Add start script from SPC

start.sh

@@ -0,0 +1,120 @@
+#!/bin/bash
+set -u
+
+# Expand globs to nothing
+shopt -s nullglob
+
+# Validate dependencies are installed
+command -v jq &> /dev/null || fail "jq not installed"
+command -v curl &> /dev/null || fail "curl not installed"
+
+function log() {
+  local msg=$1
+
+  echo "$(date) $msg" >&2
+}
+function fail() {
+  if [ $# -gt 0 ]; then
+    local msg=$1
+    log "$msg"
+  fi
+
+  exit 1
+}
+
+function check_env_vars() {
+  for name in "$@"; do
+    local value="${!name:-}"
+    if [ -z "$value" ]; then
+      echo "Variable $name is empty"
+      return 1
+    fi
+  done
+}
+
+# Print all env variables for debugging
+env | sed -e 's/^.*MNEMONIC.*$/<removed>/' -e 's/^.*KEY.*$/<removed>/'
+
+# Optional env vars
+LOGLEVEL=${LOGLEVEL:-"info"}
+OPTS=${OPTS:-""}
+EXTERNAL_ADDRESS=${EXTERNAL_ADDRESS:-""}
+PEERS=${PEERS:-""}
+VALIDATOR_KEY=${VALIDATOR_KEY:-""}
+NODE_KEY=${NODE_KEY:-""}
+MNEMONIC=${MNEMONIC:-""}
+
+# Check that mandatory env variables are not empty
+check_env_vars CHAIN_ID MONIKER DENOM GENESIS || fail
+
+# Constant vars
+CONFIG_DIR="$HOME/.ssc/config"
+
+# Note that we are always recreating the config directory in order to avoid handling migrations
+log "initializing config directory"
+#TODO Remove the entire directory when launched from the controller.
+#     It is not used now only because without the controller we cannot
+#     recover the node key.
+#rm -rf "$CONFIG_DIR"
+rm -rf "$CONFIG_DIR/*toml"
+#TODO Remove --recover variant with the controller being used.
+if [ -n "$MNEMONIC" ]; then
+  echo "$MNEMONIC" | sscd init "$MONIKER" --chain-id "$CHAIN_ID" --default-denom "$DENOM" --recover --overwrite || fail "failed to init configuration"
+else
+  sscd init "$MONIKER" --chain-id "$CHAIN_ID" --default-denom "$DENOM" --overwrite || fail "failed to init configuration"
+fi
+
+# Overwrite the randomly generated validator private key
+if [ -n "$VALIDATOR_KEY" ]; then
+  val_key_json=$(echo "$VALIDATOR_KEY" | base64 -d) || fail "failed to decode validator key"
+  echo "$val_key_json" > $CONFIG_DIR/priv_validator_key.json || fail
+fi
+# Overwrite the randomly generated node private key
+if [ -n "$NODE_KEY" ]; then
+  node_key_json=$(echo "$NODE_KEY" | base64 -d) || fail "failed to decode node key"
+  echo "$node_key_json" > $CONFIG_DIR/node_key.json || fail
+fi
+
+# Overwrite the blank genesis file created by the init command
+if [[ ! $GENESIS =~ ^http ]]; then
+  genesis_json=$(echo "$GENESIS" | base64 -d) || fail
+  echo "$genesis_json" > $CONFIG_DIR/genesis.json || fail
+else
+  curl "$GENESIS" --output $CONFIG_DIR/genesis.json -f || fail
+fi
+sscd genesis validate || fail
+
+peers=$PEERS
+if [ -z "$peers" ]; then
+  peers=$(jq -r '.app_state.genutil.gen_txs[].body.memo' $CONFIG_DIR/genesis.json | grep -v "$EXTERNAL_ADDRESS" | paste -sd, -)
+  log "extracted peers from the genesis file: $peers"
+fi
+
+# Node-specific configuration
+# XXX: Do not add things here that are not related to the functionality of this script
+# or are a requirement to start nodes. Those should be passed as a simple command line
+# argument in the $OPTS env variable.
+log "configuring node"
+sed -i "s/^minimum-gas-prices =/ s/= .*/= \"0.01$DENOM,0.01stake\"/g" $CONFIG_DIR/app.toml
+sed -i "s/^log_level =.*/log_level = \"$LOGLEVEL\"/g" $CONFIG_DIR/config.toml
+sed -i 's/^create_empty_blocks = true/create_empty_blocks = false/g' $CONFIG_DIR/config.toml
+sed -i "s/^external_address =.*/external_address = \"$EXTERNAL_ADDRESS\"/g" $CONFIG_DIR/config.toml
+sed -i "s/^persistent_peers =.*/persistent_peers = \"$peers\"/g" $CONFIG_DIR/config.toml
+
+#TODO replace constant changes here with default values in the Go code
+sed -i 's/^address = .*:9090"/address = "0.0.0.0:9090"/g' $CONFIG_DIR/app.toml #grpc.address
+sed -i 's/^laddr = "tcp:\/\/127.0.0.1:26657"/laddr = "tcp:\/\/0.0.0.0:26657"/g' $CONFIG_DIR/config.toml
+sed -i 's/^allow_duplicate_ip = false/allow_duplicate_ip = true/g' $CONFIG_DIR/config.toml
+sed -i 's/^send_rate = 5120000/send_rate = 20000000/g' $CONFIG_DIR/config.toml
+sed -i 's/^recv_rate = 5120000/recv_rate = 20000000/g' $CONFIG_DIR/config.toml
+sed -i 's/^max_packet_msg_payload_size =.*/max_packet_msg_payload_size = 10240/g' $CONFIG_DIR/config.toml
+sed -i 's/^flush_throttle_timeout = \"100ms\"/flush_throttle_timeout = \"10ms\"/g' $CONFIG_DIR/config.toml
+sed -i 's/^iavl-cache-size = .*/iavl-cache-size = 100000/g' $CONFIG_DIR/app.toml
+sed -i 's/^cors_allowed_origins = .*/cors_allowed_origins = ["*"]/g' $CONFIG_DIR/config.toml
+sed -i 's/^enabled-unsafe-cors =.*/enabled-unsafe-cors = true/g' $CONFIG_DIR/app.toml
+sed -i 's/^enable-unsafe-cors =.*/enable-unsafe-cors = true/g' $CONFIG_DIR/app.toml
+sed -i 's/^addr_book_strict = true/addr_book_strict = false/g' $CONFIG_DIR/config.toml
+sed -i 's/prometheus = false/prometheus = true/g' $CONFIG_DIR/config.toml
+echo 'json-log-file = "/var/log/saga/ssc.log"' >> $CONFIG_DIR/config.toml
+
+exec sscd start $OPTS