本文整理汇总了Java中org.apache.hadoop.fs.swift.http.SwiftProtocolConstants.TOPOLOGY_PATH属性的典型用法代码示例。如果您正苦于以下问题：Java SwiftProtocolConstants.TOPOLOGY_PATH属性的具体用法？Java SwiftProtocolConstants.TOPOLOGY_PATH怎么用？Java SwiftProtocolConstants.TOPOLOGY_PATH使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.apache.hadoop.fs.swift.http.SwiftProtocolConstants的用法示例。
在下文中一共展示了SwiftProtocolConstants.TOPOLOGY_PATH属性的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getFileBlockLocations
/**
* Return an array containing hostnames, offset and size of
* portions of the given file. For a nonexistent
* file or regions, null will be returned.
* <p>
* This call is most helpful with DFS, where it returns
* hostnames of machines that contain the given file.
* <p>
* The FileSystem will simply return an elt containing 'localhost'.
*/
@Override
public BlockLocation[] getFileBlockLocations(FileStatus file,
long start,
long len) throws IOException {
//argument checks
if (file == null) {
return null;
}
if (start < 0 || len < 0) {
throw new IllegalArgumentException("Negative start or len parameter" +
" to getFileBlockLocations");
}
if (file.getLen() <= start) {
return new BlockLocation[0];
}
// Check if requested file in Swift is more than 5Gb. In this case
// each block has its own location -which may be determinable
// from the Swift client API, depending on the remote server
final FileStatus[] listOfFileBlocks = store.listSubPaths(file.getPath(),
false,
true);
List<URI> locations = new ArrayList<URI>();
if (listOfFileBlocks.length > 1) {
for (FileStatus fileStatus : listOfFileBlocks) {
if (SwiftObjectPath.fromPath(uri, fileStatus.getPath())
.equals(SwiftObjectPath.fromPath(uri, file.getPath()))) {
continue;
}
locations.addAll(store.getObjectLocation(fileStatus.getPath()));
}
} else {
locations = store.getObjectLocation(file.getPath());
}
if (locations.isEmpty()) {
LOG.debug("No locations returned for " + file.getPath());
//no locations were returned for the object
//fall back to the superclass
String[] name = {SwiftProtocolConstants.BLOCK_LOCATION};
String[] host = { "localhost" };
String[] topology={SwiftProtocolConstants.TOPOLOGY_PATH};
return new BlockLocation[] {
new BlockLocation(name, host, topology,0, file.getLen())
};
}
final String[] names = new String[locations.size()];
final String[] hosts = new String[locations.size()];
int i = 0;
for (URI location : locations) {
hosts[i] = location.getHost();
names[i] = location.getAuthority();
i++;
}
return new BlockLocation[]{
new BlockLocation(names, hosts, 0, file.getLen())
};
}
示例2: getFileBlockLocations
/**
* Return an array containing hostnames, offset and size of
* portions of the given file. For a nonexistent
* file or regions, null will be returned.
* <p/>
* This call is most helpful with DFS, where it returns
* hostnames of machines that contain the given file.
* <p/>
* The FileSystem will simply return an elt containing 'localhost'.
*/
@Override
public BlockLocation[] getFileBlockLocations(FileStatus file,
long start,
long len) throws IOException {
//argument checks
if (file == null) {
return null;
}
if (start < 0 || len < 0) {
throw new IllegalArgumentException("Negative start or len parameter" +
" to getFileBlockLocations");
}
if (file.getLen() <= start) {
return new BlockLocation[0];
}
// Check if requested file in Swift is more than 5Gb. In this case
// each block has its own location -which may be determinable
// from the Swift client API, depending on the remote server
final FileStatus[] listOfFileBlocks = store.listSubPaths(file.getPath(),
false,
true);
List<URI> locations = new ArrayList<URI>();
if (listOfFileBlocks.length > 1) {
for (FileStatus fileStatus : listOfFileBlocks) {
if (SwiftObjectPath.fromPath(uri, fileStatus.getPath())
.equals(SwiftObjectPath.fromPath(uri, file.getPath()))) {
continue;
}
locations.addAll(store.getObjectLocation(fileStatus.getPath()));
}
} else {
locations = store.getObjectLocation(file.getPath());
}
if (locations.isEmpty()) {
LOG.debug("No locations returned for " + file.getPath());
//no locations were returned for the object
//fall back to the superclass
String[] name = {SwiftProtocolConstants.BLOCK_LOCATION};
String[] host = { "localhost" };
String[] topology={SwiftProtocolConstants.TOPOLOGY_PATH};
return new BlockLocation[] {
new BlockLocation(name, host, topology,0, file.getLen())
};
}
final String[] names = new String[locations.size()];
final String[] hosts = new String[locations.size()];
int i = 0;
for (URI location : locations) {
hosts[i] = location.getHost();
names[i] = location.getAuthority();
i++;
}
return new BlockLocation[]{
new BlockLocation(names, hosts, 0, file.getLen())
};
}
示例3: getFileBlockLocations
/**
* Return an array containing hostnames, offset and size of
* portions of the given file. For a nonexistent
* file or regions, null will be returned.
* <p/>
* This call is most helpful with DFS, where it returns
* hostnames of machines that contain the given file.
* <p/>
* The FileSystem will simply return an elt containing 'localhost'.
*/
@Override
public BlockLocation[] getFileBlockLocations(FileStatus file,
long start,
long len) throws IOException {
//argument checks
if (file == null) {
return null;
}
if (file.isDir()) {
return new BlockLocation[0];
}
if (start < 0 || len < 0) {
throw new IllegalArgumentException("Negative start or len parameter" +
" to getFileBlockLocations");
}
if (file.getLen() <= start) {
return new BlockLocation[0];
}
// Check if requested file in Swift is more than 5Gb. In this case
// each block has its own location -which may be determinable
// from the Swift client API, depending on the remote server
final FileStatus[] listOfFileBlocks;
if (file instanceof SwiftFileStatus && ((SwiftFileStatus)file).isDLO()) {
listOfFileBlocks = store.listSegments(file, true);
} else {
listOfFileBlocks = null;
}
List<URI> locations = new ArrayList<URI>();
if (listOfFileBlocks != null && listOfFileBlocks.length > 1) {
for (FileStatus fileStatus : listOfFileBlocks) {
if (SwiftObjectPath.fromPath(uri, fileStatus.getPath())
.equals(SwiftObjectPath.fromPath(uri, file.getPath()))) {
continue;
}
locations.addAll(store.getObjectLocation(fileStatus.getPath()));
}
} else {
locations = store.getObjectLocation(file.getPath());
}
if (locations.isEmpty()) {
LOG.debug("No locations returned for " + file.getPath());
//no locations were returned for the object
//fall back to the superclass
String[] name = {SwiftProtocolConstants.BLOCK_LOCATION};
String[] host = { "localhost" };
String[] topology={SwiftProtocolConstants.TOPOLOGY_PATH};
return new BlockLocation[] {
new BlockLocation(name, host, topology,0, file.getLen())
};
}
final String[] names = new String[locations.size()];
final String[] hosts = new String[locations.size()];
int i = 0;
for (URI location : locations) {
hosts[i] = location.getHost();
names[i] = location.getAuthority();
i++;
}
return new BlockLocation[]{
new BlockLocation(names, hosts, 0, file.getLen())
};
}