Exemplo n.º 1
0
 public void delIndex(String name) throws IOException {
   Integer page = (Integer) metaIndex.remove(name);
   if (page == null) {
     return;
   }
   Serializer nb = new IdentityBytes();
   BSkipList bsl = new BSkipList(spanSize, this, page.intValue(), nb, nb, true);
   bsl.delete();
 }
Exemplo n.º 2
0
 public BSkipList makeIndex(String name, Serializer key, Serializer val) throws IOException {
   if (metaIndex.get(name) != null) {
     throw new IOException("Index already exists");
   }
   int page = allocPage();
   metaIndex.put(name, Integer.valueOf(page));
   BSkipList.init(this, page, spanSize);
   BSkipList bsl = new BSkipList(spanSize, this, page, key, val, true);
   openIndices.put(name, bsl);
   return bsl;
 }
Exemplo n.º 3
0
 /**
  * Run an integrity check on the blockfile and all the skiplists in it
  *
  * @return true if the levels were modified.
  */
 public boolean bfck(boolean fix) {
   if (log.shouldLog(Log.INFO)) {
     log.info("magic bytes " + magicBytes);
     log.info("fileLen " + fileLen);
     log.info("freeListStart " + freeListStart);
     log.info("mounted " + mounted);
     log.info("spanSize " + spanSize);
     log.info("Metaindex");
     log.info("Checking meta index in blockfile " + file);
   }
   boolean rv = metaIndex.bslck(fix, true);
   if (rv) {
     if (log.shouldLog(Log.WARN)) log.warn("Repaired meta index in blockfile " + file);
   } else {
     if (log.shouldLog(Log.INFO)) log.info("No errors in meta index in blockfile " + file);
   }
   int items = 0;
   for (SkipIterator iter = metaIndex.iterator(); iter.hasNext(); ) {
     String slname = (String) iter.nextKey();
     Integer page = (Integer) iter.next();
     if (log.shouldLog(Log.INFO)) log.info("List " + slname + " page " + page);
     try {
       // This uses IdentityBytes, so the value class won't be right, but at least
       // it won't fail the out-of-order check
       Serializer keyser =
           slname.equals("%%__REVERSE__%%") ? new IntBytes() : new UTF8StringBytes();
       BSkipList bsl = getIndex(slname, keyser, new IdentityBytes());
       if (bsl == null) {
         log.error("Can't find list? " + slname);
         continue;
       }
       // The check is now done in getIndex(), no need to do here...
       // but we can't get the return value of the check here.
       items++;
     } catch (IOException ioe) {
       log.error("Error with list " + slname, ioe);
     }
   }
   log.info("Checked meta index and " + items + " skiplists");
   if (freeListStart != 0) {
     try {
       if (flb == null) flb = new FreeListBlock(file, freeListStart);
       flb.flbck(true);
     } catch (IOException ioe) {
       log.error("Free list error", ioe);
     }
   } else {
     if (log.shouldLog(Log.INFO)) log.info("No freelist");
   }
   return rv;
 }
Exemplo n.º 4
0
  /** If the file is writable, this runs an integrity check and repair on first open. */
  public BSkipList getIndex(String name, Serializer key, Serializer val) throws IOException {
    // added I2P
    BSkipList bsl = (BSkipList) openIndices.get(name);
    if (bsl != null) return bsl;

    Integer page = (Integer) metaIndex.get(name);
    if (page == null) {
      return null;
    }
    bsl = new BSkipList(spanSize, this, page.intValue(), key, val, true);
    if (file.canWrite()) {
      log.info("Checking skiplist " + name + " in blockfile " + file);
      if (bsl.bslck(true, false))
        log.logAlways(Log.WARN, "Repaired skiplist " + name + " in blockfile " + file);
      else log.info("No errors in skiplist " + name + " in blockfile " + file);
    }
    openIndices.put(name, bsl);
    return bsl;
  }
Exemplo n.º 5
0
  /** Note (I2P) Does NOT close the RAF / RAI. */
  public void close() throws IOException {
    // added I2P
    if (_isClosed) return;
    _isClosed = true;
    metaIndex.close();

    Set<String> oi = openIndices.keySet();
    Iterator<String> i = oi.iterator();
    Object k;
    while (i.hasNext()) {
      k = i.next();
      BSkipList bsl = openIndices.get(k);
      bsl.close();
    }

    // Unmount.
    if (file.canWrite()) {
      file.seek(BlockFile.OFFSET_MOUNTED);
      file.writeShort(0);
    }
  }
Exemplo n.º 6
0
  /** Use this constructor with a readonly RAI and init = false for a readonly blockfile */
  public BlockFile(RandomAccessInterface rai, boolean init) throws IOException {
    if (rai == null) {
      throw new NullPointerException();
    }

    file = rai;

    if (init) {
      file.setLength(fileLen);
      writeSuperBlock();
      BSkipList.init(this, METAINDEX_PAGE, spanSize);
    }

    readSuperBlock();
    if (magicBytes != MAGIC) {
      if ((magicBytes & MAGIC_BASE) == MAGIC_BASE) {
        throw new IOException(
            "Expected "
                + MAJOR
                + '.'
                + MINOR
                + " but got "
                + (magicBytes >> 8 & 0xff)
                + '.'
                + (magicBytes & 0xff));
      } else {
        throw new IOException("Bad magic number");
      }
    }
    _wasMounted = mounted != 0;
    if (_wasMounted) log.warn("Warning - file was not previously closed");
    if (fileLen != file.length())
      throw new IOException("Expected file length " + fileLen + " but actually " + file.length());
    if (rai.canWrite()) mount();

    metaIndex = new BSkipList(spanSize, this, METAINDEX_PAGE, new StringBytes(), new IntBytes());
  }
Exemplo n.º 7
0
 /** Added I2P */
 public void closeIndex(String name) {
   BSkipList bsl = (BSkipList) openIndices.remove(name);
   if (bsl != null) bsl.flush();
 }