99 lines
2.6 KiB
Go
99 lines
2.6 KiB
Go
// Copyright 2019 Sorint.lab
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package handlers
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import (
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"bytes"
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"net/http"
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"strings"
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"text/template"
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"agola.io/agola/webbundle"
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assetfs "github.com/elazarl/go-bindata-assetfs"
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)
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// TODO(sgotti) now the test web ui directly calls the run api url, but this is
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// temporary and all requests should pass from the gateway
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const configTplText = `
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const CONFIG = {
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API_URL: '{{.ApiURL}}',
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API_BASE_PATH: '{{.ApiBasePath}}',
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}
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window.CONFIG = CONFIG
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`
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func NewWebBundleHandlerFunc(gatewayURL string) func(w http.ResponseWriter, r *http.Request) {
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var buf bytes.Buffer
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configTpl, err := template.New("config").Parse(configTplText)
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if err != nil {
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panic(err)
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}
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configTplData := struct {
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ApiURL string
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ApiBasePath string
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}{
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gatewayURL,
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"/api/v1alpha",
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}
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if err := configTpl.Execute(&buf, configTplData); err != nil {
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panic(err)
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}
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config := buf.Bytes()
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return func(w http.ResponseWriter, r *http.Request) {
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// Setup serving of bundled webapp from the root path, registered after api
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// handlers or it'll match all the requested paths
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fileServerHandler := http.FileServer(&assetfs.AssetFS{
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Asset: webbundle.Asset,
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AssetDir: webbundle.AssetDir,
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AssetInfo: webbundle.AssetInfo,
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})
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// config.js is the external webapp config file not provided by the
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// asset and not needed when served from the api server
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if r.URL.Path == "/config.js" {
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w.Header().Add("Content-Type", "application/javascript")
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_, err := w.Write(config)
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if err != nil {
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http.Error(w, "", http.StatusInternalServerError)
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}
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return
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}
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// check if the required file is available in the webapp asset and serve it
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if _, err := webbundle.Asset(r.URL.Path[1:]); err == nil {
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fileServerHandler.ServeHTTP(w, r)
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return
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}
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// skip /api requests
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if strings.HasPrefix(r.URL.Path, "/api/") {
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http.Error(w, "", http.StatusNotFound)
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return
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}
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// Fallback to index.html for every other page. Required for the SPA since
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// on browser reload it'll ask the current app url but we have to
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// provide the index.html
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r.URL.Path = "/"
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fileServerHandler.ServeHTTP(w, r)
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}
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}
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