gas-oracle: ci + docker build/publish

Adds a dockerfile for the `gas-oracle` as well as adding it as
a service in the `docker-compose.yaml`. It is not enabled by
default due to memory issues in CI already happening occasionally
where the integration tests are oom killed.

The `gas-oracle` is configured with a key that owns the
`OVM_GasPriceOracle`.

This PR adds the `gas-oracle` to the Github Actions
workflow that is responsible for publishing the docker images.

.dockerignore

@@ -12,3 +12,4 @@ tests/testdata
 l2geth/signer/fourbyte
 l2geth/cmd/puppeth
 l2geth/cmd/clef
+go/gas-oracle/gas-oracle

.github/workflows/release.yml

@@ -17,6 +17,7 @@ jobs:
       message-relayer: ${{ steps.packages.outputs.message-relayer }}
       data-transport-layer: ${{ steps.packages.outputs.data-transport-layer }}
       contracts: ${{ steps.packages.outputs.contracts }}
+      gas-oracle: ${{ steps.packages.outputs.gas-oracle }}
 
     steps:
       - name: Checkout Repo
@@ -100,6 +101,32 @@ jobs:
           push: true
           tags: ethereumoptimism/rpc-proxy:${{ needs.release.outputs.l2geth }}
 
+  gas-oracle:
+    name: Publish Gas Oracle Version ${{ needs.release.outputs.gas-oracle }}
+    needs: release
+    if: needs.release.outputs.gas-oracle != ''
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_ACCESS_TOKEN_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_ACCESS_TOKEN_SECRET }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Publish Gas Oracle
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./ops/docker/Dockerfile.gas-oracle
+          push: true
+          tags: ethereumoptimism/gas-oracle:${{ needs.release.outputs.gas-oracle }}
+
   # pushes the base builder image to dockerhub
   builder:
     name: Prepare the base builder image for the services

ops/docker-compose.yml

@@ -198,3 +198,14 @@ services:
       ENABLE_GAS_REPORT: 1
       NO_NETWORK: 1
 
+  gas_oracle:
+    image: ethereumoptimism/gas-oracle
+    deploy:
+       replicas: 0
+    build:
+      context: ..
+      dockerfile: ./ops/docker/Dockerfile.gas-oracle
+    entrypoint: ./gas-oracle.sh
+    environment:
+      GAS_PRICE_ORACLE_ETHEREUM_HTTP_URL: http://l2geth:8545
+      GAS_PRICE_ORACLE_PRIVATE_KEY: "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80"

ops/docker/Dockerfile.gas-oracle

+FROM golang:1.15-alpine3.13 as builder
+
+RUN apk add --no-cache make gcc musl-dev linux-headers git jq bash
+
+ADD ./go/gas-oracle /gas-oracle
+RUN cd /gas-oracle && make gas-oracle
+
+FROM alpine:3.13
+
+RUN apk add --no-cache ca-certificates jq curl
+COPY --from=builder /gas-oracle/gas-oracle /usr/local/bin/
+
+COPY ./ops/scripts/gas-oracle.sh .
+ENTRYPOINT ["gas-oracle"]

ops/envs/geth.env

@@ -7,6 +7,7 @@ ROLLUP_CLIENT_HTTP=
 ROLLUP_STATE_DUMP_PATH=
 ROLLUP_POLL_INTERVAL_FLAG=500ms
 ROLLUP_ENABLE_L2_GAS_POLLING=true
+ROLLUP_GAS_PRICE_ORACLE_OWNER_ADDRESS=0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266
 # ROLLUP_ENFORCE_FEES=
 
 ETHERBASE=0x7E5F4552091A69125d5DfCb7b8C2659029395Bdf

ops/scripts/gas-oracle.sh

+#!/bin/sh
+
+RETRIES=${RETRIES:-40}
+
+if [[ -z $GAS_PRICE_ORACLE_ETHEREUM_HTTP_URL ]]; then
+    echo "Must set env GAS_PRICE_ORACLE_ETHEREUM_HTTP_URL"
+    exit 1
+fi
+
+# waits for l2geth to be up
+curl --fail \
+    --show-error \
+    --silent \
+    --retry-connrefused \
+    --retry $RETRIES \
+    --retry-delay 1 \
+    --output /dev/null \
+    $GAS_PRICE_ORACLE_ETHEREUM_HTTP_URL
+
+exec gas-oracle "$@"