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feat: M3 load balancing + health check (model/render/admin API status/UI)

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jianf
2026-08-17 17:45:03 +08:00
parent bd3a62a017
commit 467c7124ab
10 changed files with 658 additions and 33 deletions
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98
internal/render/render.go
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@ -39,6 +39,19 @@ type Proxy struct {
HTTPHeaders map[string]string // additional request headers
BasicAuthUser string
BasicAuthPassword string
// M3 Load balancing + health check.
// LBGroup/LBGroupKey put this proxy into a frps load-balancing group;
// all members with the same group are balanced across.
LBGroup string
LBGroupKey string
// HealthCheck* enable frpc's built-in health monitor. Empty type = off.
HealthCheckType string // "" | tcp | http
HealthCheckPath string // http only; path to GET on LocalIP:LocalPort
HealthCheckTimeout int // seconds, default 3
HealthCheckMaxFailed int // default 1
HealthCheckInterval int // seconds, default 10
}
// frpcAuth mirrors frpc's auth section.
@ -96,16 +109,52 @@ type frpcProxy struct {
HostHeaderRewrite string `json:"hostHeaderRewrite,omitempty"`
HTTPHeaders map[string]string `json:"httpHeaders,omitempty"`
HTTPBasicAuth *frpcBasicAuth `json:"basicAuth,omitempty"`
// M3 load balancer group + health check.
LoadBalancer *frpcLoadBalancer `json:"loadBalancer,omitempty"`
HealthCheck *frpcHealthCheck `json:"healthCheck,omitempty"`
}
// frpcWebServer is the frpc admin API (webServer) section. Enabled when
// AdminPort > 0; used by the manager to query true per-proxy status.
type frpcWebServer struct {
Addr string `json:"addr,omitempty"`
Port int `json:"port,omitempty"`
User string `json:"user,omitempty"`
Password string `json:"password,omitempty"`
}
// frpcLoadBalancer mirrors frpc's loadBalancer section (group load balancing).
type frpcLoadBalancer struct {
Group string `json:"group"`
GroupKey string `json:"groupKey,omitempty"`
}
// frpcHealthCheck mirrors frpc's healthCheck section.
type frpcHealthCheck struct {
Type string `json:"type"`
TimeoutSeconds int `json:"timeoutSeconds,omitempty"`
MaxFailed int `json:"maxFailed,omitempty"`
IntervalSeconds int `json:"intervalSeconds"`
Path string `json:"path,omitempty"`
HTTPHeaders []frpcHTTPHeader `json:"httpHeaders,omitempty"`
}
// frpcHTTPHeader is a single extra header for an http health check.
type frpcHTTPHeader struct {
Name string `json:"name"`
Value string `json:"value"`
}
// Config is a complete frpc configuration document.
type Config struct {
ServerAddr string `json:"serverAddr"`
ServerPort int `json:"serverPort"`
Auth frpcAuth `json:"auth"`
Transport frpcTransport `json:"transport,omitempty"`
LoginFailExit bool `json:"loginFailExit"`
Proxies []frpcProxy `json:"proxies"`
ServerAddr string `json:"serverAddr"`
ServerPort int `json:"serverPort"`
Auth frpcAuth `json:"auth"`
Transport frpcTransport `json:"transport,omitempty"`
WebServer *frpcWebServer `json:"webServer,omitempty"`
LoginFailExit bool `json:"loginFailExit"`
Proxies []frpcProxy `json:"proxies"`
}
// Render builds the worker config JSON for a remote server from its setting
@ -118,6 +167,18 @@ func Render(remote store.Remote, proxies []Proxy) ([]byte, error) {
LoginFailExit: false,
Proxies: make([]frpcProxy, 0, len(proxies)),
}
// M3: optional local frpc admin API (webServer) so the manager can query
// true per-proxy status. Only emitted when a port is configured.
if remote.AdminPort > 0 {
addr := remote.AdminAddr
if addr == "" {
addr = "127.0.0.1"
}
cfg.WebServer = &frpcWebServer{
Addr: addr, Port: remote.AdminPort,
User: remote.AdminUser, Password: remote.AdminPassword,
}
}
if remote.TransportProtocol != "" || remote.TransportTLS || remote.TransportPool > 0 || remote.TransportTLSServerName != "" {
cfg.Transport = frpcTransport{
Protocol: remote.TransportProtocol,
@ -154,6 +215,31 @@ func Render(remote store.Remote, proxies []Proxy) ([]byte, error) {
if p.BasicAuthUser != "" || p.BasicAuthPassword != "" {
frpcP.HTTPBasicAuth = &frpcBasicAuth{User: p.BasicAuthUser, Password: p.BasicAuthPassword}
}
// M3: load balancing group.
if p.LBGroup != "" {
frpcP.LoadBalancer = &frpcLoadBalancer{Group: p.LBGroup, GroupKey: p.LBGroupKey}
}
// M3: health check. Type "" means off; frpc defaults apply when a
// specific knob is left zero.
if p.HealthCheckType != "" {
hc := &frpcHealthCheck{
Type: p.HealthCheckType,
TimeoutSeconds: p.HealthCheckTimeout,
MaxFailed: p.HealthCheckMaxFailed,
IntervalSeconds: p.HealthCheckInterval,
Path: p.HealthCheckPath,
}
// The HTTP health probe needs its own headers (distinct from the
// proxy's request headers): map the proxy's HTTPHeaders through.
if len(p.HTTPHeaders) > 0 {
hh := make([]frpcHTTPHeader, 0, len(p.HTTPHeaders))
for name, val := range p.HTTPHeaders {
hh = append(hh, frpcHTTPHeader{Name: name, Value: val})
}
hc.HTTPHeaders = hh
}
frpcP.HealthCheck = hc
}
// http/https proxies use customDomains instead of remotePort. The
// default domain is <name>.local; frps matches it by Host header.
if p.Type == "http" || p.Type == "https" {