OPENDJ-1602 New pluggable storage based backend

Jean-Noel Rouvignac

19.34.2014 8f4a04835eaa5c44c22116f8f5fde5ad75fa8142

OPENDJ-1602 New pluggable storage based backend

Reenabled JECompressedSchema.
All code compiles now, but still no checkstyle.


JECompressedSchema.java:
Fixed compile errors.

RootContainer.java:
Switched back from DefaultCompressedSchema to JECompressedSchema.

build.xml:
Included JECompressedSchema in the compile phase.

 opendj3-server-dev/build.xml

@@ -760,7 +760,6 @@
    <mkdir dir="${build.lib.dir}" />

    <javac srcdir="${src.dir}:${admin.src.dir}:${msg.src.dir}:${msg.javagen.dir}:${ads.src.dir}:${quicksetup.src.dir}:${guitools.src.dir}"
         excludes="${pluggablebackend.pkg}/JECompressedSchema.java"
         destdir="${classes.dir}">
      <classpath>
        <fileset refid="opendj.runtime.jars"/>
@@ -1859,7 +1858,6 @@
    <mkdir dir="${classes.dir}" />

    <javac srcdir="${src.dir}:${admin.src.dir}:${msg.src.dir}:${msg.javagen.dir}:${ads.src.dir}:${quicksetup.src.dir}:${guitools.src.dir}"
        excludes="${pluggablebackend.pkg}/JECompressedSchema.java"
        destdir="${classes.dir}">
      <classpath>
        <fileset refid="opendj.runtime.jars"/>

 opendj3-server-dev/src/server/org/opends/server/backends/pluggable/JECompressedSchema.java

@@ -42,10 +42,12 @@
import org.opends.server.backends.pluggable.spi.Cursor;
import org.opends.server.backends.pluggable.spi.Storage;
import org.opends.server.backends.pluggable.spi.StorageRuntimeException;
import org.opends.server.backends.pluggable.spi.TreeName;
import org.opends.server.backends.pluggable.spi.WriteOperation;
import org.opends.server.backends.pluggable.spi.WriteableStorage;
import org.opends.server.core.DirectoryServer;
import org.opends.server.types.DirectoryException;
import org.opends.server.types.InitializationException;
import org.opends.server.util.StaticUtils;

import static org.opends.messages.JebMessages.*;

@@ -62,12 +64,13 @@
  /** The name of the database used to store compressed object class set definitions. */
  private static final String DB_NAME_OC = "compressed_object_classes";

  /** The compressed attribute description schema database. */
  private Database adDatabase;
  /** The compressed attribute description schema tree. */
  private static final TreeName adTreeName = new TreeName("compressed_schema", DB_NAME_AD);
  /** The compressed object class set schema tree. */
  private static final TreeName ocTreeName = new TreeName("compressed_schema", DB_NAME_OC);

  /** The environment in which the databases are held. */
  private Storage environment;
  /** The compressed object class set schema database. */
  private Database ocDatabase;
  private Storage storage;

  private final ByteStringBuilder storeAttributeWriterBuffer = new ByteStringBuilder();
  private final ASN1Writer storeAttributeWriter = ASN1.getWriter(storeAttributeWriterBuffer);
@@ -79,9 +82,10 @@
  /**
   * Creates a new instance of this JE compressed schema manager.
   *
   * @param environment
   * @param storage
   *          A reference to the database environment in which the databases
   *          will be held.
   * @param txn
   * @throws StorageRuntimeException
   *           If a database problem occurs while loading the compressed schema
   *           definitions from the database.
@@ -89,11 +93,11 @@
   *           If an error occurs while loading and processing the compressed
   *           schema definitions.
   */
  public JECompressedSchema(final Storage environment)
  public JECompressedSchema(final Storage storage, WriteableStorage txn)
      throws StorageRuntimeException, InitializationException
  {
    this.environment = environment;
    load();
    this.storage = storage;
    load(txn);
  }


@@ -104,29 +108,12 @@
   */
  public void close()
  {
    close0(adDatabase);
    close0(ocDatabase);
    storage.closeTree(adTreeName);
    storage.closeTree(ocTreeName);

    adDatabase = null;
    ocDatabase = null;
    environment = null;
    storage = null;
  }

  private void close0(Database database)
  {
    try
    {
      database.sync();
    }
    catch (final Exception e)
    {
      // Ignore.
    }
    StaticUtils.close(database);
  }



  /** {@inheritDoc} */
  @Override
  protected void storeAttribute(final byte[] encodedAttribute,
@@ -143,7 +130,7 @@
        storeAttributeWriter.writeOctetString(option);
      }
      storeAttributeWriter.writeEndSequence();
      store(adDatabase, encodedAttribute, storeAttributeWriterBuffer);
      store(adTreeName, encodedAttribute, storeAttributeWriterBuffer);
    }
    catch (final IOException e)
    {
@@ -167,7 +154,7 @@
        storeObjectClassesWriter.writeOctetString(ocName);
      }
      storeObjectClassesWriter.writeEndSequence();
      store(ocDatabase, encodedObjectClasses, storeObjectClassesWriterBuffer);
      store(ocTreeName, encodedObjectClasses, storeObjectClassesWriterBuffer);
    }
    catch (final IOException e)
    {
@@ -186,17 +173,15 @@
   * @throws InitializationException
   *           If an error occurs while loading and processing the definitions.
   */
  private void load() throws StorageRuntimeException, InitializationException
  private void load(WriteableStorage txn) throws StorageRuntimeException, InitializationException
  {
    final DatabaseConfig dbConfig = JEBUtils.toDatabaseConfigNoDuplicates(environment);

    adDatabase = environment.openDatabase(null, DB_NAME_AD, dbConfig);
    ocDatabase = environment.openDatabase(null, DB_NAME_OC, dbConfig);
    txn.openTree(adTreeName);
    txn.openTree(ocTreeName);

    // Cursor through the object class database and load the object class set
    // definitions. At the same time, figure out the highest token value and
    // initialize the object class counter to one greater than that.
    final Cursor ocCursor = ocDatabase.openCursor(null);
    final Cursor ocCursor = txn.openCursor(ocTreeName);
    try
    {
      while (ocCursor.next())
@@ -226,7 +211,7 @@

    // Cursor through the attribute description database and load the attribute
    // set definitions.
    final Cursor adCursor = adDatabase.openCursor(null);
    final Cursor adCursor = txn.openCursor(adTreeName);
    try
    {
      while (adCursor.next())
@@ -256,45 +241,42 @@
    }
  }



  private void store(final Database database, final byte[] key, final ByteStringBuilder value) throws DirectoryException
  private void store(final TreeName treeName, final byte[] key, final ByteStringBuilder value)
      throws DirectoryException
  {
    if (!putNoOverwrite(database, key, value))
    if (!putNoOverwrite(treeName, key, value))
    {
      final LocalizableMessage m = ERR_JEB_COMPSCHEMA_CANNOT_STORE_MULTIPLE_FAILURES.get();
      throw new DirectoryException(DirectoryServer.getServerErrorResultCode(), m);
    }
  }

  private boolean putNoOverwrite(final Database database, final byte[] key, final ByteStringBuilder value)
  private boolean putNoOverwrite(final TreeName treeName, final byte[] key, final ByteStringBuilder value)
      throws DirectoryException
  {
    final ByteString keyEntry = ByteString.wrap(key);
    final ByteString valueEntry = ByteString.wrap(value.getBackingArray(), 0, value.length());
    for (int i = 0; i < 3; i++)
    {
      try
      {
        final OperationStatus status = database.putNoOverwrite(null, keyEntry, valueEntry);
        if (status != SUCCESS)
      storage.write(new WriteOperation()
        {
          final LocalizableMessage m = ERR_JEB_COMPSCHEMA_CANNOT_STORE_STATUS.get(status);
        @Override
        public void run(WriteableStorage txn) throws Exception
        {
          if (!txn.putIfAbsent(treeName, keyEntry, valueEntry))
          {
            final LocalizableMessage m = ERR_JEB_COMPSCHEMA_CANNOT_STORE_STATUS.get(false);
          throw new DirectoryException(DirectoryServer.getServerErrorResultCode(), m);
        }
        }
      });
        return true;
      }
      catch (final LockConflictException ce)
    catch (final Exception e)
      {
        continue;
      final LocalizableMessage m = ERR_JEB_COMPSCHEMA_CANNOT_STORE_EX.get(e.getMessage());
      throw new DirectoryException(DirectoryServer.getServerErrorResultCode(), m, e);
      }
      catch (final StorageRuntimeException de)
      {
        final LocalizableMessage m = ERR_JEB_COMPSCHEMA_CANNOT_STORE_EX.get(de.getMessage());
        throw new DirectoryException(DirectoryServer.getServerErrorResultCode(), m, de);
      }
    }
    return false;
  }

}

 opendj3-server-dev/src/server/org/opends/server/backends/pluggable/RootContainer.java

@@ -44,7 +44,6 @@
import org.opends.server.backends.pluggable.spi.StorageRuntimeException;
import org.opends.server.backends.pluggable.spi.WriteOperation;
import org.opends.server.backends.pluggable.spi.WriteableStorage;
import org.opends.server.core.DefaultCompressedSchema;
import org.opends.server.core.DirectoryServer;
import org.opends.server.types.ConfigChangeResult;
import org.opends.server.types.DN;
@@ -94,9 +93,8 @@
  /** The cached value of the next entry identifier to be assigned. */
  private AtomicLong nextid = new AtomicLong(1);

  // FIXME JNR Switch back to a database persisted implementation of CompressedSchema
  /** The compressed schema manager for this backend. */
  private CompressedSchema compressedSchema;
  private JECompressedSchema compressedSchema;

  private File backendDirectory;

@@ -320,7 +318,6 @@
      }
    }

    compressedSchema = new DefaultCompressedSchema();
    try
    {
      storage = new PersistItStorage();
@@ -331,6 +328,7 @@
        @Override
        public void run(WriteableStorage txn) throws Exception
        {
          compressedSchema = new JECompressedSchema(storage, txn);
          openAndRegisterEntryContainers(txn, config.getBaseDN());
        }
      });
@@ -535,8 +533,7 @@
      }
    }

    // FIXME JNR call close() for a DB stored compressed schema
    // compressedSchema.close();
    compressedSchema.close();
    config.removePersistitChangeListener(this);

    if (storage != null)