github-mirror/caddy
2
0
Fork 0
mirror of https://github.com/caddyserver/caddy.git synced 2024-11-22 10:50:18 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Architectural shift to using context for config and module state

Browse Source
This commit is contained in:
Matthew Holt 2019-05-16 16:05:38 -06:00
parent ff5b4639d5
commit 1f0c061ce3
11 changed files with 313 additions and 359 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

275
caddy.go
View File

@ -1,127 +1,118 @@
package caddy2
import (
"context"
"encoding/json"
"fmt"
"log"
"strings"
"sync"
"sync/atomic"
"time"
"github.com/mholt/certmagic"
)
// Run runs Caddy with the given config.
func Run(cfg *Config) error {
// allow only one call to Start at a time,
// since various calls to LoadModule()
// access shared map moduleInstances
startMu.Lock()
defer startMu.Unlock()
// because we will need to roll back any state
// modifications if this function errors, we
// keep a single error value and scope all
// sub-operations to their own functions to
// ensure this error value does not get
// overridden or missed when it should have
// been set by a short assignment
var err error
// prepare the new config for use
cfg.apps = make(map[string]App)
cfg.moduleStates = make(map[string]interface{})
// reset the shared moduleInstances map; but
// keep a temporary reference to the current
// one so we can transfer over any necessary
// state to the new modules or to roll back
// if necessary
oldModuleInstances := moduleInstances
defer func() {
if err != nil {
moduleInstances = oldModuleInstances
}
}()
moduleInstances = make(map[string][]interface{})
// set up storage and make it CertMagic's default storage, too
err = func() error {
if cfg.StorageRaw != nil {
val, err := LoadModuleInline("system", "caddy.storage", cfg.StorageRaw)
if err != nil {
return fmt.Errorf("loading storage module: %v", err)
}
stor, err := val.(StorageConverter).CertMagicStorage()
if err != nil {
return fmt.Errorf("creating storage value: %v", err)
}
cfg.storage = stor
cfg.StorageRaw = nil // allow GC to deallocate - TODO: Does this help?
}
if cfg.storage == nil {
cfg.storage = &certmagic.FileStorage{Path: dataDir()}
}
certmagic.Default.Storage = cfg.storage
return nil
}()
if err != nil {
return err
}
// Load, Provision, Validate
err = func() error {
for modName, rawMsg := range cfg.AppsRaw {
val, err := LoadModule(modName, rawMsg)
if err != nil {
return fmt.Errorf("loading app module '%s': %v", modName, err)
}
cfg.apps[modName] = val.(App)
}
return nil
}()
if err != nil {
return err
}
// swap old config with the new one, and
// roll back this change if anything fails
func Run(newCfg *Config) error {
currentCfgMu.Lock()
oldCfg := currentCfg
currentCfg = cfg
currentCfgMu.Unlock()
defer func() {
if err != nil {
currentCfgMu.Lock()
currentCfg = oldCfg
currentCfgMu.Unlock()
}
}()
defer currentCfgMu.Unlock()
// Start
err = func() error {
h := Handle{cfg}
for name, a := range cfg.apps {
err := a.Start(h)
if newCfg != nil {
// because we will need to roll back any state
// modifications if this function errors, we
// keep a single error value and scope all
// sub-operations to their own functions to
// ensure this error value does not get
// overridden or missed when it should have
// been set by a short assignment
var err error
// prepare the new config for use
newCfg.apps = make(map[string]App)
// create a context within which to load
// modules - essentially our new config's
// execution environment; be sure that
// cleanup occurs when we return if there
// was an error; otherwise, it will get
// cleaned up on next config cycle
ctx, cancel := NewContext(Context{Context: context.Background(), cfg: newCfg})
defer func() {
if err != nil {
for otherAppName, otherApp := range cfg.apps {
err := otherApp.Stop()
if err != nil {
log.Printf("aborting app %s: %v", otherAppName, err)
}
}
return fmt.Errorf("%s app module: start: %v", name, err)
cancel() // clean up now
}
}()
newCfg.cancelFunc = cancel // clean up later
// set up storage and make it CertMagic's default storage, too
err = func() error {
if newCfg.StorageRaw != nil {
val, err := ctx.LoadModuleInline("system", "caddy.storage", newCfg.StorageRaw)
if err != nil {
return fmt.Errorf("loading storage module: %v", err)
}
stor, err := val.(StorageConverter).CertMagicStorage()
if err != nil {
return fmt.Errorf("creating storage value: %v", err)
}
newCfg.storage = stor
newCfg.StorageRaw = nil // allow GC to deallocate - TODO: Does this help?
}
if newCfg.storage == nil {
newCfg.storage = &certmagic.FileStorage{Path: dataDir()}
}
certmagic.Default.Storage = newCfg.storage
return nil
}()
if err != nil {
return err
}
// Load, Provision, Validate
err = func() error {
for modName, rawMsg := range newCfg.AppsRaw {
val, err := ctx.LoadModule(modName, rawMsg)
if err != nil {
return fmt.Errorf("loading app module '%s': %v", modName, err)
}
newCfg.apps[modName] = val.(App)
}
return nil
}()
if err != nil {
return err
}
// Start
err = func() error {
var started []string
for name, a := range newCfg.apps {
err := a.Start()
if err != nil {
for _, otherAppName := range started {
err2 := newCfg.apps[otherAppName].Stop()
if err2 != nil {
err = fmt.Errorf("%v; additionally, aborting app %s: %v",
err, otherAppName, err2)
}
}
return fmt.Errorf("%s app module: start: %v", name, err)
}
started = append(started, name)
}
return nil
}()
if err != nil {
return err
}
return nil
}()
if err != nil {
return err
}
// Stop
// swap old config with the new one
oldCfg := currentCfg
currentCfg = newCfg
// Stop, Cleanup
if oldCfg != nil {
for name, a := range oldCfg.apps {
err := a.Stop()
@ -129,26 +120,9 @@ func Run(cfg *Config) error {
log.Printf("[ERROR] stop %s: %v", name, err)
}
}
}
// shut down listeners that are no longer being used
err = func() error {
listenersMu.Lock()
for key, info := range listeners {
if atomic.LoadInt32(&info.usage) == 0 {
err := info.ln.Close()
if err != nil {
log.Printf("[ERROR] closing listener %s: %v", info.ln.Addr(), err)
continue
}
delete(listeners, key)
}
}
listenersMu.Unlock()
return nil
}()
if err != nil {
return err
// clean up old modules
oldCfg.cancelFunc()
}
return nil
@ -156,7 +130,7 @@ func Run(cfg *Config) error {
// App is a thing that Caddy runs.
type App interface {
Start(Handle) error
Start() error
Stop() error
}
@ -172,46 +146,7 @@ type Config struct {
// keyed by module name.
apps map[string]App
// moduleStates stores the optional "global" state
// values of every module used by this configuration,
// keyed by module name.
moduleStates map[string]interface{}
}
// Handle allows app modules to access
// the top-level Config in a controlled
// manner without needing to rely on
// global state.
type Handle struct {
current *Config
}
// App returns the configured app named name. If no app with
// that name is currently configured, a new empty one will be
// instantiated. (The app module must still be registered.)
func (h Handle) App(name string) (interface{}, error) {
if app, ok := h.current.apps[name]; ok {
return app, nil
}
modVal, err := LoadModule(name, nil)
if err != nil {
return nil, fmt.Errorf("instantiating new module %s: %v", name, err)
}
h.current.apps[name] = modVal.(App)
return modVal, nil
}
// GetStorage returns the configured Caddy storage implementation.
// If no storage implementation is explicitly configured, the
// default one is returned instead, as long as there is a current
// configuration loaded.
func GetStorage() certmagic.Storage {
currentCfgMu.RLock()
defer currentCfgMu.RUnlock()
if currentCfg == nil {
return nil
}
return currentCfg.storage
cancelFunc context.CancelFunc
}
// Duration is a JSON-string-unmarshable duration type.
@ -236,17 +171,3 @@ var (
currentCfg *Config
currentCfgMu sync.RWMutex
)
// moduleInstances stores the individual instantiated
// values of modules, keyed by module name. The list
// of instances of each module get passed into the
// respective module's OnLoad callback, so they can
// set up any global state and/or make sure their
// configuration, when viewed as a whole, is valid.
// Since this list is shared, only one Start() routine
// must be allowed to happen at any given time.
var moduleInstances = make(map[string][]interface{})
// startMu ensures that only one Start() happens at a time.
// This is important since moduleInstances is shared state.
var startMu sync.Mutex

126
context.go Normal file
View File

@ -0,0 +1,126 @@
package caddy2
import (
"context"
"encoding/json"
"fmt"
"log"
"reflect"
"github.com/mholt/certmagic"
)
type Context struct {
context.Context
moduleInstances map[string][]interface{}
cfg *Config
}
func NewContext(ctx Context) (Context, context.CancelFunc) {
newCtx := Context{moduleInstances: make(map[string][]interface{}), cfg: ctx.cfg}
c, cancel := context.WithCancel(ctx.Context)
wrappedCancel := func() {
cancel()
for modName, modInstances := range newCtx.moduleInstances {
for _, inst := range modInstances {
if cu, ok := inst.(CleanerUpper); ok {
err := cu.Cleanup()
if err != nil {
log.Printf("[ERROR] %s (%p): cleanup: %v", modName, inst, err)
}
}
}
}
}
newCtx.Context = c
return newCtx, wrappedCancel
}
func (ctx Context) LoadModule(name string, rawMsg json.RawMessage) (interface{}, error) {
modulesMu.Lock()
mod, ok := modules[name]
modulesMu.Unlock()
if !ok {
return nil, fmt.Errorf("unknown module: %s", name)
}
if mod.New == nil {
return nil, fmt.Errorf("module '%s' has no constructor", mod.Name)
}
val, err := mod.New()
if err != nil {
return nil, fmt.Errorf("initializing module '%s': %v", mod.Name, err)
}
// value must be a pointer for unmarshaling into concrete type
if rv := reflect.ValueOf(val); rv.Kind() != reflect.Ptr {
val = reflect.New(rv.Type()).Elem().Addr().Interface()
}
// fill in its config only if there is a config to fill in
if len(rawMsg) > 0 {
err = json.Unmarshal(rawMsg, &val)
if err != nil {
return nil, fmt.Errorf("decoding module config: %s: %v", mod.Name, err)
}
}
if prov, ok := val.(Provisioner); ok {
err := prov.Provision(ctx)
if err != nil {
return nil, fmt.Errorf("provision %s: %v", mod.Name, err)
}
}
if validator, ok := val.(Validator); ok {
err := validator.Validate(ctx)
if err != nil {
if cleanerUpper, ok := val.(CleanerUpper); ok {
err2 := cleanerUpper.Cleanup()
if err2 != nil {
err = fmt.Errorf("%v; additionally, cleanup: %v", err, err2)
}
return nil, fmt.Errorf("%s: invalid configuration: %v", mod.Name, err)
}
}
}
ctx.moduleInstances[name] = append(ctx.moduleInstances[name], val)
return val, nil
}
func (ctx Context) LoadModuleInline(moduleNameKey, moduleScope string, raw json.RawMessage) (interface{}, error) {
moduleName, err := getModuleNameInline(moduleNameKey, raw)
if err != nil {
return nil, err
}
val, err := ctx.LoadModule(moduleScope+"."+moduleName, raw)
if err != nil {
return nil, fmt.Errorf("loading module '%s': %v", moduleName, err)
}
return val, nil
}
// App returns the configured app named name. If no app with
// that name is currently configured, a new empty one will be
// instantiated. (The app module must still be registered.)
func (ctx Context) App(name string) (interface{}, error) {
if app, ok := ctx.cfg.apps[name]; ok {
return app, nil
}
modVal, err := ctx.LoadModule(name, nil)
if err != nil {
return nil, fmt.Errorf("instantiating new module %s: %v", name, err)
}
ctx.cfg.apps[name] = modVal.(App)
return modVal, nil
}
// Storage returns the configured Caddy storage implementation.
func (ctx Context) Storage() certmagic.Storage {
return ctx.cfg.storage
}

33
listeners.go
View File

@ -9,6 +9,7 @@ import (
)
// Listen returns a listener suitable for use in a Caddy module.
// Always be sure to close listeners when you are done with them.
func Listen(network, addr string) (net.Listener, error) {
lnKey := network + "/" + addr
@ -16,9 +17,9 @@ func Listen(network, addr string) (net.Listener, error) {
defer listenersMu.Unlock()
// if listener already exists, increment usage counter, then return listener
if lnInfo, ok := listeners[lnKey]; ok {
atomic.AddInt32(&lnInfo.usage, 1)
return &fakeCloseListener{usage: &lnInfo.usage, Listener: lnInfo.ln}, nil
if lnUsage, ok := listeners[lnKey]; ok {
atomic.AddInt32(&lnUsage.usage, 1)
return &fakeCloseListener{usage: &lnUsage.usage, key: lnKey, Listener: lnUsage.ln}, nil
}
// or, create new one and save it
@ -28,10 +29,10 @@ func Listen(network, addr string) (net.Listener, error) {
}
// make sure to start its usage counter at 1
lnInfo := &listenerUsage{usage: 1, ln: ln}
listeners[lnKey] = lnInfo
lnUsage := &listenerUsage{usage: 1, ln: ln}
listeners[lnKey] = lnUsage
return &fakeCloseListener{usage: &lnInfo.usage, Listener: ln}, nil
return &fakeCloseListener{usage: &lnUsage.usage, key: lnKey, Listener: ln}, nil
}
// fakeCloseListener's Close() method is a no-op. This allows
@ -42,6 +43,7 @@ func Listen(network, addr string) (net.Listener, error) {
type fakeCloseListener struct {
closed int32 // accessed atomically
usage *int32 // accessed atomically
key string
net.Listener
}
@ -80,8 +82,9 @@ func (fcl *fakeCloseListener) Accept() (net.Conn, error) {
return nil, err
}
// Close stops accepting new connections, but does not
// actually close the underlying listener.
// Close stops accepting new connections without
// closing the underlying listener, unless no one
// else is using it.
func (fcl *fakeCloseListener) Close() error {
if atomic.CompareAndSwapInt32(&fcl.closed, 0, 1) {
// unfortunately, there is no way to cancel any
@ -99,8 +102,18 @@ func (fcl *fakeCloseListener) Close() error {
}
// since we're no longer using this listener,
// decrement the usage counter
atomic.AddInt32(fcl.usage, -1)
// decrement the usage counter and, if no one
// else is using it, close underlying listener
if atomic.AddInt32(fcl.usage, -1) == 0 {
listenersMu.Lock()
delete(listeners, fcl.key)
listenersMu.Unlock()
err := fcl.Listener.Close()
if err != nil {
return err
}
}
}
return nil

95
modules.go
View File

@ -3,7 +3,6 @@ package caddy2
import (
"encoding/json"
"fmt"
"reflect"
"sort"
"strings"
"sync"
@ -32,9 +31,6 @@ func RegisterModule(mod Module) error {
if mod.Name == "caddy" {
return fmt.Errorf("modules cannot be named 'caddy'")
}
if strings.HasPrefix(mod.Name, "caddy.") {
return fmt.Errorf("modules cannot be namespaced in 'caddy'")
}
modulesMu.Lock()
defer modulesMu.Unlock()
@ -123,88 +119,6 @@ func Modules() []string {
return names
}
// LoadModule decodes rawMsg into a new instance of mod and
// returns the value. If mod.New() does not return a pointer
// value, it is converted to one so that it is unmarshaled
// into the underlying concrete type. If mod.New is nil, an
// error is returned. If the module implements Validator or
// Provisioner interfaces, those methods are invoked to
// ensure the module is fully configured and valid before
// being used.
func LoadModule(name string, rawMsg json.RawMessage) (interface{}, error) {
modulesMu.Lock()
mod, ok := modules[name]
modulesMu.Unlock()
if !ok {
return nil, fmt.Errorf("unknown module: %s", name)
}
if mod.New == nil {
return nil, fmt.Errorf("module '%s' has no constructor", mod.Name)
}
val, err := mod.New()
if err != nil {
return nil, fmt.Errorf("initializing module '%s': %v", mod.Name, err)
}
// value must be a pointer for unmarshaling into concrete type
if rv := reflect.ValueOf(val); rv.Kind() != reflect.Ptr {
val = reflect.New(rv.Type()).Elem().Addr().Interface()
}
// fill in its config only if there is a config to fill in
if len(rawMsg) > 0 {
err = json.Unmarshal(rawMsg, &val)
if err != nil {
return nil, fmt.Errorf("decoding module config: %s: %v", mod.Name, err)
}
}
if prov, ok := val.(Provisioner); ok {
err := prov.Provision()
if err != nil {
return nil, fmt.Errorf("provision %s: %v", mod.Name, err)
}
}
if validator, ok := val.(Validator); ok {
err := validator.Validate()
if err != nil {
return nil, fmt.Errorf("%s: invalid configuration: %v", mod.Name, err)
}
}
moduleInstances[mod.Name] = append(moduleInstances[mod.Name], val)
return val, nil
}
// LoadModuleInline loads a module from a JSON raw message which decodes
// to a map[string]interface{}, where one of the keys is moduleNameKey
// and the corresponding value is the module name as a string, which
// can be found in the given scope.
//
// This allows modules to be decoded into their concrete types and
// used when their names cannot be the unique key in a map, such as
// when there are multiple instances in the map or it appears in an
// array (where there are no custom keys). In other words, the key
// containing the module name is treated special/separate from all
// the other keys.
func LoadModuleInline(moduleNameKey, moduleScope string, raw json.RawMessage) (interface{}, error) {
moduleName, err := getModuleNameInline(moduleNameKey, raw)
if err != nil {
return nil, err
}
val, err := LoadModule(moduleScope+"."+moduleName, raw)
if err != nil {
return nil, fmt.Errorf("loading module '%s': %v", moduleName, err)
}
return val, nil
}
// getModuleNameInline loads the string value from raw of moduleNameKey,
// where raw must be a JSON encoding of a map.
func getModuleNameInline(moduleNameKey string, raw json.RawMessage) (string, error) {
@ -228,14 +142,19 @@ func getModuleNameInline(moduleNameKey string, raw json.RawMessage) (string, err
// always be fast (imperceptible running time) and an error should
// be returned only if the value's configuration is invalid.
type Validator interface {
Validate() error
Validate(Context) error
}
// Provisioner is implemented by modules which may need to perform
// some additional "setup" steps immediately after being loaded.
// This method will be called after Validate() (if implemented).
type Provisioner interface {
Provision() error
Provision(Context) error
}
// TODO: different name...
type CleanerUpper interface {
Cleanup() error
}
var (

55
modules/caddyhttp/caddyhttp.go
View File

@ -37,16 +37,20 @@ type App struct {
Servers map[string]*Server `json:"servers"`
servers []*http.Server
ctx caddy2.Context
}
// Provision sets up the app.
func (hc *App) Provision() error {
for _, srv := range hc.Servers {
err := srv.Routes.Provision()
func (app *App) Provision(ctx caddy2.Context) error {
app.ctx = ctx
for _, srv := range app.Servers {
err := srv.Routes.Provision(ctx)
if err != nil {
return fmt.Errorf("setting up server routes: %v", err)
}
err = srv.Errors.Routes.Provision()
err = srv.Errors.Routes.Provision(ctx)
if err != nil {
return fmt.Errorf("setting up server error handling routes: %v", err)
}
@ -56,10 +60,10 @@ func (hc *App) Provision() error {
}
// Validate ensures the app's configuration is valid.
func (hc *App) Validate() error {
func (app *App) Validate() error {
// each server must use distinct listener addresses
lnAddrs := make(map[string]string)
for srvName, srv := range hc.Servers {
for srvName, srv := range app.Servers {
for _, addr := range srv.Listen {
netw, expanded, err := parseListenAddr(addr)
if err != nil {
@ -78,13 +82,13 @@ func (hc *App) Validate() error {
}
// Start runs the app. It sets up automatic HTTPS if enabled.
func (hc *App) Start(handle caddy2.Handle) error {
err := hc.automaticHTTPS(handle)
func (app *App) Start() error {
err := app.automaticHTTPS()
if err != nil {
return fmt.Errorf("enabling automatic HTTPS: %v", err)
}
for srvName, srv := range hc.Servers {
for srvName, srv := range app.Servers {
s := &http.Server{
ReadTimeout: time.Duration(srv.ReadTimeout),
ReadHeaderTimeout: time.Duration(srv.ReadHeaderTimeout),
@ -110,13 +114,13 @@ func (hc *App) Start(handle caddy2.Handle) error {
}
// enable TLS
httpPort := hc.HTTPPort
httpPort := app.HTTPPort
if httpPort == 0 {
httpPort = DefaultHTTPPort
}
_, port, _ := net.SplitHostPort(addr)
if len(srv.TLSConnPolicies) > 0 && port != strconv.Itoa(httpPort) {
tlsCfg, err := srv.TLSConnPolicies.TLSConfig(handle)
tlsCfg, err := srv.TLSConnPolicies.TLSConfig(app.ctx)
if err != nil {
return fmt.Errorf("%s/%s: making TLS configuration: %v", network, addr, err)
}
@ -124,7 +128,7 @@ func (hc *App) Start(handle caddy2.Handle) error {
}
go s.Serve(ln)
hc.servers = append(hc.servers, s)
app.servers = append(app.servers, s)
}
}
}
@ -133,14 +137,14 @@ func (hc *App) Start(handle caddy2.Handle) error {
}
// Stop gracefully shuts down the HTTP server.
func (hc *App) Stop() error {
func (app *App) Stop() error {
ctx := context.Background()
if hc.GracePeriod > 0 {
if app.GracePeriod > 0 {
var cancel context.CancelFunc
ctx, cancel = context.WithTimeout(ctx, time.Duration(hc.GracePeriod))
ctx, cancel = context.WithTimeout(ctx, time.Duration(app.GracePeriod))
defer cancel()
}
for _, s := range hc.servers {
for _, s := range app.servers {
err := s.Shutdown(ctx)
if err != nil {
return err
@ -149,8 +153,8 @@ func (hc *App) Stop() error {
return nil
}
func (hc *App) automaticHTTPS(handle caddy2.Handle) error {
tlsAppIface, err := handle.App("tls")
func (app *App) automaticHTTPS() error {
tlsAppIface, err := app.ctx.App("tls")
if err != nil {
return fmt.Errorf("getting tls app: %v", err)
}
@ -159,7 +163,7 @@ func (hc *App) automaticHTTPS(handle caddy2.Handle) error {
lnAddrMap := make(map[string]struct{})
var redirRoutes RouteList
for srvName, srv := range hc.Servers {
for srvName, srv := range app.Servers {
srv.tlsApp = tlsApp
if srv.DisableAutoHTTPS {
@ -209,7 +213,7 @@ func (hc *App) automaticHTTPS(handle caddy2.Handle) error {
if err != nil {
return fmt.Errorf("%s: invalid listener address: %v", srvName, addr)
}
httpRedirLnAddr := joinListenAddr(netw, host, strconv.Itoa(hc.HTTPPort))
httpRedirLnAddr := joinListenAddr(netw, host, strconv.Itoa(app.HTTPPort))
lnAddrMap[httpRedirLnAddr] = struct{}{}
if parts := strings.SplitN(port, "-", 2); len(parts) == 2 {
@ -217,7 +221,7 @@ func (hc *App) automaticHTTPS(handle caddy2.Handle) error {
}
redirTo := "https://{request.host}"
httpsPort := hc.HTTPSPort
httpsPort := app.HTTPSPort
if httpsPort == 0 {
httpsPort = DefaultHTTPSPort
}
@ -253,13 +257,13 @@ func (hc *App) automaticHTTPS(handle caddy2.Handle) error {
continue
}
for _, a := range addrs {
if hc.listenerTaken(netw, a) {
if app.listenerTaken(netw, a) {
continue mapLoop
}
}
lnAddrs = append(lnAddrs, addr)
}
hc.Servers["auto_https_redirects"] = &Server{
app.Servers["auto_https_redirects"] = &Server{
Listen: lnAddrs,
Routes: redirRoutes,
DisableAutoHTTPS: true,
@ -269,8 +273,8 @@ func (hc *App) automaticHTTPS(handle caddy2.Handle) error {
return nil
}
func (hc *App) listenerTaken(network, address string) bool {
for _, srv := range hc.Servers {
func (app *App) listenerTaken(network, address string) bool {
for _, srv := range app.Servers {
for _, addr := range srv.Listen {
netw, addrs, err := parseListenAddr(addr)
if err != nil || netw != network {
@ -491,3 +495,4 @@ const (
// Interface guards
var _ HTTPInterfaces = middlewareResponseWriter{}
var _ caddy2.App = (*App)(nil)

33
modules/caddyhttp/reverseproxy/module.go
View File

@ -1,8 +1,6 @@
package reverseproxy
import (
"fmt"
"bitbucket.org/lightcodelabs/caddy2"
)
@ -11,36 +9,5 @@ func init() {
caddy2.RegisterModule(caddy2.Module{
Name: "http.responders.reverse_proxy",
New: func() (interface{}, error) { return new(LoadBalanced), nil },
OnLoad: func(instances []interface{}, _ interface{}) (interface{}, error) {
// we don't need to do anything with prior state because healthcheckers are
// cleaned up in OnUnload.
s := &State{
HealthCheckers: []*HealthChecker{},
}
for _, i := range instances {
lb := i.(*LoadBalanced)
err := NewLoadBalancedReverseProxy(lb, s)
if err != nil {
return nil, err
}
}
return s, nil
},
OnUnload: func(state interface{}) error {
s, ok := state.(*State)
if !ok {
return fmt.Errorf("proxy OnLoad: prior state not expected proxy.State type")
}
// cleanup old healthcheckers
for _, hc := range s.HealthCheckers {
hc.Stop()
}
return nil
},
})
}

4
modules/caddyhttp/reverseproxy/upstream.go
View File

@ -76,7 +76,7 @@ var (
)
// NewLoadBalancedReverseProxy returns a collection of Upstreams that are to be loadbalanced.
func NewLoadBalancedReverseProxy(lb *LoadBalanced, state *State) error {
func NewLoadBalancedReverseProxy(lb *LoadBalanced, state *State, ctx caddy2.Context) error {
// set defaults
if lb.NoHealthyUpstreamsMessage == "" {
lb.NoHealthyUpstreamsMessage = msgNoHealthyUpstreams
@ -115,7 +115,7 @@ func NewLoadBalancedReverseProxy(lb *LoadBalanced, state *State) error {
if uc.CircuitBreaker != nil {
if _, err := caddy2.GetModule(cbModule); err == nil {
val, err := caddy2.LoadModule(cbModule, uc.CircuitBreaker)
val, err := ctx.LoadModule(cbModule, uc.CircuitBreaker)
if err == nil {
cbv, ok := val.(CircuitBreaker)
if ok {

8
modules/caddyhttp/routes.go
View File

@ -29,11 +29,11 @@ type ServerRoute struct {
type RouteList []ServerRoute
// Provision sets up all the routes by loading the modules.
func (routes RouteList) Provision() error {
func (routes RouteList) Provision(ctx caddy2.Context) error {
for i, route := range routes {
// matchers
for modName, rawMsg := range route.Matchers {
val, err := caddy2.LoadModule("http.matchers."+modName, rawMsg)
val, err := ctx.LoadModule("http.matchers."+modName, rawMsg)
if err != nil {
return fmt.Errorf("loading matcher module '%s': %v", modName, err)
}
@ -43,7 +43,7 @@ func (routes RouteList) Provision() error {
// middleware
for j, rawMsg := range route.Apply {
mid, err := caddy2.LoadModuleInline("middleware", "http.middleware", rawMsg)
mid, err := ctx.LoadModuleInline("middleware", "http.middleware", rawMsg)
if err != nil {
return fmt.Errorf("loading middleware module in position %d: %v", j, err)
}
@ -53,7 +53,7 @@ func (routes RouteList) Provision() error {
// responder
if route.Respond != nil {
resp, err := caddy2.LoadModuleInline("responder", "http.responders", route.Respond)
resp, err := ctx.LoadModuleInline("responder", "http.responders", route.Respond)
if err != nil {
return fmt.Errorf("loading responder module: %v", err)
}

10
modules/caddytls/acmemanager.go
View File

@ -40,10 +40,10 @@ func (m *acmeManagerMaker) newManager(interactive bool) (certmagic.Manager, erro
return nil, nil
}
func (m *acmeManagerMaker) Provision() error {
func (m *acmeManagerMaker) Provision(ctx caddy2.Context) error {
// DNS providers
if m.Challenges.DNS != nil {
val, err := caddy2.LoadModuleInline("provider", "tls.dns", m.Challenges.DNS)
val, err := ctx.LoadModuleInline("provider", "tls.dns", m.Challenges.DNS)
if err != nil {
return fmt.Errorf("loading TLS storage module: %s", err)
}
@ -53,7 +53,7 @@ func (m *acmeManagerMaker) Provision() error {
// policy-specific storage implementation
if m.Storage != nil {
val, err := caddy2.LoadModuleInline("system", "caddy.storage", m.Storage)
val, err := ctx.LoadModuleInline("system", "caddy.storage", m.Storage)
if err != nil {
return fmt.Errorf("loading TLS storage module: %s", err)
}
@ -93,10 +93,10 @@ func (m *acmeManagerMaker) setDefaults() {
// makeCertMagicConfig converts m into a certmagic.Config, because
// this is a special case where the default manager is the certmagic
// Config and not a separate manager.
func (m *acmeManagerMaker) makeCertMagicConfig() certmagic.Config {
func (m *acmeManagerMaker) makeCertMagicConfig(ctx caddy2.Context) certmagic.Config {
storage := m.storage
if storage == nil {
storage = caddy2.GetStorage()
storage = ctx.Storage()
}
var ond *certmagic.OnDemandConfig

10
modules/caddytls/connpolicy.go
View File

@ -18,11 +18,11 @@ type ConnectionPolicies []*ConnectionPolicy
// TLSConfig converts the group of policies to a standard-lib-compatible
// TLS configuration which selects the first matching policy based on
// the ClientHello.
func (cp ConnectionPolicies) TLSConfig(handle caddy2.Handle) (*tls.Config, error) {
func (cp ConnectionPolicies) TLSConfig(ctx caddy2.Context) (*tls.Config, error) {
// connection policy matchers
for i, pol := range cp {
for modName, rawMsg := range pol.MatchersRaw {
val, err := caddy2.LoadModule("tls.handshake_match."+modName, rawMsg)
val, err := ctx.LoadModule("tls.handshake_match."+modName, rawMsg)
if err != nil {
return nil, fmt.Errorf("loading handshake matcher module '%s': %s", modName, err)
}
@ -33,7 +33,7 @@ func (cp ConnectionPolicies) TLSConfig(handle caddy2.Handle) (*tls.Config, error
// pre-build standard TLS configs so we don't have to at handshake-time
for i := range cp {
err := cp[i].buildStandardTLSConfig(handle)
err := cp[i].buildStandardTLSConfig(ctx)
if err != nil {
return nil, fmt.Errorf("connection policy %d: building standard TLS config: %s", i, err)
}
@ -74,8 +74,8 @@ type ConnectionPolicy struct {
stdTLSConfig *tls.Config
}
func (cp *ConnectionPolicy) buildStandardTLSConfig(handle caddy2.Handle) error {
tlsAppIface, err := handle.App("tls")
func (cp *ConnectionPolicy) buildStandardTLSConfig(ctx caddy2.Context) error {
tlsAppIface, err := ctx.App("tls")
if err != nil {
return fmt.Errorf("getting tls app: %v", err)
}

23
modules/caddytls/tls.go
View File

@ -26,10 +26,13 @@ type TLS struct {
certificateLoaders []CertificateLoader
certCache *certmagic.Cache
ctx caddy2.Context
}
// Provision sets up the configuration for the TLS app.
func (t *TLS) Provision() error {
func (t *TLS) Provision(ctx caddy2.Context) error {
t.ctx = ctx
// set up the certificate cache
// TODO: this makes a new cache every time; better to only make a new
// cache (or even better, add/remove only what is necessary) if the
@ -41,7 +44,7 @@ func (t *TLS) Provision() error {
})
for i, ap := range t.Automation.Policies {
val, err := caddy2.LoadModuleInline("module", "tls.management", ap.Management)
val, err := ctx.LoadModuleInline("module", "tls.management", ap.Management)
if err != nil {
return fmt.Errorf("loading TLS automation management module: %s", err)
}
@ -54,7 +57,7 @@ func (t *TLS) Provision() error {
if modName == automateKey {
continue // special case; these will be loaded in later
}
val, err := caddy2.LoadModule("tls.certificates."+modName, rawMsg)
val, err := ctx.LoadModule("tls.certificates."+modName, rawMsg)
if err != nil {
return fmt.Errorf("loading certificate module '%s': %s", modName, err)
}
@ -65,7 +68,7 @@ func (t *TLS) Provision() error {
}
// Start activates the TLS module.
func (t *TLS) Start(handle caddy2.Handle) error {
func (t *TLS) Start() error {
// load manual/static (unmanaged) certificates
for _, loader := range t.certificateLoaders {
certs, err := loader.LoadCertificates()
@ -73,7 +76,7 @@ func (t *TLS) Start(handle caddy2.Handle) error {
return fmt.Errorf("loading certificates: %v", err)
}
magic := certmagic.New(t.certCache, certmagic.Config{
Storage: caddy2.GetStorage(),
Storage: t.ctx.Storage(),
})
for _, cert := range certs {
err := magic.CacheUnmanagedTLSCertificate(cert)
@ -114,7 +117,7 @@ func (t *TLS) Stop() error {
func (t *TLS) Manage(names []string) error {
for _, name := range names {
ap := t.getAutomationPolicyForName(name)
magic := certmagic.New(t.certCache, ap.makeCertMagicConfig())
magic := certmagic.New(t.certCache, ap.makeCertMagicConfig(t.ctx))
err := magic.Manage([]string{name})
if err != nil {
return fmt.Errorf("automate: manage %s: %v", name, err)
@ -130,13 +133,13 @@ func (t *TLS) HandleHTTPChallenge(w http.ResponseWriter, r *http.Request) bool {
return false
}
ap := t.getAutomationPolicyForName(r.Host)
magic := certmagic.New(t.certCache, ap.makeCertMagicConfig())
magic := certmagic.New(t.certCache, ap.makeCertMagicConfig(t.ctx))
return magic.HandleHTTPChallenge(w, r)
}
func (t *TLS) getConfigForName(name string) (certmagic.Config, error) {
ap := t.getAutomationPolicyForName(name)
return ap.makeCertMagicConfig(), nil
return ap.makeCertMagicConfig(t.ctx), nil
}
func (t *TLS) getAutomationPolicyForName(name string) AutomationPolicy {
@ -178,12 +181,12 @@ type AutomationPolicy struct {
management ManagerMaker
}
func (ap AutomationPolicy) makeCertMagicConfig() certmagic.Config {
func (ap AutomationPolicy) makeCertMagicConfig(ctx caddy2.Context) certmagic.Config {
// default manager (ACME) is a special case because of how CertMagic is designed
// TODO: refactor certmagic so that ACME manager is not a special case by extracting
// its config fields out of the certmagic.Config struct, or something...
if acmeMgmt, ok := ap.management.(*acmeManagerMaker); ok {
return acmeMgmt.makeCertMagicConfig()
return acmeMgmt.makeCertMagicConfig(ctx)
}
return certmagic.Config{