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- /*
- * Copyright (C) 2008-2010, Google Inc.
- * Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.com>
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.storage.pack;
-
- import java.util.concurrent.Executor;
- import java.util.zip.Deflater;
-
- import org.eclipse.jgit.internal.storage.file.PackIndexWriter;
- import org.eclipse.jgit.lib.Config;
- import org.eclipse.jgit.lib.Repository;
-
- /**
- * Configuration used by a pack writer when constructing the stream.
- *
- * A configuration may be modified once created, but should not be modified
- * while it is being used by a PackWriter. If a configuration is not modified it
- * is safe to share the same configuration instance between multiple concurrent
- * threads executing different PackWriters.
- */
- public class PackConfig {
- /**
- * Default value of deltas reuse option: {@value}
- *
- * @see #setReuseDeltas(boolean)
- */
- public static final boolean DEFAULT_REUSE_DELTAS = true;
-
- /**
- * Default value of objects reuse option: {@value}
- *
- * @see #setReuseObjects(boolean)
- */
- public static final boolean DEFAULT_REUSE_OBJECTS = true;
-
- /**
- * Default value of keep old packs option: {@value}
- *
- * @see #setPreserveOldPacks(boolean)
- */
- public static final boolean DEFAULT_PRESERVE_OLD_PACKS = false;
-
- /**
- * Default value of prune old packs option: {@value}
- *
- * @see #setPrunePreserved(boolean)
- */
- public static final boolean DEFAULT_PRUNE_PRESERVED = false;
-
- /**
- * Default value of delta compress option: {@value}
- *
- * @see #setDeltaCompress(boolean)
- */
- public static final boolean DEFAULT_DELTA_COMPRESS = true;
-
- /**
- * Default value of delta base as offset option: {@value}
- *
- * @see #setDeltaBaseAsOffset(boolean)
- */
- public static final boolean DEFAULT_DELTA_BASE_AS_OFFSET = false;
-
- /**
- * Default value of maximum delta chain depth: {@value}
- *
- * @see #setMaxDeltaDepth(int)
- */
- public static final int DEFAULT_MAX_DELTA_DEPTH = 50;
-
- /**
- * Default window size during packing: {@value}
- *
- * @see #setDeltaSearchWindowSize(int)
- */
- public static final int DEFAULT_DELTA_SEARCH_WINDOW_SIZE = 10;
-
- /**
- * Default big file threshold: {@value}
- *
- * @see #setBigFileThreshold(int)
- */
- public static final int DEFAULT_BIG_FILE_THRESHOLD = 50 * 1024 * 1024;
-
- /**
- * Default delta cache size: {@value}
- *
- * @see #setDeltaCacheSize(long)
- */
- public static final long DEFAULT_DELTA_CACHE_SIZE = 50 * 1024 * 1024;
-
- /**
- * Default delta cache limit: {@value}
- *
- * @see #setDeltaCacheLimit(int)
- */
- public static final int DEFAULT_DELTA_CACHE_LIMIT = 100;
-
- /**
- * Default index version: {@value}
- *
- * @see #setIndexVersion(int)
- */
- public static final int DEFAULT_INDEX_VERSION = 2;
-
- /**
- * Default value of the build bitmaps option: {@value}
- *
- * @see #setBuildBitmaps(boolean)
- * @since 3.0
- */
- public static final boolean DEFAULT_BUILD_BITMAPS = true;
-
- /**
- * Default count of most recent commits to select for bitmaps. Only applies
- * when bitmaps are enabled: {@value}
- *
- * @see #setBitmapContiguousCommitCount(int)
- * @since 4.2
- */
- public static final int DEFAULT_BITMAP_CONTIGUOUS_COMMIT_COUNT = 100;
-
- /**
- * Count at which the span between selected commits changes from
- * "bitmapRecentCommitSpan" to "bitmapDistantCommitSpan". Only applies when
- * bitmaps are enabled: {@value}
- *
- * @see #setBitmapRecentCommitCount(int)
- * @since 4.2
- */
- public static final int DEFAULT_BITMAP_RECENT_COMMIT_COUNT = 20000;
-
- /**
- * Default spacing between commits in recent history when selecting commits
- * for bitmaps. Only applies when bitmaps are enabled: {@value}
- *
- * @see #setBitmapRecentCommitSpan(int)
- * @since 4.2
- */
- public static final int DEFAULT_BITMAP_RECENT_COMMIT_SPAN = 100;
-
- /**
- * Default spacing between commits in distant history when selecting commits
- * for bitmaps. Only applies when bitmaps are enabled: {@value}
- *
- * @see #setBitmapDistantCommitSpan(int)
- * @since 4.2
- */
- public static final int DEFAULT_BITMAP_DISTANT_COMMIT_SPAN = 5000;
-
- /**
- * Default count of branches required to activate inactive branch commit
- * selection. If the number of branches is less than this then bitmaps for
- * the entire commit history of all branches will be created, otherwise
- * branches marked as "inactive" will have coverage for only partial
- * history: {@value}
- *
- * @see #setBitmapExcessiveBranchCount(int)
- * @since 4.2
- */
- public static final int DEFAULT_BITMAP_EXCESSIVE_BRANCH_COUNT = 100;
-
- /**
- * Default age at which a branch is considered inactive. Age is taken as the
- * number of days ago that the most recent commit was made to a branch. Only
- * affects bitmap processing if bitmaps are enabled and the
- * "excessive branch count" has been exceeded: {@value}
- *
- * @see #setBitmapInactiveBranchAgeInDays(int)
- * @since 4.2
- */
- public static final int DEFAULT_BITMAP_INACTIVE_BRANCH_AGE_IN_DAYS = 90;
-
- private int compressionLevel = Deflater.DEFAULT_COMPRESSION;
-
- private boolean reuseDeltas = DEFAULT_REUSE_DELTAS;
-
- private boolean reuseObjects = DEFAULT_REUSE_OBJECTS;
-
- private boolean preserveOldPacks = DEFAULT_PRESERVE_OLD_PACKS;
-
- private boolean prunePreserved = DEFAULT_PRUNE_PRESERVED;
-
- private boolean deltaBaseAsOffset = DEFAULT_DELTA_BASE_AS_OFFSET;
-
- private boolean deltaCompress = DEFAULT_DELTA_COMPRESS;
-
- private int maxDeltaDepth = DEFAULT_MAX_DELTA_DEPTH;
-
- private int deltaSearchWindowSize = DEFAULT_DELTA_SEARCH_WINDOW_SIZE;
-
- private long deltaSearchMemoryLimit;
-
- private long deltaCacheSize = DEFAULT_DELTA_CACHE_SIZE;
-
- private int deltaCacheLimit = DEFAULT_DELTA_CACHE_LIMIT;
-
- private int bigFileThreshold = DEFAULT_BIG_FILE_THRESHOLD;
-
- private int threads;
-
- private Executor executor;
-
- private int indexVersion = DEFAULT_INDEX_VERSION;
-
- private boolean buildBitmaps = DEFAULT_BUILD_BITMAPS;
-
- private int bitmapContiguousCommitCount = DEFAULT_BITMAP_CONTIGUOUS_COMMIT_COUNT;
-
- private int bitmapRecentCommitCount = DEFAULT_BITMAP_RECENT_COMMIT_COUNT;
-
- private int bitmapRecentCommitSpan = DEFAULT_BITMAP_RECENT_COMMIT_SPAN;
-
- private int bitmapDistantCommitSpan = DEFAULT_BITMAP_DISTANT_COMMIT_SPAN;
-
- private int bitmapExcessiveBranchCount = DEFAULT_BITMAP_EXCESSIVE_BRANCH_COUNT;
-
- private int bitmapInactiveBranchAgeInDays = DEFAULT_BITMAP_INACTIVE_BRANCH_AGE_IN_DAYS;
-
- private boolean cutDeltaChains;
-
- /** Create a default configuration. */
- public PackConfig() {
- // Fields are initialized to defaults.
- }
-
- /**
- * Create a configuration honoring the repository's settings.
- *
- * @param db
- * the repository to read settings from. The repository is not
- * retained by the new configuration, instead its settings are
- * copied during the constructor.
- */
- public PackConfig(Repository db) {
- fromConfig(db.getConfig());
- }
-
- /**
- * Create a configuration honoring settings in a {@link Config}.
- *
- * @param cfg
- * the source to read settings from. The source is not retained
- * by the new configuration, instead its settings are copied
- * during the constructor.
- */
- public PackConfig(Config cfg) {
- fromConfig(cfg);
- }
-
- /**
- * Copy an existing configuration to a new instance.
- *
- * @param cfg
- * the source configuration to copy from.
- */
- public PackConfig(PackConfig cfg) {
- this.compressionLevel = cfg.compressionLevel;
- this.reuseDeltas = cfg.reuseDeltas;
- this.reuseObjects = cfg.reuseObjects;
- this.preserveOldPacks = cfg.preserveOldPacks;
- this.prunePreserved = cfg.prunePreserved;
- this.deltaBaseAsOffset = cfg.deltaBaseAsOffset;
- this.deltaCompress = cfg.deltaCompress;
- this.maxDeltaDepth = cfg.maxDeltaDepth;
- this.deltaSearchWindowSize = cfg.deltaSearchWindowSize;
- this.deltaSearchMemoryLimit = cfg.deltaSearchMemoryLimit;
- this.deltaCacheSize = cfg.deltaCacheSize;
- this.deltaCacheLimit = cfg.deltaCacheLimit;
- this.bigFileThreshold = cfg.bigFileThreshold;
- this.threads = cfg.threads;
- this.executor = cfg.executor;
- this.indexVersion = cfg.indexVersion;
- this.buildBitmaps = cfg.buildBitmaps;
- this.bitmapContiguousCommitCount = cfg.bitmapContiguousCommitCount;
- this.bitmapRecentCommitCount = cfg.bitmapRecentCommitCount;
- this.bitmapRecentCommitSpan = cfg.bitmapRecentCommitSpan;
- this.bitmapDistantCommitSpan = cfg.bitmapDistantCommitSpan;
- this.bitmapExcessiveBranchCount = cfg.bitmapExcessiveBranchCount;
- this.bitmapInactiveBranchAgeInDays = cfg.bitmapInactiveBranchAgeInDays;
- this.cutDeltaChains = cfg.cutDeltaChains;
- }
-
- /**
- * Check whether to reuse deltas existing in repository.
- *
- * Default setting: {@value #DEFAULT_REUSE_DELTAS}
- *
- * @return true if object is configured to reuse deltas; false otherwise.
- */
- public boolean isReuseDeltas() {
- return reuseDeltas;
- }
-
- /**
- * Set reuse deltas configuration option for the writer.
- *
- * When enabled, writer will search for delta representation of object in
- * repository and use it if possible. Normally, only deltas with base to
- * another object existing in set of objects to pack will be used. The
- * exception however is thin-packs where the base object may exist on the
- * other side.
- *
- * When raw delta data is directly copied from a pack file, its checksum is
- * computed to verify the data is not corrupt.
- *
- * Default setting: {@value #DEFAULT_REUSE_DELTAS}
- *
- * @param reuseDeltas
- * boolean indicating whether or not try to reuse deltas.
- */
- public void setReuseDeltas(boolean reuseDeltas) {
- this.reuseDeltas = reuseDeltas;
- }
-
- /**
- * Checks whether to reuse existing objects representation in repository.
- *
- * Default setting: {@value #DEFAULT_REUSE_OBJECTS}
- *
- * @return true if writer is configured to reuse objects representation from
- * pack; false otherwise.
- */
- public boolean isReuseObjects() {
- return reuseObjects;
- }
-
- /**
- * Set reuse objects configuration option for the writer.
- *
- * If enabled, writer searches for compressed representation in a pack file.
- * If possible, compressed data is directly copied from such a pack file.
- * Data checksum is verified.
- *
- * Default setting: {@value #DEFAULT_REUSE_OBJECTS}
- *
- * @param reuseObjects
- * boolean indicating whether or not writer should reuse existing
- * objects representation.
- */
- public void setReuseObjects(boolean reuseObjects) {
- this.reuseObjects = reuseObjects;
- }
-
- /**
- * Checks whether to preserve old packs in a preserved directory
- *
- * Default setting: {@value #DEFAULT_PRESERVE_OLD_PACKS}
- *
- * @return true if repacking will preserve old pack files.
- * @since 4.7
- */
- public boolean isPreserveOldPacks() {
- return preserveOldPacks;
- }
-
- /**
- * Set preserve old packs configuration option for repacking.
- *
- * If enabled, old pack files are moved into a preserved subdirectory instead
- * of being deleted
- *
- * Default setting: {@value #DEFAULT_PRESERVE_OLD_PACKS}
- *
- * @param preserveOldPacks
- * boolean indicating whether or not preserve old pack files
- * @since 4.7
- */
- public void setPreserveOldPacks(boolean preserveOldPacks) {
- this.preserveOldPacks = preserveOldPacks;
- }
-
- /**
- * Checks whether to remove preserved pack files in a preserved directory
- *
- * Default setting: {@value #DEFAULT_PRUNE_PRESERVED}
- *
- * @return true if repacking will remove preserved pack files.
- * @since 4.7
- */
- public boolean isPrunePreserved() {
- return prunePreserved;
- }
-
- /**
- * Set prune preserved configuration option for repacking.
- *
- * If enabled, preserved pack files are removed from a preserved subdirectory
- *
- * Default setting: {@value #DEFAULT_PRESERVE_OLD_PACKS}
- *
- * @param prunePreserved
- * boolean indicating whether or not preserve old pack files
- * @since 4.7
- */
- public void setPrunePreserved(boolean prunePreserved) {
- this.prunePreserved = prunePreserved;
- }
-
- /**
- * True if writer can use offsets to point to a delta base.
- *
- * If true the writer may choose to use an offset to point to a delta base
- * in the same pack, this is a newer style of reference that saves space.
- * False if the writer has to use the older (and more compatible style) of
- * storing the full ObjectId of the delta base.
- *
- * Default setting: {@value #DEFAULT_DELTA_BASE_AS_OFFSET}
- *
- * @return true if delta base is stored as an offset; false if it is stored
- * as an ObjectId.
- */
- public boolean isDeltaBaseAsOffset() {
- return deltaBaseAsOffset;
- }
-
- /**
- * Set writer delta base format.
- *
- * Delta base can be written as an offset in a pack file (new approach
- * reducing file size) or as an object id (legacy approach, compatible with
- * old readers).
- *
- * Default setting: {@value #DEFAULT_DELTA_BASE_AS_OFFSET}
- *
- * @param deltaBaseAsOffset
- * boolean indicating whether delta base can be stored as an
- * offset.
- */
- public void setDeltaBaseAsOffset(boolean deltaBaseAsOffset) {
- this.deltaBaseAsOffset = deltaBaseAsOffset;
- }
-
- /**
- * Check whether the writer will create new deltas on the fly.
- *
- * Default setting: {@value #DEFAULT_DELTA_COMPRESS}
- *
- * @return true if the writer will create a new delta when either
- * {@link #isReuseDeltas()} is false, or no suitable delta is
- * available for reuse.
- */
- public boolean isDeltaCompress() {
- return deltaCompress;
- }
-
- /**
- * Set whether or not the writer will create new deltas on the fly.
- *
- * Default setting: {@value #DEFAULT_DELTA_COMPRESS}
- *
- * @param deltaCompress
- * true to create deltas when {@link #isReuseDeltas()} is false,
- * or when a suitable delta isn't available for reuse. Set to
- * false to write whole objects instead.
- */
- public void setDeltaCompress(boolean deltaCompress) {
- this.deltaCompress = deltaCompress;
- }
-
- /**
- * Get maximum depth of delta chain set up for the writer.
- *
- * Generated chains are not longer than this value.
- *
- * Default setting: {@value #DEFAULT_MAX_DELTA_DEPTH}
- *
- * @return maximum delta chain depth.
- */
- public int getMaxDeltaDepth() {
- return maxDeltaDepth;
- }
-
- /**
- * Set up maximum depth of delta chain for the writer.
- *
- * Generated chains are not longer than this value. Too low value causes low
- * compression level, while too big makes unpacking (reading) longer.
- *
- * Default setting: {@value #DEFAULT_MAX_DELTA_DEPTH}
- *
- * @param maxDeltaDepth
- * maximum delta chain depth.
- */
- public void setMaxDeltaDepth(int maxDeltaDepth) {
- this.maxDeltaDepth = maxDeltaDepth;
- }
-
- /**
- * @return true if existing delta chains should be cut at
- * {@link #getMaxDeltaDepth()}. Default is false, allowing existing
- * chains to be of any length.
- * @since 3.0
- */
- public boolean getCutDeltaChains() {
- return cutDeltaChains;
- }
-
- /**
- * Enable cutting existing delta chains at {@link #getMaxDeltaDepth()}.
- *
- * By default this is disabled and existing chains are kept at whatever
- * length a prior packer was configured to create. This allows objects to be
- * packed one with a large depth (for example 250), and later to quickly
- * repack the repository with a shorter depth (such as 50), but reusing the
- * complete delta chains created by the earlier 250 depth.
- *
- * @param cut
- * true to cut existing chains.
- * @since 3.0
- */
- public void setCutDeltaChains(boolean cut) {
- cutDeltaChains = cut;
- }
-
- /**
- * Get the number of objects to try when looking for a delta base.
- *
- * This limit is per thread, if 4 threads are used the actual memory used
- * will be 4 times this value.
- *
- * Default setting: {@value #DEFAULT_DELTA_SEARCH_WINDOW_SIZE}
- *
- * @return the object count to be searched.
- */
- public int getDeltaSearchWindowSize() {
- return deltaSearchWindowSize;
- }
-
- /**
- * Set the number of objects considered when searching for a delta base.
- *
- * Default setting: {@value #DEFAULT_DELTA_SEARCH_WINDOW_SIZE}
- *
- * @param objectCount
- * number of objects to search at once. Must be at least 2.
- */
- public void setDeltaSearchWindowSize(int objectCount) {
- if (objectCount <= 2)
- setDeltaCompress(false);
- else
- deltaSearchWindowSize = objectCount;
- }
-
- /**
- * Get maximum number of bytes to put into the delta search window.
- *
- * Default setting is 0, for an unlimited amount of memory usage. Actual
- * memory used is the lower limit of either this setting, or the sum of
- * space used by at most {@link #getDeltaSearchWindowSize()} objects.
- *
- * This limit is per thread, if 4 threads are used the actual memory limit
- * will be 4 times this value.
- *
- * @return the memory limit.
- */
- public long getDeltaSearchMemoryLimit() {
- return deltaSearchMemoryLimit;
- }
-
- /**
- * Set the maximum number of bytes to put into the delta search window.
- *
- * Default setting is 0, for an unlimited amount of memory usage. If the
- * memory limit is reached before {@link #getDeltaSearchWindowSize()} the
- * window size is temporarily lowered.
- *
- * @param memoryLimit
- * Maximum number of bytes to load at once, 0 for unlimited.
- */
- public void setDeltaSearchMemoryLimit(long memoryLimit) {
- deltaSearchMemoryLimit = memoryLimit;
- }
-
- /**
- * Get the size of the in-memory delta cache.
- *
- * This limit is for the entire writer, even if multiple threads are used.
- *
- * Default setting: {@value #DEFAULT_DELTA_CACHE_SIZE}
- *
- * @return maximum number of bytes worth of delta data to cache in memory.
- * If 0 the cache is infinite in size (up to the JVM heap limit
- * anyway). A very tiny size such as 1 indicates the cache is
- * effectively disabled.
- */
- public long getDeltaCacheSize() {
- return deltaCacheSize;
- }
-
- /**
- * Set the maximum number of bytes of delta data to cache.
- *
- * During delta search, up to this many bytes worth of small or hard to
- * compute deltas will be stored in memory. This cache speeds up writing by
- * allowing the cached entry to simply be dumped to the output stream.
- *
- * Default setting: {@value #DEFAULT_DELTA_CACHE_SIZE}
- *
- * @param size
- * number of bytes to cache. Set to 0 to enable an infinite
- * cache, set to 1 (an impossible size for any delta) to disable
- * the cache.
- */
- public void setDeltaCacheSize(long size) {
- deltaCacheSize = size;
- }
-
- /**
- * Maximum size in bytes of a delta to cache.
- *
- * Default setting: {@value #DEFAULT_DELTA_CACHE_LIMIT}
- *
- * @return maximum size (in bytes) of a delta that should be cached.
- */
- public int getDeltaCacheLimit() {
- return deltaCacheLimit;
- }
-
- /**
- * Set the maximum size of a delta that should be cached.
- *
- * During delta search, any delta smaller than this size will be cached, up
- * to the {@link #getDeltaCacheSize()} maximum limit. This speeds up writing
- * by allowing these cached deltas to be output as-is.
- *
- * Default setting: {@value #DEFAULT_DELTA_CACHE_LIMIT}
- *
- * @param size
- * maximum size (in bytes) of a delta to be cached.
- */
- public void setDeltaCacheLimit(int size) {
- deltaCacheLimit = size;
- }
-
- /**
- * Get the maximum file size that will be delta compressed.
- *
- * Files bigger than this setting will not be delta compressed, as they are
- * more than likely already highly compressed binary data files that do not
- * delta compress well, such as MPEG videos.
- *
- * Default setting: {@value #DEFAULT_BIG_FILE_THRESHOLD}
- *
- * @return the configured big file threshold.
- */
- public int getBigFileThreshold() {
- return bigFileThreshold;
- }
-
- /**
- * Set the maximum file size that should be considered for deltas.
- *
- * Default setting: {@value #DEFAULT_BIG_FILE_THRESHOLD}
- *
- * @param bigFileThreshold
- * the limit, in bytes.
- */
- public void setBigFileThreshold(int bigFileThreshold) {
- this.bigFileThreshold = bigFileThreshold;
- }
-
- /**
- * Get the compression level applied to objects in the pack.
- *
- * Default setting: {@value java.util.zip.Deflater#DEFAULT_COMPRESSION}
- *
- * @return current compression level, see {@link java.util.zip.Deflater}.
- */
- public int getCompressionLevel() {
- return compressionLevel;
- }
-
- /**
- * Set the compression level applied to objects in the pack.
- *
- * Default setting: {@value java.util.zip.Deflater#DEFAULT_COMPRESSION}
- *
- * @param level
- * compression level, must be a valid level recognized by the
- * {@link java.util.zip.Deflater} class.
- */
- public void setCompressionLevel(int level) {
- compressionLevel = level;
- }
-
- /**
- * Get the number of threads used during delta compression.
- *
- * Default setting: 0 (auto-detect processors)
- *
- * @return number of threads used for delta compression. 0 will auto-detect
- * the threads to the number of available processors.
- */
- public int getThreads() {
- return threads;
- }
-
- /**
- * Set the number of threads to use for delta compression.
- *
- * During delta compression, if there are enough objects to be considered
- * the writer will start up concurrent threads and allow them to compress
- * different sections of the repository concurrently.
- *
- * An application thread pool can be set by {@link #setExecutor(Executor)}.
- * If not set a temporary pool will be created by the writer, and torn down
- * automatically when compression is over.
- *
- * Default setting: 0 (auto-detect processors)
- *
- * @param threads
- * number of threads to use. If <= 0 the number of available
- * processors for this JVM is used.
- */
- public void setThreads(int threads) {
- this.threads = threads;
- }
-
- /** @return the preferred thread pool to execute delta search on. */
- public Executor getExecutor() {
- return executor;
- }
-
- /**
- * Set the executor to use when using threads.
- *
- * During delta compression if the executor is non-null jobs will be queued
- * up on it to perform delta compression in parallel. Aside from setting the
- * executor, the caller must set {@link #setThreads(int)} to enable threaded
- * delta search.
- *
- * @param executor
- * executor to use for threads. Set to null to create a temporary
- * executor just for the writer.
- */
- public void setExecutor(Executor executor) {
- this.executor = executor;
- }
-
- /**
- * Get the pack index file format version this instance creates.
- *
- * Default setting: {@value #DEFAULT_INDEX_VERSION}
- *
- * @return the index version, the special version 0 designates the oldest
- * (most compatible) format available for the objects.
- * @see PackIndexWriter
- */
- public int getIndexVersion() {
- return indexVersion;
- }
-
- /**
- * Set the pack index file format version this instance will create.
- *
- * Default setting: {@value #DEFAULT_INDEX_VERSION}
- *
- * @param version
- * the version to write. The special version 0 designates the
- * oldest (most compatible) format available for the objects.
- * @see PackIndexWriter
- */
- public void setIndexVersion(int version) {
- indexVersion = version;
- }
-
- /**
- * True if writer is allowed to build bitmaps for indexes.
- *
- * Default setting: {@value #DEFAULT_BUILD_BITMAPS}
- *
- * @return true if delta base is the writer can choose to output an index
- * with bitmaps.
- * @since 3.0
- */
- public boolean isBuildBitmaps() {
- return buildBitmaps;
- }
-
- /**
- * Set writer to allow building bitmaps for supported pack files.
- *
- * Index files can include bitmaps to speed up future ObjectWalks.
- *
- * Default setting: {@value #DEFAULT_BUILD_BITMAPS}
- *
- * @param buildBitmaps
- * boolean indicating whether bitmaps may be included in the
- * index.
- * @since 3.0
- */
- public void setBuildBitmaps(boolean buildBitmaps) {
- this.buildBitmaps = buildBitmaps;
- }
-
- /**
- * Get the count of most recent commits for which to build bitmaps.
- *
- * Default setting: {@value #DEFAULT_BITMAP_CONTIGUOUS_COMMIT_COUNT}
- *
- * @return the count of most recent commits for which to build bitmaps
- * @since 4.2
- */
- public int getBitmapContiguousCommitCount() {
- return bitmapContiguousCommitCount;
- }
-
- /**
- * Set the count of most recent commits for which to build bitmaps.
- *
- * Default setting: {@value #DEFAULT_BITMAP_CONTIGUOUS_COMMIT_COUNT}
- *
- * @param count
- * the count of most recent commits for which to build bitmaps
- * @since 4.2
- */
- public void setBitmapContiguousCommitCount(int count) {
- bitmapContiguousCommitCount = count;
- }
-
- /**
- * Get the count at which to switch from "bitmapRecentCommitSpan" to
- * "bitmapDistantCommitSpan".
- *
- * Default setting: {@value #DEFAULT_BITMAP_RECENT_COMMIT_COUNT}
- *
- * @return the count for switching between recent and distant spans
- * @since 4.2
- */
- public int getBitmapRecentCommitCount() {
- return bitmapRecentCommitCount;
- }
-
- /**
- * Set the count at which to switch from "bitmapRecentCommitSpan" to
- * "bitmapDistantCommitSpan".
- *
- * Default setting: {@value #DEFAULT_BITMAP_RECENT_COMMIT_COUNT}
- *
- * @param count
- * the count for switching between recent and distant spans
- * @since 4.2
- */
- public void setBitmapRecentCommitCount(int count) {
- bitmapRecentCommitCount = count;
- }
-
- /**
- * Get the span of commits when building bitmaps for recent history.
- *
- * Default setting: {@value #DEFAULT_BITMAP_RECENT_COMMIT_SPAN}
- *
- * @return the span of commits when building bitmaps for recent history
- * @since 4.2
- */
- public int getBitmapRecentCommitSpan() {
- return bitmapRecentCommitSpan;
- }
-
- /**
- * Set the span of commits when building bitmaps for recent history.
- *
- * Default setting: {@value #DEFAULT_BITMAP_RECENT_COMMIT_SPAN}
- *
- * @param span
- * the span of commits when building bitmaps for recent history
- * @since 4.2
- */
- public void setBitmapRecentCommitSpan(int span) {
- bitmapRecentCommitSpan = span;
- }
-
- /**
- * Get the span of commits when building bitmaps for distant history.
- *
- * Default setting: {@value #DEFAULT_BITMAP_DISTANT_COMMIT_SPAN}
- *
- * @return the span of commits when building bitmaps for distant history
- * @since 4.2
- */
- public int getBitmapDistantCommitSpan() {
- return bitmapDistantCommitSpan;
- }
-
- /**
- * Set the span of commits when building bitmaps for distant history.
- *
- * Default setting: {@value #DEFAULT_BITMAP_DISTANT_COMMIT_SPAN}
- *
- * @param span
- * the span of commits when building bitmaps for distant history
- * @since 4.2
- */
- public void setBitmapDistantCommitSpan(int span) {
- bitmapDistantCommitSpan = span;
- }
-
- /**
- * Get the count of branches deemed "excessive". If the count of branches in
- * a repository exceeds this number and bitmaps are enabled, "inactive"
- * branches will have fewer bitmaps than "active" branches.
- *
- * Default setting: {@value #DEFAULT_BITMAP_EXCESSIVE_BRANCH_COUNT}
- *
- * @return the count of branches deemed "excessive"
- * @since 4.2
- */
- public int getBitmapExcessiveBranchCount() {
- return bitmapExcessiveBranchCount;
- }
-
- /**
- * Set the count of branches deemed "excessive". If the count of branches in
- * a repository exceeds this number and bitmaps are enabled, "inactive"
- * branches will have fewer bitmaps than "active" branches.
- *
- * Default setting: {@value #DEFAULT_BITMAP_EXCESSIVE_BRANCH_COUNT}
- *
- * @param count
- * the count of branches deemed "excessive"
- * @since 4.2
- */
- public void setBitmapExcessiveBranchCount(int count) {
- bitmapExcessiveBranchCount = count;
- }
-
- /**
- * Get the the age in days that marks a branch as "inactive".
- *
- * Default setting: {@value #DEFAULT_BITMAP_INACTIVE_BRANCH_AGE_IN_DAYS}
- *
- * @return the age in days that marks a branch as "inactive"
- * @since 4.2
- */
- public int getBitmapInactiveBranchAgeInDays() {
- return bitmapInactiveBranchAgeInDays;
- }
-
- /**
- * Set the the age in days that marks a branch as "inactive".
- *
- * Default setting: {@value #DEFAULT_BITMAP_INACTIVE_BRANCH_AGE_IN_DAYS}
- *
- * @param ageInDays
- * the age in days that marks a branch as "inactive"
- * @since 4.2
- */
- public void setBitmapInactiveBranchAgeInDays(int ageInDays) {
- bitmapInactiveBranchAgeInDays = ageInDays;
- }
-
- /**
- * Update properties by setting fields from the configuration.
- *
- * If a property's corresponding variable is not defined in the supplied
- * configuration, then it is left unmodified.
- *
- * @param rc
- * configuration to read properties from.
- */
- public void fromConfig(final Config rc) {
- setMaxDeltaDepth(rc.getInt("pack", "depth", getMaxDeltaDepth())); //$NON-NLS-1$ //$NON-NLS-2$
- setDeltaSearchWindowSize(rc.getInt(
- "pack", "window", getDeltaSearchWindowSize())); //$NON-NLS-1$ //$NON-NLS-2$
- setDeltaSearchMemoryLimit(rc.getLong(
- "pack", "windowmemory", getDeltaSearchMemoryLimit())); //$NON-NLS-1$ //$NON-NLS-2$
- setDeltaCacheSize(rc.getLong(
- "pack", "deltacachesize", getDeltaCacheSize())); //$NON-NLS-1$ //$NON-NLS-2$
- setDeltaCacheLimit(rc.getInt(
- "pack", "deltacachelimit", getDeltaCacheLimit())); //$NON-NLS-1$ //$NON-NLS-2$
- setCompressionLevel(rc.getInt("pack", "compression", //$NON-NLS-1$ //$NON-NLS-2$
- rc.getInt("core", "compression", getCompressionLevel()))); //$NON-NLS-1$ //$NON-NLS-2$
- setIndexVersion(rc.getInt("pack", "indexversion", getIndexVersion())); //$NON-NLS-1$ //$NON-NLS-2$
- setBigFileThreshold(rc.getInt(
- "core", "bigfilethreshold", getBigFileThreshold())); //$NON-NLS-1$ //$NON-NLS-2$
- setThreads(rc.getInt("pack", "threads", getThreads())); //$NON-NLS-1$ //$NON-NLS-2$
-
- // These variables aren't standardized
- //
- setReuseDeltas(rc.getBoolean("pack", "reusedeltas", isReuseDeltas())); //$NON-NLS-1$ //$NON-NLS-2$
- setReuseObjects(
- rc.getBoolean("pack", "reuseobjects", isReuseObjects())); //$NON-NLS-1$ //$NON-NLS-2$
- setDeltaCompress(
- rc.getBoolean("pack", "deltacompression", isDeltaCompress())); //$NON-NLS-1$ //$NON-NLS-2$
- setCutDeltaChains(
- rc.getBoolean("pack", "cutdeltachains", getCutDeltaChains())); //$NON-NLS-1$ //$NON-NLS-2$
- setBuildBitmaps(
- rc.getBoolean("pack", "buildbitmaps", isBuildBitmaps())); //$NON-NLS-1$ //$NON-NLS-2$
- setBitmapContiguousCommitCount(
- rc.getInt("pack", "bitmapcontiguouscommitcount", //$NON-NLS-1$ //$NON-NLS-2$
- getBitmapContiguousCommitCount()));
- setBitmapRecentCommitCount(rc.getInt("pack", "bitmaprecentcommitcount", //$NON-NLS-1$ //$NON-NLS-2$
- getBitmapRecentCommitCount()));
- setBitmapRecentCommitSpan(rc.getInt("pack", "bitmaprecentcommitspan", //$NON-NLS-1$ //$NON-NLS-2$
- getBitmapRecentCommitSpan()));
- setBitmapDistantCommitSpan(rc.getInt("pack", "bitmapdistantcommitspan", //$NON-NLS-1$ //$NON-NLS-2$
- getBitmapDistantCommitSpan()));
- setBitmapExcessiveBranchCount(rc.getInt("pack", //$NON-NLS-1$
- "bitmapexcessivebranchcount", getBitmapExcessiveBranchCount())); //$NON-NLS-1$
- setBitmapInactiveBranchAgeInDays(
- rc.getInt("pack", "bitmapinactivebranchageindays", //$NON-NLS-1$ //$NON-NLS-2$
- getBitmapInactiveBranchAgeInDays()));
- }
-
- public String toString() {
- final StringBuilder b = new StringBuilder();
- b.append("maxDeltaDepth=").append(getMaxDeltaDepth()); //$NON-NLS-1$
- b.append(", deltaSearchWindowSize=").append(getDeltaSearchWindowSize()); //$NON-NLS-1$
- b.append(", deltaSearchMemoryLimit=") //$NON-NLS-1$
- .append(getDeltaSearchMemoryLimit());
- b.append(", deltaCacheSize=").append(getDeltaCacheSize()); //$NON-NLS-1$
- b.append(", deltaCacheLimit=").append(getDeltaCacheLimit()); //$NON-NLS-1$
- b.append(", compressionLevel=").append(getCompressionLevel()); //$NON-NLS-1$
- b.append(", indexVersion=").append(getIndexVersion()); //$NON-NLS-1$
- b.append(", bigFileThreshold=").append(getBigFileThreshold()); //$NON-NLS-1$
- b.append(", threads=").append(getThreads()); //$NON-NLS-1$
- b.append(", reuseDeltas=").append(isReuseDeltas()); //$NON-NLS-1$
- b.append(", reuseObjects=").append(isReuseObjects()); //$NON-NLS-1$
- b.append(", deltaCompress=").append(isDeltaCompress()); //$NON-NLS-1$
- b.append(", buildBitmaps=").append(isBuildBitmaps()); //$NON-NLS-1$
- b.append(", bitmapContiguousCommitCount=") //$NON-NLS-1$
- .append(getBitmapContiguousCommitCount());
- b.append(", bitmapRecentCommitCount=") //$NON-NLS-1$
- .append(getBitmapRecentCommitCount());
- b.append(", bitmapRecentCommitSpan=") //$NON-NLS-1$
- .append(getBitmapRecentCommitSpan());
- b.append(", bitmapDistantCommitSpan=") //$NON-NLS-1$
- .append(getBitmapDistantCommitSpan());
- b.append(", bitmapExcessiveBranchCount=") //$NON-NLS-1$
- .append(getBitmapExcessiveBranchCount());
- b.append(", bitmapInactiveBranchAge=") //$NON-NLS-1$
- .append(getBitmapInactiveBranchAgeInDays());
- return b.toString();
- }
- }
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