如何在ShinyProxy中获取CSS和Javascript文件时修复“404(未找到)”错误

问题描述 投票:0回答:3

我正在尝试使用ShinyProxy创建一个闪亮的应用程序 - 这是我之前做过很多次的事情。但是,此应用程序未正确使用使其运行所需的任何CSS或JS文件。

当我用docker run -p 3838:3838 my_app手动运行应用程序时,一切正常。但是,当将ShinyProxy指向my_app图像时,生成的应用程序无法加载任何CSS或JS文件。

Dockerfile

FROM openanalytics/r-base

MAINTAINER Daniel Beachnau "[email protected]"

# Dependencies outside of R
RUN apt-get update && apt-get install -y \
    sudo \
    gdebi-core \
    pandoc \
    pandoc-citeproc \
    libcurl4-gnutls-dev \
    libcairo2-dev \
    libxt-dev \
    xtail \
    wget \
    libpq-dev \
    libmariadb-client-lgpl-dev \
    # Might be needed for the archivist R-Library
    dbus \
    systemd \
    # needed for odbc
    unixodbc-dev

RUN apt-get install apt-transport-https curl -y
RUN curl http://packages.microsoft.com/keys/microsoft.asc | apt-key add -
RUN curl https://packages.microsoft.com/config/ubuntu/16.04/prod.list > /etc/apt/sources.list.d/mssql-release.list
RUN apt-get update
RUN ACCEPT_EULA=Y apt-get install msodbcsql17 -y

# Download R-Packages
# tidyverse
RUN R -e "install.packages('tidyr')"
RUN R -e "install.packages('dplyr')"
RUN R -e "install.packages('readr')"
# Shiny Packages
RUN R -e "install.packages('shiny')"
RUN R -e "install.packages('shinycssloaders')"
RUN R -e "install.packages('shinydashboard')"
RUN R -e "install.packages('shinyWidgets')"
RUN R -e "install.packages('DT')"
RUN R -e "install.packages('shinyjs')"
RUN R -e "install.packages('flexdashboard')"
# Database Packages
RUN R -e "install.packages('odbc')"
RUN R -e "install.packages('RMySQL')"
# Other
RUN R -e "install.packages('devtools')"
RUN R -e "install.packages('lubridate')"
RUN R -e "install.packages('reshape2')"
RUN R -e "install.packages('grid')"
RUN R -e "install.packages('lemon')"
RUN R -e "install.packages('scales')"
RUN R -e "install.packages('ggthemes')"
RUN R -e "install.packages('ggplot2')"

RUN R -e "devtools::install_bitbucket(repo = 'my_repo/my_package',  auth_user = 'my_username', password = 'my_password')"

# copy the app to the image
COPY . /root

# run the script to update the app data
WORKDIR /root
RUN Rscript app_data_update.R

WORKDIR /root/app
COPY Rprofile.site /usr/lib/R/etc/
EXPOSE 3838
CMD ["R", "-e", "shiny::runApp('/root/app', host='0.0.0.0', port=3838)"]

application.yml

shiny:
  proxy:
    title: ShinyProxy Server
    logo-url: /images/logo-image.png
    landing-page: /
    heartbeat-rate: 10000
    heartbeat-timeout: 60000
    container-wait-time: 60000
    port: 8080
    authentication: ldap

    # Docker configuration
    docker:
      cert-path: /home/none
      url: http://localhost:2375
      port-range-start: 20000
    support:
      container-log-path: ./container-logs
      mail-to-address: [email protected],

  - name: my_apps_name
    display-name: Shiny App
    docker-image: dbeachnau/my_app
    groups: [Shiny Users Management]
    logo-url: /images/logo-image.png
    container-volumes: ["/path/to/app:/root/app"]


logging:
  file:
    shinyproxy.log

以下是应用程序在闪亮代理中的外观。

problem

以下是我的应用在手动运行时的外观。

desired

chrome检查工具中的控制台充满了错误,例如

GET https://myshinyserver.com/container_name/font-awesome-5.3.1/css/all.min.css net::ERR_ABORTED 404 (Not Found)

我确实在ShinyProxy上运行了其他正确显示的应用程序,但我无法解决这些应用程序配置方式与此应用程序配置方式之间的区别。如果诊断问题需要其他详细信息,请与我们联系。感谢所有反馈 - 谢谢。

r docker shiny shinyproxy
3个回答
0
投票

您可能会在Shiny v1.3.0中看到这一点,而不是早期版本。如果是这样,可能是因为您的NGINX代理指令配置错误。我已经写了详细信息here,但我也会在这里发布重要的细节。

proxy_set_header Connection "upgrade";

该指令使NGINX为每个HTTP请求添加一个Connection:upgrade标头,当它只被用于WebSockets时。

此行是NGINX公司自己推荐的,但是,这些建议用于代理专用WebSockets的流量,而Shiny流量是普通HTTP请求和WebSockets的组合。旧版本的shiny / httpuv并不介意这种情况,但新版本更严格。

正确的配置如下所示:

http {

  map $http_upgrade $connection_upgrade {
      default upgrade;
      ''      close;
    }

  server {
    listen 80;


    location / {
      proxy_pass http://localhost:3838;
      proxy_redirect / $scheme://$http_host/;
      proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection $connection_upgrade;
      proxy_read_timeout 20d;
      proxy_buffering off;
    }
  }
}

有关其他示例,请参阅RStudio Community post中链接的文章。


0
投票

您必须在Dockerfile的顶部安装所需的字体。您可以将它添加到列表“R之外的依赖关系”:

sudo apt-get install fonts-font-awesome

0
投票

我已经解决了我的问题,但是,这仍然不能算作一个充分的答案或解释,因为我无法解释为什么这个解决方案有所作为。我决定使用现在可以使用的不同基本映像重写Dockerfile。我的代码中没有其他任何东西改变了 - 只是Dockerfile。工作泊坞文件如下:

FROM rocker/shiny-verse
# based on debian 9

MAINTAINER Daniel Beachnau "[email protected]"

# Dependencies outside of R
RUN apt-get update && apt-get install -y \
    gnupg2 \
    apt-utils \
    sudo \
    gdebi-core \
    libxt-dev \
    xtail \
    wget

# Install ODBC driver from microsoft
RUN apt-get install apt-transport-https curl -y
RUN curl http://packages.microsoft.com/keys/microsoft.asc | apt-key add -
RUN curl https://packages.microsoft.com/config/debian/9/prod.list > /etc/apt/sources.list.d/mssql-release.list
RUN apt-get update
RUN ACCEPT_EULA=Y apt-get install msodbcsql17 -y

# Download R-Packages
# Shiny Packages
RUN R -e "install.packages('shinycssloaders')"
RUN R -e "install.packages('shinydashboard')"
RUN R -e "install.packages('shinyWidgets')"
RUN R -e "install.packages('DT')"
RUN R -e "install.packages('shinyjs')"
RUN R -e "install.packages('flexdashboard')"
# Database Packages
RUN R -e "install.packages('odbc')"
RUN R -e "install.packages('RMySQL')"
# Other
RUN R -e "install.packages('lubridate')"
RUN R -e "install.packages('reshape2')"
RUN R -e "install.packages('scales')"
RUN R -e "install.packages('ggthemes')"
RUN R -e "install.packages('ggplot2')"

RUN R -e "devtools::install_bitbucket(repo = 'my_repo',  auth_user = 'my_username', password = 'my_password')"

# copy the app to the image
COPY . /root

# run the script to update the app data
WORKDIR /root
RUN Rscript app_data_update.R

WORKDIR /root/app
COPY Rprofile.site /usr/lib/R/etc/
EXPOSE 3838
CMD ["R", "-e", "shiny::runApp('/root/app', host='0.0.0.0', port=3838)"]

如果有人了解为什么会出现这种行为,我很乐意听到这一点,因为我最不愿意这么说。

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