[GitHub] sijie opened a new pull request #1478: Update the new bookkeeper tools to use the new framework

[GitBox <gi...@apache.org>]

sijie opened a new pull request #1478: Update the new bookkeeper tools to use the new framework
URL: https://github.com/apache/bookkeeper/pull/1478
 
 
   Descriptions of the changes in this PR:
   
   *Motivation*
   
   #1471  introduces a new tools framework based on jcommander. This PR is changing the new bookkeeper-tools to leverage that framework.
   
   *Solution*
   
   - Changed the related classes to use the new framework.
   - Rename `BookKeeperCLI` to `BKCtl` and `bookkeeper-cli` to `bkctl`
   - Use service loader to load command groups to allow better extensibility
   - Rename command group `cluster` to `bookies`
   
   *Results*
   
   Example output of this change:
   
   ```
   $ bin/bkctl
   bkctl interacts and operates Apache BookKeeper clusters
   
   Usage:  bkctl [flags] [command group] [commands]
   
   Commands:
   
       bookie      Commands on operating a single bookie
       bookies     Commands on operating a cluster of bookies
       ledger      Commands on interacting with ledgers
   
       help        Display help information about it
   
   Flags:
   
       -c, --conf
           Configuration file
   
       -u, --service-uri
           Service Uri
   
   
       -h, --help
           Display help information
   
   Use "bkctl [command] --help" or "bkctl help [command]" for more information
   about a command
   ```
   
   *sub command*
   ```
   $ bin/bkctl help bookie
   Commands on operating a single bookie
   
   Usage:  bkctl bookie [command] [command options]
   
   Commands:
   
       lastmark        Print last log marker
   
       help            Display help information about it
   
   Use "bkctl bookie [command] --help" or "bkctl bookie help [command]" for more
   information about a command
   ```
   
   *sub-sub command*
   
   ```
   $ bin/bkctl bookie help lastmark
   Print last log marker
   
   Usage:  bkctl bookie lastmark [flags]
   
   Flags:
   
   
       -h, --help
           Display help information
   ```
   
   

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