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# frozen_string_literal: true
# Manages url matching for metrics dashboards.
module Gitlab
module Metrics
module Dashboard
class Url
class << self
include Gitlab::Utils::StrongMemoize
QUERY_PATTERN = '(?<query>\?[a-zA-Z0-9%.()+_=-]+(&[a-zA-Z0-9%.()+_=-]+)*)?'
ANCHOR_PATTERN = '(?<anchor>\#[a-z0-9_-]+)?'
OPTIONAL_DASH_PATTERN = '(?:/-)?'
# Matches urls for a metrics dashboard. This could be
# either the /metrics endpoint or the /metrics_dashboard
# endpoint.
#
# EX - https://<host>/<namespace>/<project>/environments/<env_id>/metrics
def metrics_regex
strong_memoize(:metrics_regex) do
regex_for_project_metrics(
%r{
/environments
/(?<environment>\d+)
/(metrics_dashboard|metrics)
}x
)
end
end
# Matches dashboard urls for a Grafana embed.
#
# EX - https://<host>/<namespace>/<project>/grafana/metrics_dashboard
def grafana_regex
strong_memoize(:grafana_regex) do
regex_for_project_metrics(
%r{
/grafana
/metrics_dashboard
}x
)
end
end
# Parses query params out from full url string into hash.
#
# Ex) 'https://<root>/<project>/<environment>/metrics?title=Title&group=Group'
# --> { title: 'Title', group: 'Group' }
def parse_query(url)
query_string = URI.parse(url).query.to_s
CGI.parse(query_string)
.transform_values { |value| value.first }
.symbolize_keys
end
# Builds a metrics dashboard url based on the passed in arguments
def build_dashboard_url(*args)
Gitlab::Routing.url_helpers.metrics_dashboard_namespace_project_environment_url(*args)
end
# Matches dashboard urls for a metric chart embed
# for cluster metrics
#
# EX - https://<host>/<namespace>/<project>/-/clusters/<cluster_id>/?group=Cluster%20Health&title=Memory%20Usage&y_label=Memory%20(GiB)
def clusters_regex
strong_memoize(:clusters_regex) do
regex_for_project_metrics(
%r{
/clusters
/(?<cluster_id>\d+)
/?
}x
)
end
end
private
def regex_for_project_metrics(path_suffix_pattern)
%r{
(?<url>
#{gitlab_host_pattern}
#{project_path_pattern}
#{OPTIONAL_DASH_PATTERN}
#{path_suffix_pattern}
#{QUERY_PATTERN}
#{ANCHOR_PATTERN}
)
}x
end
def gitlab_host_pattern
Regexp.escape(Gitlab.config.gitlab.url)
end
def project_path_pattern
"\/#{Project.reference_pattern}"
end
end
end
end
end
end
Gitlab::Metrics::Dashboard::Url.extend_if_ee('::EE::Gitlab::Metrics::Dashboard::Url')
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