swarmer

Swarmer

Swarmer treats Swarm similar to a dev dependency. Add a swarmer.yml file to your directory and then simply run swarmer start.

Swarmer automatically spins up the number of Swarm nodes you specify, peers the nodes, and then returns the details of each node in JSON as output to be used by build systems, etc..

Installation

go get github.com/MainframeHQ/swarmer or clone and build manually.

Other means of installation may be provided in the future for those without a Golang environment already setup.

Usage

Swarmer can be invoked either with a Yaml file describing the Swarm nodes, or by using command line flags.

To get started quickly, see the swarmer.yml file in this repo as an example to get started.

For command line usage have a look at the output from swarmer help.

Commands and Flags

COMMANDS

• start, s Start the Swarm cluster
• stop, t Stop the Swarm cluster
• status, a Get a list of running nodes
• help, h Shows a list of commands or help for one command

GLOBAL OPTIONS

• --nodes value, -n value how many swarm nodes to start (default: 1) [$DEVCLUSTER_NODES]
• --config value, -C value load a YAML or TOML config file rather than supplying args and flags [$DEVCLUSTER_CONFIG]
• --repo value, -r value URL to Git repository containing Swarm source to be built [$DEVCLUSTER_REPO]
• --srcdir value, -d value build source from given directory rather than from Git repo [$DEVCLUSTER_SRC]
• --checkout value, -c value branch, tag, or hash to checkout from the Git repo [$DEVCLUSTER_CHECKOUT]
• --ens-api value, -e value this value is passed directly to Swarm ens-api flag [$DEVCLUSTER_ENS]
• --geth, -g run Geth as well as swarm [$DEVCLUSTER_GETH]
• --docker_log value, -b value local logfile for Docker build logs (default: "docker_log") [$DEVCLUSTER_DOCKER_LOG]
• --swarm_log value, -s value local logfile for Swarm logs (default: "swarm_log") [$DEVCLUSTER_SWARM_LOG]
• --add, -a adds the directory from given location to all swarm containers and makes them available at /swarmer [$DEVCLUSTER_ADD]
• --follow, -f remain attached and display Swarm logs [$DEVCLUSTER_FOLLOW]
• --help, -h show help
• --version, -v print the version

Example

swarmer --nodes 3 --repo https://github.com/ethereum/go-ethereum --checkout master --ens-api https://mainnet.infura.io/v3/<YOUR-INFURA-KEY> --geth start

Using swarmer.yml

For convenience, Swarmer automatically looks for a swarmer.yml in the current directory. If your project requires Swarm, you will find it rather convenient to simply include a swarmer.yml file in your source repository. This way when a developer, or a build system checks out your repo to work with it, all that has to be done is to run swarmer.

Swarmer spins up the required number of nodes and peers them together. Additionally it gives you confidence that developers are working with the same version of Swarm, as you can pin Swarm to a specific version in the Yaml file.

Currently, swarmer.yml is flat, and accepts the same arguments as supported by command line flags listed above.