ffstools

Command-line tools for FFS

See also https://github.com/creachadair/ffs.

• The blobd tool defines an RPC service that implements the FFS blob store interface over various underlying key-value storage implementations.

  # To install:
  go install github.com/creachadair/ffstools/blobd@latest
  

• The ffs tool also communicates with the blobd service and provides commands to manipulate the contents of the store as FFS specific messages.

  # To install:
  go install github.com/creachadair/ffstools/ffs@latest
  

  The ffs blob subcommand replaced the separate blob tool in #30.

• The file2json tool decodes wire-format node messages and translates them to JSON for easier reading by humans.

  # To install:
  go install github.com/creachadair/ffstools/file2json@latest
  

Installation and Usage

Install blobd and ffs as noted above, then:

# Start up a storage server (blobd) using local files as storage.
export FFS_STORE=/tmp/test.db.sock
blobd -store file:test.db -listen "$FFS_STORE" &
while [[ ! -e "$FFS_STORE" ]] ; do sleep 1 ; done

# Create a root pointer to anchor some data.
ffs root create example --desc 'Example root pointer'

# Create some files to put into storage.
mkdir -p files/sub
echo "This is my file." > files/sub/f1.txt
echo "Many others are like it" > files/sub/f2.txt
echo "But this one is mine." > files/f3.txt

# Copy the files directory into the store.
ffs put -into example/test1 files

# List the contents we just wrote...
ffs file list -long example/test1
ffs file list -long example/test1/sub

# Move some files around...
echo "That was your file." > files/sub/f1.txt
mv files/sub/f2.txt files/f4.txt
rm files/f3.txt

# Add another copy of the structure.
ffs put -into example/test2 files

# List the revised contents...
ffs file list -long example/test1
ffs file list -long example/test2
ffs file list -long example/test2/sub

# List the stuff reachable from the root.
ffs file list -long -key example

# GC unreachable data in the store.
ffs gc

# Stop the blobd.
kill %1 && wait