Add Snap fullnode daemon

README.md

@@ -152,6 +152,62 @@ $ snap info solana
 $ sudo snap refresh solana --devmode
 ```
 
+### Daemon support
+The snap supports running a leader or validator node as a system daemon.
+
+Run `sudo snap get solana` to view the current daemon configuration, and
+`sudo snap logs -f solana` to view the daemon logs.
+
+Disable the daemon at any time by running:
+```bash
+$ sudo snap set solana daemon=
+```
+
+Runtime configuration files for the daemon can be found in
+`/var/snap/solana/current`.
+
+#### Leader daemon
+```bash
+$ sudo snap set solana daemon=leader
+```
+
+If CUDA is available:
+```bash
+$ sudo snap set solana daemon=leader-cuda
+```
+
+`rsync` must be configured and running on the leader.
+
+1. Ensure rsync is installed with `sudo apt-get -y install rsync`
+2. Edit `/etc/rsyncd.conf` to include the following
+```
+[solana]
+path = /var/snap/solana/current
+hosts allow = *
+read only = true
+```
+3. Run `sudo systemctl start rsync`
+4. Test by running `rsync -ravv rsync://<address-of-leader>/solana
+solana-config` from another machine.  If the leader is running on a cloud
+provider it may be necessary to configure the Firewall rules to permit ingress
+to port tcp:873
+
+
+#### Validator daemon
+```bash
+$ sudo snap set solana daemon=validator
+```
+If CUDA is available:
+```bash
+$ sudo snap set solana daemon=validator-cuda
+```
+
+By default the validator will connect to **testnet.solana.com**, override
+the leader address by running:
+```bash
+$ sudo snap set solana daemon=validator leader-address=127.0.0.1 #<-- change IP address
+```
+
 Developing
 ===
 

multinode-demo/fullnode.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+#
+# Simplified interface to starting a full node
+#
+
+usage() {
+  cat <<EOF
+Usage: $0 [mode] [leader_address]"
+
+mode              Select operation mode:
+                    leader          - Run a leader
+                    leader-cuda     - Run a leader with CUDA
+                    validator       - Run a validator
+                    validator-cuda  - Run a validator with CUDA
+
+leader_address    Address of the leader node to connect with.
+                  Only required when mode=validator or mode=validator-cuda
+
+EOF
+  exit 1
+}
+
+here="$(dirname "$0")"
+
+
+MODE=
+if [[ -n "$1" ]]; then
+  MODE="$1"
+elif [[ -d $SNAP ]]; then # Running as a Linux Snap?
+  MODE="$(snapctl get daemon)"
+fi
+[[ -n "$MODE" ]] || usage
+
+case $MODE in
+leader-cuda|leader)
+  echo "Starting $MODE"
+  # TODO: Run setup.sh here if necessary
+  # TODO: Consider CUDA
+  exec "$here"/leader.sh
+  ;;
+
+validator-cuda|validator)
+  LEADER_ADDRESS=testnet.solana.com
+  if [[ -n "$2" ]]; then
+    LEADER_ADDRESS="$2"
+  elif [[ -d $SNAP ]]; then # Running as a Linux Snap?
+    LEADER_ADDRESS="$(snapctl get leader-address)"
+  fi
+  [[ -n "$LEADER_ADDRESS" ]] || usage
+
+  # TODO: Run setup.sh here if necessary
+  # TODO: Consider CUDA
+  echo "Starting $MODE with leader address: $LEADER_ADDRESS"
+  exec "$here"/validator.sh "$LEADER_ADDRESS"
+  ;;
+
+*)
+  echo "Error: Unknown mode: $MODE"
+  exit 1
+  ;;
+esac
+
+exit 1

multinode-demo/setup.sh

@@ -8,6 +8,10 @@ myip=$(myip) || exit $?
 
 num_tokens=${1:-1000000000}
 
+#
+# TODO: Merge this file with ../snap/hooks/configure
+#
+
 cargo run --release --bin solana-mint-demo <<<"${num_tokens}" > mint-demo.json
 cargo run --release --bin solana-genesis-demo < mint-demo.json > genesis.log
 

snap/hooks/configure

@@ -0,0 +1,40 @@
+#!/bin/bash -e
+
+MODE="$(snapctl get daemon)"
+
+# Setup aliases to the normal solana command to make the reset of configure more
+# readable.
+shopt -s expand_aliases
+export SNAP SNAP_LIBRARY_PATH
+alias solana-mint-demo=$SNAP/command-mint-demo.wrapper
+alias solana-genesis-demo=$SNAP/command-genesis-demo.wrapper
+alias solana-fullnode-config=$SNAP/command-fullnode-config.wrapper
+
+echo Stopping daemon
+snapctl stop --disable solana.daemon
+if [[ -n "$MODE" ]]; then
+
+  #
+  # TODO: Merge this file with ../../../multinode-demo/setup.sh
+  #
+
+  NUM_TOKENS=1000000000
+
+  echo Cleaning $SNAP_DATA
+  rm -rvf $SNAP_DATA/*
+
+  echo Creating $SNAP_DATA/mint-demo.json
+  solana-mint-demo <<<"$NUM_TOKENS" > $SNAP_DATA/mint-demo.json
+
+  echo Creating $SNAP_DATA/genesis.log
+  solana-genesis-demo < $SNAP_DATA/mint-demo.json > $SNAP_DATA/genesis.log
+
+  echo Creating $SNAP_DATA/leader.json
+  solana-fullnode-config -d > $SNAP_DATA/leader.json
+
+  echo Creating $SNAP_DATA/validator.json
+  solana-fullnode-config -d -b 9000 > $SNAP_DATA/validator.json
+
+  echo Starting daemon as $MODE
+  snapctl start --enable solana.daemon
+fi

snap/snapcraft.yaml

@@ -10,6 +10,10 @@ grade: devel
 # CUDA dependency, so use 'devmode' confinement for now
 confinement: devmode
 
+hooks:
+  configure:
+    plugs: []
+
 apps:
   drone:
     command: solana-drone
@@ -44,7 +48,18 @@ apps:
   client-demo:
     command: solana-client-demo
 
+  daemon:
+    daemon: simple
+    command: fullnode.sh
+
 parts:
+  solana-scripts:
+    plugin: nil
+    override-build: |
+      set -x
+      mkdir -p $SNAPCRAFT_PART_INSTALL/bin
+      cp -av multinode-demo/* $SNAPCRAFT_PART_INSTALL/bin/
+
   solana-cuda:
     plugin: rust
     rust-channel: stable