mirror of
https://gitee.com/rainbond/Rainbond.git
synced 2024-12-01 03:07:51 +08:00
285 lines
8.7 KiB
Go
285 lines
8.7 KiB
Go
// Copyright (C) 2014-2018 Goodrain Co., Ltd.
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// RAINBOND, Application Management Platform
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version. For any non-GPL usage of Rainbond,
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// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
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// must be obtained first.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package middleware
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import (
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"bytes"
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"context"
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"encoding/json"
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"io/ioutil"
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"net/http"
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"strings"
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"github.com/Sirupsen/logrus"
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"github.com/go-chi/chi"
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"github.com/goodrain/rainbond/api/handler"
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"github.com/goodrain/rainbond/api/util"
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"github.com/goodrain/rainbond/db"
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dbmodel "github.com/goodrain/rainbond/db/model"
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"github.com/goodrain/rainbond/event"
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httputil "github.com/goodrain/rainbond/util/http"
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"github.com/jinzhu/gorm"
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)
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//ContextKey ctx key type
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type ContextKey string
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var pool []string
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func init() {
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pool = []string{
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"services_status",
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}
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}
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//InitTenant 实现中间件
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func InitTenant(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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if !apiExclude(r) {
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body, err := ioutil.ReadAll(r.Body)
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if err != nil {
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logrus.Warningf("error reading request body: %v", err)
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} else {
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logrus.Debugf("method: %s; uri: %s; body: %s", r.Method, r.RequestURI, string(body))
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}
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// set a new body, which will simulate the same data we read
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r.Body = ioutil.NopCloser(bytes.NewBuffer(body))
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}
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tenantName := chi.URLParam(r, "tenant_name")
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if tenantName == "" {
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httputil.ReturnError(r, w, 404, "cant find tenant")
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return
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}
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tenant, err := db.GetManager().TenantDao().GetTenantIDByName(tenantName)
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if err != nil {
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logrus.Errorf("get tenant by tenantName error: %s %v", tenantName, err)
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if err.Error() == gorm.ErrRecordNotFound.Error() {
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httputil.ReturnError(r, w, 404, "cant find tenant")
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return
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}
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httputil.ReturnError(r, w, 500, "get assign tenant uuid failed")
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return
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}
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ctx := context.WithValue(r.Context(), ContextKey("tenant_name"), tenantName)
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ctx = context.WithValue(ctx, ContextKey("tenant_id"), tenant.UUID)
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ctx = context.WithValue(ctx, ContextKey("tenant"), tenant)
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next.ServeHTTP(w, r.WithContext(ctx))
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}
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return http.HandlerFunc(fn)
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}
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//InitService 实现serviceinit中间件
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func InitService(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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serviceAlias := chi.URLParam(r, "service_alias")
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if serviceAlias == "" {
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httputil.ReturnError(r, w, 404, "cant find service alias")
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return
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}
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tenantID := r.Context().Value(ContextKey("tenant_id"))
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service, err := db.GetManager().TenantServiceDao().GetServiceByTenantIDAndServiceAlias(tenantID.(string), serviceAlias)
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if err != nil {
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if err.Error() == gorm.ErrRecordNotFound.Error() {
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httputil.ReturnError(r, w, 404, "cant find service")
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return
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}
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logrus.Errorf("get service by tenant & service alias error, %v", err)
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httputil.ReturnError(r, w, 500, "get service id error")
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return
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}
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serviceID := service.ServiceID
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ctx := context.WithValue(r.Context(), ContextKey("service_alias"), serviceAlias)
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ctx = context.WithValue(ctx, ContextKey("service_id"), serviceID)
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ctx = context.WithValue(ctx, ContextKey("service"), service)
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next.ServeHTTP(w, r.WithContext(ctx))
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}
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return http.HandlerFunc(fn)
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}
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//InitPlugin 实现plugin init中间件
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func InitPlugin(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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pluginID := chi.URLParam(r, "plugin_id")
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tenantID := r.Context().Value(ContextKey("tenant_id")).(string)
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if pluginID == "" {
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httputil.ReturnError(r, w, 404, "need plugin id")
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return
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}
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_, err := db.GetManager().TenantPluginDao().GetPluginByID(pluginID, tenantID)
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if err != nil {
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if err.Error() == gorm.ErrRecordNotFound.Error() {
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httputil.ReturnError(r, w, 404, "cant find plugin")
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return
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}
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logrus.Errorf("get plugin error, %v", err)
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httputil.ReturnError(r, w, 500, "get plugin error")
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return
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}
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ctx := context.WithValue(r.Context(), ContextKey("plugin_id"), pluginID)
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next.ServeHTTP(w, r.WithContext(ctx))
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}
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return http.HandlerFunc(fn)
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}
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//SetLog SetLog
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func SetLog(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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eventID := chi.URLParam(r, "event_id")
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if eventID != "" {
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logger := event.GetManager().GetLogger(eventID)
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ctx := context.WithValue(r.Context(), ContextKey("logger"), logger)
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next.ServeHTTP(w, r.WithContext(ctx))
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}
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}
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return http.HandlerFunc(fn)
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}
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//Proxy 反向代理中间件
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func Proxy(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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if strings.HasPrefix(r.RequestURI, "/v2/nodes") {
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handler.GetNodeProxy().Proxy(w, r)
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return
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}
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if strings.HasPrefix(r.RequestURI, "/v2/cluster") {
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handler.GetNodeProxy().Proxy(w, r)
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return
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}
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if strings.HasPrefix(r.RequestURI, "/v2/builder") {
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handler.GetBuilderProxy().Proxy(w, r)
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return
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}
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if strings.HasPrefix(r.RequestURI, "/v2/tasks") {
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handler.GetNodeProxy().Proxy(w, r)
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return
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}
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if strings.HasPrefix(r.RequestURI, "/v2/tasktemps") {
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handler.GetNodeProxy().Proxy(w, r)
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return
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}
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if strings.HasPrefix(r.RequestURI, "/v2/taskgroups") {
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handler.GetNodeProxy().Proxy(w, r)
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return
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}
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if strings.HasPrefix(r.RequestURI, "/v2/configs") {
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handler.GetNodeProxy().Proxy(w, r)
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return
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}
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if strings.HasPrefix(r.RequestURI, "/v2/rules") {
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handler.GetMonitorProxy().Proxy(w, r)
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return
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}
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next.ServeHTTP(w, r)
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}
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return http.HandlerFunc(fn)
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}
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func apiExclude(r *http.Request) bool {
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if r.Method == "GET" {
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return true
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}
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for _, item := range pool {
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if strings.Contains(r.RequestURI, item) {
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return true
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}
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}
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return false
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}
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type resWriter struct {
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origWriter http.ResponseWriter
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statusCode int
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}
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func (w *resWriter) Header() http.Header {
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return w.origWriter.Header()
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}
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func (w *resWriter) Write(p []byte) (int, error) {
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return w.origWriter.Write(p)
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}
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func (w *resWriter) WriteHeader(statusCode int) {
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w.statusCode = statusCode
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w.origWriter.WriteHeader(statusCode)
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}
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// WrapEL wrap eventlog, handle event log before and after process
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func WrapEL(f http.HandlerFunc, target, optType string, synType int) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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if r.Method != "GET" {
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body, err := ioutil.ReadAll(r.Body)
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if err != nil {
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logrus.Warningf("error reading request body: %v", err)
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} else {
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logrus.Debugf("method: %s; uri: %s; body: %s", r.Method, r.RequestURI, string(body))
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}
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// set a new body, which will simulate the same data we read
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r.Body = ioutil.NopCloser(bytes.NewBuffer(body))
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var targetID string
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var ok bool
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if targetID, ok = r.Context().Value(ContextKey("service_id")).(string); !ok {
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var reqDataMap map[string]interface{}
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if err = json.Unmarshal(body, &reqDataMap); err != nil {
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httputil.ReturnError(r, w, 400, "操作对象未指定")
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return
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}
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if targetID, ok = reqDataMap["service_id"].(string); !ok {
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httputil.ReturnError(r, w, 400, "操作对象未指定")
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return
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}
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}
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//eventLog check the latest event
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if !util.CanDoEvent(optType, synType, target, targetID) {
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httputil.ReturnError(r, w, 409, "操作过于频繁，请稍后再试") // status code 409 conflict
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return
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}
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// handle operator
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var operator string
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var reqData map[string]interface{}
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if err = json.Unmarshal(body, &reqData); err == nil {
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if operatorI, ok := reqData["operator"]; ok {
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operator = operatorI.(string)
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}
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}
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// tenantID can not null
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tenantID := r.Context().Value(ContextKey("tenant_id")).(string)
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var ctx context.Context
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event, err := util.CreateEvent(target, optType, targetID, tenantID, string(body), operator, synType)
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if err != nil {
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logrus.Error("create event error : ", err)
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httputil.ReturnError(r, w, 500, "操作失败")
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return
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}
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ctx = context.WithValue(r.Context(), ContextKey("event"), event)
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ctx = context.WithValue(ctx, ContextKey("event_id"), event.EventID)
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rw := &resWriter{origWriter: w}
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f(rw, r.WithContext(ctx))
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if synType == dbmodel.SYNEVENTTYPE || (synType == dbmodel.ASYNEVENTTYPE && rw.statusCode >= 400) { // status code 2XX/3XX all equal to success
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util.UpdateEvent(event.EventID, rw.statusCode)
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}
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}
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}
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}
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