gitlab-org--gitlab-foss/app/helpers/storage_health_helper.rb
Bob Van Landuyt f1ae1e39ce Move the circuitbreaker check out in a separate process
Moving the check out of the general requests, makes sure we don't have
any slowdown in the regular requests.

To keep the process performing this checks small, the check is still
performed inside a unicorn. But that is called from a process running
on the same server.

Because the checks are now done outside normal request, we can have a
simpler failure strategy:

The check is now performed in the background every
`circuitbreaker_check_interval`. Failures are logged in redis. The
failures are reset when the check succeeds. Per check we will try
`circuitbreaker_access_retries` times within
`circuitbreaker_storage_timeout` seconds.

When the number of failures exceeds
`circuitbreaker_failure_count_threshold`, we will block access to the
storage.

After `failure_reset_time` of no checks, we will clear the stored
failures. This could happen when the process that performs the checks
is not running.
2017-12-08 09:11:39 +01:00

32 lines
1.4 KiB
Ruby

module StorageHealthHelper
def failing_storage_health_message(storage_health)
storage_name = content_tag(:strong, h(storage_health.storage_name))
host_names = h(storage_health.failing_on_hosts.to_sentence)
translation_params = { storage_name: storage_name,
host_names: host_names,
failed_attempts: storage_health.total_failures }
translation = n_('%{storage_name}: failed storage access attempt on host:',
'%{storage_name}: %{failed_attempts} failed storage access attempts:',
storage_health.total_failures) % translation_params
translation.html_safe
end
def message_for_circuit_breaker(circuit_breaker)
maximum_failures = circuit_breaker.failure_count_threshold
current_failures = circuit_breaker.failure_count
translation_params = { number_of_failures: current_failures,
maximum_failures: maximum_failures }
if circuit_breaker.circuit_broken?
s_("%{number_of_failures} of %{maximum_failures} failures. GitLab will not "\
"retry automatically. Reset storage information when the problem is "\
"resolved.") % translation_params
else
_("%{number_of_failures} of %{maximum_failures} failures. GitLab will "\
"allow access on the next attempt.") % translation_params
end
end
end