io.aeron.archive

Class ArchiveTool

java.lang.Object

io.aeron.archive.ArchiveTool

public class ArchiveTool
extends Object

Tool for inspecting and performing administrative tasks on an Archive and its contents which is described in a Catalog.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ArchiveTool.ActionConfirmation<T> Allows user to confirm or reject an action.
static class	ArchiveTool.VerifyOption Set of options for verify(PrintStream, File, Set, String, ActionConfirmation) and verifyRecording(PrintStream, File, long, Set, String, ActionConfirmation) methods.

Constructor Summary

Constructors

Constructor and Description
ArchiveTool()

Method Summary

Modifier and Type	Method and Description
static long	capacity(File archiveDir) Get the capacity in bytes of the Catalog.
static long	capacity(File archiveDir, long newCapacity) Set the capacity in bytes of the Catalog.
static void	checksum(PrintStream out, File archiveDir, boolean allFiles, String checksumClassName) Compute and persist CRC-32 checksums for every fragment of a segment file for all recordings in the catalog.
static void	checksumRecording(PrintStream out, File archiveDir, long recordingId, boolean allFiles, String checksumClassName) Compute and persist CRC-32 checksums for every fragment of a segment file(s) for a given recording.
static void	compact(PrintStream out, File archiveDir) Compact Catalog file by removing all recordings in state RecordingState.INVALID and delete the corresponding segment files.
static void	deleteOrphanedSegments(PrintStream out, File archiveDir) Delete orphaned recording segments that have been detached, i.e.
static void	describe(PrintStream out, File archiveDir) Describe the metadata for entries in the Catalog.
static void	describeRecording(PrintStream out, File archiveDir, long recordingId) Describe the metadata for a entry in the Catalog identified by recording id.
static void	dump(PrintStream out, File archiveDir, long fragmentCountLimit, ArchiveTool.ActionConfirmation<Long> confirmActionOnFragmentCountLimit) Dump the contents of an Archive so it can be inspected or debugged.
static int	entryCount(File archiveDir) Count of the number of entries in the Catalog.
static void	main(String[] args) Main method for launching the process.
static int	maxEntries(File archiveDir) Deprecated. Use capacity(java.io.File) instead.
static int	maxEntries(File archiveDir, long newMaxEntries) Deprecated. Use capacity(File, long) instead.
static void	migrate(PrintStream out, File archiveDir) Migrate previous archive MarkFile, Catalog, and recordings from previous version to latest version.
static long	pid(File archiveDir) Get the pid of the process for the Archive.
static void	printErrors(PrintStream out, File archiveDir) Print the errors in the MarkFile.
static boolean	verify(PrintStream out, File archiveDir, Set<ArchiveTool.VerifyOption> options, String checksumClassName, ArchiveTool.ActionConfirmation<File> truncateOnPageStraddle) Verify descriptors in the catalog, checking recording files availability and contents.
static boolean	verifyRecording(PrintStream out, File archiveDir, long recordingId, Set<ArchiveTool.VerifyOption> options, String checksumClassName, ArchiveTool.ActionConfirmation<File> truncateOnPageStraddle) Verify descriptor in the catalog according to recordingId, checking recording files availability and contents.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ArchiveTool

public ArchiveTool()

Method Detail

main

public static void main(String[] args)

Main method for launching the process.

Parameters:

args - passed to the process.

maxEntries

@Deprecated
public static int maxEntries(File archiveDir)

Deprecated. Use capacity(java.io.File) instead.

Get the maximum number of entries supported by a Catalog.

Parameters:

archiveDir - containing the Catalog.

Returns:

the maximum number of entries supported by a Catalog.

See Also:

capacity(File)

maxEntries

@Deprecated
public static int maxEntries(File archiveDir,
                                         long newMaxEntries)

Deprecated. Use capacity(File, long) instead.

Set the maximum number of entries supported by a Catalog.

Parameters:

archiveDir - containing the Catalog.

newMaxEntries - value to set.

Returns:

the maximum number of entries supported by a Catalog after update.

See Also:

capacity(File, long)

capacity

public static long capacity(File archiveDir)

Get the capacity in bytes of the Catalog.

Parameters:

archiveDir - containing the Catalog.

Returns:

capacity in bytes of the Catalog, i.e. size of the Catalog file.

capacity

public static long capacity(File archiveDir,
                            long newCapacity)

Set the capacity in bytes of the Catalog. If new capacity is smaller than current Catalog capacity then this method is a no op.

Parameters:

archiveDir - containing the Catalog.

newCapacity - value to set.

Returns:

the capacity of the Catalog after update.

describe

public static void describe(PrintStream out,
                            File archiveDir)

Describe the metadata for entries in the Catalog.

Parameters:

out - to which the entries will be printed.

archiveDir - containing the Catalog.

describeRecording

public static void describeRecording(PrintStream out,
                                     File archiveDir,
                                     long recordingId)

Describe the metadata for a entry in the Catalog identified by recording id.

Parameters:

out - to which the entry will be printed.

archiveDir - containing the Catalog.

recordingId - to identify the entry.

entryCount

public static int entryCount(File archiveDir)

Count of the number of entries in the Catalog.

Parameters:

archiveDir - containing the Catalog.

Returns:

the number of entries in the Catalog.

pid

public static long pid(File archiveDir)

Get the pid of the process for the Archive.

Parameters:

archiveDir - containing the MarkFile.

Returns:

the pid of the process for the Archive.

printErrors

public static void printErrors(PrintStream out,
                               File archiveDir)

Print the errors in the MarkFile.

Parameters:

out - stream to which the errors will be printed.

archiveDir - containing the MarkFile.

dump

public static void dump(PrintStream out,
                        File archiveDir,
                        long fragmentCountLimit,
                        ArchiveTool.ActionConfirmation<Long> confirmActionOnFragmentCountLimit)

Dump the contents of an Archive so it can be inspected or debugged. Each recording will have its contents dumped up to fragmentCountLimit before requesting to continue.

Parameters:

out - to which the contents will be printed.

archiveDir - containing the Archive.

fragmentCountLimit - limit of data fragments to print from each recording before continue.

confirmActionOnFragmentCountLimit - confirm continue to dump at limit.

verify

public static boolean verify(PrintStream out,
                             File archiveDir,
                             Set<ArchiveTool.VerifyOption> options,
                             String checksumClassName,
                             ArchiveTool.ActionConfirmation<File> truncateOnPageStraddle)

Verify descriptors in the catalog, checking recording files availability and contents.

Faulty entries are marked as unusable.

Parameters:

out - stream to print results and errors to.

archiveDir - that contains MarkFile, Catalog, and recordings.

options - set of options that control verification behavior.

truncateOnPageStraddle - action to perform if last fragment in the max segment file straddles the page boundary, i.e. if true the file will be truncated (last fragment will be deleted), if false the fragment is considered complete.

checksumClassName - (optional) fully qualified class name of the Checksum implementation.

Returns:

true if no errors have been encountered, false otherwise (faulty entries are marked as unusable if false is returned)

verifyRecording

public static boolean verifyRecording(PrintStream out,
                                      File archiveDir,
                                      long recordingId,
                                      Set<ArchiveTool.VerifyOption> options,
                                      String checksumClassName,
                                      ArchiveTool.ActionConfirmation<File> truncateOnPageStraddle)

Verify descriptor in the catalog according to recordingId, checking recording files availability and contents.

Faulty entries are marked as unusable.

Parameters:

out - stream to print results and errors to.

archiveDir - that contains MarkFile, Catalog, and recordings.

recordingId - to verify.

options - set of options that control verification behavior.

truncateOnPageStraddle - action to perform if last fragment in the max segment file straddles the page boundary, i.e. if true the file will be truncated (last fragment will be deleted), if false the fragment if considered complete.

checksumClassName - (optional) fully qualified class name of the Checksum implementation.

Returns:

true if no errors have been encountered, false otherwise (the recording is marked as unusable if false is returned)

Throws:

AeronException - if there is no recording with recordingId in the archive

checksum

public static void checksum(PrintStream out,
                            File archiveDir,
                            boolean allFiles,
                            String checksumClassName)

Compute and persist CRC-32 checksums for every fragment of a segment file for all recordings in the catalog.

Parameters:

out - stream to print results and errors to.

archiveDir - that contains MarkFile, Catalog, and recordings.

allFiles - should compute checksums for all segment file or only for the last one.

checksumClassName - fully qualified class name of the Checksum implementation.

checksumRecording

public static void checksumRecording(PrintStream out,
                                     File archiveDir,
                                     long recordingId,
                                     boolean allFiles,
                                     String checksumClassName)

Compute and persist CRC-32 checksums for every fragment of a segment file(s) for a given recording.

Parameters:

out - stream to print results and errors to.

archiveDir - that contains MarkFile, Catalog, and recordings.

recordingId - to compute checksums for.

allFiles - should compute checksums for all segment file or only for the last one.

checksumClassName - fully qualified class name of the Checksum implementation.

Throws:

AeronException - if there is no recording with recordingId in the archive

migrate

public static void migrate(PrintStream out,
                           File archiveDir)

Migrate previous archive MarkFile, Catalog, and recordings from previous version to latest version.

Parameters:

out - output stream to print results and errors to.

archiveDir - that contains MarkFile, Catalog and recordings.

compact

public static void compact(PrintStream out,
                           File archiveDir)

Compact Catalog file by removing all recordings in state RecordingState.INVALID and delete the corresponding segment files.

Parameters:

out - stream to print results and errors to.

archiveDir - that contains MarkFile, Catalog, and recordings.

deleteOrphanedSegments

public static void deleteOrphanedSegments(PrintStream out,
                                          File archiveDir)

Delete orphaned recording segments that have been detached, i.e. outside the start and stop recording range, but are not deleted.

Parameters:

out - stream to print results and errors to.

archiveDir - that contains MarkFile, Catalog, and recordings.