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/*-
* Copyright (C) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
*
* This file was distributed by Oracle as part of a version of Oracle Berkeley
* DB Java Edition made available at:
*
* http://www.oracle.com/technetwork/database/database-technologies/berkeleydb/downloads/index.html
*
* Please see the LICENSE file included in the top-level directory of the
* appropriate version of Oracle Berkeley DB Java Edition for a copy of the
* license and additional information.
*/
package com.sleepycat.je.util;
import java.io.File;
import java.lang.reflect.Constructor;
import com.sleepycat.je.EnvironmentLockedException;
import com.sleepycat.je.EnvironmentNotFoundException;
import com.sleepycat.je.config.EnvironmentParams;
import com.sleepycat.je.dbi.EnvironmentImpl;
import com.sleepycat.je.log.DumpFileReader;
import com.sleepycat.je.log.FileManager;
import com.sleepycat.je.log.LastFileReader;
import com.sleepycat.je.log.PrintFileReader;
import com.sleepycat.je.log.StatsFileReader;
import com.sleepycat.je.log.VLSNDistributionReader;
import com.sleepycat.je.tree.Key;
import com.sleepycat.je.tree.Key.DumpType;
import com.sleepycat.je.utilint.CmdUtil;
import com.sleepycat.je.utilint.DbLsn;
/**
* Dumps the contents of the log in XML format to System.out.
*
* To print an environment log:
*
*
* DbPrintLog.main(argv);
*
*/
public class DbPrintLog {
/**
* Dump a JE log into human readable form.
*/
public void dump(File envHome,
String entryTypes,
String txnIds,
long startLsn,
long endLsn,
boolean verbose,
boolean stats,
boolean repEntriesOnly,
boolean csvFormat,
boolean forwards,
boolean vlsnDistribution,
String customDumpReaderClass)
throws EnvironmentNotFoundException,
EnvironmentLockedException {
dump(envHome, entryTypes, "" /*dbIds*/, txnIds, startLsn, endLsn,
verbose, stats, repEntriesOnly, csvFormat, forwards,
vlsnDistribution, customDumpReaderClass);
}
private void dump(File envHome,
String entryTypes,
String dbIds,
String txnIds,
long startLsn,
long endLsn,
boolean verbose,
boolean stats,
boolean repEntriesOnly,
boolean csvFormat,
boolean forwards,
boolean vlsnDistribution,
String customDumpReaderClass) {
EnvironmentImpl env =
CmdUtil.makeUtilityEnvironment(envHome, true);
FileManager fileManager = env.getFileManager();
fileManager.setIncludeDeletedFiles(true);
int readBufferSize =
env.getConfigManager().getInt
(EnvironmentParams.LOG_ITERATOR_READ_SIZE);
/* Configure the startLsn and endOfFileLsn if reading backwards. */
long endOfFileLsn = DbLsn.NULL_LSN;
if (startLsn == DbLsn.NULL_LSN && endLsn == DbLsn.NULL_LSN &&
!forwards) {
LastFileReader fileReader =
new LastFileReader(env, readBufferSize);
while (fileReader.readNextEntry()) {
}
startLsn = fileReader.getLastValidLsn();
endOfFileLsn = fileReader.getEndOfLog();
}
try {
/*
* Make a reader. First see if a custom debug class is available,
* else use the default versions.
*/
DumpFileReader reader = null;
if (customDumpReaderClass != null) {
reader = getDebugReader(
customDumpReaderClass, env, readBufferSize,
startLsn, endLsn, endOfFileLsn, entryTypes, txnIds,
verbose, repEntriesOnly, forwards);
} else {
if (stats) {
reader = new StatsFileReader(
env, readBufferSize, startLsn, endLsn, endOfFileLsn,
entryTypes, dbIds, txnIds, verbose, repEntriesOnly,
forwards);
} else if (vlsnDistribution) {
reader = new VLSNDistributionReader(
env, readBufferSize, startLsn, endLsn, endOfFileLsn,
verbose, forwards);
} else {
reader = new PrintFileReader(
env, readBufferSize, startLsn, endLsn, endOfFileLsn,
entryTypes, dbIds, txnIds, verbose, repEntriesOnly,
forwards);
}
}
/* Enclose the output in a tag to keep proper XML syntax. */
if (!csvFormat) {
System.out.println("");
}
while (reader.readNextEntry()) {
}
reader.summarize(csvFormat);
if (!csvFormat) {
System.out.println(" ");
}
} finally {
env.close();
}
}
/**
* The main used by the DbPrintLog utility.
*
* @param argv An array of command line arguments to the DbPrintLog
* utility.
*
*
* usage: java { com.sleepycat.je.util.DbPrintLog | -jar
* je-<version>.jar DbPrintLog }
* -h <envHomeDir>
* -s <start file number or LSN, in hex>
* -e <end file number or LSN, in hex>
* -k <binary|hex|text|obfuscate> (format for dumping the key/data)
* -db <targeted db ids, comma separated>
* -tx <targeted txn ids, comma separated>
* -ty <targeted entry types, comma separated>
* -S show summary of log entries
* -SC show summary of log entries in CSV format
* -r only print replicated log entries
* -b scan log backwards. The entire log must be scanned, cannot be used
* with -s or -e
* -q if specified, concise version is printed,
* default is verbose version
* -c <name of custom dump reader class> if specified, DbPrintLog
* will attempt to load a class of this name, which will be used to
* process log entries. Used to customize formatting and dumping when
* debugging files.
*
*
* All arguments are optional. The current directory is used if {@code
* -h} is not specified.
*/
public static void main(String[] argv) {
try {
int whichArg = 0;
String entryTypes = null;
String dbIds = null;
String txnIds = null;
long startLsn = DbLsn.NULL_LSN;
long endLsn = DbLsn.NULL_LSN;
boolean verbose = true;
boolean stats = false;
boolean csvFormat = false;
boolean repEntriesOnly = false;
boolean forwards = true;
String customDumpReaderClass = null;
boolean vlsnDistribution = false;
/* Default to looking in current directory. */
File envHome = new File(".");
Key.DUMP_TYPE = DumpType.BINARY;
while (whichArg < argv.length) {
String nextArg = argv[whichArg];
if (nextArg.equals("-h")) {
whichArg++;
envHome = new File(CmdUtil.getArg(argv, whichArg));
} else if (nextArg.equals("-ty")) {
whichArg++;
entryTypes = CmdUtil.getArg(argv, whichArg);
} else if (nextArg.equals("-db")) {
whichArg++;
dbIds = CmdUtil.getArg(argv, whichArg);
} else if (nextArg.equals("-tx")) {
whichArg++;
txnIds = CmdUtil.getArg(argv, whichArg);
} else if (nextArg.equals("-s")) {
whichArg++;
startLsn = CmdUtil.readLsn(CmdUtil.getArg(argv, whichArg));
} else if (nextArg.equals("-e")) {
whichArg++;
endLsn = CmdUtil.readLsn(CmdUtil.getArg(argv, whichArg));
} else if (nextArg.equals("-k")) {
whichArg++;
String dumpType = CmdUtil.getArg(argv, whichArg);
if (dumpType.equalsIgnoreCase("text")) {
Key.DUMP_TYPE = DumpType.TEXT;
} else if (dumpType.equalsIgnoreCase("hex")) {
Key.DUMP_TYPE = DumpType.HEX;
} else if (dumpType.equalsIgnoreCase("binary")) {
Key.DUMP_TYPE = DumpType.BINARY;
} else if (dumpType.equalsIgnoreCase("obfuscate")) {
Key.DUMP_TYPE = DumpType.OBFUSCATE;
} else {
System.err.println
(dumpType +
" is not a supported dump format type.");
}
} else if (nextArg.equals("-q")) {
verbose = false;
} else if (nextArg.equals("-b")) {
forwards = false;
} else if (nextArg.equals("-S")) {
stats = true;
} else if (nextArg.equals("-SC")) {
stats = true;
csvFormat = true;
} else if (nextArg.equals("-r")) {
repEntriesOnly = true;
} else if (nextArg.equals("-c")) {
whichArg++;
customDumpReaderClass = CmdUtil.getArg(argv, whichArg);
} else if (nextArg.equals("-vd")) {
/*
* An unadvertised option which displays vlsn distribution
* in a log, for debugging.
*/
vlsnDistribution = true;
} else {
System.err.println
(nextArg + " is not a supported option.");
usage();
System.exit(-1);
}
whichArg++;
}
/* Don't support scan backwards when -s or -e is enabled. */
if ((startLsn != DbLsn.NULL_LSN || endLsn != DbLsn.NULL_LSN) &&
!forwards) {
throw new UnsupportedOperationException
("Backwards scans are not supported when -s or -e are " +
"used. They can only be used against the entire log.");
}
DbPrintLog printer = new DbPrintLog();
printer.dump(envHome, entryTypes, dbIds, txnIds, startLsn, endLsn,
verbose, stats, repEntriesOnly, csvFormat, forwards,
vlsnDistribution, customDumpReaderClass);
} catch (Throwable e) {
e.printStackTrace();
System.out.println(e.getMessage());
usage();
System.exit(1);
}
}
private static void usage() {
System.out.println("Usage: " +
CmdUtil.getJavaCommand(DbPrintLog.class));
System.out.println(" -h ");
System.out.println(" -s ");
System.out.println(" -e ");
System.out.println(" -k " +
"(format for dumping the key and data)");
System.out.println(" -db ");
System.out.println(" -tx ");
System.out.println(" -ty ");
System.out.println(" -S show Summary of log entries");
System.out.println(" -SC show Summary of log entries in CSV format");
System.out.println(" -r only print replicated log entries");
System.out.println(" -b scan all the log files backwards, don't ");
System.out.println(" support scan between two log files");
System.out.println(" -q if specified, concise version is printed");
System.out.println(" Default is verbose version.)");
System.out.println(" -c if specified, ");
System.out.println(" attempt to load this class to use for the ");
System.out.println(" formatting of dumped log entries");
System.out.println("All arguments are optional");
}
/**
* If a custom dump reader class is specified, we'll use that for
* DbPrintLog instead of the regular DumpFileReader. The custom reader must
* have DumpFileReader as a superclass ancestor. Its constructor must have
* this signature:
*
* public class FooReader extends DumpFileReader {
*
* public FooReader(EnvironmentImpl env,
* Integer readBufferSize,
* Long startLsn,
* Long finishLsn,
* Long endOfFileLsn,
* String entryTypes,
* String txnIds,
* Boolean verbose,
* Boolean repEntriesOnly,
* Boolean forwards)
* super(env, readBufferSize, startLsn, finishLsn, endOfFileLsn,
* entryTypes, txnIds, verbose, repEntriesOnly, forwards);
*
* See com.sleepycat.je.util.TestDumper, on the test side, for an example.
*/
private DumpFileReader getDebugReader(String customDumpReaderClass,
EnvironmentImpl env,
int readBufferSize,
long startLsn,
long finishLsn,
long endOfFileLsn,
String entryTypes,
String txnIds,
boolean verbose,
boolean repEntriesOnly,
boolean forwards) {
Class debugClass = null;
try {
debugClass = Class.forName(customDumpReaderClass);
} catch (Exception e) {
throw new IllegalArgumentException
("-c was specified, but couldn't load " +
customDumpReaderClass + " ", e);
}
Class args[] = { EnvironmentImpl.class,
Integer.class, // readBufferSize
Long.class, // startLsn
Long.class, // finishLsn
Long.class, // endOfFileLsn
String.class, // entryTypes
String.class, // txnIds
Boolean.class, // verbose
Boolean.class, // repEntriesOnly
Boolean.class }; // forwards
DumpFileReader debugReader = null;
try {
Constructor con =
debugClass.getConstructor(args);
debugReader = (DumpFileReader) con.newInstance(env,
readBufferSize,
startLsn,
finishLsn,
endOfFileLsn,
entryTypes,
txnIds,
verbose,
repEntriesOnly,
forwards);
} catch (Exception e) {
throw new IllegalStateException
("-c was specified, but couldn't instantiate " +
customDumpReaderClass + " ", e);
}
return debugReader;
}
}
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