r - 使用命令行部署 Shiny 的应用程序时出错

Question

我目前正尝试在 Windows 机器上使用计划任务部署 Shiny 的应用程序。这个想法是每天早上运行一个脚本，从多个位置聚合数据，然后将其放入一些 R data.table 对象中，以供 shiny应用程序。

我正在使用 taskscheduleR安排任务。它最初将工作目录设置为 C:/Windows/system32，因此我将其修复为指向我的应用程序所在的目录 (C:/rprojects/myappname)。在我尝试部署文件之前，脚本运行良好。

library(rsconnect)
deployApp(appName = "myappname", upload = TRUE, appFileManifest = "manifest.txt",account = "myaccountname", server = "shinyapps.io")

当我从 taskscheduleR 检查日志时，我有以下几行

Preparing to deploy application...DONE
Uploading bundle for application: 999999...Error in contrib.url(getOption("repos"), type) : 
  trying to use CRAN without setting a mirror
Calls: deployApp ... withCallingHandlers -> <Anonymous> -> available.packages -> contrib.url
Execution halted

我已经搜索了错误消息，我能找到的所有内容都与使用 install.packages() 时设置 repo 有关，我没有在我的脚本中使用它。我希望它与 deployApp 尝试查找 URL 的方式有关，但是我可以理解我可能需要(或能够)声明存储库的位置。

更新 (2016-10-11): 我已经为 rsconnect 激活了几个选项以获取有关部署的更多详细信息。不幸的是，它无助于提供任何更大的清晰度。

options(rsconnect.http.trace = TRUE)
options(rsconnect.http.trace.json = TRUE)
options(rsconnect.http.verbose = TRUE)

下面是log

的输出

    GET /v1/applications/?filter=account_id:999999&filter=name:myappname&count=100&offset=0 1500ms
* Hostname was NOT found in DNS cache
*   Trying 54.225.182.222...
*   Trying 174.129.219.111...
* Connected to api.shinyapps.io (54.225.182.222) port 443 (#0)
  * successfully set certificate verify locations:
    *   CAfile: C:/RLibrary/rsconnect/cert/cacert.pem
  CApath: none
  * SSL connection using TLSv1.0 / ECDHE-RSA-AES128-SHA
  * Server certificate:
    *    subject: OU=Domain Control Validated; CN=*.shinyapps.io
  *      start date: 2016-07-18 14:17:38 GMT
  *      expire date: 2017-09-09 23:05:10 GMT
  *      subjectAltName: api.shinyapps.io matched
  *      issuer: C=US; ST=Arizona; L=Scottsdale; O=GoDaddy.com, Inc.; OU=http://certs.godaddy.com/repository/; CN=Go Daddy Secure Certificate Authority - G2
  *      SSL certificate verify ok.
  > GET /v1/applications/?filter=account_id:999999&filter=name:myappname&count=100&offset=0 HTTP/1.1
  User-Agent: rsconnect/0.4.3
  Host: api.shinyapps.io
  Accept: */*
    Date: Tue, 11 Oct 2016 01:26:02 GMT
  X-Auth-Token: xxxxxx
  X-Auth-Signature: xxxxxx; version=1
  X-Content-Checksum: xxxxxx

  < HTTP/1.1 200 OK
  < Content-Type: application/json; charset=UTF-8
  < Date: Tue, 11 Oct 2016 01:23:36 GMT
  < Etag: "xxxxxx"
  < Server: nginx/1.4.2
  < Content-Length: 3212
  < Connection: keep-alive
  < 
    * Connection #0 to host api.shinyapps.io left intact
  Error in contrib.url(getOption("repos"), type) : 
    trying to use CRAN without setting a mirror
  Calls: deployApp ... withCallingHandlers -> <Anonymous> -> available.packages -> contrib.url
  Execution halted

Answer 1

设置

options(repos = c(CRAN = "https://cran.rstudio.com/")) 

在你想用 taskscheduleR 启动的脚本顶部的某个地方 如果您使用 Rscript 启动 R，则不会设置 CRAN 存储库，这与您在 RStudio 编辑器中运行代码不同。