prometheus/web/ui/ui.go

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Replace go-bindata with vfsgen (#4430) Looking at https://tech.townsourced.com/post/embedding-static-files-in-go/ (which was mentioned in the issue), vfsgen has all the needed features. In particular: - Reproducible builds (no issue with timestamping). - Well maintained and relatively popular. - Integration with go generate. - Self-contained (no external dependency). * [WIP] Replace go-bindata by vfsgen Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Add license + remove doc.go Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Generate templates assets Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Use new templates assets Signed-off-by: Simon Pasquier <spasquie@redhat.com> * split static assets Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Idempotent make assets Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Update vendor/ Signed-off-by: Simon Pasquier <spasquie@redhat.com> * vendor vfsgendev Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Update README.md Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Simplify assets generation Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Fix README.md Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Use generate helper program instead of vfsgen This avoids installing vfsgendev in the target environment. Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Remove unused vfsgen package Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Fix Makefile Signed-off-by: Simon Pasquier <spasquie@redhat.com> * vendoring shurcooL/vfsgen Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Fix go generate command Signed-off-by: Simon Pasquier <spasquie@redhat.com> * Sync web/ui/assets_vfsdata.go Signed-off-by: Simon Pasquier <spasquie@redhat.com>
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// Copyright 2018 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build dev
package ui
import (
"go/build"
"log"
"net/http"
"os"
"strings"
"github.com/shurcooL/httpfs/filter"
"github.com/shurcooL/httpfs/union"
)
func importPathToDir(importPath string) string {
p, err := build.Import(importPath, "", build.FindOnly)
if err != nil {
log.Fatalln(err)
}
return p.Dir
}
var static http.FileSystem = filter.Keep(
http.Dir(importPathToDir("github.com/prometheus/prometheus/web/ui/static")),
func(path string, fi os.FileInfo) bool {
return fi.IsDir() ||
(!strings.HasSuffix(path, "map.js") &&
!strings.HasSuffix(path, "/bootstrap.js") &&
!strings.HasSuffix(path, "/bootstrap-theme.css") &&
!strings.HasSuffix(path, "/bootstrap.css"))
},
)
var templates http.FileSystem = filter.Keep(
http.Dir(importPathToDir("github.com/prometheus/prometheus/web/ui/templates")),
func(path string, fi os.FileInfo) bool {
return fi.IsDir() || strings.HasSuffix(path, ".html")
},
)
// Assets contains the project's assets.
var Assets http.FileSystem = union.New(map[string]http.FileSystem{
"/templates": templates,
"/static": static,
})