Eclipse JGit: Java implementation of Git 6.5.0

Features

• PackObjectSizeIndex: Introduce an interface for the Object-size index. This index returns the inflated size of an object. Not all objects are indexed (to limit memory usage). This implementation indexes only blobs (no trees, nor
  
      commits) *above* certain size threshold (configurable).
• PackIndex: expose the position of an object-id in the index via #findPosition(object-id)
• Add pack options to preserve and prune old pack files
  
  - pack.preserveOldPacks
  
  - pack.prunePreserved
• 573390 UploadPack: support allow-any-sha1-in-want option. When both uploadPack.allowFilter and uploadPack.allowAnySHA1InWant are true, jgit supports partial clone.
• UploadPack: advertise object-info command if enabled
• 475615 [pgm] Fetch-CLI: add support for shallow clone/fetch
• Acquire file lock "gc.pid" before running gc to prevent concurrent gc on the same repository
• BatchingProgressMonitor: expose time spent per task. Display elapsed time per task if enabled via API or if system property or environment variable GIT_TRACE_PERFORMANCE is set to "true".
• 576165 Add TernarySearchTree to be used to implement a ref cache

574368 Commit graph support

• Add Commit Graph stats fields into DfsReaderIoStats
• RevWalk: integrate commit-graph with commit parsing
• GC: disable writing commit-graph for shallow repos
• CommitGraph: teach ObjectReader to get commit-graph
• CommitGraph: add commit-graph for FileObjectDatabase
• GC: Write commit-graph files when gc
• CommitGraph: add core.commitGraph config
• CommitGraph: implement commit-graph read
• CommitGraph: implement commit-graph writer
• DfsPackFile/DfsGC: Write commit graphs and expose in pack

Incompatible changes

• Replace config option pull.rebase=preserve by pull.rebase=merges. This follows native git which removed the "preserve" option in git 2.34.

Performance Improvements

• Add option to perform PackedBatchRefUpdate without locking loose refs
• Shortcut during git fetch for avoiding looping through all local refs for refs pointing to non-commit objects
• Allow the exclusions of refs prefixes from bitmap index generation
• 581267 PackWriterBitmapPreparer: do not include annotated tags in bitmap
• Speedup jgit GC when listing objects referenced from reflogs
• Cache trustFolderStat/trustPackedRefsStat value per-instance. Instead of re-reading the config every time the methods using these values were called, cache the config value at the time of instance construction.
• Introduce core.trustPackedRefsStat config. Currently, we always read packed-refs file when 'trustFolderStat' is false. Introduce a new config 'trustPackedRefsStat' which takes precedence over 'trustFolderStat' when reading packed refs. When repositories are stored on NFS and option 'trustFolderStat=false' was used now 'trustPackedRefsStat=after_open' can be used to get some performance improvement as it refreshes the file attributes of packed-refs (at least on some NFS clients) before considering it.
• Gc#deleteOrphans: avoid dependence on PackExt alphabetical ordering

Bug Fixes

• [sshd] Fix calculation of timeout in AbstractClientProxyConnector
• UploadPack: consume delimiter in object-info command causing "PackProtocolException: unexpected <empty string>"
• FetchCommand: fix fetchSubmodules to work on a Ref to a blob
• BatchingProgressMonitor: avoid int overflow when computing percentage
• 581317 Refresh 'objects' dir and retry if a loose object is not found. A new loose object may not be immediately visible on a NFS client if it was created on another client. Refreshing the 'objects' dir and trying again can help work around the NFS behavior.
• 581234 PatchApplier: fix handling of last newline in text patch
• 535919 Fix crashes on rare combination of file names

Build and Release Engineering

• Update Orbit to R20230302014618 for 2023-03

Update

• com.google.gson to 2.10.1.v20230109-0753
• org.apache.commons.compress to 1.22.0.v20221207-1049
• org.apache.httpcomponents.httpclient to 4.5.14.v20221207-1049
• org.apache.httpcomponents.httpcore to 4.4.16.v20221207-1049
• jetty to 10.0.13

Upgrade maven plugins

• build-helper-maven-plugin to 3.3.0
• eclipse-jarsigner-plugin to 1.3.5
• jacoco-maven-plugin to 0.8.8
• japicmp to 0.17.1
• maven-antrun-plugin to 3.1.0
• maven-clean-plugin to 3.2.0
• maven-compiler-plugin to 3.10.1
• maven-dependency-plugin to 3.5.0
• maven-deploy-plugin to 3.0.0
• maven-enforcer-plugin to 3.1.0
• maven-install-plugin to 3.1.0
• maven-jar-plugin to 3.3.0
• maven-javadoc-plugin to 3.4.1
• maven-jxr-plugin to 3.3.0
• maven-pmd-plugin to 3.20.0
• maven-project-info-reports-plugin to 3.4.2
• maven-resources-plugin to 3.3.0
• maven-shade-plugin to 3.4.1
• maven-site-plugin to 4.0.0-M4
• maven-surefire-plugin to 3.0.0-M8
• spotbugs-maven-plugin to 4.7.3.0
• spring-boot-maven-plugin to 2.7.7