common.io.BaseEncoding.base64;
import static org.jclouds.http.Uris.uriBuilder;
import java.net.URI;
import java.util.Date;
import java.util.Map;
import java.util.Set;
import javax.inject.Inject;
import org.jclouds.azureblob.domain.BlobProperties;
import org.jclouds.azureblob.domain.BlobType;
import org.jclouds.azureblob.domain.LeaseStatus;
import org.jclouds.azureblob.domain.ListBlobsResponse;
import org.jclouds.azureblob.domain.internal.BlobPropertiesImpl;
import org.jclouds.azureblob.domain.internal.HashSetListBlobsResponse;
import org.jclouds.date.DateService;
import org.jclouds.http.functions.ParseSax;
import org.jclouds.io.ContentMetadataCodec;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
/**
* Parses the following XML document:
* <p/>
* EnumerationResults ContainerName="http://myaccount.blob.core.windows.net/mycontainer"
*
* @see <a href="http://msdn.microsoft.com/en-us/library/dd135734.aspx#samplerequestandresponse" />
*/
public class ContainerNameEnumerationResultsHandler extends ParseSax.HandlerWithResult<ListBlobsResponse> {
private Set<BlobProperties> blobMetadata = Sets.newLinkedHashSet();
private String prefix;
private String marker;
private int maxResults;
private String nextMarker;
private URI currentUrl;
private URI containerUrl;
private Date currentLastModified;
private String currentETag;
private StringBuilder currentText = new StringBuilder();
private final DateService dateParser;
private final ContentMetadataCodec contentMetadataCodec;
private String delimiter;
private String currentName;
private long currentSize;
private String currentContentType;
private String currentContentEncoding;
private String currentContentLanguage;
private BlobType currentBlobType;
private Date currentExpires;
private boolean inBlob;
private boolean inBlobPrefix;
private boolean inMetadata;
private Set<String> blobPrefixes = Sets.newHashSet();
private byte[] currentContentMD5;
private Map<String, String> currentMetadata = Maps.newHashMap();
private LeaseStatus currentLeaseStatus;
@Inject
public ContainerNameEnumerationResultsHandler(DateService dateParser, ContentMetadataCodec contentMetadataCodec) {
this.dateParser = dateParser;
this.contentMetadataCodec = contentMetadataCodec;
}
public ListBlobsResponse getResult() {
return new HashSetListBlobsResponse(blobMetadata, containerUrl, prefix, marker, maxResults, nextMarker,
delimiter, blobPrefixes);
}
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
if (qName.equals("Blob")) {
inBlob = true;
inBlobPrefix = false;
inMetadata = false;
} else if (qName.equals("BlobPrefix")) {
inBlob = false;
inBlobPrefix = true;
} else if (qName.equals("Metadata")) {
inBlob = true;
inMetadata = true;
} else if (qName.equals("EnumerationResults")) {
containerUrl = URI.create(attributes.getValue("ContainerName").toString().trim());
}
}
public void endElement(String uri, String name, String qName) {
if (inMetadata && !qName.equals("Metadata")) {
currentMetadata.put(qName, currentText.toString().trim());
} else if (qName.equals("Metadata")) {
inMetadata = false;
} else if (qName.equals("MaxResults")) {
maxResults = Integer.parseInt(currentText.toString().trim());
} else if (qName.equals("Marker")) {
marker = currentText.toString().trim();
marker = (marker.equals("")) ? null : marker;
} else if (qName.equals("Prefix")) {
prefix = currentText.toString().trim();
prefix = (prefix.equals("")) ? null : prefix;
} else if (qName.equals("Delimiter")) {
delimiter = currentText.toString().trim();
delimiter = (delimiter.equals("")) ? null : delimiter;
} else if (qName.equals("NextMarker")) {
nextMarker = currentText.toString().trim();
nextMarker = (nextMarker.equals("")) ? null : nextMarker;
} else if (qName.equals("BlobType")) {
currentBlobType = BlobType.fromValue(currentText.toString().trim());
} else if (qName.equals("LeaseStatus")) {
currentLeaseStatus = LeaseStatus.fromValue(currentText.toString().trim());
} else if (qName.equals("Blob")) {
BlobProperties md = new BlobPropertiesImpl(currentBlobType, currentName, containerUrl.getPath().replace("/",
""), currentUrl, currentLastModified, currentETag, currentSize, currentContentType,
currentContentMD5, currentContentEncoding, currentContentLanguage, currentExpires,
currentLeaseStatus, currentMetadata);
blobMetadata.add(md);
currentBlobType = null;
currentName = null;
currentUrl = null;
currentLastModified = null;
currentETag = null;
currentSize = -1;
currentContentType = null;
currentContentEncoding = null;
currentContentLanguage = null;
currentContentMD5 = null;
currentLeaseStatus = null;
currentExpires = null;
currentMetadata = Maps.newHashMap();
} else if (qName.equals("Url")) {
currentUrl = uriBuilder(currentText.toString().trim()).build();
} else if (qName.equals("Last-Modified")) {
currentLastModified = dateParser.rfc822DateParse(currentText.toString().trim());
} else if (qName.equals("Etag")) {
currentETag = currentText.toString().trim();
} else if (qName.equals("Name")) {
if (inBlob)
currentName = currentText.toString().trim();
else if (inBlobPrefix)
blobPrefixes.add(currentText.toString().trim());
} else if (qName.equals("Content-Length")) {
currentSize = Long.parseLong(currentText.toString().trim());
} else if (qName.equals("Content-MD5")) {
if (!currentText.toString().trim().equals(""))
currentContentMD5 = base64().decode(currentText.toString().trim());
} else if (qName.equals("Content-Type")) {
currentContentType = currentText.toString().trim();
} else if (qName.equals("Content-Encoding")) {
currentContentEncoding = currentText.toString().trim();
if (currentContentEncoding.equals(""))
currentContentEncoding = null;
} else if (qName.equals("Content-Language")) {
currentContentLanguage = currentText.toString().trim();
if (currentContentLanguage.equals(""))
currentContentLanguage = null;
} else if (qName.equals("Expires")) {
String trimmedCurrentText = currentText.toString().trim();
if (trimmedCurrentText.equals("")) {
currentExpires = null;
} else {
currentExpires = contentMetadataCodec.parseExpires(trimmedCurrentText);
}
}
currentText = new StringBuilder();
}
public void characters(char ch[], int start, int length) {
currentText.append(ch, start, length);
}
}