class Instana::Snapshot::FargateProcess

Describes the current process in terms of its existence inside of a Fargate container @since 1.197.0

Constants

ID

Public Class Methods

new(metadata_uri: ENV['ECS_CONTAINER_METADATA_URI']) click to toggle source
# File lib/instana/snapshot/fargate_process.rb, line 11
def initialize(metadata_uri: ENV['ECS_CONTAINER_METADATA_URI'])
  @metadata_uri = URI(metadata_uri)
  @client = Backend::RequestClient.new(@metadata_uri.host, @metadata_uri.port, use_ssl: @metadata_uri.scheme == "https")
  @start_time = Time.now
end

Public Instance Methods

data() click to toggle source
# File lib/instana/snapshot/fargate_process.rb, line 21
def data
  proc_table = Sys::ProcTable.ps(pid: Process.pid)
  process = Backend::ProcessInfo.new(proc_table)

  {
    pid: process.pid.to_i,
    env: ENV.to_h,
    exec: process.name,
    args: process.arguments,
    user: process.uid,
    group: process.gid,
    start: @start_time.to_i * 1000,
    containerType: 'docker',
    container: container_id,
    "com.instana.plugin.host.name": task_id
  }
end
entity_id() click to toggle source
# File lib/instana/snapshot/fargate_process.rb, line 17
def entity_id
  Process.pid.to_s
end
snapshot() click to toggle source
# File lib/instana/snapshot/fargate_process.rb, line 39
def snapshot
  {
    name: ID,
    entityId: entity_id,
    data: data
  }
end

Private Instance Methods

container_id() click to toggle source
# File lib/instana/snapshot/fargate_process.rb, line 58
def container_id
  @container_id ||= lookup['DockerId']
end
lookup(resource = nil) click to toggle source
# File lib/instana/snapshot/fargate_process.rb, line 49
def lookup(resource = nil)
  path = resource ? @metadata_uri.path + resource : @metadata_uri.path
  response = @client.send_request('GET', path)

  raise "Unable to get `#{path}`. Got `#{response.code}`." unless response.ok?

  response.json
end
task_id() click to toggle source
# File lib/instana/snapshot/fargate_process.rb, line 62
def task_id
  @task_id ||= lookup('/task')['TaskARN']
end