Class: Irm

Inherits:
Thor
  • Object
show all
Defined in:
lib/irm.rb

Instance Method Summary collapse

Instance Method Details

#create_cq ⇒ Object 



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# File 'lib/irm.rb', line 51

def create_cq
  hash = YAML.load_file("#{options[:database]}.yaml")
  hash["retention_policies"].each_index do |retention_policy_index|
    retention_policy = hash["retention_policies"][retention_policy_index]
    command = "CREATE RETENTION POLICY #{retention_policy["name"]} ON #{options[:database]} DURATION #{retention_policy["duration"]} REPLICATION 1"
    command << " DEFAULT" if retention_policy_index == 0
    puts command
  end
  hash["measurements"].each_pair do |measurement,measurement_hash|
    # migrate from DEFAULT retention policy first policy
    retention_policy = hash["retention_policies"][0]
    retention_name = retention_policy["name"]
    retention_time = retention_policy["duration"]
    prefix = "SELECT "
    fields = measurement_hash["fields"].collect do |field, function|
      "#{function}(#{field}) AS #{field}"
    end.join(", ")
    suffix = %Q| INTO #{options[:database]}."#{retention_name}".#{measurement} FROM #{options[:database]}."default".#{measurement} WHERE time > '2016-03-05' AND time < now() |
    tags = ""
    tags = %Q|GROUP BY time(15s), "#{measurement_hash["tags"].join(%Q[", "])}" fill(none)| unless measurement_hash["tags"].to_a.empty?

    puts "#{prefix}#{fields}#{suffix}#{tags}"
    # create CQ for moving data to all other policies
    hash["retention_policies"][1..-1].each_index do |retention_policy_index|
      retention_policy = hash["retention_policies"][retention_policy_index+1]
      retention_name = retention_policy["name"]
      retention_time = retention_policy["precision"]
      prefix = "CREATE CONTINUOUS QUERY #{measurement}_#{retention_name} ON #{options[:database]} BEGIN SELECT "
      fields = measurement_hash["fields"].collect do |field, function|
        "#{function}(#{field}) AS #{field}"
      end.join(", ")
      suffix = %Q| INTO #{options[:database]}."#{retention_name}".#{measurement} FROM #{options[:database]}."#{hash["retention_policies"][retention_policy_index]["name"]}".#{measurement} GROUP BY time(#{retention_time}) |
      tags = ""
      tags = %Q|, "#{measurement_hash["tags"].join(%Q[", "])}"|   unless measurement_hash["tags"].to_a.empty?
      puts "#{prefix}#{fields}#{suffix}#{tags} END"
    end
    puts "#################################### Done with: #{measurement}"
  end
end

#recon ⇒ Object 



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# File 'lib/irm.rb', line 15

def recon
  auth = ""
  if options[:user] and options[:password]
    auth = "-u #{options[:user]}:#{options[:password]}"
  end
  json = `curl #{auth } -G 'http://#{options[:host]}:8086/query?pretty=true' --data-urlencode "db=#{options[:database] }" --data-urlencode "q=show tag keys"`
  hash = JSON.parse(json)
  ap hash
  yaml = {}
  yaml["measurements"] = {}
  hash["results"][0]["series"].collect do |series|
    yaml["measurements"][series["name"]] = {
      "tags" => series["values"].collect { |tag| tag[0]}
    }
  end
  json = `curl #{auth} -G 'http://#{options[:host]}:8086/query?pretty=true' --data-urlencode "db=#{options[:database]}" --data-urlencode "q=show field keys"`
  hash = JSON.parse(json)
  ap hash
  hash["results"][0]["series"].collect do |series|
    yaml["measurements"][series["name"]]["fields"] ||= {}
    series["values"].each { |tag| yaml["measurements"][series["name"]]["fields"][tag[0]] = "mean"}
  end
  yaml["database"] = options[:database]
  yaml["retention_policies"] = [
    {"name" => "biweekly", "duration" => "15d"},
    {"name" => "months3", "duration" => "92d", "precision" => "1m"},
    {"name" => "yearly", "duration" => "366d", "precision" => "5m"}
  ]

  File.open("#{options[:database]}.yaml","w") do |io|
    io << YAML.dump(yaml)
    puts "Recon written to: #{options[:database]}.yaml"
  end
end