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|
# frozen_string_literal: true
require 'digest'
module QA
module Service
class PraefectManager
include Service::Shellout
attr_accessor :gitlab
attr_reader :primary_node, :secondary_node, :tertiary_node, :postgres
PrometheusQueryError = Class.new(StandardError)
def initialize
@gitlab = 'gitlab-gitaly-cluster'
@praefect = 'praefect'
@postgres = 'postgres'
@primary_node = 'gitaly1'
@secondary_node = 'gitaly2'
@tertiary_node = 'gitaly3'
@virtual_storage = 'default'
end
def gitaly_nodes
[primary_node, secondary_node, tertiary_node]
end
# Executes the praefect `dataloss` command.
#
# @return [Boolean] whether dataloss has occurred
def dataloss?
wait_until_shell_command_matches(dataloss_command, /Outdated repositories/)
end
def replicated?(project_id, project_name_prefix = 'gitaly_cluster')
Support::Retrier.retry_until(raise_on_failure: false) do
replicas = wait_until_shell_command(%(docker exec #{@gitlab} bash -c 'gitlab-rake "gitlab:praefect:replicas[#{project_id}]"')) do |line|
QA::Runtime::Logger.debug(line.chomp)
# The output of the rake task looks something like this:
#
# Project name | gitaly1 (primary) | gitaly2 | gitaly3
# ----------------------------------------------------------------------------------------------------------------------------------------------------------------
# gitaly_cluster-3aff1f2bd14e6c98 | 23c4422629234d62b62adacafd0a33a8364e8619 | 23c4422629234d62b62adacafd0a33a8364e8619 | 23c4422629234d62b62adacafd0a33a8364e8619
#
break line if line.start_with?(project_name_prefix)
break nil if line.include?('Something went wrong when getting replicas')
end
next false unless replicas
# We want to know if the checksums are identical
replicas&.split('|')&.map(&:strip)&.slice(1..3)&.uniq&.one?
end
end
def start_praefect
start_node(@praefect)
QA::Runtime::Logger.info("Waiting for health check on praefect")
Support::Waiter.wait_until(max_duration: 120, sleep_interval: 1, raise_on_failure: true) do
wait_until_shell_command("docker exec #{@praefect} gitlab-ctl status praefect") do |line|
break true if line.include?('run: praefect: ')
QA::Runtime::Logger.debug(line.chomp)
end
end
end
def stop_praefect
stop_node(@praefect)
end
def start_node(name)
state = node_state(name)
return if state == "running"
if state == "paused"
shell "docker unpause #{name}"
end
if state == "stopped"
shell "docker start #{name}"
end
wait_until_shell_command_matches(
"docker inspect -f {{.State.Running}} #{name}",
/true/,
sleep_interval: 1,
max_duration: 180,
retry_on_exception: true
)
end
def stop_node(name)
return if node_state(name) == 'paused'
shell "docker pause #{name}"
wait_until_node_is_removed_from_healthy_storages(name) if gitaly_nodes.include?(name)
end
def node_state(name)
state = "stopped"
wait_until_shell_command("docker inspect -f {{.State.Status}} #{name}", stream_progress: false) do |line|
QA::Runtime::Logger.debug(line)
break state = "running" if line.include?("running")
break state = "paused" if line.include?("paused")
end
end
def clear_replication_queue
QA::Runtime::Logger.info("Clearing the replication queue")
shell sql_to_docker_exec_cmd(
<<~SQL
delete from replication_queue_job_lock;
delete from replication_queue_lock;
delete from replication_queue;
SQL
)
end
def create_stalled_replication_queue
QA::Runtime::Logger.info("Setting jobs in replication queue to `in_progress` and acquiring locks")
shell sql_to_docker_exec_cmd(
<<~SQL
update replication_queue set state = 'in_progress';
insert into replication_queue_job_lock (job_id, lock_id, triggered_at)
select id, rq.lock_id, created_at from replication_queue rq
left join replication_queue_job_lock rqjl on rq.id = rqjl.job_id
where state = 'in_progress' and rqjl.job_id is null;
update replication_queue_lock set acquired = 't';
SQL
)
end
def query_read_distribution
cmd = "docker exec #{@gitlab} bash -c 'curl -s http://localhost:9090/api/v1/query?query=gitaly_praefect_read_distribution'"
output = shell(cmd, stream_progress: false) do |line|
QA::Runtime::Logger.debug(line)
break line
end
result = JSON.parse(output)
raise PrometheusQueryError, "Unable to query read distribution metrics" unless result['status'] == 'success'
raise PrometheusQueryError, "No read distribution metrics found" if result['data']['result'].empty?
result['data']['result'].map { |result| { node: result['metric']['storage'], value: result['value'][1].to_i } }
end
def replication_queue_incomplete_count
result = []
shell sql_to_docker_exec_cmd("select count(*) from replication_queue where state = 'ready' or state = 'in_progress';") do |line|
result << line
end
# The result looks like:
# count
# -----
# 1
result[2].to_i
end
def replication_queue_lock_count
result = []
shell sql_to_docker_exec_cmd("select count(*) from replication_queue_lock where acquired = 't';") do |line|
result << line
end
# The result looks like:
# count
# -----
# 1
result[2].to_i
end
def start_all_nodes
start_postgres
gitaly_nodes.each { |node| start_node(node) }
start_praefect
wait_for_health_check_all_nodes
end
def start_postgres
start_node(@postgres)
Support::Waiter.repeat_until(max_attempts: 60, sleep_interval: 1) do
shell(sql_to_docker_exec_cmd("SELECT 1 as healthy_database"), fail_on_exception: false) do |line|
break true if line.include?("healthy_database")
end
end
end
def verify_storage_move(source_storage, destination_storage, repo_type: :project)
return if Specs::Helpers::ContextSelector.dot_com?
repo_path = verify_storage_move_from_gitaly(source_storage[:name], repo_type: repo_type)
destination_storage[:type] == :praefect ? verify_storage_move_to_praefect(repo_path, destination_storage[:name]) : verify_storage_move_to_gitaly(repo_path, destination_storage[:name])
end
def wait_for_health_check_all_nodes
gitaly_nodes.each { |node| wait_for_gitaly_health_check(node) }
end
def wait_for_gitaly_health_check(node)
QA::Runtime::Logger.info("Waiting for health check on #{node}")
Support::Waiter.wait_until(max_duration: 120, sleep_interval: 1, raise_on_failure: true) do
wait_until_shell_command("docker exec #{node} gitlab-ctl status gitaly") do |line|
break true if line.include?('run: gitaly: ')
QA::Runtime::Logger.debug(line.chomp)
end
end
wait_until_node_is_marked_as_healthy_storage(node)
end
def wait_for_health_check_failure(node)
QA::Runtime::Logger.info("Waiting for health check failure on #{node}")
wait_until_node_is_removed_from_healthy_storages(node)
end
def wait_until_node_is_removed_from_healthy_storages(node)
Support::Waiter.wait_until(max_duration: 120, sleep_interval: 1, raise_on_failure: true) do
result = []
shell sql_to_docker_exec_cmd("SELECT count(*) FROM healthy_storages WHERE storage = '#{node}';") do |line|
result << line
end
result[2].to_i == 0
end
end
def wait_until_node_is_marked_as_healthy_storage(node)
Support::Waiter.wait_until(max_duration: 120, sleep_interval: 1, raise_on_failure: true) do
result = []
shell sql_to_docker_exec_cmd("SELECT count(*) FROM healthy_storages WHERE storage = '#{node}';") do |line|
result << line
end
result[2].to_i == 1
end
end
# Waits until there is an increase in the number of reads for
# any node compared to the number of reads provided. If a node
# has no pre-read data, consider it to have had zero reads.
def wait_for_read_count_change(pre_read_data)
diff_found = false
Support::Waiter.wait_until(sleep_interval: 1, max_duration: 60) do
query_read_distribution.each_with_index do |data, index|
diff_found = true if data[:value] > value_for_node(pre_read_data, data[:node])
end
diff_found
end
end
def value_for_node(data, node)
data.find(-> { { value: 0 } }) { |item| item[:node] == node }[:value]
end
def wait_for_replication(project_id)
Support::Waiter.wait_until(sleep_interval: 1) { replication_queue_incomplete_count == 0 && replicated?(project_id) }
end
def replication_pending?
result = []
shell sql_to_docker_exec_cmd(
<<~SQL
select job from replication_queue
where state = 'ready'
and job ->> 'change' = 'update'
and job ->> 'target_node_storage' = '#{@primary_node}';
SQL
) do |line|
result << line
end
# The result looks like:
#
# job
# -----------
# {"change": "update", "params": null, "relative_path": "@hashed/4b/22/4b227777d4dd1fc61c6f884f48641d02b4d121d3fd328cb08b5531fcacdabf8a.git", "virtual_storage": "default", "source_node_storage": "gitaly3", "target_node_storage": "gitaly1"}
# (1 row)
# <blank row>
#
# Therefore when replication is pending there is at least 1 row of data plus 4 rows of metadata/layout
result.size >= 5
end
def modify_repo_access_time(node, repo_path, update_time)
repo = "/var/opt/gitlab/git-data/repositories/#{repo_path}"
shell(%(
docker exec --user git #{node} bash -c 'find #{repo} -exec touch -d "#{update_time}" {} \\;'
))
end
private
def dataloss_command
"docker exec #{@praefect} bash -c '/opt/gitlab/embedded/bin/praefect -config /var/opt/gitlab/praefect/config.toml dataloss'"
end
def sql_to_docker_exec_cmd(sql)
Service::Shellout.sql_to_docker_exec_cmd(sql, 'postgres', 'SQL_PASSWORD', 'praefect_production', 'postgres.test', @postgres)
end
def verify_storage_move_from_gitaly(storage, repo_type: :project)
wait_until_shell_command("docker exec #{@gitlab} bash -c 'tail -n 50 /var/log/gitlab/gitaly/current'") do |line|
log = JSON.parse(line)
if (log['grpc.method'] == 'RenameRepository' || log['grpc.method'] == 'RemoveRepository') &&
log['grpc.request.repoStorage'] == storage &&
repo_type(log['grpc.request.repoPath']) == repo_type
break log['grpc.request.repoPath']
end
rescue JSON::ParserError
# Ignore lines that can't be parsed as JSON
end
end
def verify_storage_move_to_praefect(repo_path, virtual_storage)
wait_until_shell_command("docker exec #{@praefect} bash -c 'tail -n 50 /var/log/gitlab/praefect/current'") do |line|
log = JSON.parse(line)
log['grpc.method'] == 'ReplicateRepository' && log['virtual_storage'] == virtual_storage && log['relative_path'] == repo_path
rescue JSON::ParserError
# Ignore lines that can't be parsed as JSON
end
end
def verify_storage_move_to_gitaly(repo_path, storage)
wait_until_shell_command("docker exec #{@gitlab} bash -c 'tail -n 50 /var/log/gitlab/gitaly/current'") do |line|
log = JSON.parse(line)
log['grpc.method'] == 'ReplicateRepository' && log['grpc.request.repoStorage'] == storage && log['grpc.request.repoPath'] == repo_path
rescue JSON::ParserError
# Ignore lines that can't be parsed as JSON
end
end
def repo_type(repo_path)
return :snippet if repo_path.start_with?('@snippets')
return :design if repo_path.end_with?('.design.git')
if repo_path.end_with?('.wiki.git')
return repo_path.start_with?('@groups') ? :group_wiki : :wiki
end
:project
end
end
end
end
|