Add Docker files (#73)

Dockerfile

@@ -0,0 +1,27 @@
+FROM golang:1.20-alpine as builder
+
+RUN apk --update --no-cache add make git g++ linux-headers
+# DEBUG
+RUN apk add busybox-extras
+
+# Get and build ipfs-blockchain-watcher
+ADD . /go/src/github.com/cerc-io/ipld-eth-state-snapshot
+#RUN git clone https://github.com/cerc-io/ipld-eth-state-snapshot.git /go/src/github.com/vulcanize/ipld-eth-state-snapshot
+
+WORKDIR /go/src/github.com/cerc-io/ipld-eth-state-snapshot
+RUN GO111MODULE=on GCO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -ldflags '-extldflags "-static"' -o ipld-eth-state-snapshot .
+
+# app container
+FROM alpine
+
+RUN apk --no-cache add su-exec bash
+
+WORKDIR /app
+
+COPY --from=builder /go/src/github.com/cerc-io/ipld-eth-state-snapshot/startup_script.sh .
+COPY --from=builder /go/src/github.com/cerc-io/ipld-eth-state-snapshot/environments environments
+
+# keep binaries immutable
+COPY --from=builder /go/src/github.com/cerc-io/ipld-eth-state-snapshot/ipld-eth-state-snapshot ipld-eth-state-snapshot
+
+ENTRYPOINT ["/app/startup_script.sh"]

pkg/snapshot/config.go

@@ -91,6 +91,7 @@ func NewInPlaceSnapshotConfig() *Config {
 
 // Init Initialises config
 func (c *Config) Init(mode SnapshotMode) error {
+	viper.BindEnv(LOGRUS_FILE_TOML, LOGRUS_FILE)
 	viper.BindEnv(ETH_NODE_ID_TOML, ETH_NODE_ID)
 	viper.BindEnv(ETH_CLIENT_NAME_TOML, ETH_CLIENT_NAME)
 	viper.BindEnv(ETH_GENESIS_BLOCK_TOML, ETH_GENESIS_BLOCK)
@@ -159,6 +160,12 @@ func (c *FileConfig) Init() error {
 }
 
 func (c *ServiceConfig) Init() error {
+	viper.BindEnv(SNAPSHOT_BLOCK_HEIGHT_TOML, SNAPSHOT_BLOCK_HEIGHT)
+	viper.BindEnv(SNAPSHOT_START_HEIGHT_TOML, SNAPSHOT_START_HEIGHT)
+	viper.BindEnv(SNAPSHOT_END_HEIGHT_TOML, SNAPSHOT_END_HEIGHT)
+	viper.BindEnv(SNAPSHOT_MODE_TOML, SNAPSHOT_MODE)
+	viper.BindEnv(SNAPSHOT_WORKERS_TOML, SNAPSHOT_WORKERS)
+
 	viper.BindEnv(SNAPSHOT_ACCOUNTS_TOML, SNAPSHOT_ACCOUNTS)
 	var allowedAccounts []string
 	viper.UnmarshalKey(SNAPSHOT_ACCOUNTS_TOML, &allowedAccounts)

startup_script.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+# Exit if the variable tests fail
+set -e
+set -o pipefail
+ 
+if [[ -n "$CERC_SCRIPT_DEBUG" ]]; then
+    env
+    set -x
+fi
+
+# Check the database variables are set
+test "$VDB_COMMAND"
+
+# docker must be run in privilaged mode for mounts to work
+echo "Setting up /app/geth-rw overlayed /app/geth-ro"
+mkdir -p /tmp/overlay
+mount -t tmpfs tmpfs /tmp/overlay
+mkdir -p /tmp/overlay/upper
+mkdir -p /tmp/overlay/work
+mkdir -p /app/geth-rw
+
+mount -t overlay overlay -o lowerdir=/app/geth-ro,upperdir=/tmp/overlay/upper,workdir=/tmp/overlay/work /app/geth-rw
+
+mkdir /var/run/statediff
+cd /var/run/statediff
+
+SETUID=""
+if [[ -n "$TARGET_UID" ]] && [[ -n "$TARGET_GID" ]]; then
+    SETUID="su-exec $TARGET_UID:$TARGET_GID"
+    chown -R $TARGET_UID:$TARGET_GID /var/run/statediff
+fi
+
+START_TIME=`date -u +"%Y-%m-%dT%H:%M:%SZ"`
+echo "Running the snapshot service" && \
+if [[ ! -z "$LOGRUS_FILE" ]]; then
+  $SETUID /app/ipld-eth-state-snapshot "$VDB_COMMAND" $* |& $SETUID tee ${LOGRUS_FILE}.console
+  rc=$?
+else
+  $SETUID /app/ipld-eth-state-snapshot "$VDB_COMMAND" $*
+  rc=$?
+fi
+STOP_TIME=`date -u +"%Y-%m-%dT%H:%M:%SZ"`
+
+if [ $rc -eq 0 ] && [ "$VDB_COMMAND" == "stateSnapshot" ] && [ -n "$SNAPSHOT_BLOCK_HEIGHT" ]; then
+  cat >metadata.json <<EOF
+{
+  "type": "snapshot",
+  "range": { "start": $SNAPSHOT_BLOCK_HEIGHT, "stop": $SNAPSHOT_BLOCK_HEIGHT },
+  "nodeId": "$ETH_NODE_ID",
+  "genesisBlock": "$ETH_GENESIS_BLOCK",
+  "networkId": "$ETH_NETWORK_ID",
+  "chainId": "$ETH_CHAIN_ID",
+  "time": { "start": "$START_TIME", "stop": "$STOP_TIME" }
+}
+EOF
+  if [[ -n "$TARGET_UID" ]] && [[ -n "$TARGET_GID" ]]; then
+    echo 'metadata.json' | cpio -p --owner $TARGET_UID:$TARGET_GID $FILE_OUTPUT_DIR
+  else
+    cp metadata.json $FILE_OUTPUT_DIR
+  fi
+fi
+
+exit $rc