NexusCloner

Repository cloning tool for nexus

Table of Contents:

• Download
• Build
• Usage examples
  • One repository
  • Two and more repositories
  • Path filtering
• Testing
• Usage page

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Download

Check releases. There are windows, linux, macos binaries available for downloading.
Also you can download docker image from ghcr.io/MindHunter86/NexusCloner (github package registry). Read more in repository packages page.

Build

Base build

go build -ldflags="-s -w" -o $GOPATH/bin/NexusCloner

After all building processes u may compress the application with UPX

upx -9 -k $GOPATH/bin/NexusCloner

Usage examples

One repository

Simple task - clone reponame from nexus1.example.com to nexus2.example.com:

./NexusCloner https://nexus1.example.com/reponame https://nexus2.example.com/reponame

If your repositories require authentication, you can use user:pass data in URL format:

./NexusCloner https://username:[email protected]/reponame https://username:[email protected]/reponame

If your repositories have selfsign certificate, please, use parameter --http-client-insecure

If your repositories are slow, or you have big files, that requires long downloading use --http-client-timeout.

Two and more repositories

For the first, you need to prepare file with repository names for migration.

For example:

cat <<-EOF | tee repositories.txt
repository_name1
repository_name2
repository_name3
repository_name4
repository_name5
EOF

After that, you can use these small hack for multi-thread sync:

cat repositories.txt | xargs -n1 | xargs -ri -P4 https://nexus1.example.com/{} https://nexus2.example.com/{}

-P4 in example above is thread count. Modify this argument if you need.

Path filtering

Sometimes you need clone repository particularly. There is --path-filter for this tasks. The variable is requires valid regexp for further filtering.

Example. You have some repository with tree of artifacts:

com/example/internal/artifact1
com/example/internal/artifact2
com/example/public/artifact1
com/example/public/artifact2
com/example/public/artifact3
com/example/public/other1
com/example/public/other2
com/example/public/other3

And you need sync ONLY public data. Your command will be:

./NexusCloner --path-filter "com/example/public" https://nexus1.example.com/reponame https://nexus2.example.com/reponame

Or you need sync ONLY artifacts from public path:

./NexusCloner --path-filter "com/example/public/artifacts.*" https://nexus1.example.com/reponame https://nexus2.example.com/reponame

With regexp you can do any magic.

Testing

There is no test files, sorry =(

Known issues

Usage page

NAME:
   NexusCloner - Repository cloning tool for nexus

USAGE:
   main [global options] command [command options] [arguments...]

AUTHOR:
   Vadimka K. <[email protected]>

COMMANDS:
     help, h  Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --verbose LEVEL, -v LEVEL      Verbose LEVEL (value from 5(debug) to 0(panic) and -1 for log disabling(quite mode)) (default: 4)
   --quite, -q                    Flag is equivalent to verbose -1
   --http-client-timeout TIMEOUT  Internal HTTP client connection TIMEOUT (format: 1000ms, 1s) (default: 10s)
   --http-client-insecure         Flag for TLS certificate verification disabling
   --temp-path-prefix directory   Define prefix for temporary directory. If not defined, UNIX or WIN default will be used.
   --temp-path-save               Flag for saving temp path content before program close. Flag for debugging only.
   --skip-download                Skip download after finding missing assets. Flag for debugging only.
   --skip-download-errors         Continue synchronization process if missing assets download detected
   --skip-upload                  Skip upload after downloading missing assets. Flag for debugging only.
   --path-filter path             Regexp value with path for syncing. (default: ".*")
   --help, -h                     show help
   --version, -V                  print the version

COPYRIGHT:
   (c) 2021 mindhunter86