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Merged
canercidam merged 10 commits into from
Feb 16, 2026
Merged

Add bootnode component #327

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b1a092f
Add bootnode?
ferranbt Jan 11, 2026
416f55b
Merge main
ferranbt Jan 21, 2026
8d94922
Add bootnode
ferranbt Jan 23, 2026
3390c6e
Remove test for now
ferranbt Jan 23, 2026
a384c76
Fix
ferranbt Jan 26, 2026
66c87a3
Update docs
ferranbt Jan 26, 2026
95d6cae
Move
ferranbt Jan 26, 2026
c0d5908
Update docs
ferranbt Jan 26, 2026
ede65ae
Merge branch 'main' into ferranbt-bootnode
canercidam Feb 16, 2026
ab2822f
simplify component creation
canercidam Feb 16, 2026
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2 changes: 2 additions & 0 deletions docs/recipes/opstack.md
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@ graph LR
beacon["beacon<br/>p2p:9000<br/>p2p:9000<br/>quic-p2p:9100<br/>http:3500"]
beacon_healthmon["beacon_healthmon"]
validator["validator"]
bootnode["bootnode<br/>rpc:30303"]
op_geth["op-geth<br/>http:8545<br/>ws:8546<br/>authrpc:8551<br/>rpc:30303<br/>metrics:6061"]
op_geth_healthmon["op-geth_healthmon"]
op_node["op-node<br/>metrics:7300<br/>http:8549<br/>p2p:9003<br/>p2p:9003"]
Expand All @@ -32,6 +33,7 @@ graph LR
beacon -->|authrpc| el
beacon_healthmon -->|http| beacon
validator -->|http| beacon
op_geth -->|rpc| bootnode
op_geth_healthmon -->|http| op_geth
op_node -->|http| el
op_node -->|http| beacon
Expand Down
1 change: 1 addition & 0 deletions playground/catalog.go
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Original file line number Diff line number Diff line change
Expand Up @@ -26,4 +26,5 @@ func init() {
register(&WebsocketProxy{})
register(&BuilderHub{})
register(&ChainMonitor{})
register(&Bootnode{})
}
43 changes: 41 additions & 2 deletions playground/components.go
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Original file line number Diff line number Diff line change
Expand Up @@ -96,7 +96,7 @@ func (o *OpRbuilder) Apply(ctx *ExContext) *Component {
})

if ctx.Bootnode != nil {
service.WithArgs("--trusted-peers", ctx.Bootnode.Connect())
service.WithArgs("--bootnodes", ctx.Bootnode.Connect())
}

if o.Flashblocks {
Expand Down Expand Up @@ -166,7 +166,7 @@ func (f *FlashblocksRPC) Apply(ctx *ExContext) *Component {

if ctx.Bootnode != nil {
service.WithArgs(
"--trusted-peers", ctx.Bootnode.Connect(),
"--bootnodes", ctx.Bootnode.Connect(),
)
}

Expand Down Expand Up @@ -505,6 +505,10 @@ func (r *RethEL) Apply(ctx *ExContext) *Component {
WithArtifact("/data/jwtsecret", "jwtsecret").
WithVolume("data", "/data_reth")

if ctx.Bootnode != nil {
svc.WithArgs("--bootnodes", ctx.Bootnode.Connect())
}

UseHealthmon(component, svc, healthmonExecution)

if r.UseNativeReth {
Expand Down Expand Up @@ -1003,6 +1007,41 @@ func registerBuilderHook(ctx *ExContext, s *Service, b *BuilderHub) error {
return nil
}

type BootnodeProtocol string

const (
BootnodeProtocolV5 BootnodeProtocol = "v5"
)

type Bootnode struct {
Protocol BootnodeProtocol
Enode *EnodeAddr
}

func (b *Bootnode) Apply(ctx *ExContext) *Component {
component := NewComponent("bootnode")

b.Enode = ctx.Output.GetEnodeAddr()
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@claude claude bot Jan 23, 2026

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Note: This initialization needs to be conditional to support the UseBootnode() helper method. When UseBootnode() is used, the Enode is pre-initialized to establish the BootnodeRef before Apply() runs.

Suggested change
b.Enode = ctx.Output.GetEnodeAddr()
if b.Enode == nil {
b.Enode = ctx.Output.GetEnodeAddr()
}

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Bug: This unconditionally calls GetEnodeAddr(), which generates a new key each time (incrementing a sequence counter). However, UseBootnode() already calls GetEnodeAddr() to create the Enode and store the NodeID in ctx.Bootnode.

This means:

  1. UseBootnode() generates key readme bullets formatting #1, stores its NodeID in ctx.Bootnode.ID
  2. Bootnode.Apply() generates key CLI could print services and their ports for clarity #2 (different!), uses enode-key-2.txt

Clients will connect to the NodeID from key #1, but the bootnode will be running with key #2.

Fix: Only generate if Enode is nil:

Suggested change
b.Enode = ctx.Output.GetEnodeAddr()
if b.Enode == nil {
b.Enode = ctx.Output.GetEnodeAddr()
}

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Bug: This unconditionally overwrites b.Enode, but UseBootnode() already initialized it at manifest.go:182 and stored the NodeID in ctx.Bootnode.ID.

Since GetEnodeAddr() increments a sequence counter, this generates a different key. Clients will connect using the NodeID from the first key, but the bootnode runs with the second key.

Suggested change
b.Enode = ctx.Output.GetEnodeAddr()
if b.Enode == nil {
b.Enode = ctx.Output.GetEnodeAddr()
}

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Bug: Enode key mismatch

This unconditionally overwrites b.Enode, but UseBootnode() already initialized it at manifest.go:182 and stored its NodeID in ctx.Bootnode.ID.

Since GetEnodeAddr() increments a sequence counter (see artifacts.go:703), this generates a different key:

  1. UseBootnode() → key readme bullets formatting #1 (sequence=1), stores NodeID in ctx.Bootnode.ID
  2. Bootnode.Apply() → key CLI could print services and their ports for clarity #2 (sequence=2), overwrites b.Enode

Impact: Clients (like RethEL) will try to connect using the NodeID from key #1, but the bootnode service runs with key #2.

Suggested change
b.Enode = ctx.Output.GetEnodeAddr()
if b.Enode == nil {
b.Enode = ctx.Output.GetEnodeAddr()
}

svc := component.NewService("bootnode").
WithImage("ghcr.io/paradigmxyz/reth").
WithTag("v1.9.3").
WithEntrypoint("/usr/local/bin/reth").
WithArgs(
"p2p", "bootnode",
"--addr", `0.0.0.0:{{Port "rpc" 30303}}`,
"--p2p-secret-key", "/data/p2p_key.txt",
"-vvvv",
"--color", "never",
).
WithArtifact("/data/p2p_key.txt", b.Enode.Artifact)

if b.Protocol == BootnodeProtocolV5 {
svc.WithArgs("--v5")
}

return component
}

const (
healthmonBeacon = "beacon"
healthmonExecution = "execution"
Expand Down
2 changes: 1 addition & 1 deletion playground/components_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -207,7 +207,7 @@ func (tt *testFramework) test(component ComponentGen, args []string) *Manifest {

exCtx := &ExContext{
Output: o,
LogLevel: LevelDebug,
LogLevel: LevelTrace,
Contender: &ContenderContext{
Enabled: false,
},
Expand Down
18 changes: 15 additions & 3 deletions playground/manifest.go
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Expand Up @@ -66,8 +66,8 @@ func (p *Component) AddComponent(ctx *ExContext, gen ComponentGen) {
p.Inner = append(p.Inner, gen.Apply(ctx))
}

func (p *Component) AddService(srv ComponentGen) {
p.Inner = append(p.Inner, srv.Apply(nil))
func (p *Component) AddService(ctx *ExContext, srv ComponentGen) {
p.Inner = append(p.Inner, srv.Apply(ctx))
}

func componentToManifest(p *Component) []*Service {
Expand Down Expand Up @@ -177,6 +177,18 @@ type ExContext struct {
Contender *ContenderContext
}

func (e *ExContext) UseBootnode() ComponentGen {
bootnode := &Bootnode{}
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Missing initialization: Before calling bootnode.Enode.NodeID() on line 185, you need to initialize the Enode field:

Suggested change
bootnode := &Bootnode{}
bootnode := &Bootnode{}
bootnode.Enode = e.Output.GetEnodeAddr()

bootnode.Enode = e.Output.GetEnodeAddr()

e.Bootnode = &BootnodeRef{
Service: "bootnode",
ID: bootnode.Enode.NodeID(),
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🔴 Critical Bug: Nil pointer dereference

This line calls bootnode.Enode.NodeID(), but at this point bootnode.Enode is nil. The Enode field is only initialized inside the Apply() method (in components.go:1024), which hasn't been called yet.

This will cause a panic at runtime when UseBootnode() is invoked.

Suggested fix: The UseBootnode() method needs to eagerly initialize the EnodeAddr, similar to how the old code in recipe_opstack.go worked. Consider something like:

func (e *ExContext) UseBootnode() ComponentGen {
	bootnode := &Bootnode{}
	bootnode.Enode = e.Output.GetEnodeAddr()  // Initialize eagerly

	e.Bootnode = &BootnodeRef{
		Service: "bootnode",
		ID:      bootnode.Enode.NodeID(),
	}

	return bootnode
}

Then update Bootnode.Apply() to check if Enode is already set before calling ctx.Output.GetEnodeAddr():

func (b *Bootnode) Apply(ctx *ExContext) *Component {
	component := NewComponent("bootnode")

	if b.Enode == nil {
		b.Enode = ctx.Output.GetEnodeAddr()
	}
	// ... rest of the method
}

}

return bootnode
}

type BootnodeRef struct {
Service string
ID string
Expand Down Expand Up @@ -751,6 +763,6 @@ func ReadManifest(outputFolder string) (*Manifest, error) {

func (component *Component) RunContenderIfEnabled(ctx *ExContext) {
if ctx.Contender.Enabled {
component.AddService(ctx.Contender.Contender())
component.AddService(ctx, ctx.Contender.Contender())
}
}
10 changes: 2 additions & 8 deletions playground/recipe_opstack.go
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Expand Up @@ -75,6 +75,7 @@ func (o *OpRecipe) Artifacts() *ArtifactsBuilder {

func (o *OpRecipe) Apply(ctx *ExContext) *Component {
component := NewComponent("op-recipe")
component.AddService(ctx, ctx.UseBootnode())

component.AddComponent(ctx, &RethEL{})
component.AddComponent(ctx, &LighthouseBeaconNode{
Expand All @@ -88,14 +89,6 @@ func (o *OpRecipe) Apply(ctx *ExContext) *Component {
externalBuilderRef := o.externalBuilder
peers := []string{}

opGeth := &OpGeth{}
component.AddComponent(ctx, opGeth)

ctx.Bootnode = &BootnodeRef{
Service: "op-geth",
ID: opGeth.Enode.NodeID(),
}

if o.externalBuilder == "op-reth" {
// Add a new op-reth service and connect it to Rollup-boost
component.AddComponent(ctx, &OpReth{})
Expand Down Expand Up @@ -170,6 +163,7 @@ func (o *OpRecipe) Apply(ctx *ExContext) *Component {
})
}

component.AddService(ctx, &OpGeth{})
component.AddComponent(ctx, &OpNode{
L1Node: "el",
L1Beacon: "beacon",
Expand Down
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