In MarkEdmondson1234/googleCloudRunner: R Scripts in the Google Cloud via Cloud Run, Cloud Build and Cloud Scheduler

knitr::opts_chunk$set(echo = TRUE)

An example of a parameterised Rmd on Google Cloud Run

Using library(googleCloudRunner) to deploy an Rmd file that is knit upon each request to a URL and parametrised based on the URL arguments.

The parameterised data

Its not much to look at, but its a baseline for you to make amazing things with.

The point is this is dynamically generated by the URL parameters

# parameters are blank on first load
if(is.null(params$cyl)){
  the_data <- mtcars
} else {
  the_data <- mtcars[mtcars$cyl == params$cyl, ]
}

knitr::kable(the_data)

Other links to parametised reports that will render this Rmd again

• 6 (the default)
• 4
• 8

Deployment

Docker

Installs plumber, rmarkdown with pandoc system dependency

FROM gcr.io/gcer-public/googlecloudrunner:master
RUN export DEBIAN_FRONTEND=noninteractive; apt-get -y update \
  && apt-get install -y git-core \
    libcurl4-openssl-dev \
    libssl-dev \
    make \
    pandoc \
    pandoc-citeproc \
    zlib1g-dev
RUN ["install2.r", "rmarkdown"]

COPY ["./", "./"]
ENTRYPOINT ["Rscript", "server.R"]

plumber files

#api.R

#' Plot out data from the mtcars
#' @param cyl If provided, passed into Rmd rendering parameters
#' @get /
#' @serializer html
function(cyl = NULL){

  # to avoid caching a timestamp is added
  outfile <- sprintf("diamonds-%s.html", gsub("[^0-9]","",Sys.time()))

  # render markdown to the file
  rmarkdown::render(
    "diamonds.Rmd",
    params = list(cyl = cyl),
    envir = new.env(),
    output_file = outfile
  )

  # read html of file back in and use as response for plumber
  readChar(outfile, file.info(outfile)$size)
}

#server.r
pr <- plumber::plumb("api.R")
pr$run(host='0.0.0.0', port=as.numeric(Sys.getenv('PORT')), swagger=TRUE)

Deployment script

library(googleCloudRunner)

# this example file only on GitHub version until next CRAN release
the_folder <- system.file("cloudrun_rmarkdown", package = "googleCloudRunner")

cr_deploy_plumber(the_folder)

Produces these logs:

ℹ 2021-11-26 11:16:53 > Using existing Dockerfile found in folder
ℹ 2021-11-26 11:16:53 > Uploading inst/cloudrun_rmarkdown/ folder for Cloud Run
ℹ 2021-11-26 11:16:53 > Dockerfile found in  inst/cloudrun_rmarkdown/

── #Deploy docker build for image:  gcr.io/xxxx/cloudrun_rmarkdown ─────

── #Upload  inst/cloudrun_rmarkdown/  to  gs://xxxx/cloudrun_rm
ℹ 2021-11-26 11:16:53 > Uploading cloudrun_rmarkdown.tar.gz to xxxxx/cloudrun_rmarkdown.tar.gz
ℹ 2021-11-26 11:16:53 > File size detected as  1.5 Kb
ℹ 2021-11-26 11:16:53 > Google Cloud Storage Source enabled: /workspace/deploy/
ℹ Cloud Build started - logs:
<https://console.cloud.google.com/cloud-build/builds/4e9fd8b3-8cf5-4d4a-b81d-cfbd999a0d61?project=1080525199262>
✓ Build finished with status: SUCCESS                                               
──────────────────────────────────────────────────────────────────────────────────────
ℹ Last 10 lines of build log.  Use cr_build_logs() to read more
INFO[0031] Found cached layer, extracting to filesystem 
INFO[0031] COPY ["./", "./"]                            
INFO[0031] Taking snapshot of files...                  
INFO[0031] ENTRYPOINT ["Rscript", "server.R"]           
INFO[0031] No files changed in this command, skipping snapshotting. 
INFO[0031] Pushing image to gcr.io/xxxx/cloudrun_rmarkdown:4e9fd8b3-8cf5-4d4a-b81d-cfbd999a0d61 
INFO[0033] Pushed image to 1 destinations               
PUSH
DONE
ℹ 2021-11-26 11:17:43 > gcr.io/xxxxx/cloudrun_rmarkdown:$BUILD_ID
ℹ 2021-11-26 11:17:43 > Built Docker image:  gcr.io/xxxx/cloudrun_rmarkdown:4e9fd8b3-8cf5-4d4a-b81d-cfbd999a0d61

── #> Launching CloudRun image:  gcr.io/xxxxx/cloudrun_rmarkdown:4e9fd8b3
ℹ Cloud Build started - logs:
<https://console.cloud.google.com/cloud-build/builds/cbd87993-921f-45f5-9692-4cf184954ae3?project=1080525199262>
✓ Build finished with status: SUCCESS                                               
──────────────────────────────────────────────────────────────────────────────────────
ℹ Last 10 lines of build log.  Use cr_build_logs() to read more
Step #1 - "auth cloudrun": bindings:
Step #1 - "auth cloudrun": - members:
Step #1 - "auth cloudrun":   - allUsers
Step #1 - "auth cloudrun":   role: roles/run.invoker
Step #1 - "auth cloudrun": etag: BwXRrmmGqcU=
Step #1 - "auth cloudrun": version: 1
Finished Step #1 - "auth cloudrun"
PUSH
DONE

── #> Running at:  https://cloudrun-rmarkdown-ewjogewawq-ew.a.run.app ────────────────
==CloudRunService==
name:  cloudrun-rmarkdown 
location:  europe-west1 
lastModifier:  [e-mail] 
containers:  gcr.io/xxxx/cloudrun_rmarkdown:4e9fd8b3-8cf5-4d4a-b81d-cfbd999a0d61 
creationTimestamp:  2021-11-26T09:43:06.142532Z 
observedGeneration:  6 
url:  https://cloudrun-rmarkdown-ewjogewawq-ew.a.run.app 

SessionInfo()

sessionInfo()

MarkEdmondson1234/googleCloudRunner documentation built on Feb. 5, 2023, 5:45 p.m.