From 82c210c6719b8b09b5d50839b209277f2fa7e009 Mon Sep 17 00:00:00 2001
From: Andreas Romeyke <andreas.romeyke@slub-dresden.de>
Date: Mon, 20 Jan 2014 17:11:32 +0000
Subject: [PATCH] - decompiled NFSStoragePlugin via java decompiler for
interoperability research
---
.../plugin/storage/nfs/NFSStoragePlugin.java | 346 ++++++++++++++++++
1 file changed, 346 insertions(+)
create mode 100644 java/org/slub/rosetta/dps/repository/plugin/storage/nfs/NFSStoragePlugin.java
diff --git a/java/org/slub/rosetta/dps/repository/plugin/storage/nfs/NFSStoragePlugin.java b/java/org/slub/rosetta/dps/repository/plugin/storage/nfs/NFSStoragePlugin.java
new file mode 100644
index 0000000..56b377e
--- /dev/null
+++ b/java/org/slub/rosetta/dps/repository/plugin/storage/nfs/NFSStoragePlugin.java
@@ -0,0 +1,346 @@
+// decompiled for interoperability via java decompiler
+package com.exlibris.dps.repository.plugin.storage.nfs;
+
+import com.exlibris.core.infra.common.exceptions.logging.ExLogger;
+import com.exlibris.core.infra.common.util.IOUtil;
+import com.exlibris.core.infra.svc.api.scriptRunner.ExecExternalProcess;
+import com.exlibris.core.sdk.storage.containers.StoredEntityMetaData;
+import com.exlibris.core.sdk.storage.handler.AbstractStorageHandler;
+import com.exlibris.core.sdk.utils.FileUtil;
+import com.exlibris.digitool.common.storage.Fixity;
+import com.exlibris.digitool.common.storage.Fixity.FixityAlgorithm;
+import com.exlibris.digitool.infrastructure.utils.Checksummer;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.RandomAccessFile;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import org.apache.commons.lang.StringUtils;
+
+public class NFSStoragePlugin
+ extends AbstractStorageHandler
+{
+ private static final String DIR_PREFIX = "DIR_PREFIX";
+ private static final String FILE_PER_DIR = "FILE_PER_DIR";
+ private static final String DIR_ROOT = "DIR_ROOT";
+ private static final String FILES_HANDLING_METHOD = "FILES_HANDLING_METHOD";
+ private static final ExLogger log = ExLogger.getExLogger(NFSStoragePlugin.class);
+
+ public boolean deleteEntity(String storedEntityIdentifier)
+ {
+ File file = new File((String)parameters.get("DIR_ROOT") + storedEntityIdentifier);
+ try
+ {
+ return file.delete();
+ }
+ catch (Exception e)
+ {
+ log.warn("failed to delete entity with path: " + file.getPath(), new String[0]);
+ }
+ return true;
+ }
+
+ public InputStream retrieveEntity(String storedEntityIdentifier)
+ throws IOException
+ {
+ return new FileInputStream((String)parameters.get("DIR_ROOT") + storedEntityIdentifier);
+ }
+
+ public String storeEntity(InputStream is, StoredEntityMetaData storedEntityMetadata)
+ throws Exception
+ {
+ String fileName = createFileName(storedEntityMetadata);
+
+ String relativeDirectoryPath = getStreamRelativePath();
+ File destFile = getStreamDirectory(relativeDirectoryPath, fileName);
+ if (canHandleSourcePath(storedEntityMetadata.getCurrentFilePath()))
+ {
+ is.close();
+ copyStream(storedEntityMetadata.getCurrentFilePath(), destFile.getAbsolutePath());
+ }
+ else
+ {
+ IOUtil.copy(is, new FileOutputStream(destFile));
+ }
+ String storedEntityIdentifier = relativeDirectoryPath + getNextDir(destFile.getAbsolutePath()) + File.separator + fileName;
+ if (!checkFixity(storedEntityMetadata.getFixities(), storedEntityIdentifier))
+ {
+ deleteEntity(storedEntityIdentifier);
+ return null;
+ }
+ return storedEntityIdentifier;
+ }
+
+ public boolean checkFixity(List<Fixity> fixities, String storedEntityIdentifier)
+ throws Exception
+ {
+ boolean result = true;
+ if (fixities != null)
+ {
+ boolean calcMD5 = false;
+ boolean calcSHA1 = false;
+ boolean calcCRC32 = false;
+ for (Fixity fixity : fixities)
+ {
+ fixity.setResult(null);
+ if (Fixity.FixityAlgorithm.MD5.toString().equals(fixity.getAlgorithm()))
+ {
+ calcMD5 = true;
+ }
+ else if (Fixity.FixityAlgorithm.SHA1.toString().equals(fixity.getAlgorithm()))
+ {
+ calcSHA1 = true;
+ }
+ else if (Fixity.FixityAlgorithm.CRC32.toString().equals(fixity.getAlgorithm()))
+ {
+ calcCRC32 = true;
+ }
+ else
+ {
+ String oldValue = fixity.getValue();
+ fixity.setValue(getChecksumUsingPlugin(getLocalFilePath(storedEntityIdentifier), fixity.getPluginName(), oldValue));
+ fixity.setResult(Boolean.valueOf((oldValue == null) || (oldValue.equals(fixity.getValue()))));
+ result &= fixity.getResult().booleanValue();
+ }
+ }
+ if ((calcMD5) || (calcSHA1) || (calcCRC32))
+ {
+ InputStream is = null;
+ try
+ {
+ is = retrieveEntity(storedEntityIdentifier);
+ checksummer = new Checksummer(is, calcMD5, calcSHA1, calcCRC32);
+ for (Fixity fixity : fixities)
+ {
+ int checksummerAlgorithmIndex = getChecksummerAlgorithmIndex(fixity.getAlgorithm());
+ if (checksummerAlgorithmIndex != -1)
+ {
+ String oldValue = fixity.getValue();
+ fixity.setValue(checksummer.getChecksum(fixity.getAlgorithm()));
+ fixity.setResult(Boolean.valueOf((oldValue == null) || (oldValue.equals(fixity.getValue()))));
+ result &= fixity.getResult().booleanValue();
+ }
+ }
+ }
+ finally
+ {
+ Checksummer checksummer;
+ if (is != null) {
+ is.close();
+ }
+ }
+ }
+ }
+ return result;
+ }
+
+ private int getChecksummerAlgorithmIndex(String algorithm)
+ {
+ try
+ {
+ Fixity.FixityAlgorithm fixityAlgorithm = Fixity.FixityAlgorithm.valueOf(algorithm);
+ return fixityAlgorithm.ordinal();
+ }
+ catch (Exception e) {}
+ return -1;
+ }
+
+ private String getStreamRelativePath()
+ {
+ String relativeDirectoryPath = "";
+ Date date = new Date();
+
+ relativeDirectoryPath = relativeDirectoryPath + File.separator;
+ relativeDirectoryPath = relativeDirectoryPath + new SimpleDateFormat("yyyy").format(date);
+ relativeDirectoryPath = relativeDirectoryPath + File.separator;
+ relativeDirectoryPath = relativeDirectoryPath + new SimpleDateFormat("MM").format(date);
+ relativeDirectoryPath = relativeDirectoryPath + File.separator;
+ relativeDirectoryPath = relativeDirectoryPath + new SimpleDateFormat("dd").format(date);
+ relativeDirectoryPath = relativeDirectoryPath + File.separator;
+
+ return relativeDirectoryPath;
+ }
+
+ private File getStreamDirectory(String path, String fileName)
+ {
+ String directoryPrefix = "fileset_";
+ int maxFilesPerDir = 100;
+ if (!StringUtils.isEmpty((String)parameters.get("DIR_PREFIX"))) {
+ directoryPrefix = (String)parameters.get("DIR_PREFIX");
+ }
+ if (!StringUtils.isEmpty((String)parameters.get("FILE_PER_DIR"))) {
+ maxFilesPerDir = Integer.valueOf((String)parameters.get("FILE_PER_DIR")).intValue();
+ }
+ File newDir = new File((String)parameters.get("DIR_ROOT") + File.separator + path);
+ newDir.mkdirs();
+ File destDir = FileUtil.getNextDirectory(newDir, directoryPrefix, maxFilesPerDir);
+
+ return new File(destDir.getAbsolutePath() + File.separator + fileName);
+ }
+
+ private String getNextDir(String fullPath)
+ {
+ String[] dirs = fullPath.split("\\" + File.separator);
+ return dirs[(dirs.length - 2)];
+ }
+
+ private boolean canHandleSourcePath(String srcPath)
+ {
+ try
+ {
+ File file = new File(srcPath);
+ return file.canRead();
+ }
+ catch (Exception e) {}
+ return false;
+ }
+
+ protected void copyStream(String srcPath, String destPath)
+ throws IOException
+ {
+ String filesHandlingMethod = (String)parameters.get("FILES_HANDLING_METHOD");
+ if ("move".equalsIgnoreCase(filesHandlingMethod))
+ {
+ File canonicalSrcFile = getCanonicalFile(srcPath);
+ FileUtil.moveFile(canonicalSrcFile, new File(destPath));
+ }
+ else if ("soft_link".equalsIgnoreCase(filesHandlingMethod))
+ {
+ softLink(srcPath, destPath);
+ }
+ else if ("hard_link".equalsIgnoreCase(filesHandlingMethod))
+ {
+ hardLink(srcPath, destPath);
+ }
+ else
+ {
+ FileUtil.copyFile(srcPath, destPath);
+ }
+ }
+
+ private File getCanonicalFile(String srcPath)
+ throws IOException
+ {
+ String fileName = srcPath.split("\\" + File.separator)[(srcPath.split("\\" + File.separator).length - 1)];
+ File canonicalSrcDir = new File(srcPath).getParentFile().getCanonicalFile();
+ File canonicalSrcFile = new File(canonicalSrcDir, fileName).getCanonicalFile();
+ return canonicalSrcFile;
+ }
+
+ private void hardLink(String srcPath, String destPath)
+ throws IOException
+ {
+ String command = "ln";
+ ExecExternalProcess proc = new ExecExternalProcess();
+ List<String> args = new LinkedList();
+ args.add(srcPath);
+ args.add(destPath);
+ int retValue = proc.execExternalProcess(command, args);
+ if (retValue != 0) {
+ throw new IOException("ln " + srcPath + " " + destPath + " failed " + proc.getErrorStream() + proc.getInputStream());
+ }
+ }
+
+ private void softLink(String srcPath, String destPath)
+ throws IOException
+ {
+ File source = new File(srcPath);
+ if (!source.exists()) {
+ throw new IOException("File " + source + " does not exist");
+ }
+ String command = "ln";
+ ExecExternalProcess proc = new ExecExternalProcess();
+ List<String> args = new ArrayList();
+ args.add("-s");
+ args.add(srcPath);
+ args.add(destPath);
+ int retValue = proc.execExternalProcess(command, args);
+ if (retValue != 0) {
+ throw new IOException("ln -s " + srcPath + " " + destPath + " failed " + proc.getErrorStream() + proc.getInputStream());
+ }
+ }
+
+ public String getFullFilePath(String storedEntityIdentifier)
+ {
+ return (String)parameters.get("DIR_ROOT") + storedEntityIdentifier;
+ }
+
+ public String getLocalFilePath(String storedEntityIdentifier)
+ {
+ return getFullFilePath(storedEntityIdentifier);
+ }
+
+ public boolean isAvailable()
+ {
+ try
+ {
+ File file = new File((String)parameters.get("DIR_ROOT"));
+ if ((!file.exists()) &&
+ (!file.mkdirs()))
+ {
+ log.error("No access to folder" + (String)parameters.get("DIR_ROOT"), new String[0]);
+ return false;
+ }
+ if (!file.canRead())
+ {
+ log.error("No read access to folder: " + (String)parameters.get("DIR_ROOT"), new String[0]);
+ return false;
+ }
+ if (!file.canWrite())
+ {
+ log.error("No write access to folder: " + (String)parameters.get("DIR_ROOT"), new String[0]);
+ return false;
+ }
+ }
+ catch (Exception e)
+ {
+ log.error("isAvailable method fell for storage: " + getStorageId(), e, new String[0]);
+ return false;
+ }
+ return true;
+ }
+
+ public byte[] retrieveEntityByRange(String storedEntityIdentifier, long start, long end)
+ throws Exception
+ {
+ bytes = new byte[(int)(end - start + 1L)];
+ RandomAccessFile file = null;
+ try
+ {
+ file = new RandomAccessFile((String)parameters.get("DIR_ROOT") + storedEntityIdentifier, "r");
+ file.seek(start);
+ file.readFully(bytes, 0, (int)(end - start + 1L));
+
+
+
+
+
+
+
+
+
+ return bytes;
+ }
+ finally
+ {
+ if (file != null) {
+ try
+ {
+ file.close();
+ }
+ catch (Exception e)
+ {
+ log.warn("Failed closing file", new String[0]);
+ }
+ }
+ }
+ }
+}
+
--
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