download_dependencies {epitweetr}

Updates Java dependencies

Description

Download Java dependencies of the application mainly related to Apache SPARK and Lucene,

Usage

download_dependencies(tasks = get_tasks())

Arguments

tasks

Task object for reporting progress and error messages, default: get_tasks()

Details

Run a one-shot task consisting of downloading Java and Scala dependencies, this is separated by the following subtasks

• Download jar dependencies from configuration maven repo to project data folder. This includes, scala, spark, lucene. Packages to be downloaded are defined in package file 'sbt-deps.txt'

• Download winutils from configuration URL to project data folder. For more details on winutils please see https://issues.apache.org/jira/browse/HADOOP-13223 and https://issues.apache.org/jira/browse/HADOOP-16816

The URLs to download the JAR dependencies (maven package manager) and Winutils are on the configuration tab of the Shiny app.

Normally this function is not called directly by the user but from the detect_loop function.

Value

The list of tasks updated with produced messages

See Also

detect_loop

get_tasks

Examples

if(FALSE){
   library(epitweetr)
   # setting up the data folder
   message('Please choose the epitweetr data directory')
   setup_config(file.choose())

   # geolocating last tweets
   tasks <- download_dependencies()
}