forked from OpenNeo/impress
Create rails public_data:pull
task, to load up the latest public data
Yay, it works! Easy peasy! Love this way of integrating shell and Ruby, it's cute!
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1 changed files with 32 additions and 5 deletions
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@ -1,3 +1,4 @@
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require "open-uri"
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require "open3"
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desc "Tools to save and import DTI's public modeling data"
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@ -11,8 +12,6 @@ namespace :public_data do
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"locally and save to #{Rails.configuration.public_data_root}, though!"
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end
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config = ApplicationRecord.connection_db_config.configuration_hash
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# Generate a filename from the current time, and the option name argument
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# provided to the command (e.g. `rails public_data:commit[scheduled]`).
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timestamp = Time.now.utc.iso8601.gsub(':', '_')
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@ -23,6 +22,7 @@ namespace :public_data do
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args = []
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# The connection details for our database!
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config = ApplicationRecord.connection_db_config.configuration_hash
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args << "--host=#{config[:host]}" if config[:host]
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args << "--user=#{config[:username]}" if config[:username]
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args << "--password=#{config[:password]}" if config[:password]
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@ -45,23 +45,50 @@ namespace :public_data do
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dest_path.dirname.mkpath
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# Run mysqldump, pipe it into gzip, and output to the destination file.
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sh.mysqldump(*args) | sh.gzip("-c") > dest_path.to_s
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sh.transact do
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sh.mysqldump(*args) | sh.gzip("-c") > dest_path.to_s
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end
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puts "Saved dump to #{dest_path}"
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# Link this latest dump as `latest.sql.gz`.
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latest_path = Rails.configuration.public_data_root / "latest.sql.gz"
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File.unlink(latest_path) if File.exist?(latest_path)
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File.symlink(dest_path, latest_path)
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puts "Linked dump to #{latest_path}"
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end
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desc "Pull and import the latest public data from production (dev only)"
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task :pull do
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task :pull => :environment do
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unless Rails.env.development?
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raise "Can only pull public data in development mode! This helps us " +
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"ensure we won't overwrite the production database accidentally."
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end
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raise NotImplementedError, "TODO!"
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args = []
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# The connection details for our database!
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config = ApplicationRecord.connection_db_config.configuration_hash
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args << "--host=#{config[:host]}" if config[:host]
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args << "--user=#{config[:username]}" if config[:username]
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args << "--password=#{config[:password]}" if config[:password]
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args << "--database=#{config.fetch(:database)}"
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# Set up a shell, and register the commands we need.
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Shell.def_system_command("mysql")
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Shell.def_system_command("gunzip")
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sh = Shell.new
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URI.open("https://impress.openneo.net/public-data/latest.sql.gz") do |file|
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# Pipe the latest public data SQL into `gunzip` to unpack it, then pipe
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# it into mysql to execute it.
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#
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# NOTE: We need `open(file)` to wrap it in a plain `File` object, so the
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# `Shell` will recognize it correctly! It doesn't accept `Tempfile`.
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sh.transact do
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(sh.gunzip("-c") < open(file)) | sh.mysql(*args)
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end
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end
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end
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end
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