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@ -64,6 +64,7 @@ import java.util.HashMap;
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import java.util.HashSet; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Objects; |
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import java.util.Set; |
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import java.util.concurrent.atomic.AtomicReference; |
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@ -117,6 +118,8 @@ public class ObjectDirectory extends FileObjectDatabase {
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/** Maximum number of candidates offered as resolutions of abbreviation. */ |
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private static final int RESOLVE_ABBREV_LIMIT = 256; |
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private final AlternateHandle handle = new AlternateHandle(this); |
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private final Config config; |
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private final File objects; |
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@ -294,26 +297,38 @@ public class ObjectDirectory extends FileObjectDatabase {
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@Override |
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public boolean has(AnyObjectId objectId) { |
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return unpackedObjectCache.isUnpacked(objectId) |
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|| hasPackedInSelfOrAlternate(objectId) |
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|| hasLooseInSelfOrAlternate(objectId); |
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|| hasPackedInSelfOrAlternate(objectId, null) |
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|| hasLooseInSelfOrAlternate(objectId, null); |
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} |
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private boolean hasPackedInSelfOrAlternate(AnyObjectId objectId) { |
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if (hasPackedObject(objectId)) |
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private boolean hasPackedInSelfOrAlternate(AnyObjectId objectId, |
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Set<AlternateHandle.Id> skips) { |
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if (hasPackedObject(objectId)) { |
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return true; |
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} |
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skips = addMe(skips); |
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for (AlternateHandle alt : myAlternates()) { |
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if (alt.db.hasPackedInSelfOrAlternate(objectId)) |
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return true; |
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if (!skips.contains(alt.getId())) { |
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if (alt.db.hasPackedInSelfOrAlternate(objectId, skips)) { |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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private boolean hasLooseInSelfOrAlternate(AnyObjectId objectId) { |
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if (fileFor(objectId).exists()) |
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private boolean hasLooseInSelfOrAlternate(AnyObjectId objectId, |
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Set<AlternateHandle.Id> skips) { |
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if (fileFor(objectId).exists()) { |
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return true; |
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} |
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skips = addMe(skips); |
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for (AlternateHandle alt : myAlternates()) { |
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if (alt.db.hasLooseInSelfOrAlternate(objectId)) |
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return true; |
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if (!skips.contains(alt.getId())) { |
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if (alt.db.hasLooseInSelfOrAlternate(objectId, skips)) { |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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@ -340,6 +355,12 @@ public class ObjectDirectory extends FileObjectDatabase {
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@Override |
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void resolve(Set<ObjectId> matches, AbbreviatedObjectId id) |
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throws IOException { |
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resolve(matches, id, null); |
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} |
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private void resolve(Set<ObjectId> matches, AbbreviatedObjectId id, |
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Set<AlternateHandle.Id> skips) |
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throws IOException { |
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// Go through the packs once. If we didn't find any resolutions
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// scan for new packs and check once more.
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int oldSize = matches.size(); |
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@ -376,10 +397,14 @@ public class ObjectDirectory extends FileObjectDatabase {
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} |
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} |
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skips = addMe(skips); |
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for (AlternateHandle alt : myAlternates()) { |
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alt.db.resolve(matches, id); |
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if (matches.size() > RESOLVE_ABBREV_LIMIT) |
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return; |
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if (!skips.contains(alt.getId())) { |
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alt.db.resolve(matches, id, skips); |
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if (matches.size() > RESOLVE_ABBREV_LIMIT) { |
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return; |
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} |
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} |
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} |
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} |
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@ -388,37 +413,50 @@ public class ObjectDirectory extends FileObjectDatabase {
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throws IOException { |
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if (unpackedObjectCache.isUnpacked(objectId)) { |
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ObjectLoader ldr = openLooseObject(curs, objectId); |
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if (ldr != null) |
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if (ldr != null) { |
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return ldr; |
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} |
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} |
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ObjectLoader ldr = openPackedFromSelfOrAlternate(curs, objectId); |
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if (ldr != null) |
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ObjectLoader ldr = openPackedFromSelfOrAlternate(curs, objectId, null); |
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if (ldr != null) { |
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return ldr; |
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return openLooseFromSelfOrAlternate(curs, objectId); |
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} |
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return openLooseFromSelfOrAlternate(curs, objectId, null); |
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} |
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private ObjectLoader openPackedFromSelfOrAlternate(WindowCursor curs, |
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AnyObjectId objectId) { |
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AnyObjectId objectId, Set<AlternateHandle.Id> skips) { |
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ObjectLoader ldr = openPackedObject(curs, objectId); |
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if (ldr != null) |
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if (ldr != null) { |
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return ldr; |
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} |
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skips = addMe(skips); |
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for (AlternateHandle alt : myAlternates()) { |
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ldr = alt.db.openPackedFromSelfOrAlternate(curs, objectId); |
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if (ldr != null) |
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return ldr; |
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if (!skips.contains(alt.getId())) { |
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ldr = alt.db.openPackedFromSelfOrAlternate(curs, objectId, skips); |
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if (ldr != null) { |
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return ldr; |
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} |
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} |
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} |
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return null; |
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} |
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private ObjectLoader openLooseFromSelfOrAlternate(WindowCursor curs, |
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AnyObjectId objectId) throws IOException { |
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AnyObjectId objectId, Set<AlternateHandle.Id> skips) |
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throws IOException { |
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ObjectLoader ldr = openLooseObject(curs, objectId); |
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if (ldr != null) |
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if (ldr != null) { |
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return ldr; |
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} |
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skips = addMe(skips); |
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for (AlternateHandle alt : myAlternates()) { |
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ldr = alt.db.openLooseFromSelfOrAlternate(curs, objectId); |
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if (ldr != null) |
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return ldr; |
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if (!skips.contains(alt.getId())) { |
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ldr = alt.db.openLooseFromSelfOrAlternate(curs, objectId, skips); |
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if (ldr != null) { |
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return ldr; |
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} |
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} |
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} |
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return null; |
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} |
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@ -469,37 +507,49 @@ public class ObjectDirectory extends FileObjectDatabase {
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throws IOException { |
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if (unpackedObjectCache.isUnpacked(id)) { |
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long len = getLooseObjectSize(curs, id); |
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if (0 <= len) |
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if (0 <= len) { |
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return len; |
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} |
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} |
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long len = getPackedSizeFromSelfOrAlternate(curs, id); |
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if (0 <= len) |
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long len = getPackedSizeFromSelfOrAlternate(curs, id, null); |
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if (0 <= len) { |
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return len; |
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return getLooseSizeFromSelfOrAlternate(curs, id); |
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} |
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return getLooseSizeFromSelfOrAlternate(curs, id, null); |
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} |
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private long getPackedSizeFromSelfOrAlternate(WindowCursor curs, |
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AnyObjectId id) { |
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AnyObjectId id, Set<AlternateHandle.Id> skips) { |
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long len = getPackedObjectSize(curs, id); |
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if (0 <= len) |
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if (0 <= len) { |
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return len; |
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} |
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skips = addMe(skips); |
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for (AlternateHandle alt : myAlternates()) { |
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len = alt.db.getPackedSizeFromSelfOrAlternate(curs, id); |
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if (0 <= len) |
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return len; |
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if (!skips.contains(alt.getId())) { |
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len = alt.db.getPackedSizeFromSelfOrAlternate(curs, id, skips); |
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if (0 <= len) { |
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return len; |
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} |
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} |
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} |
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return -1; |
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} |
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private long getLooseSizeFromSelfOrAlternate(WindowCursor curs, |
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AnyObjectId id) throws IOException { |
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AnyObjectId id, Set<AlternateHandle.Id> skips) throws IOException { |
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long len = getLooseObjectSize(curs, id); |
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if (0 <= len) |
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if (0 <= len) { |
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return len; |
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} |
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skips = addMe(skips); |
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for (AlternateHandle alt : myAlternates()) { |
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len = alt.db.getLooseSizeFromSelfOrAlternate(curs, id); |
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if (0 <= len) |
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return len; |
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if (!skips.contains(alt.getId())) { |
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len = alt.db.getLooseSizeFromSelfOrAlternate(curs, id, skips); |
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if (0 <= len) { |
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return len; |
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} |
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} |
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} |
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return -1; |
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} |
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@ -546,7 +596,12 @@ public class ObjectDirectory extends FileObjectDatabase {
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@Override |
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void selectObjectRepresentation(PackWriter packer, ObjectToPack otp, |
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WindowCursor curs) throws IOException { |
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WindowCursor curs) throws IOException { |
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selectObjectRepresentation(packer, otp, curs, null); |
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} |
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private void selectObjectRepresentation(PackWriter packer, ObjectToPack otp, |
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WindowCursor curs, Set<AlternateHandle.Id> skips) throws IOException { |
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PackList pList = packList.get(); |
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SEARCH: for (;;) { |
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for (final PackFile p : pList.packs) { |
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@ -567,8 +622,12 @@ public class ObjectDirectory extends FileObjectDatabase {
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break SEARCH; |
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} |
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for (AlternateHandle h : myAlternates()) |
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h.db.selectObjectRepresentation(packer, otp, curs); |
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skips = addMe(skips); |
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for (AlternateHandle h : myAlternates()) { |
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if (!skips.contains(h.getId())) { |
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h.db.selectObjectRepresentation(packer, otp, curs, skips); |
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} |
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} |
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} |
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private void handlePackError(IOException e, PackFile p) { |
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@ -930,6 +989,14 @@ public class ObjectDirectory extends FileObjectDatabase {
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return alt; |
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} |
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Set<AlternateHandle.Id> addMe(Set<AlternateHandle.Id> skips) { |
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if (skips == null) { |
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skips = new HashSet<>(); |
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} |
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skips.add(handle.getId()); |
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return skips; |
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} |
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private AlternateHandle[] loadAlternates() throws IOException { |
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final List<AlternateHandle> l = new ArrayList<>(4); |
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final BufferedReader br = open(alternatesFile); |
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@ -996,6 +1063,38 @@ public class ObjectDirectory extends FileObjectDatabase {
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} |
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static class AlternateHandle { |
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static class Id { |
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String alternateId; |
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public Id(File object) { |
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try { |
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this.alternateId = object.getCanonicalPath(); |
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} catch (Exception e) { |
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alternateId = null; |
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} |
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} |
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@Override |
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public boolean equals(Object o) { |
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if (o == this) { |
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return true; |
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} |
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if (o == null || !(o instanceof Id)) { |
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return false; |
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} |
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Id aId = (Id) o; |
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return Objects.equals(alternateId, aId.alternateId); |
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} |
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@Override |
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public int hashCode() { |
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if (alternateId == null) { |
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return 1; |
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} |
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return alternateId.hashCode(); |
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} |
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} |
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final ObjectDirectory db; |
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AlternateHandle(ObjectDirectory db) { |
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@ -1005,6 +1104,10 @@ public class ObjectDirectory extends FileObjectDatabase {
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void close() { |
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db.close(); |
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} |
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public Id getId(){ |
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return db.getAlternateId(); |
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} |
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} |
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static class AlternateRepository extends AlternateHandle { |
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@ -1029,4 +1132,8 @@ public class ObjectDirectory extends FileObjectDatabase {
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CachedObjectDirectory newCachedFileObjectDatabase() { |
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return new CachedObjectDirectory(this); |
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} |
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AlternateHandle.Id getAlternateId() { |
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return new AlternateHandle.Id(objects); |
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} |
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} |
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