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handlerDownload.go
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handlerDownload.go
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// Copyright (c) 2016 OpenM++
// This code is licensed under the MIT license (see LICENSE.txt for details)
package main
import (
"net/http"
"path/filepath"
"strconv"
"github.com/openmpp/go/ompp/db"
"github.com/openmpp/go/ompp/helper"
"github.com/openmpp/go/ompp/omppLog"
)
// modelDownloadPostHandler initate creation of model zip archive in home/io/download folder.
// POST /api/download/model/:model
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
func modelDownloadPostHandler(w http.ResponseWriter, r *http.Request) {
doModelDownloadPost(w, r, false, false)
}
// modelDownloadPostHandler initate creation of model zip archive in home/io/download folder.
// POST /api/download/model/:model/csv-bom
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
// Add utf-8 byte order mark into csv files
func modelDownloadCsvBomPostHandler(w http.ResponseWriter, r *http.Request) {
doModelDownloadPost(w, r, false, true)
}
// modelDownloadPostHandler initate creation of model zip archive in home/io/download folder.
// POST /api/download/model/:model/no-acc
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
// Accumulators CSV files are not included in result,
// It is significantly faster to porduce the result archive, we but cannot import it back into the model database,
// it is only to analyze model output values CSV data using some other tools
func modelDownloadNoAccPostHandler(w http.ResponseWriter, r *http.Request) {
doModelDownloadPost(w, r, true, false)
}
// modelDownloadPostHandler initate creation of model zip archive in home/io/download folder.
// POST /api/download/model/:model/no-acc/csv-bom
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
// Accumulators CSV files are not included in result,
// It is significantly faster to porduce the result archive, we but cannot import it back into the model database,
// it is only to analyze model output values CSV data using some other tools
// Add utf-8 byte order mark into csv files
func modelDownloadNoAccCsvBomPostHandler(w http.ResponseWriter, r *http.Request) {
doModelDownloadPost(w, r, true, true)
}
// doModelDownloadPost initate creation of model zip archive in home/io/download folder.
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
func doModelDownloadPost(w http.ResponseWriter, r *http.Request, isNoAcc bool, isCsvBom bool) {
// url or query parameters
dn := getRequestParam(r, "model") // model digest-or-name
// find model metadata by digest or name
mb, ok := theCatalog.modelBasicByDigestOrName(dn)
if !ok {
http.Error(w, "Model not found: "+dn, http.StatusBadRequest)
return // empty result: model digest not found
}
m, ok := theCatalog.ModelDicByDigest(mb.digest)
if !ok {
http.Error(w, "Model not found: "+dn, http.StatusBadRequest)
return // empty result: model digest not found
}
// base part of: output directory name, .zip file name and log file name
baseName := mb.name
omppLog.Log("Download of: ", baseName)
// if download.progress.log file exist the retun error: download in progress
logPath := filepath.Join(theCfg.downloadDir, baseName+".progress.download.log")
if isFileExist(logPath) == nil {
omppLog.Log("Error: download already in progress: ", logPath)
http.Error(w, "Model download already in progress: "+baseName, http.StatusBadRequest)
return
}
// create new download.progress.log file and write model decsription
logPath, isLog := createUpDownLog(logPath)
if !isLog {
omppLog.Log("Failed to create download log file: " + baseName + ".progress.download.log")
http.Error(w, "Model download failed: "+baseName, http.StatusBadRequest)
return
}
hdrMsg := []string{
"---------------",
"Model Name : " + m.Name,
"Model Version : " + m.Version + " " + m.CreateDateTime,
"Model Digest : " + m.Digest,
"Folder : " + baseName,
"---------------",
}
if !appendToUpDownLog(logPath, true, "Download of: "+baseName) {
renameToDownloadErrorLog(logPath, "")
omppLog.Log("Failed to write into download log file: " + baseName + ".progress.download.log")
http.Error(w, "Model download failed: "+baseName, http.StatusBadRequest)
return
}
if !appendToUpDownLog(logPath, false, hdrMsg...) {
renameToDownloadErrorLog(logPath, "")
omppLog.Log("Failed to write into download log file: " + baseName + ".progress.download.log")
http.Error(w, "Model download failed: "+baseName, http.StatusBadRequest)
return
}
// create model download files on separate thread
cmd, cmdMsg := makeModelDownloadCommand(mb, logPath, isNoAcc, isCsvBom)
go makeDownload(baseName, cmd, cmdMsg, logPath)
// report to the client results location
w.Header().Set("Content-Location", "/api/download/model/"+dn+"/"+baseName)
}
// runDownloadPostHandler initate creation of model run zip archive in home/io/download folder.
// POST /api/download/model/:model/run/:run
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
func runDownloadPostHandler(w http.ResponseWriter, r *http.Request) {
doRunDownloadPost(w, r, false, false)
}
// runDownloadPostHandler initate creation of model run zip archive in home/io/download folder.
// POST /api/download/model/:model/run/:run/csv-bom
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
// Add utf-8 byte order mark into csv files
func runDownloadCsvBomPostHandler(w http.ResponseWriter, r *http.Request) {
doRunDownloadPost(w, r, false, true)
}
// runDownloadPostHandler initate creation of model run zip archive in home/io/download folder.
// POST /api/download/model/:model/run/:run/no-acc
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
// Accumulators CSV files are not included in result,
// It is significantly faster to porduce the result archive, we but cannot import it back into the model database,
// it is only to analyze model output values CSV data using some other tools
func runDownloadNoAccPostHandler(w http.ResponseWriter, r *http.Request) {
doRunDownloadPost(w, r, true, false)
}
// runDownloadPostHandler initate creation of model run zip archive in home/io/download folder.
// POST /api/download/model/:model/run/:run/no-acc/csv-bom
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
// Accumulators CSV files are not included in result,
// It is significantly faster to porduce the result archive, we but cannot import it back into the model database,
// it is only to analyze model output values CSV data using some other tools
// Add utf-8 byte order mark into csv files
func runDownloadNoAccCsvBomPostHandler(w http.ResponseWriter, r *http.Request) {
doRunDownloadPost(w, r, true, true)
}
// doRunDownloadPost initate creation of model run zip archive in home/io/download folder.
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
func doRunDownloadPost(w http.ResponseWriter, r *http.Request, isNoAcc bool, isCsvBom bool) {
// url or query parameters
dn := getRequestParam(r, "model") // model digest-or-name
rdsn := getRequestParam(r, "run") // run digest-or-stamp-or-name
// find model metadata by digest or name
mb, ok := theCatalog.modelBasicByDigestOrName(dn)
if !ok {
http.Error(w, "Model not found: "+dn, http.StatusBadRequest)
return // empty result: model digest not found
}
m, ok := theCatalog.ModelDicByDigest(mb.digest)
if !ok {
http.Error(w, "Model not found: "+dn, http.StatusBadRequest)
return // empty result: model digest not found
}
// find all model runs by run digest, run stamp or name, check run status: it must be success
rst, ok := theCatalog.RunRowList(mb.digest, rdsn)
if !ok || len(rst) <= 0 {
http.Error(w, "Model run not found: "+mb.name+" "+dn+" "+rdsn, http.StatusBadRequest)
return // empty result: model run not found
}
if len(rst) > 1 {
omppLog.Log("Warning: multiple model runs found, using first one of: ", mb.name+" "+dn+" "+rdsn)
}
r0 := rst[0] // first run, if there are multiple with the same stamp or name
if r0.Status != db.DoneRunStatus {
http.Error(w, "Model run is not completed successfully: "+mb.name+" "+dn+" "+rdsn, http.StatusBadRequest)
return // empty result: run status must be success
}
// base part of: output directory name, .zip file name and log file name
baseName := mb.name + ".run." + helper.CleanPath(r0.Name)
omppLog.Log("Download of: ", baseName)
// if download.progress.log file exist the retun error: download in progress
logPath := filepath.Join(theCfg.downloadDir, baseName+".progress.download.log")
if isFileExist(logPath) == nil {
omppLog.Log("Error: download already in progress: ", logPath)
http.Error(w, "Model run download already in progress: "+baseName, http.StatusBadRequest)
return
}
// create new download.progress.log file and write model run decsription
logPath, isLog := createUpDownLog(logPath)
if !isLog {
omppLog.Log("Failed to create download log file: " + baseName + ".progress.download.log")
http.Error(w, "Model run download failed: "+baseName, http.StatusBadRequest)
return
}
hdrMsg := []string{
"---------------",
"Model Name : " + m.Name,
"Model Version : " + m.Version + " " + m.CreateDateTime,
"Model Digest : " + m.Digest,
"Run Name : " + r0.Name,
"Run Version : " + strconv.Itoa(r0.RunId) + " " + r0.CreateDateTime,
"Run Digest : " + r0.RunDigest,
"Folder : " + baseName,
"---------------",
}
if !appendToUpDownLog(logPath, true, "Download of: "+baseName) {
renameToDownloadErrorLog(logPath, "")
omppLog.Log("Failed to write into download log file: " + baseName + ".progress.download.log")
http.Error(w, "Model run download failed: "+baseName, http.StatusBadRequest)
return
}
if !appendToUpDownLog(logPath, false, hdrMsg...) {
renameToDownloadErrorLog(logPath, "")
omppLog.Log("Failed to write into download log file: " + baseName + ".progress.download.log")
http.Error(w, "Model run download failed: "+baseName, http.StatusBadRequest)
return
}
// create model run download files on separate thread
cmd, cmdMsg := makeRunDownloadCommand(mb, r0.RunId, logPath, isNoAcc, isCsvBom)
go makeDownload(baseName, cmd, cmdMsg, logPath)
// report to the client results location
w.Header().Set("Content-Location", "/api/download/model/"+dn+"/run/"+rdsn+"/"+baseName)
}
// worksetDownloadPostHandler initate creation of model workset zip archive in home/io/download folder.
// POST /api/download/model/:model/workset/:set
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
func worksetDownloadPostHandler(w http.ResponseWriter, r *http.Request) {
doWorksetDownloadPost(w, r, false)
}
// worksetDownloadPostHandler initate creation of model workset zip archive in home/io/download folder.
// POST /api/download/model/:model/workset/:set/csv-bom
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
// Add utf-8 byte order mark into csv files
func worksetDownloadCsvBomPostHandler(w http.ResponseWriter, r *http.Request) {
doWorksetDownloadPost(w, r, true)
}
// doWorksetDownloadPost initate creation of model workset zip archive in home/io/download folder.
// Zip archive is the same as created by dbcopy command line utilty.
// Dimension(s) and enum-based parameters returned as enum codes, not enum id's.
func doWorksetDownloadPost(w http.ResponseWriter, r *http.Request, isCsvBom bool) {
// url or query parameters
dn := getRequestParam(r, "model") // model digest-or-name
wsn := getRequestParam(r, "set") // workset name
// find model metadata by digest or name
mb, ok := theCatalog.modelBasicByDigestOrName(dn)
if !ok {
http.Error(w, "Model not found: "+dn, http.StatusBadRequest)
return // empty result: model digest not found
}
m, ok := theCatalog.ModelDicByDigest(mb.digest)
if !ok {
http.Error(w, "Model not found: "+dn, http.StatusBadRequest)
return // empty result: model digest not found
}
// find workset by name and status: it must be read-only
wst, ok, notFound := theCatalog.WorksetStatus(dn, wsn)
if !ok || notFound {
http.Error(w, "Model scenario not found: "+mb.name+" "+dn+" "+wsn, http.StatusBadRequest)
return // empty result: workset not found
}
if !wst.IsReadonly {
http.Error(w, "Model scenario must be read-only: "+mb.name+" "+dn+" "+wst.Name, http.StatusBadRequest)
return // empty result: workset must be read-only
}
// base part of: output directory name, .zip file name and log file name
baseName := mb.name + ".set." + helper.CleanPath(wst.Name)
omppLog.Log("Download of: ", baseName)
// if download.progress.log file exist the retun error: download in progress
logPath := filepath.Join(theCfg.downloadDir, baseName+".progress.download.log")
if isFileExist(logPath) == nil {
omppLog.Log("Error: download already in progress: ", logPath)
http.Error(w, "Model scenario download already in progress: "+baseName, http.StatusBadRequest)
return
}
// create new download.progress.log file and write model scenario decsription
logPath, isLog := createUpDownLog(logPath)
if !isLog {
omppLog.Log("Failed to create download log file: " + baseName + ".progress.download.log")
http.Error(w, "Model scenario download failed: "+baseName, http.StatusBadRequest)
return
}
hdrMsg := []string{
"------------------",
"Model Name : " + m.Name,
"Model Version : " + m.Version + " " + m.CreateDateTime,
"Model Digest : " + m.Digest,
"Scenario Name : " + wst.Name,
"Scenario Version : " + wst.UpdateDateTime,
"Folder : " + baseName,
"------------------",
}
if !appendToUpDownLog(logPath, true, "Download of: "+baseName) {
renameToDownloadErrorLog(logPath, "")
omppLog.Log("Failed to write into download log file: " + baseName + ".progress.download.log")
http.Error(w, "Model scenario download failed: "+baseName, http.StatusBadRequest)
return
}
if !appendToUpDownLog(logPath, false, hdrMsg...) {
renameToDownloadErrorLog(logPath, "")
omppLog.Log("Failed to write into download log file: " + baseName + ".progress.download.log")
http.Error(w, "Model scenario download failed: "+baseName, http.StatusBadRequest)
return
}
// create model scenario download files on separate thread
cmd, cmdMsg := makeWorksetDownloadCommand(mb, wst.Name, logPath, isCsvBom)
go makeDownload(baseName, cmd, cmdMsg, logPath)
// report to the client results location
w.Header().Set("Content-Location", "/api/download/model/"+dn+"/workset/"+wsn+"/"+baseName)
}