org.apache.lucene.store
Class MockDirectoryWrapper

java.lang.Object
  extended by org.apache.lucene.store.Directory
      extended by org.apache.lucene.store.MockDirectoryWrapper
All Implemented Interfaces:
Closeable

public class MockDirectoryWrapper
extends Directory

This is a Directory Wrapper that adds methods intended to be used only by unit tests. It also adds a number of features useful for testing:


Nested Class Summary
static class MockDirectoryWrapper.Failure
          Objects that represent fail-able conditions.
static class MockDirectoryWrapper.Throttling
           
 
Nested classes/interfaces inherited from class org.apache.lucene.store.Directory
Directory.IndexInputSlicer
 
Field Summary
 
Fields inherited from class org.apache.lucene.store.Directory
isOpen, lockFactory
 
Constructor Summary
MockDirectoryWrapper(Random random, Directory delegate)
           
 
Method Summary
 void clearCrash()
           
 void clearLock(String name)
           
 void close()
           
 void copy(Directory to, String src, String dest, IOContext context)
           
 void crash()
          Simulates a crash of OS or machine by overwriting unsynced files.
 IndexOutput createOutput(String name, IOContext context)
           
 Directory.IndexInputSlicer createSlicer(String name, IOContext context)
           
 void deleteFile(String name)
           
 void failOn(MockDirectoryWrapper.Failure fail)
          add a Failure object to the list of objects to be evaluated at every potential failure point
 boolean fileExists(String name)
           
 long fileLength(String name)
           
 boolean getCheckIndexOnClose()
           
 boolean getCrossCheckTermVectorsOnClose()
           
 int getInputCloneCount()
           
 LockFactory getLockFactory()
           
 String getLockID()
           
 long getMaxSizeInBytes()
           
 long getMaxUsedSizeInBytes()
          Returns the peek actual storage used (bytes) in this directory.
 boolean getNoDeleteOpenFile()
           
 Set<String> getOpenDeletedFiles()
           
 double getRandomIOExceptionRate()
           
 long getRecomputedActualSizeInBytes()
          Like getRecomputedSizeInBytes(), but, uses actual file lengths rather than buffer allocations (which are quantized up to nearest RAMOutputStream.BUFFER_SIZE (now 1024) bytes.
 long getRecomputedSizeInBytes()
          Provided for testing purposes.
 boolean isOpen()
           
 String[] listAll()
           
 Lock makeLock(String name)
           
 IndexInput openInput(String name, IOContext context)
           
 void removeIndexInput(IndexInput in, String name)
           
 void removeIndexOutput(IndexOutput out, String name)
           
 void resetMaxUsedSizeInBytes()
           
 void setAssertNoUnrefencedFilesOnClose(boolean v)
           
 void setCheckIndexOnClose(boolean value)
          Set whether or not checkindex should be run on close
 void setCrossCheckTermVectorsOnClose(boolean value)
           
 void setFailOnCreateOutput(boolean v)
           
 void setFailOnOpenInput(boolean v)
           
 void setLockFactory(LockFactory lockFactory)
           
 void setMaxSizeInBytes(long maxSize)
           
 void setNoDeleteOpenFile(boolean value)
          Emulate windows whereby deleting an open file is not allowed (raise IOException).
 void setPreventDoubleWrite(boolean value)
          If set to true, we throw an IOException if the same file is opened by createOutput, ever.
 void setRandomIOExceptionRate(double rate)
          If 0.0, no exceptions will be thrown.
 void setThrottling(MockDirectoryWrapper.Throttling throttling)
           
 void setTrackDiskUsage(boolean v)
           
 long sizeInBytes()
           
 void sync(Collection<String> names)
           
 String toString()
           
 
Methods inherited from class org.apache.lucene.store.Directory
ensureOpen
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

MockDirectoryWrapper

public MockDirectoryWrapper(Random random,
                            Directory delegate)
Method Detail

getInputCloneCount

public int getInputCloneCount()

setTrackDiskUsage

public void setTrackDiskUsage(boolean v)

setPreventDoubleWrite

public void setPreventDoubleWrite(boolean value)
If set to true, we throw an IOException if the same file is opened by createOutput, ever.


setThrottling

public void setThrottling(MockDirectoryWrapper.Throttling throttling)

sync

public void sync(Collection<String> names)
          throws IOException
Specified by:
sync in class Directory
Throws:
IOException

toString

public String toString()
Overrides:
toString in class Directory

sizeInBytes

public final long sizeInBytes()
                       throws IOException
Throws:
IOException

crash

public void crash()
           throws IOException
Simulates a crash of OS or machine by overwriting unsynced files.

Throws:
IOException

clearCrash

public void clearCrash()
                throws IOException
Throws:
IOException

setMaxSizeInBytes

public void setMaxSizeInBytes(long maxSize)

getMaxSizeInBytes

public long getMaxSizeInBytes()

getMaxUsedSizeInBytes

public long getMaxUsedSizeInBytes()
Returns the peek actual storage used (bytes) in this directory.


resetMaxUsedSizeInBytes

public void resetMaxUsedSizeInBytes()
                             throws IOException
Throws:
IOException

setNoDeleteOpenFile

public void setNoDeleteOpenFile(boolean value)
Emulate windows whereby deleting an open file is not allowed (raise IOException).


getNoDeleteOpenFile

public boolean getNoDeleteOpenFile()

setCheckIndexOnClose

public void setCheckIndexOnClose(boolean value)
Set whether or not checkindex should be run on close


getCheckIndexOnClose

public boolean getCheckIndexOnClose()

setCrossCheckTermVectorsOnClose

public void setCrossCheckTermVectorsOnClose(boolean value)

getCrossCheckTermVectorsOnClose

public boolean getCrossCheckTermVectorsOnClose()

setRandomIOExceptionRate

public void setRandomIOExceptionRate(double rate)
If 0.0, no exceptions will be thrown. Else this should be a double 0.0 - 1.0. We will randomly throw an IOException on the first write to an OutputStream based on this probability.


getRandomIOExceptionRate

public double getRandomIOExceptionRate()

deleteFile

public void deleteFile(String name)
                throws IOException
Specified by:
deleteFile in class Directory
Throws:
IOException

getOpenDeletedFiles

public Set<String> getOpenDeletedFiles()

setFailOnCreateOutput

public void setFailOnCreateOutput(boolean v)

createOutput

public IndexOutput createOutput(String name,
                                IOContext context)
                         throws IOException
Specified by:
createOutput in class Directory
Throws:
IOException

setFailOnOpenInput

public void setFailOnOpenInput(boolean v)

openInput

public IndexInput openInput(String name,
                            IOContext context)
                     throws IOException
Specified by:
openInput in class Directory
Throws:
IOException

getRecomputedSizeInBytes

public final long getRecomputedSizeInBytes()
                                    throws IOException
Provided for testing purposes. Use sizeInBytes() instead.

Throws:
IOException

getRecomputedActualSizeInBytes

public final long getRecomputedActualSizeInBytes()
                                          throws IOException
Like getRecomputedSizeInBytes(), but, uses actual file lengths rather than buffer allocations (which are quantized up to nearest RAMOutputStream.BUFFER_SIZE (now 1024) bytes.

Throws:
IOException

setAssertNoUnrefencedFilesOnClose

public void setAssertNoUnrefencedFilesOnClose(boolean v)

close

public void close()
           throws IOException
Specified by:
close in interface Closeable
Specified by:
close in class Directory
Throws:
IOException

removeIndexOutput

public void removeIndexOutput(IndexOutput out,
                              String name)

removeIndexInput

public void removeIndexInput(IndexInput in,
                             String name)

isOpen

public boolean isOpen()

failOn

public void failOn(MockDirectoryWrapper.Failure fail)
add a Failure object to the list of objects to be evaluated at every potential failure point


listAll

public String[] listAll()
                 throws IOException
Specified by:
listAll in class Directory
Throws:
IOException

fileExists

public boolean fileExists(String name)
                   throws IOException
Specified by:
fileExists in class Directory
Throws:
IOException

fileLength

public long fileLength(String name)
                throws IOException
Specified by:
fileLength in class Directory
Throws:
IOException

makeLock

public Lock makeLock(String name)
Overrides:
makeLock in class Directory

clearLock

public void clearLock(String name)
               throws IOException
Overrides:
clearLock in class Directory
Throws:
IOException

setLockFactory

public void setLockFactory(LockFactory lockFactory)
                    throws IOException
Overrides:
setLockFactory in class Directory
Throws:
IOException

getLockFactory

public LockFactory getLockFactory()
Overrides:
getLockFactory in class Directory

getLockID

public String getLockID()
Overrides:
getLockID in class Directory

copy

public void copy(Directory to,
                 String src,
                 String dest,
                 IOContext context)
          throws IOException
Overrides:
copy in class Directory
Throws:
IOException

createSlicer

public Directory.IndexInputSlicer createSlicer(String name,
                                               IOContext context)
                                        throws IOException
Overrides:
createSlicer in class Directory
Throws:
IOException


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