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// Copyright 2018 ThousandEyes Inc.
//
// 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.
package ipxe
import (
"io/ioutil"
"path/filepath"
"strings"
"github.com/thousandeyes/shoelaces/internal/environment"
"github.com/thousandeyes/shoelaces/internal/log"
)
// ScriptName keeps the name of a script
type ScriptName string
// EnvName holds the name of an environment
type EnvName string
// ScriptPath holds the path of a script
type ScriptPath string
// Script holds information regarding an IPXE script.
type Script struct {
Name ScriptName
Env EnvName
Path ScriptPath
}
// ScriptList receives the global environment and return a list of IPXE
// scripts.
func ScriptList(env *environment.Environment) []Script {
ipxeScripts := make([]Script, 0)
// Collect scripts from the main config dir.
ipxeScripts = appendScriptsFromDir(env.Logger, ipxeScripts, env.TemplateExtension,
filepath.Join(env.DataDir, "ipxe"), "", "/configs/")
// Collect scripts from the config environments if any
if len(env.Environments) > 0 {
for _, e := range env.Environments {
ep := filepath.Join(env.DataDir, env.EnvDir, e, "ipxe")
ipxeScripts = appendScriptsFromDir(env.Logger, ipxeScripts, env.TemplateExtension, ep,
EnvName(e), ScriptPath("/env/"+e+"/configs/"))
}
}
return ipxeScripts
}
func appendScriptsFromDir(logger log.Logger, scripts []Script, templateExtension string, dir string, e EnvName, p ScriptPath) []Script {
for _, s := range scriptDirList(logger, templateExtension, dir) {
scripts = append(scripts, Script{Name: s, Env: e, Path: p})
}
return scripts
}
// scriptDirList returns the names of all available ipxe script templates
func scriptDirList(logger log.Logger, templateExtension string, datadir string) []ScriptName {
files, err := ioutil.ReadDir(datadir)
if err != nil {
logger.Info("component=ipxescript action=dir-list dir=%s err=\"%v\"", datadir, err.Error())
return nil
}
ipxeSuffix := ".ipxe"
suffix := ipxeSuffix + templateExtension
var pxeFiles []ScriptName
for _, f := range files {
// Skip over directories and non-template files.
if f.IsDir() || !strings.HasSuffix(f.Name(), suffix) {
continue
}
pxeFiles = append(pxeFiles, ScriptName(strings.TrimSuffix(f.Name(), templateExtension)))
}
return pxeFiles
}
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