lib/health_check/s3_health_check.rb
module HealthCheck
class S3HealthCheck
extend BaseHealthCheck
class << self
def check
unless defined?(::Aws)
raise "Wrong configuration. Missing 'aws-sdk' or 'aws-sdk-s3' gem"
end
return create_error 's3', 'Could not connect to aws' if aws_s3_client.nil?
HealthCheck.buckets.each do |bucket_name, permissions|
if permissions.nil? # backward compatible
permissions = [:R, :W, :D]
end
permissions.each do |permision|
begin
send(permision, bucket_name)
rescue Exception => e
raise "bucket:#{bucket_name}, permission:#{permision} - #{e.message}"
end
end
end
''
rescue Exception => e
create_error 's3', e.message
end
private
# We already assume you are using Rails. Let's also assume you have an initializer
# created for your Aws config. We will set the region here so you can use an
# instance profile and simply set the region in your environment.
def configure_client
::Aws.config[:s3] = { force_path_style: true }
::Aws.config[:region] ||= ENV['AWS_REGION'] || ENV['DEFAULT_AWS_REGION']
::Aws::S3::Client.new
end
def aws_s3_client
@aws_s3_client ||= configure_client
end
def R(bucket)
aws_s3_client.list_objects(bucket: bucket)
end
def W(bucket)
app_name = if Rails::VERSION::MAJOR >= 6
::Rails.application.class.module_parent_name
else
::Rails.application.class.parent_name
end
aws_s3_client.put_object(bucket: bucket,
key: "healthcheck_#{app_name}",
body: Time.new.to_s)
end
def D(bucket)
app_name = if Rails::VERSION::MAJOR >= 6
::Rails.application.class.module_parent_name
else
::Rails.application.class.parent_name
end
aws_s3_client.delete_object(bucket: bucket,
key: "healthcheck_#{app_name}")
end
end
end
end