Re: corrupt disk io storage factory for testing.

[Suresh Thalamati]

Thanks for the suggestion. I agree Proxy is better way to do this.   I 
am getting an  assertion failure when I try to
create database with a proxy storage factory.  Am I  missing some 
property  or  is it a problem ?

java 
-Dderby.subSubProtocol.csf=org.apache.derbyTesting.functionTests.util.corruptio.CorruptDiskStorageFactory 
org.apache.derby.tools.ij
ij> connect 'jdbc:derby:csf:wombat1;create=true';
ERROR XJ001: Java exception: 'ASSERT FAILED mismatched canonical names 
csf:C:\suresht\databases\wombat1 != C:\suresht\databases\wombat1: 
org.apache.derby.iapi.s
ervices.sanity.AssertFailure'.

Stack :
============= begin nested exception, level (1) ===========
org.apache.derby.iapi.services.sanity.AssertFailure: ASSERT FAILED 
mismatched canonical names csf:C:\suresht\databases\wombat1 != 
C:\suresht\databases\wombat1
       at 
org.apache.derby.iapi.services.sanity.SanityManager.ASSERT(SanityManager.java:121)
       at 
org.apache.derby.impl.services.monitor.BaseMonitor.bootService(BaseMonitor.java:1773)
       at 
org.apache.derby.impl.services.monitor.BaseMonitor.createPersistentService(BaseMonitor.java:1018)
       at 
org.apache.derby.iapi.services.monitor.Monitor.createPersistentService(Monitor.java:578)
       at 
org.apache.derby.impl.jdbc.EmbedConnection.createDatabase(EmbedConnection.java:1509)
       at 
org.apache.derby.impl.jdbc.EmbedConnection.<init>(EmbedConnection.java:220)
       at 
org.apache.derby.impl.jdbc.EmbedConnection30.<init>(EmbedConnection30.java:72)
       at 
org.apache.derby.jdbc.Driver30.getNewEmbedConnection(Driver30.java:73)
       at 
org.apache.derby.jdbc.InternalDriver.connect(InternalDriver.java:183)
       at java.sql.DriverManager.getConnection(DriverManager.java:512)
       at java.sql.DriverManager.getConnection(DriverManager.java:140)
       at org.apache.derby.impl.tools.ij.ij.dynamicConnection(ij.java:838)
       at org.apache.derby.impl.tools.ij.ij.ConnectStatement(ij.java:700)
       at org.apache.derby.impl.tools.ij.ij.ijStatement(ij.java:528)
       at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:289)
       at org.apache.derby.impl.tools.ij.Main.go(Main.java:209)
       at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:175)
       at org.apache.derby.impl.tools.ij.Main14.main(Main14.java:55)
       at org.apache.derby.tools.ij.main(ij.java:60)
============= end nested exception, level (1) ===========
Cleanup action completed

Thanks
-suresht
Daniel John Debrunner wrote:
Suresh Thalamati wrote:
 

Hi,
I  am looking at  creating a new corruptible storage factory by
extending the engine's disk storage factory.
Purpose of this is to do explicitly corrupt the  IO and do some
recovery testing.  Thought ideal place
for the corruptible storage factory is to be in the test code utilities
not in the code line.  But  I ran into a simple obstacle ,
constructors in the  org.apache.derby.impl.io.DirFile etc are package
protected. So I am  unable to extend the disk storage
factory classes successfully .
   

Why not make a proxy storage factory that delegates to another storage
factory, but performs any corruptions you require? Then the corruption
testing would be independent of the underlying storage and not tied to
the current disk implementation.
Dan.