コード例 #1
0
  // read or create index
  private void readOrCreateIndex(CollectionManager.Force ff, Formatter f) throws IOException {

    // force new index or test for new index needed
    boolean force =
        ((ff == CollectionManager.Force.always)
            || (ff == CollectionManager.Force.test && needsUpdate()));

    // otherwise, we're good as long as the index file exists
    File idx = gc.getIndexFile();
    if (force || !idx.exists() || !readIndex(idx.getPath())) {
      idx = gc.makeNewIndexFile(); // make sure we have a writeable index
      logger.info("GribCollection {}: createIndex {}", gc.getName(), idx.getPath());
      createIndex(idx, ff, f); // write out index
      gc.setIndexRaf(new RandomAccessFile(idx.getPath(), "r"));
      readIndex(gc.getIndexRaf()); // read back in index
    }
  }
コード例 #2
0
  public boolean readIndex(RandomAccessFile raf) {
    gc.setIndexRaf(raf); // LOOK leaving the raf open in the GribCollection
    try {
      raf.order(RandomAccessFile.BIG_ENDIAN);
      raf.seek(0);

      //// header message
      if (!NcStream.readAndTest(raf, getMagicStart().getBytes())) {
        logger.error("GribCollection {}: invalid index", gc.getName());
        return false;
      }

      int v = raf.readInt();
      if (v != getVersion()) {
        logger.warn(
            "GribCollection {}: index found version={}, want version= {} on file {}",
            new Object[] {gc.getName(), v, version, raf.getLocation()});
        return false;
      }

      long skip = raf.readLong();
      raf.skipBytes(skip);

      int size = NcStream.readVInt(raf);
      if ((size < 0) || (size > 100 * 1000 * 1000)) {
        logger.warn("GribCollection {}: invalid index ", gc.getName());
        return false;
      }

      byte[] m = new byte[size];
      raf.readFully(m);

      GribCollectionProto.GribCollectionIndex proto =
          GribCollectionProto.GribCollectionIndex.parseFrom(m);

      gc.center = proto.getCenter();
      gc.subcenter = proto.getSubcenter();
      gc.master = proto.getMaster();
      gc.local = proto.getLocal();
      gc.genProcessType = proto.getGenProcessType();
      gc.genProcessId = proto.getGenProcessId();
      gc.backProcessId = proto.getBackProcessId();
      gc.local = proto.getLocal();
      // gc.tables = Grib2Tables.factory(gc.center, gc.subcenter, gc.master, gc.local);

      gc.filenames = new ArrayList<String>(proto.getFilesCount());
      for (int i = 0; i < proto.getFilesCount(); i++) gc.filenames.add(proto.getFiles(i));

      // error condition on a GribCollection Index
      if ((proto.getFilesCount() == 0) && !(this instanceof Grib2TimePartitionBuilder)) {
        logger.warn("GribCollection {}: has no files, force recreate ", gc.getName());
        return false;
      }

      gc.groups = new ArrayList<GribCollection.GroupHcs>(proto.getGroupsCount());
      for (int i = 0; i < proto.getGroupsCount(); i++)
        gc.groups.add(readGroup(proto.getGroups(i), gc.makeGroup()));
      Collections.sort(gc.groups);
      // int count = 0;
      // for (GribCollection.GroupHcs gh : gc.groups)
      //  gh.setId("group"+(count++));

      gc.params = new ArrayList<Parameter>(proto.getParamsCount());
      for (int i = 0; i < proto.getParamsCount(); i++) gc.params.add(readParam(proto.getParams(i)));

      if (!readPartitions(proto)) {
        logger.warn("TimePartition {}: has no partitions, force recreate ", gc.getName());
        return false;
      }

      return true;

    } catch (Throwable t) {
      logger.error("Error reading index " + raf.getLocation(), t);
      return false;
    }
  }