Package org.apache.hadoop.fs.http.server

Class FSOperations.FSGetSnapshotDiffListing

java.lang.Object

org.apache.hadoop.fs.http.server.FSOperations.FSGetSnapshotDiffListing

All Implemented Interfaces:

FileSystemAccess.FileSystemExecutor<java.lang.String>

Enclosing class:

FSOperations

@Private
public static class FSOperations.FSGetSnapshotDiffListing
extends java.lang.Object
implements FileSystemAccess.FileSystemExecutor<java.lang.String>

Executor that performs a getSnapshotDiffListing operation.

Constructor Summary

Constructors

Constructor	Description
FSGetSnapshotDiffListing(java.lang.String path, java.lang.String oldSnapshotName, java.lang.String snapshotName, java.lang.String snapshotDiffStartPath, int snapshotDiffIndex)	Creates a getSnapshotDiffListing executor.

Method Summary

Modifier and Type	Method	Description
java.lang.String	execute(org.apache.hadoop.fs.FileSystem fs)	Executes the filesystem operation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FSGetSnapshotDiffListing

public FSGetSnapshotDiffListing(java.lang.String path,
                                java.lang.String oldSnapshotName,
                                java.lang.String snapshotName,
                                java.lang.String snapshotDiffStartPath,
                                int snapshotDiffIndex)

Creates a getSnapshotDiffListing executor.

Parameters:

path - directory path of the snapshots to be examined.

oldSnapshotName - Older snapshot name.

snapshotName - Newer snapshot name.

snapshotDiffStartPath - snapshot diff start path.

snapshotDiffIndex - snapshot diff index.

Method Detail

execute

public java.lang.String execute(org.apache.hadoop.fs.FileSystem fs)
                         throws java.io.IOException

Executes the filesystem operation.

Specified by:

execute in interface FileSystemAccess.FileSystemExecutor<java.lang.String>

Parameters:

fs - filesystem instance to use.

Returns:

A serialized JSON string of snapshot diffs.

Throws:

java.io.IOException - thrown if an IO error occurred.