Swarm: a basic server

A simple LevelDB-backed WebSocket and TCP-listening Swarm server (peer).

Usage

swarmd [-C|-F|-A|-R] [options] path/database-id

C, F, A, R are run modes (create, fork, access, run). The database directory name consists of the database id and peer id.

 
npm install -g swarm-server
    
# creates an empty "test" database replica (peer id 1) at ./test-1 
swarmd -C --oClock=Logical ./test-1
 
# WebSocket-only Swarm server, runs REPL, which is good for debugging 
swarmd -R ./test-1 --listen ws://localhost:8080

Options

• -C --create create a database (dir name == db name)
  • -n --name database name (default: take from the path)
  • -i --id XY replica id (default: take from the path)
  • --oXxx="Yyy" set a global database option Xxx to "Yyy"
  • --OXxx="Yyy" set a scoped database option
  • --0Xxx="Yyy" set a local database option override
• -F --fork fork a database
  • -t --to /path/dbname-YZ a path for the new replica
  • -i --id YZ as above
• -A --access access a database
  • -s --scan /Type#id!prefix list all records under a prefix
  • -e --erase /Type#id!prefix erase records
  • -p --put file add ops to the database (default: read stdin)
  • -v --vv print the version vector
  • -g --get /Type#id print the object's state
  • --OXxx, --0Xxx edit database options (as above)
• -U --user add/remove/list users/clients
  • -a --add login add a user (take the password from stdin)
  • -r --remove login
  • -l --list
• -R --run run a database (the default)
  • -l --listen scheme:url listen for client conns on URL
    • - stdin (default)
    • ws://hostname:port WebSocket
    • tcp://11.22.33.44:5555 TCP
  • -c --connect scheme:url connect to a peer
  • -e --exec script.js execute a script once connected
  • -r --repl start REPL
  • -d --daemon daemonize
  • -x exit when done
  • -f --filter grep log events (e.g. -f /Swarm.on.off)

Database options

1. Globals (relayed to every replica)
   • DBIdScheme replica id scheme (e.g. --oIdScheme=0280)
   • Clock clock mode (Logical, Hybrid)
   • ClockLen minimum time value length (e.g. 6 for 1GDBdW)
2. Scopeds (relayed to clients, but not peers)
3. Locals (not relayed)
   • Listen listen url (e.g. -0Listen=wss://swarmdb.net:1234)
   • Connect peer's url (e.g. -0Connect=tcp://1.2.3.4:5678)

for a CLI client, see swarm-client.