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Warnet Network Topology

Warnet creates a Bitcoin network using a network topology from a graphml file.

Before any scenarios or RPC commands can be executed, a Warnet network must be started from a graph. See warcli.md for more details on these commands.

To start a network called "warnet" from the default graph file:

warcli network start

To start a network with custom configurations:

warcli network start <path/to/file.graphml> --network="network_name"

Creating graphs automatically

Graphs can be created via the graph menu:

# show graph commands
warcli graph --help

# Create a cycle graph of 12 nodes using default Bitcoin Core version (v26.0)
warcli graph create 12 --outfile=./12_x_v26.0.graphml

# Start network with default name "warnet"
warcli network start ./12_x_v26.0.graphml

Warnet graph nodes and edges

Nodes in a Warnet graph MUST have either a "version" key or an "image" key. These dictate what version of Bitcoin Core to deploy in a fiven tank.

Edges without additional properties are interpreted as Bitcoin p2p connections. If an edge has additional key-value properties, it will be interpreted as a lightning network channel (see lightning.md).

GraphML file specification

GraphML file format and headers

<?xml version="1.0" encoding="UTF-8"?><graphml xmlns="http://graphml.graphdrawing.org/xmlns">
  <key id="services"        attr.name="services"         attr.type="string"   for="graph" />
  <key id="version"         attr.name="version"          attr.type="string"   for="node" />
  <key id="image"           attr.name="image"            attr.type="string"   for="node" />
  <key id="bitcoin_config"  attr.name="bitcoin_config"   attr.type="string"   for="node" />
  <key id="tc_netem"        attr.name="tc_netem"         attr.type="string"   for="node" />
  <key id="exporter"        attr.name="exporter"         attr.type="boolean"  for="node" />
  <key id="collect_logs"    attr.name="collect_logs"     attr.type="boolean"  for="node" />
  <key id="build_args"      attr.name="build_args"       attr.type="string"   for="node" />
  <key id="ln"              attr.name="ln"               attr.type="string"   for="node" />
  <key id="ln_image"        attr.name="ln_image"         attr.type="string"   for="node" />
  <key id="ln_cb_image"     attr.name="ln_cb_image"      attr.type="string"   for="node" />
  <key id="ln_config"       attr.name="ln_config"        attr.type="string"   for="node" />
  <key id="channel_open"    attr.name="channel_open"     attr.type="string"   for="edge" />
  <key id="source_policy"   attr.name="source_policy"    attr.type="string"   for="edge" />
  <key id="target_policy"   attr.name="target_policy"    attr.type="string"   for="edge" />
  <graph edgedefault="directed">
    <!-- <nodes> -->
    <!-- <edges> -->
  </graph>
</graphml>
key for type default explanation
services graph string A space-separated list of extra service containers to deploy in the network. See docs/services.md for complete list of available services
version node string Bitcoin Core version with an available Warnet tank image on Dockerhub. May also be a GitHub repository with format user/repository:branch to build from source code
image node string Bitcoin Core Warnet tank image on Dockerhub with the format repository/image:tag
bitcoin_config node string A string of Bitcoin Core options in command-line format, e.g. '-debug=net -blocksonly'
tc_netem node string A tc-netem command as a string beginning with 'tc qdisc add dev eth0 root netem'
exporter node boolean False Whether to attach a Prometheus data exporter to the tank
collect_logs node boolean False Whether to collect Bitcoin Core debug logs with Promtail
build_args node string A string of configure options used when building Bitcoin Core from source code, e.g. '--without-gui --disable-tests'
ln node string Attach a lightning network node of this implementation (currently only supports 'lnd')
ln_image node string Specify a lightning network node image from Dockerhub with the format repository/image:tag
ln_cb_image node string Specify a lnd Circuit Breaker image from Dockerhub with the format repository/image:tag
ln_config node string A string of arguments for the lightning network node in command-line format, e.g. '--protocol.wumbo-channels --bitcoin.timelockdelta=80'
channel_open edge string Indicate that this edge is a lightning channel with these arguments passed to lnd openchannel
source_policy edge string Update the channel originator policy by passing these arguments passed to lnd updatechanpolicy
target_policy edge string Update the channel partner policy by passing these arguments passed to lnd updatechanpolicy