Examples with SectionName org.apache.hadoop.hdfs.server.namenode.FSImageFormatProtobuf.SectionName used on opensource projects

Example 1 with SectionName

use of org.apache.hadoop.hdfs.server.namenode.FSImageFormatProtobuf.SectionName in project hadoop by apache.

the class PBImageXmlWriter method visit.

public void visit(RandomAccessFile file) throws IOException {
    if (!FSImageUtil.checkFileFormat(file)) {
        throw new IOException("Unrecognized FSImage");
    }
    FileSummary summary = FSImageUtil.loadSummary(file);
    try (FileInputStream fin = new FileInputStream(file.getFD())) {
        out.print("<?xml version=\"1.0\"?>\n<fsimage>");
        out.print("<version>");
        o("layoutVersion", summary.getLayoutVersion());
        o("onDiskVersion", summary.getOndiskVersion());
        // Output the version of OIV (which is not necessarily the version of
        // the fsimage file).  This could be helpful in the case where a bug
        // in OIV leads to information loss in the XML-- we can quickly tell
        // if a specific fsimage XML file is affected by this bug.
        o("oivRevision", VersionInfo.getRevision());
        out.print("</version>\n");
        ArrayList<FileSummary.Section> sections = Lists.newArrayList(summary.getSectionsList());
        Collections.sort(sections, new Comparator<FileSummary.Section>() {

            @Override
            public int compare(FileSummary.Section s1, FileSummary.Section s2) {
                SectionName n1 = SectionName.fromString(s1.getName());
                SectionName n2 = SectionName.fromString(s2.getName());
                if (n1 == null) {
                    return n2 == null ? 0 : -1;
                } else if (n2 == null) {
                    return -1;
                } else {
                    return n1.ordinal() - n2.ordinal();
                }
            }
        });
        for (FileSummary.Section s : sections) {
            fin.getChannel().position(s.getOffset());
            InputStream is = FSImageUtil.wrapInputStreamForCompression(conf, summary.getCodec(), new BufferedInputStream(new LimitInputStream(fin, s.getLength())));
            switch(SectionName.fromString(s.getName())) {
                case NS_INFO:
                    dumpNameSection(is);
                    break;
                case STRING_TABLE:
                    loadStringTable(is);
                    break;
                case INODE:
                    dumpINodeSection(is);
                    break;
                case INODE_REFERENCE:
                    dumpINodeReferenceSection(is);
                    break;
                case INODE_DIR:
                    dumpINodeDirectorySection(is);
                    break;
                case FILES_UNDERCONSTRUCTION:
                    dumpFileUnderConstructionSection(is);
                    break;
                case SNAPSHOT:
                    dumpSnapshotSection(is);
                    break;
                case SNAPSHOT_DIFF:
                    dumpSnapshotDiffSection(is);
                    break;
                case SECRET_MANAGER:
                    dumpSecretManagerSection(is);
                    break;
                case CACHE_MANAGER:
                    dumpCacheManagerSection(is);
                    break;
                default:
                    break;
            }
        }
        out.print("</fsimage>\n");
    }
}