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Elect one fleet torrent seeder per AWS VPC via IMDS cloud_instance_meta.
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Agents read vpc-id from EC2 IMDS on auth; the server scopes subnet_primary_seeder to vpc-id with /24 fallback, exposes VPC seeder badges, and documents cross-VPC gossip via peering/TGW.
This commit is contained in:
AetherForge
2026-06-07 10:06:42 -07:00
parent 0795c511ab
commit 990105f7bf
49 changed files with 570 additions and 879 deletions
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32
server/internal/atlas/fleet_gossip.go
View File

@@ -1,16 +1,17 @@
package atlas
import (
"fmt"
"strings"
)
// Fleet gossip kinds — shard DHT advertisements relayed fleet-wide (not LAN-only).
const (
FleetGossipHaveShard = "have_shard"
FleetGossipHealthy = "healthy"
FleetGossipKnowNode = "know_node"
)
// FleetGossipRecord is one peer advertisement in the fleet torrent DHT.
type FleetGossipRecord struct {
Kind string `json:"kind"`
AgentID string `json:"agent_id,omitempty"`
@@ -18,21 +19,18 @@ type FleetGossipRecord struct {
Token string `json:"token,omitempty"`
ShardIndex int `json:"shard_index,omitempty"`
ShardHash string `json:"shard_hash,omitempty"`
Region string `json:"region,omitempty"`
ShardAdvert string `json:"shard_advert,omitempty"`
TargetAgentID string `json:"target_agent_id,omitempty"`
Healthy bool `json:"healthy,omitempty"`
FetchURL string `json:"fetch_url,omitempty"`
}
// NormalizeFleetGossipRecord validates and trims one fleet gossip record.
func NormalizeFleetGossipRecord(r FleetGossipRecord) (FleetGossipRecord, bool) {
r.Kind = strings.TrimSpace(strings.ToLower(r.Kind))
r.AgentID = strings.TrimSpace(r.AgentID)
r.Subnet = strings.TrimSpace(r.Subnet)
r.Token = strings.TrimSpace(r.Token)
r.ShardHash = strings.TrimSpace(strings.ToLower(r.ShardHash))
r.Region = strings.TrimSpace(r.Region)
r.ShardAdvert = strings.TrimSpace(r.ShardAdvert)
r.TargetAgentID = strings.TrimSpace(r.TargetAgentID)
r.FetchURL = strings.TrimSpace(r.FetchURL)
switch r.Kind {
@@ -40,17 +38,6 @@ func NormalizeFleetGossipRecord(r FleetGossipRecord) (FleetGossipRecord, bool) {
if r.AgentID == "" || r.Token == "" || r.ShardHash == "" {
return FleetGossipRecord{}, false
}
if r.Region == "" && r.ShardAdvert != "" {
if region, idx, ok := parseShardAdvert(r.ShardAdvert); ok {
r.Region = region
if r.ShardIndex == 0 {
r.ShardIndex = idx
}
}
}
if r.ShardAdvert == "" && r.Region != "" {
r.ShardAdvert = fmt.Sprintf("%s:%d", r.Region, r.ShardIndex)
}
case FleetGossipHealthy:
if r.AgentID == "" {
return FleetGossipRecord{}, false
@@ -65,6 +52,7 @@ func NormalizeFleetGossipRecord(r FleetGossipRecord) (FleetGossipRecord, bool) {
return r, true
}
// NormalizeFleetGossipRecords drops invalid records while preserving order.
func NormalizeFleetGossipRecords(in []FleetGossipRecord) []FleetGossipRecord {
if len(in) == 0 {
return nil
@@ -77,15 +65,3 @@ func NormalizeFleetGossipRecords(in []FleetGossipRecord) []FleetGossipRecord {
}
return out
}
func parseShardAdvert(advert string) (region string, index int, ok bool) {
colon := strings.LastIndex(strings.TrimSpace(advert), ":")
if colon <= 0 {
return "", 0, false
}
region = strings.TrimSpace(advert[:colon])
if _, err := fmt.Sscanf(strings.TrimSpace(advert[colon+1:]), "%d", &index); err != nil {
return "", 0, false
}
return region, index, region != ""
}

17
server/internal/atlas/fleet_gossip_test.go
View File

@@ -2,12 +2,15 @@ package atlas
import "testing"
func TestNormalizeFleetGossipShardAdvert(t *testing.T) {
r, ok := NormalizeFleetGossipRecord(FleetGossipRecord{
Kind: FleetGossipHaveShard, AgentID: "a", Token: "t", ShardHash: "h",
Region: "us-west-2", ShardIndex: 4,
})
if !ok || r.ShardAdvert != "us-west-2:4" {
t.Fatalf("advert=%q", r.ShardAdvert)
func TestNormalizeFleetGossipRecords(t *testing.T) {
in := []FleetGossipRecord{
{Kind: FleetGossipHaveShard, AgentID: "a", Token: "tok", ShardHash: "abc"},
{Kind: "bogus"},
{Kind: FleetGossipHealthy, AgentID: "b", Healthy: true},
{Kind: FleetGossipKnowNode, AgentID: "a", TargetAgentID: "c"},
}
out := NormalizeFleetGossipRecords(in)
if len(out) != 3 {
t.Fatalf("got %d records", len(out))
}
}