WIP: feat: Support proxying light_client routes

.github/workflows/golangci-lint.yaml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v3
         with:
-          go-version: 1.18
+          go-version: 1.22
       - uses: actions/checkout@v3
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3

.github/workflows/goreleaser.yaml

@@ -37,7 +37,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.19'
+          go-version: '1.22'
       -
         name: Set up NodeJS
         uses: actions/setup-node@v3

.github/workflows/test.yaml

@@ -10,7 +10,7 @@ jobs:
   full_ci:
     strategy:
       matrix:
-        go_version: [ 1.18.x ]
+        go_version: [ 1.22.x ]
 
     runs-on: ubuntu-20.04
 

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.20 AS builder
+FROM golang:1.22 AS builder
 WORKDIR /src
 COPY go.sum go.mod ./
 RUN go mod download

README.md

@@ -45,7 +45,7 @@ Checkpointz simplifies the process of running an Ethereum Beacon Chain checkpoin
 - Resource reduction
   - Adds HTTP cache-control headers depending on the content
 - DOS protection
-  - Never routes an incoming request directly to an upstream beacon node
+  - Never routes an incoming request directly to an upstream beacon node unless `light_client.mode` is set to `proxy`
 - Support for multiple upstream beacon nodes
   - Only serves a new finalized epoch once 50%+ of upstream beacon nodes agree
 - Extensive Prometheus metrics
@@ -168,7 +168,14 @@ checkpointz:
     # brand_name: Brandname
     # The public URL of where the frontend will be served from (optional)
     # public_url: https://www.domain.com
-
+  light_client:
+    # Enables light_client routes
+    enabled: false
+    # Proxy mode will proxy requests to the upstream beacon node
+    # WARNING: This will increase the load on the upstream beacon node
+    # AND EXPOSES YOUR BEACON NODE TO UNPREDICTABLE API LOAD.
+    # DO NOT USE THIS ON A VALIDATOR NODE.
+    mode: proxy
 beacon:
   # Upstreams configures the upstream beacon nodes to use.
   upstreams:

example_config.yaml

@@ -19,7 +19,14 @@ checkpointz:
     brand_name: Brandname
     # public url where frontend will be served from (optional)
     public_url: https://www.domain.com
-
+  light_client:
+    # Enables light_client routes
+    enabled: false
+    # Proxy mode will proxy requests to the upstream beacon node
+    # WARNING: This will increase the load on the upstream beacon node
+    # AND EXPOSES YOUR BEACON NODE TO UNPREDICTABLE API LOAD.
+    # DO NOT USE THIS ON A VALIDATOR NODE.
+    mode: proxy
 
 beacon:
   upstreams:

go.mod

@@ -1,12 +1,12 @@
 module github.com/ethpandaops/checkpointz
 
-go 1.17
+go 1.22
 
 require (
-	github.com/attestantio/go-eth2-client v0.19.9
+	github.com/attestantio/go-eth2-client v0.21.9
 	github.com/chuckpreslar/emission v0.0.0-20170206194824-a7ddd980baf9
 	github.com/creasty/defaults v1.6.0
-	github.com/ethpandaops/beacon v0.35.0
+	github.com/ethpandaops/beacon v0.42.1-0.20241024060031-8e0b4cd9bc1f
 	github.com/ethpandaops/ethwallclock v0.2.0
 	github.com/go-co-op/gocron v1.18.0
 	github.com/julienschmidt/httprouter v1.3.0
@@ -15,14 +15,17 @@ require (
 	github.com/prometheus/client_golang v1.16.0
 	github.com/sirupsen/logrus v1.9.1
 	github.com/spf13/cobra v1.6.1
-	github.com/stretchr/testify v1.8.4
+	github.com/stretchr/testify v1.9.0
 	gopkg.in/yaml.v2 v2.4.0
 )
 
 require (
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/btcsuite/btcd/btcec/v2 v2.3.4 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
+	github.com/ethereum/go-ethereum v1.14.10 // indirect
 	github.com/fatih/color v1.16.0 // indirect
 	github.com/ferranbt/fastssz v0.1.3 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
@@ -33,13 +36,14 @@ require (
 	github.com/go-playground/universal-translator v0.18.0 // indirect
 	github.com/go-playground/validator/v10 v10.9.0 // indirect
 	github.com/goccy/go-yaml v1.9.5 // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
-	github.com/holiman/uint256 v1.2.4 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/golang/snappy v0.0.5-0.20220116011046-fa5810519dcb // indirect
+	github.com/holiman/uint256 v1.3.1 // indirect
 	github.com/huandu/go-clone v1.6.0 // indirect
 	github.com/inconshreveable/mousetrap v1.0.1 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/compress v1.13.6 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.6 // indirect
+	github.com/klauspost/compress v1.16.0 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
 	github.com/leodido/go-urn v1.2.1 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
@@ -48,28 +52,32 @@ require (
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pk910/dynamic-ssz v0.0.3 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_model v0.3.0 // indirect
 	github.com/prometheus/common v0.42.0 // indirect
 	github.com/prometheus/procfs v0.10.1 // indirect
-	github.com/prysmaticlabs/go-bitfield v0.0.0-20210809151128-385d8c5e3fb7 // indirect
+	github.com/prysmaticlabs/go-bitfield v0.0.0-20240328144219-a1caa50c3a1e // indirect
 	github.com/r3labs/sse/v2 v2.10.0 // indirect
 	github.com/robfig/cron/v3 v3.0.1 // indirect
-	github.com/rs/zerolog v1.29.1 // indirect
+	github.com/rs/zerolog v1.32.0 // indirect
 	github.com/signalsciences/ac v1.2.0 // indirect
 	github.com/spf13/cast v1.5.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect
 	github.com/ugorji/go/codec v1.2.6 // indirect
 	go.opentelemetry.io/otel v1.16.0 // indirect
 	go.opentelemetry.io/otel/metric v1.16.0 // indirect
 	go.opentelemetry.io/otel/trace v1.16.0 // indirect
-	golang.org/x/crypto v0.18.0 // indirect
-	golang.org/x/net v0.10.0 // indirect
-	golang.org/x/sync v0.2.0 // indirect
-	golang.org/x/sys v0.16.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/crypto v0.23.0 // indirect
+	golang.org/x/exp v0.0.0-20231110203233-9a3e6036ecaa // indirect
+	golang.org/x/net v0.24.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/sys v0.22.0 // indirect
+	golang.org/x/text v0.15.0 // indirect
 	golang.org/x/xerrors v0.0.0-20231012003039-104605ab7028 // indirect
-	google.golang.org/protobuf v1.30.0 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
+	gopkg.in/Knetic/govaluate.v3 v3.0.0 // indirect
 	gopkg.in/cenkalti/backoff.v1 v1.1.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )