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//
// rhimportd
//
// The Radio Helsinki Rivendell Import Daemon
//
//
// Copyright (C) 2015-2016 Christian Pointner <equinox@helsinki.at>
//
// This file is part of rhimportd.
//
// rhimportd is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// any later version.
//
// rhimportd is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with rhimportd. If not, see <http://www.gnu.org/licenses/>.
//
package main
import (
"encoding/json"
"fmt"
"helsinki.at/rhimport"
"net/http"
"os"
"time"
)
type watchDirRequestData struct {
UserName string `json:"LOGIN_NAME"`
ShowId uint `json:"SHOW_ID"`
ClearShowCarts bool `json:"CLEAR_SHOW_CARTS"`
MusicPoolGroup string `json:"MUSIC_POOL_GROUP"`
Cart uint `json:"CART_NUMBER"`
ClearCart bool `json:"CLEAR_CART"`
Cut uint `json:"CUT_NUMBER"`
Channels uint `json:"CHANNELS"`
NormalizationLevel int `json:"NORMALIZATION_LEVEL"`
AutotrimLevel int `json:"AUTOTRIM_LEVEL"`
UseMetaData bool `json:"USE_METADATA"`
SourceUri string `json:"SOURCE_URI"`
}
func newWatchDirRequestData(conf *rhimport.Config) *watchDirRequestData {
rd := new(watchDirRequestData)
rd.UserName = ""
rd.ShowId = 0
rd.ClearShowCarts = false
rd.MusicPoolGroup = ""
rd.Cart = 0
rd.ClearCart = false
rd.Cut = 0
rd.Channels = conf.ImportParamDefaults.Channels
rd.NormalizationLevel = conf.ImportParamDefaults.NormalizationLevel
rd.AutotrimLevel = conf.ImportParamDefaults.AutotrimLevel
rd.UseMetaData = conf.ImportParamDefaults.UseMetaData
rd.SourceUri = ""
return rd
}
type watchDirResponseData struct {
ResponseCode int `json:"REPONSE_CODE"`
ErrorString string `json:"ERROR_STRING"`
Cart uint `json:"CART_NUMBER"`
Cut uint `json:"CUT_NUMBER"`
}
func watchDirErrorResponse(code int, errStr string) {
encoder := json.NewEncoder(os.Stdout)
respdata := watchDirResponseData{code, errStr, 0, 0}
encoder.Encode(respdata)
}
func watchDirResponse(result *rhimport.Result) {
encoder := json.NewEncoder(os.Stdout)
respdata := watchDirResponseData{result.ResponseCode, result.ErrorString, result.Cart, result.Cut}
encoder.Encode(respdata)
}
func watchDirParseRequest(conf *rhimport.Config, rddb *rhimport.RdDbChan, filename string) (ctx *rhimport.Context, err error) {
decoder := json.NewDecoder(os.Stdin)
reqdata := newWatchDirRequestData(conf)
if jsonerr := decoder.Decode(reqdata); jsonerr != nil {
err = fmt.Errorf("Error parsing JSON response: %s", jsonerr)
return
}
ctx = rhimport.NewContext(conf, rddb)
ctx.UserName = reqdata.UserName
ctx.Trusted = true
ctx.ShowId = reqdata.ShowId
ctx.ClearShowCarts = reqdata.ClearShowCarts
ctx.GroupName = reqdata.MusicPoolGroup
ctx.Cart = reqdata.Cart
ctx.ClearCart = reqdata.ClearCart
ctx.Cut = reqdata.Cut
ctx.Channels = reqdata.Channels
ctx.NormalizationLevel = reqdata.NormalizationLevel
ctx.AutotrimLevel = reqdata.AutotrimLevel
ctx.UseMetaData = reqdata.UseMetaData
ctx.SourceUri = reqdata.SourceUri
return
}
func watchDirHandler(conf *rhimport.Config, rddb *rhimport.RdDbChan, filename string) {
rhdl.Printf("WatchDirHandler: request for '%s'", filename)
var ctx *rhimport.Context
var err error
if ctx, err = watchDirParseRequest(conf, rddb, filename); err != nil {
watchDirErrorResponse(http.StatusBadRequest, err.Error())
return
}
if err = ctx.SanityCheck(); err != nil {
watchDirErrorResponse(http.StatusBadRequest, err.Error())
return
}
var res *rhimport.Result
if res, err = rhimport.FetchFile(ctx); err != nil {
watchDirErrorResponse(http.StatusInternalServerError, err.Error())
return
}
if res.ResponseCode != http.StatusOK {
watchDirErrorResponse(res.ResponseCode, res.ErrorString)
return
}
if res, err = rhimport.ImportFile(ctx); err != nil {
watchDirErrorResponse(http.StatusInternalServerError, err.Error())
return
}
if res.ResponseCode == http.StatusOK {
rhl.Println("ImportFile succesfully imported", ctx.SourceFile)
} else {
rhl.Println("ImportFile import of", ctx.SourceFile, "was unsuccesful")
}
watchDirResponse(res)
return
}
func watchDirRun(dir *os.File, conf *rhimport.Config, rddb *rhimport.RdDbChan) {
rhl.Printf("watch-dir-ctrl: watching for files in %s", dir.Name())
for {
var err error
if _, err = dir.Seek(0, 0); err != nil {
rhl.Printf("watch-dir-ctrl: reading directory contents failed: %s", err)
return
}
var names []string
if names, err = dir.Readdirnames(0); err != nil {
rhl.Printf("watch-dir-ctrl: reading directory contents failed: %s", err)
return
}
rhdl.Printf("watch-dir-ctrl: got: %q", names)
time.Sleep(1 * time.Second)
}
}
func StartWatchDir(dirname string, conf *rhimport.Config, rddb *rhimport.RdDbChan) {
for {
time.Sleep(5 * time.Second)
dir, err := os.Open(dirname)
if err != nil {
rhl.Printf("watch-dir-ctrl: %s", err)
continue
}
if i, err := dir.Stat(); err != nil {
rhl.Printf("watch-dir-ctrl: %s", err)
continue
} else {
if !i.IsDir() {
rhl.Printf("watch-dir-ctrl: %s is not a directory", dirname)
continue
}
}
watchDirRun(dir, conf, rddb)
}
}
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